Weed Control Reports

View the entire 2025 WSU Weed Control Report (PDF)

Weed Seed Germination and Emergence

• Predicting weed emergence timings in eastern Washington using hydrothermal time model (PDF)

Cropping Systems

• Field horsetail control two years after initial applications in the Palouse region (PDF)
• Long term control of smooth scouringrush with Finesse® Cereal and Fallow Herbicide in winter wheat/spring wheat/no-till fallow cropping system (PDF)

Winter Wheat

• Downy brome control in winter wheat with Zidua® SC and Beyond® Xtra (PDF)

Pulse Crops (chickpeas, lentils, peas)

• Broadleaf weed control with pyridate in lentils (PDF)
• Fall-applied Eptam® 7E herbicide for Italian ryegrass control in spring pulse crops (PDF)

Spring Canola

• Italian ryegrass control with Liberty® Ultra and Sonalan® HFP in spring canola (PDF)
• Glyphosate application timing and rate affects spring canola yield (PDF)
• Triazine tolerant spring canola may add an additional option for Italian ryegrass control (PDF)

Kentucky Bluegrass

• Alion® crop safety and efficacy in Kentucky bluegrass (PDF)
• Anthem® Flex crop safety and efficacy in Kentucky bluegrass (PDF)

Chemical Fallow

• Residual efficacy of HPPD-inhibiting herbicides (PDF)
• Residual efficacy of PPO-inhibiting herbicides (PDF)

Alternative Crops

• Forage soybeans and blue Hopi flint corn as alternative crops on the Palouse (PDF)

Precipitation

Pullman

Day	Sept 2024	Oct 2024	Nov 2024	Dec 2024	Jan 2025	Feb 2025	Mar 2025	April 2025	May 2025	June 2025	July 2025	Aug 2025
1	0	0	0.14	0	0.02	0.58	0	0.25	0	0	0	0.17
2	0	0	0.12	0	0.05	0	0	0.02	0	0	0	0
3	0	0	0.16	0	0.12	0	0	0	0	0	0	0
4	0	0.04	0.03	0	0.49	0.06	0	0.02	0.01	0	0	0
5	0	0	0.32	0	0.35	0.31	0.01	0	0	0	0	0
6	0	0	0	0	0.06	0.02	0	0	0	0	0	0
7	0	0	0	0	0	0	0	0.08	0	0	0	0.02
8	0	0	0	0.3	0.02	0	0	0.56	0	0	0	0
9	0	0	0	0.04	0	0.1	0	0.2	0	0	0	0
10	0	0	0.05	0	0	0	0.06	0	0	0	0	0
11	0	0	0.01	0	0.17	0	0.09	0	0.03	0	0	0
12	0.2	0	0.01	0	0	0	0.07	0	0.23	0	0	0
13	0	0	0	0.11	0	0	0.29	0	0.25	0	0	0
14	0	0	0.41	0.2	0	0.04	0.05	0	0.01	0	0	0
15	0.32	0	0	0.03	0	0.08	0.15	0	0	0	0	0
16	0	0.33	0.05	0	0	0.12	0.28	0	0.12	0	0	0.13
17	0	0.18	0.33	0.11	0	0.37	0.16	0	0.04	0	0	0
18	0	0	0.59	0.34	0	0.2	0.14	0	0.09	0	0	0
19	0	0	0.01	0	0	0.02	0	0	0.03	0	0	0
20	0	0	0.21	0	0	0.47	0.03	0.01	0.16	0	0	0
21	0	0.25	0.03	0	0	0	0.13	0	0	0	0.03	0
22	0.01	0.34	0.47	0.22	0	0.02	0.39	0	0	0.07	0.01	0
23	0	0	0.53	0.15	0	0.38	0.08	0	0	0.04	0	0
24	0	0	0.79	0.02	0	0.84	0.28	0	0	0	0	0
25	0	0	0.03	0.58	0	0.2	0.02	0	0	0	0	0
26	0	0	0.01	0.12	0	0	0	0	0	0	0	0.04
27	0	0	0.02	0.12	0	0	0	0	0	0	0	0
28	0	0.02	0	0.29	0	0	0.12	0	0	0	0	0
29	0	0	0	0.16	0	No data available	0.13	0.02	0	0	0	No data available
30	0.05	0	0	0.29	0	No data available	0	0.07	0	0	0	No data available
31	No data available	0.36	No data available	0.09	0	No data available	0.09	No data available	0	No data available	0	No data available

Precipitation in inches.
Precipitation from Sept 1, 2024 – Aug 31, 2025, Total = 19.96 inches; Normal average = 20.41 inches.
Normal precipitation based on 1991-2020 data; Depart = departure from normal.
Data provided by NOAA for station USC00456789, Pullman, WA.

Statistic	Sept 2024	Oct 2024	Nov 2024	Dec 2024	Jan 2025	Feb 2025	Mar 2025	April 2025	May 2025	June 2025	July 2025	Aug 2025
Total	0.58	1.52	4.32	3.17	1.28	3.81	2.57	1.23	0.97	0.11	0.04	0.36
Normal	2.67	1.94	2.05	1.96	1.81	1.22	0.44	0.48	0.65	1.8	2.62	2.77
Depart	-2.09	-0.42	2.27	1.21	-0.53	2.59	2.13	0.75	0.32	-1.69	-2.58	-2.41

Precipitation in inches.
Precipitation from Sept 1, 2024 – Aug 31, 2025, Total = 19.96 inches; Normal average = 20.41 inches.
Normal precipitation based on 1991-2020 data; Depart = departure from normal.
Data provided by NOAA for station USC00456789, Pullman, WA.

Davenport

Day	Sept 2024	Oct 2024	Nov 2024	Dec 2024	Jan 2025	Feb 2025	Mar 2025	April 2025	May 2025	June 2025	July 2025	Aug 2025
1	0	0	0.19	0	0	0.29	0	0.04	0	0	0	0
2	0	0	0.71	0	0	0	0	0.02	0	0	0	0
3	0	0	0.11	0	0.07	0	0	0	0	0	0	0
4	0	0	0.04	0	0.43	0	0	0	0.05	0	0	0
5	0	0.05	0.3	0	0.24	0	0.03	0	0	0	0.08	0
6	0	0	0	0	0	0.06	0	0	0	0	0	0
7	0	0	0	0	0	0	0	0.37	0	0	0	0.22
8	0	0	0	0.11	0	0	0	0.16	0	0	0	0.12
9	0	0	0	0	0	0	0	0.02	0	0	0	0
10	0	0	0.05	0	0	0	0	0	0	0	0	0
11	0	0	0.03	0	0	0	0	0	0	0	0	0
12	0	0	0	0	0	0	0	0	0.23	0	0	0
13	0	0	0	0	0	0	0.42	0	0.11	0	0	0
14	0.03	0	0.68	0.32	0	0	0	0	0.09	0	0	0
15	0	0	0	0	0	0.08	0.11	0	0.03	0	0	0.02
16	0.02	0.05	0	0	0	0.12	0.19	0	0	0	0	0.11
17	0	0	0.1	0.07	0	0.07	0	0	0.13	0	0	0
18	0	0	0	0.53	0	0	0	0	0.11	0	0	0
19	0	0	0	0	0	0	0	0.09	0.03	0	0	0
20	0	0	0.11	0	0	0.06	0	0	0.47	0	0	0
21	0	0.16	0.23	0	0	0	0	0	0	0	0	0
22	0	0.17	0.32	0.2	0	0.07	0.54	0	0	0	0.04	0
23	0	0	0.33	0.17	0	0.32	0	0	0	0.11	0	0
24	0	0	0	0.26	0	0.32	0.12	0	0	0	0	0
25	0	0	0.33	0	0	0	0	0	0	0	0	0
26	0	0.04	0	0.52	0	0	0	0	0.13	0	0	0
27	0	0.17	0	0.07	0	0	0.21	0	0	0	0	0
28	0	0	0	0	0	0	0.15	0	0	0	0	0
29	0	0	0	0	0	No data available	0.03	0.11	0	0	0	0
30	0	0	0	0.66	0	No data available	0	0.03	0	0	0	0
31	No data available	0.15	No data available	0	0.13	No data available	No data available	No data available	0	No data available	0	0

Precipitation in inches.
Precipitation from Sept 1, 2024 – Aug 31, 2025, Total = 14.26 inches; Normal annual = 13.97 inches
Normal precipitation based on 1991-2020 data; Depart = departure from normal.
Data provided by NOAA for station USC00452007, Davenport, WA.

Statistic	Sept 2024	Oct 2024	Nov 2024	Dec 2024	Jan 2025	Feb 2025	Mar 2025	April 2025	May 2025	June 2025	July 2025	Aug 2025
Total	0.05	0.79	3.53	2.91	0.87	1.39	1.8	0.84	1.38	0.11	0.12	0.47
Normal	1.73	0.99	1.53	1.11	1.37	1.15	0.42	0.3	0.49	1.26	1.72	1.9
Depart	-1.68	-0.2	2	1.8	-0.5	0.24	1.38	0.54	0.89	-1.15	-1.6	-1.43

Precipitation in inches.
Precipitation from Sept 1, 2024 – Aug 31, 2025, Total = 14.26 inches; Normal annual = 13.97 inches
Normal precipitation based on 1991-2020 data; Depart = departure from normal.
Data provided by NOAA for station USC00452007, Davenport, WA.

Lind

Day	Sept 2024	Oct 2024	Nov 2024	Dec 2024	Jan 2025	Feb 2025	Mar 2024	April 2025	May 2025	June 2025	July 2025	Aug 2025
1	0	0	0.2	0	0.06	0	0	0.18	0	0	0	0
2	0	0	0.15	0	0.07	0	0	0	0	0	0	0
3	0	0	0	0	0.33	0	0	0	0.02	0	0	0
4	0	0.05	0.13	0	0.31	0.01	0	0	0	0	0	0
5	0	0	0	0	0.07	0.01	0	0	0	0	0	0
6	0	0	0	0	0	0	0	0	0	0	0	0
7	0	0	0	0.01	0.02	0	0	0.58	0	0	0	0
8	0	0	0	0	0.02	0.12	0	0.04	0	0	0	0
9	0	0	0	0.06	0.01	0.02	0	0	0	0	0	0
10	0	0	0.06	0	0	0	0	0	0	0	0	0
11	0	0	0	0	0	0	0	0	0.01	0	0	0
12	0	0	0	0	0	0	0.05	0	0.2	0	0	0
13	0	0	0.48	0.03	0	0.05	0.26	0	0.06	0	0	0
14	0.03	0	0	0.13	0.01	0.02	0	0	0	0	0	0
15	0	0	0	0	0	0.16	0.09	0	0	0	0	0
16	0	0.04	0	0.09	0	0.04	0	0	0	0	0	0
17	0	0	0.09	0.15	0	0.1	0	0	0	0	0	0
18	0	0	0.02	0.11	0	0	0	0	0	0	0	0
19	0	0	0	0	0	0.24	0	0.05	0.07	0	0	0
20	0	0	0.36	0	0	0	0	0	0.11	0	0	0
21	0	0.2	0.13	0.09	0	0	0.04	0	0	0	0.05	0
22	0	0	0.67	0.15	0	0.13	0.05	0	0.02	0	0.05	0
23	0	0	0.18	0	0	0.31	0.11	0	0	0	0	0
24	0	0	0.05	0.47	0	0.18	0	0	0	0	0	0
25	0	0	0.03	0.05	0	0.09	0	0	0	0	0	0
26	0	0	0	0.38	0	0	0	0	0.02	0	0	0
27	0	0	0	0.02	0	0	0.03	0	0	0	0	0
28	0	0.06	0	0.11	0	0	0.07	0	0	0	0	0.05
29	0	0.01	0	0.2	0	No data available	0	0.05	0	0	0	0
30	0	0	0	0	0	No data available	0	0	0	0	0	0
31	No data available	0.16	No data available	0	0.17	No data available	0.04	No data available	0	No data available	0	0

Precipitation in inches.
Precipitation from Sept 1, 2024 – Aug 31, 2025, Total = 10.0 inches; Normal annual = 10.13 inches
Normal precipitation based on 1991-2020 data; Depart = departure from normal.
Data provided by NOAA for station USC00454679, Lind, WA.

Statistic	Sept 2024	Oct 2024	Nov 2024	Dec 2024	Jan 2025	Feb 2025	Mar 2025	April 2025	May 2025	June 2025	July 2025	Aug 2025
Total	0.03	0.52	2.55	2.05	1.07	1.48	0.74	0.9	0.51	0	0.1	0.05
Normal	1.29	0.88	1.05	0.83	0.86	0.69	0.34	0.24	0.34	0.92	1.29	1.4
Depart	-1.26	-0.36	1.5	1.22	0.21	0.79	0.4	0.66	0.17	-0.92	-1.19	-1.35

Precipitation in inches.
Precipitation from Sept 1, 2024 – Aug 31, 2025, Total = 10.0 inches; Normal annual = 10.13 inches
Normal precipitation based on 1991-2020 data; Depart = departure from normal.
Data provided by NOAA for station USC00454679, Lind, WA

Off-Label or Experimental-Use Disclaimer

Some of the pesticides discussed in this presentation were tested under an experimental use permit granted by WSDA. Application of a pesticide to a crop or site that is not on the label is a violation of pesticide law and may subject the applicator to civil penalties up to $7,500. In addition, such an application may also result in illegal residues that could subject the crop to seizure or embargo action by WSDA and/or the U.S. Food and Drug Administration. It is your responsibility to check the label before using the product to ensure lawful use and obtain all necessary permits in advance.

Statistical Inference

Statistical inference is the process of drawing conclusions from experimental data that can be applied to a larger population or landscape. In our research, we replicate treatments in each trial to provide the variability needed to determine if differences are real or occur just by chance. While lack of statistical difference may indeed result from similar treatment effects or outcomes, e.g., a 100 lb/A fertilizer rate produced a similar yield to 101 lb/A, differences can also result from experimental or random error associated with the trial. We normally recognize statistical significance at the 95% probability level, which means there is a 95% probability that observed differences represent actual treatment effects and are not due to chance. This is indicated in our reports with the symbols P≤0.05 or α=0.05. We typically show statistical differences between treatments with the use of alphabetical letters. Treatment means that are statistically similar will be followed the same letter.

View the entire 2024 Weed Control Report (pdf)

Cropping Systems

• Germination periodicity of weedy amaranth (Amaranthus spp.) in PNW wheat systems (pdf)
• Finesse® Cereal and Fallow Herbicide timing for smooth scouringrush control in wheat/fallow cropping systems (pdf)
• Field horsetail control in the Palouse annual cropping region (pdf)
• Smooth Scouringrush control with Finesse® Cereal and Fallow Herbicide in winter wheat/spring wheat/no-till fallow cropping systems (pdf)
• Control of smooth scouringrush with Finesse® Cereal and Fallow Herbicide and RT 3® three years after application – Reardan, WA (pdf)

Winter Wheat

• Diflufenican and metribuzin safety and efficacy in winter wheat (pdf)
• Winter wheat yield following Treflan® HFP applied the previous year in spring canola (pdf)
• Metribuzin tolerance in Rydrich MZ winter wheat (pdf)
• Yellow rust control in winter wheat (pdf)

Spring Wheat

• Tolvera® safety and efficacy in spring wheat (pdf)

Pulse Crops (Chickpeas, Lentils, Dry Peas)

• Italian ryegrass control and crop yield in winter peas (pdf)
• Fall-applied Eptam® 7-E herbicide for Italian ryegrass control in spring-planted crops (pdf)

Spring Canola

• Italian ryegrass control with BAS 101005H glufosinate and Sonalan® HFP in spring canola (pdf)

Kentucky Bluegrass

• Alion® crop safety and efficacy in Kentucky Bluegrass (pdf)
• Anthem® Flex crop safety and efficacy in Kentucky Bluegrass (pdf)
• Herbicide panel in Kentucky Bluegrass (pdf)

Chemical Fallow

• HPPD report (pdf)
• Post-harvest Russian thistle control in spring wheat stubble with BAS 85101H (pdf)
• Russian thistle control in chemical fallow with fall- and late winter-applied soil- active herbicides (pdf)
• Russian thistle control in chemical fallow with sulfentrazone applied in fall and late winter (pdf)
• Russian thistle control in chemical fallow with Talinor® herbicide (pdf)

Precipitation Data

Pullman

Day	Sept 2023	Oct 2023	Nov 2023	Dec 2023	Jan 2024	Feb 2024	Mar 2024	April 2024	May 2024	June 2024	July 2024	Aug 2024
1	0	0.02	0	0.06	0	0	0.15	0	0.01	0	0	0
2	0	0	0.53	0.35	0	0.1	0.25	0	0	0	0	0
3	0.03	0.48	0.01	0.28	0	0	0.01	0	0	1.02	0	0
4	0	0	0.11	0.18	0.02	0.11	0.06	0.14	0	0.2	0	0
5	0	0	0.75	0.12	0.03	0.02	0	0.66	0.11	0.03	0	0.09
6	0	0	0.05	0.04	0	0.04	0	0.01	0.38	0	0	0.17
7	0	0	0.38	0.22	0.24	0	0	0	0.01	0	0	0
8	0.34	0	0.07	0	0.04	0.02	0	0	0	0	0	0
9	0	0	0	0	0.36	0.05	0	0.13	0	0	0	0
10	0	0	0	0.83	0.03	0.04	0.01	0	0	0	0	0
11	0	0.24	0.01	0.51	0.03	0.01	0.12	0	0	0	0	0
12	0	0.02	0.05	0.01	0.18	0.05	0.3	0.04	0	0	0	0
13	0	0	0	0	0	0.11	0.1	0	0	0	0	0
14	0	0	0	0	0	0	0	0	0	0	0	0.02
15	0	0	0.12	0	0	0.06	0	0	0	0	0	0
16	0	0	0.39	0	0	0.1	0	0	0	0.02	0	0.04
17	0	0.07	0	0	0.07	0.03	0	0	0.14	0	0	0
18	0	0	0	0	0.29	0	0	0	0	0.05	0	0
19	0	0	0.21	0.11	0.15	0.07	0	0	0.01	0	0	0
20	0	0	0	0	0	0.05	0	0	0	0	0	0
21	0.19	0	0	0.01	0.14	0.09	0	0	0.01	0	0	0.15
22	0.02	0	0	0	0.14	0.12	0.05	0	0.46	0	0	0
23	0	0	0	0.07	0.11	0	0.09	0	0.02	0	0	0
24	0	0	0.01	0	0.02	0	0.3	0	0	0	0	0.2
25	0.02	0.27	0	0	0.2	0	0.13	0	0	0	0	0
26	0.23	0.02	0	0.11	0	0.45	0.01	0.08	0	0	0	0
27	0.08	0.03	0	0	0.07	0.04	0.01	0	0	0	0	0
28	0.02	0	0	0	0.24	0.18	0.29	0.01	0	0	0	0
29	0	0	0	0	0.01	0.16	0.07	0	0.03	0	0	0
30	0.04	0	0	0	0	No data available	0	0.04	0.1	0.06	0.01	0
31	No data available	0	No data available	0.08	0	No data available	0	No data available	0	No data available	0	0

Precipitation in inches.
Sept 1, 2023–Aug 31, 2024, Total = 18.46 inches; Normal average = 20.41 inches.
Normal precipitation based on 1991-2020 data; Depart = departure from normal.

Statistic	Sept 2023	Oct 2023	Nov 2023	Dec 2023	Jan 2024	Feb 2024	Mar 2024	April 2024	May 2024	June 2024	July 2024	Aug 2024
Total	0.97	1.15	2.69	2.98	2.37	1.9	1.95	1.11	1.28	1.38	0.01	0.67
Normal	2.67	1.94	2.05	1.96	1.81	1.22	0.44	0.48	0.65	1.8	2.62	2.77
Depart	-1.7	-0.79	0.64	1.02	0.56	0.68	1.51	0.63	0.63	-0.42	-2.61	-2.1

Precipitation in inches.
Sept 1, 2023–Aug 31, 2024, Total = 18.46 inches; Normal average = 20.41 inches.
Normal precipitation based on 1991-2020 data; Depart = departure from normal.

Lind

Day	Sept 2023	Oct 2023	Nov 2023	Dec 2023	Jan 2024	Feb 2024	Mar 2024	April 2024	May 2024	June 2024	July 2024	Aug 2024
1	0	0	0	0.16	0	0.02	0	0	0.1	0	0	0
2	0	0	0.58	0.1	0	0	0.06	0	0	0.08	0	0
3	0	0.11	0.02	0.16	0.14	0	0	0	0	0.34	0	0
4	0	0	0.56	0.31	0	0	0	0.07	0	0	0	0.03
5	0	0	0	0.37	0.07	0.07	0	0.06	0.27	0	0	0
6	0	0	0.11	0.38	0.04	0.04	0	0.04	0.15	0	0	0
7	0	0	0.05	0.48	0	0	0	0	0	0	0	0
8	0	0	0	0.02	0	0	0	0	0	0	0	0
9	0	0	0	0	0	0	0	0	0	0	0	0
10	0	0.02	0	0.48	0	0	0	0	0	0	0	0
11	0	0	0	0.04	0	0	0	0	0	0	0	0
12	0	0.17	0	0.02	0	0.03	0.04	0	0	0	0	0
13	0	0	0.07	0	0	0.01	0	0	0	0	0	0
14	0	0	0	0	0	0	0	0	0	0	0	0
15	0	0	0.15	0	0	0	0	0	0	0.11	0	0
16	0	0.02	0.02	0	0	0	0	0	0	0	0	0
17	0	0	0	0	0.22	0	0	0	0	0	0	0
18	0	0	0	0	0	0.01	0	0.02	0	0	0	0
19	0	0	0.04	0.24	0.07	0.05	0	0	0	0	0	0
20	0.16	0	0	0.02	0.02	0	0	0	0	0	0	0
21	0	0	0	0.02	0.13	0	0	0	0	0	0	0.02
22	0	0	0	0.15	0.05	0	0	0	0.15	0	0	0
23	0	0	0	0	0	0	0	0	0	0	0	0.05
24	0	0	0	0	0.05	0	0	0	0	0	0	0
25	0.01	0.29	0	0	0.02	0	0	0	0	0	0	0
26	0.04	0	0	0.09	0	0	0.06	0	0	0	0	0
27	0.06	0	0	0.03	0.41	0.05	0.19	0.01	0	0	0	0
28	0	0	0	0.07	0.03	0	0.08	0	0	0	0	0
29	0	0	0	0	0	0.2	0	0	0	0	0	0
30	0	0	0	0	0	No data available	0	0.04	0	0	0	0
31	No data available	0	No data available	0	0	No data available	0	No data available	0	No data available	0	0

Precipitation in inches.
Sept 1, 2023 – Aug 31, 2024, total = 9.32 inches; Normal annual = 10.13 inches
Normal precipitation based on 1991-2020 data; Depart = departure from normal.

Statistic	Sept 2023	Oct 2023	Nov 2023	Dec 2023	Jan 2024	Feb 2024	Mar 2024	April 2024	May 2024	June 2024	July 2024	Aug 2024
Total	0.27	0.61	1.6	3.14	1.25	0.48	0.43	0.24	0.67	0.53	0	0.1
Normal	1.29	0.88	1.05	0.83	0.86	0.69	0.34	0.24	0.34	0.92	1.29	1.4
Depart	-1.02	-0.27	0.55	2.31	0.39	-0.21	0.09	0	0.33	-0.39	-1.29	-1.3

Precipitation in inches.
Sept 1, 2023 – Aug 31, 2024, total = 9.32 inches; Normal annual = 10.13 inches
Normal precipitation based on 1991-2020 data; Depart = departure from normal.

Davenport

Day	Sept 2023	Oct 2023	Nov 2023	Dec 2023	Jan 2024	Feb 2024	Mar 2024	April 2024	May 2024	June 2024	July 2024	Aug 2024
1	0.03	0	0	0.07	0	0.09	0.19	0	0	0	0.05	0
2	0	0	0.19	0.25	0	0.11	0.17	0	0	0	0	0
3	0	0	0.33	0	0	0	0	0	0	0.32	0	0
4	0	0	0.15	0	0	0.13	0.06	0	0	0.1	0	0
5	0.07	0	0.31	0.44	0.07	0.04	0	0.36	0	0	0	0
6	0	0	0.07	0.49	0	0.43	0	0.23	0.54	0	0	0
7	0	0	0.32	0.47	0.13	0	0	0	0	0	0	0
8	0	0	0	0.02	0	0	0	0	0	0	0	0
9	0	0	0	0	0.19	0	0	0	0	0	0	0
10	0	0	0	0.42	0	0	0.02	0	0	0	0	0
11	0	0.06	0	0	0	0	0.03	0	0	0	0	0
12	0	0.37	0	0	0	0.22	0.12	0	0	0	0	0
13	0	0	0.04	0	0	0.09	0	0	0	0	0	0
14	0	0	0	0	0	0	0	0	0	0	0	0
15	0	0	0	0	0	0	0	0	0	0	0	0
16	0	0	0	0	0	0.04	0	0	0	0.06	0	0
17	0	0.03	0	0	0.03	0	0	0	0	0	0	0
18	0	0	0	0.01	0.15	0	0	0	0	0	0	0
19	0	0	0.22	0.13	0.07	0.02	0	0.61	0	0	0	0
20	0	0	0	0.1	0	0.17	0	0	0	0	0	0
21	0	0	0	0	0.26	0.04	0	0	0	0	0	0
22	0	0	0	0	0.13	0	0	0	0.3	0	0	0
23	0	0	0	0.07	0.03	0	0	0	0	0	0	0
24	0	0	0	0	0	0	0	0	0	0	0	0.05
25	0	0.1	0	0	0.1	0	0	0	0	0	0	0
26	0.1	0.08	0	0.06	0	0	0	0.03	0	0	0	0
27	0.12	0.03	0	0	0.11	0	0	0	0	0	0	0
28	0.24	0	0	0.02	0.27	0	0.37	0	0	0	0	0
29	0.1	0	0	0	0	0	0	0	0	0	0	0
30	0	0	0	0	0	No data available	0	0	0	0	0	0
31	No data available	0	No data available	0	0	No data available	0	No data available	0	No data available	0	0

Precipitation in inches.
Sept 1, 2023 – Aug 31, 2024, total = 12.04 inches; Normal annual = 13.97 inches
Normal precipitation based on 1991-2020 data; Depart = departure from normal.

Statistic	Sept 2023	Oct 2023	Nov 2023	Dec 2023	Jan 2024	Feb 2024	Mar 2024	April 2024	May 2024	June 2024	July 2024	Aug 2024
Total	0.66	0.67	1.63	2.55	1.54	1.38	0.96	1.23	0.84	0.48	0.05	0.05
Normal	1.73	0.99	1.53	1.11	1.37	1.15	0.42	0.3	0.49	1.26	1.72	1.9
Depart	-1.07	-0.32	0.1	1.44	0.17	0.23	0.54	0.93	0.35	-0.78	-1.67	-1.85

Precipitation in inches.
Sept 1, 2023 – Aug 31, 2024, total = 12.04 inches; Normal annual = 13.97 inches
Normal precipitation based on 1991-2020 data; Depart = departure from normal.

Off-Label or Experimental-Use Disclaimer

Some of the pesticides discussed in this presentation were tested under an experimental use permit granted by WSDA. Application of a pesticide to a crop or site that is not on the label is a violation of pesticide law and may subject the applicator to civil penalties up to $7,500. In addition, such an application may also result in illegal residues that could subject the crop to seizure or embargo action by WSDA and/or the U.S. Food and Drug Administration. It is your responsibility to check the label before using the product to ensure lawful use and obtain all necessary permits in advance.

Statistical Inference

Statistical inference is the process of drawing conclusions from experimental data that can be applied to a larger population or landscape. In our research, we replicate treatments in each trial to provide the variability needed to determine if differences are real or occur just by chance. While lack of statistical difference may indeed result from similar treatment effects or outcomes, e.g., a 100 lb/A fertilizer rate produced a similar yield to 101 lb/A, differences can also result from experimental or random error associated with the trial. We normally recognize statistical significance at the 95% probability level, which means there is a 95% probability that observed differences represent actual treatment effects and are not due to chance. This is indicated in our reports with the symbols P≤0.05 or α=0.05. We typically show statistical differences between treatments with the use of alphabetical letters. Treatment means that are statistically similar will be followed the same letter.

View the entire 2023 Weed Control Report (pdf)

Cropping Systems

• Effect of Pronamide Kerb® Herbicide on Winter Wheat Yield Following Applications in Spring Canola (pdf)
• Long-term Control of Smooth Scouringrush with Finesse® and RT 3® in Wheat Cropping Systems Two Years After Treatment (pdf)
• Long-term Control of Smooth Scouringrush with Finesse® and RT 3® in Wheat Cropping Systems Three Years After Treatment (pdf)
• Long-term Smooth Scouringrush Control with Finesse® in Winter Wheat-Spring Wheat-No-till Fallow Cropping Systems (pdf)
• Winter Wheat Yield Following Treflan® Applied the Previous Year in Spring Canola (pdf)
• Finesse® Timing for Smooth Scouringrush Control in Wheat – Fallow Cropping Systems (pdf)
• Horsetail Control in the Palouse Annual Cropping Region (pdf)

Winter Wheat

• Yellow Rust Control in Winter Wheat (pdf)

Spring Wheat

• Safety and Efficacy of Tolpyralate + Bromoxynil Tank Mix on Spring Wheat (pdf)

Pulse Crops (Chickpeas, Lentils, Dry Peas)

• Bixlozone and Clomazone Crop Safety and Efficacy in Pulse Crops (pdf)
• Tough Efficacy on Common Lambsquarters (pdf)

Spring Canola

• Italian Ryegrass Control in Spring Canola Using Multiple Herbicide Modes of Action (pdf)
• Italian Ryegrass Control with Liberty® Herbicide in LibertyLink® Spring Canola (pdf)

Kentucky Bluegrass

• Alion Crop Safety and Efficacy in Kentucky Bluegrass (pdf)
• Anthem Flex Crop Safety and Efficacy in Kentucky Bluegrass (pdf)
• Outrider Crop Safety and Efficacy in Kentucky Bluegrass (pdf)
• Talinor Crop Safety and Efficacy in Kentucky Bluegrass (pdf)

Chemical Fallow

• Post-harvest Russian Thistle Control in Spring Wheat Stubble (pdf)
• Russian Thistle Control in Chemical Fallow (pdf)

Precipitation Data

• Crop Year Precipitation for Pullman and Davenport (pdf)

Statistical Inference

• Statistical inference (pdf)

View the entire 2022 Weed Control Report (pdf)

Cropping Systems

• Response of Italian ryegrass to crop rotation and indaziflam in Eastern Washington (pdf)
• Smooth Scouringrush control with Finesse® three years after application in winter wheat/spring wheat/no-till fallow cropping systems (pdf)

Winter Wheat

• Evaluation of Maestro EXT for the control of mayweed chamomile in winter wheat (pdf)
• Evaluation of orthosulfamuron + pyraflufen-ethyl for volunteer canola management (pdf)
• Evaluation of Peak® with tank mix partners for the control of mayweed chamomile in winter wheat (pdf)
• Zidua® for downy brome control in winter wheat (pdf)
• Winter wheat yield following rush skeletonweed control with Tordon® 22K in no-till fallow (pdf)
• Winter wheat yield following Treflan® applied the previous year in spring canola for Italian ryegrass control (pdf)
• Assessing the risk of Kerb® SC herbicide carryover to winter wheat following use in spring canola (pdf)

Spring Wheat

• Evaluation of triallate formulations for the control of Italian ryegrass in spring wheat (pdf)

Chickpeas

• Birdsrape mustard and mayweed chamomile control in chickpeas with herbicides (pdf)
• Goal® and Kerb® in chickpea (pdf)

Spring Canola

• Italian ryegrass control in spring canola using multiple herbicide modes of action (pdf)

Kentucky Bluegrass

• Anthem Flex® and Outrider® for crop safety and grass control in Kentucky bluegrass (pdf)

Chemical Fallow

• Evaluation of BAS 85101H in tank mix combination with glyphosate for Russian-thistle control in chemical fallow (pdf)
• Effect of surfactants on the efficacy of RT® 3 for control of smooth scouringrush (pdf)
• Long-term control of smooth scouringrush control with RT 3® and Finesse® one year after application – Reardan, WA (pdf)
• Long-term control of smooth scouringrush control with RT 3® and Finesse® in wheat/fallow cropping systems two years after treatment at Dayton and Steptoe, WA (pdf)

Winter Wheat

• Evaluation of Avadex^® Microactiv™ herbicide for the control of Italian ryegrass (pdf)
• Preemergence and Postemergence Herbicides for Control of Italian ryegrass (Lolium multiflorum) in Winter Wheat (pdf)
• Evaluation of Peak^® with tank mix partners for the control of mayweed chamomile in winter wheat (pdf)
• Long-term control of smooth scouringrush with Finesse® in a no-till winter wheat/fallow rotation – final evaluation (pdf)
• Smooth scouringrush control with Finesse® in winter wheat/spring wheat/no-till fallow rotations – continued (pdf)

Spring Wheat

• Evaluation of Axial® Bold plus Talinor^™ in tank mix combinations with nitrogen sources for crop safety, common lambsquarters and mayweed chamomile control in spring wheat (pdf)
• Evaluation of Axial^® Bold plus Huskie^® in tank mix combinations for common lambsquarters and mayweed chamomile control in spring wheat (pdf)
• Evaluation of a new formulation of Batalium^™ herbicide for crop safety and the control of mayweed chamomile in spring wheat (pdf)
• Italian ryegrass seed shatter in spring wheat (pdf)

Chemical Fallow

• Postharvest control of Russian-thistle with herbicides (pdf)
• Comparison of RT^® 3 and surfactants for control of smooth scouringrush – one year after treatment (pdf)
• Comparison of RT^® 3 and surfactants for control of smooth scouringrush during a drought year – 2021 (pdf)
• Efficacy of Silwet^® L77 organosilicone surfactant with RT^® 3 glyphosate applied in no-till fallow for control of smooth scouringrush – 2 years after treatment (pdf)
• Long-term control of smooth scouringrush control with RT 3^® and Finesse^® in wheat/fallow cropping systems (pdf)
• Long-term control of smooth scouringrush control with RT 3^® and Finesse^® applied in wheat_fallow cropping systems – replicated in 2021 (pdf)
• Rush skeletonweed control with Tordon 22K in no-till fallow is affected by application method, herbicide rate, and field conditions (pdf)

Winter Peas

• Evaluation of Storm® for crop safety and efficacy in winter pea (pdf)

Spring Canola

• Italian ryegrass control in spring canola combining multiple modes of action (pdf)

Weed Seed Bank Management

• Seed bank management for Italian ryegrass in eastern Washington (pdf)

Precipitation Data

• Precipitation Records for Pullman and Davenport (pdf)

View the entire 2021 WSU Weed Control Report (pdf).

View the full 2020 Weed Control Report (pdf).

Harvest Weed Seed Control

• Chaff-lining to control the seed bank of Italian ryegrass (pdf)

Winter Wheat

• RyzUp SmartGrass in wheat to stimulate Italian ryegrass germination (pdf)
• Downy brome control with Fierce and RyzUp Smartgrass in winter wheat (pdf)
• Evaluation of Aggressor herbicide for the control of downy brome in CoAXium wheat production system (pdf)
• Evaluation of Avadex MicroActiv herbicide for the control of downy brome and Italian ryegrass (pdf)
• Evaluation of Osprey Xtra for the control of downy brome and Italian ryegrass in winter wheat (pdf)
• Herbicide timings for the control of Italian ryegrass in winter wheat (pdf)
• Control of mayweed chamomile in winter wheat_Hall Farm (pdf)
• Control of mayweed chamomile in winter wheat_Nelson Farm (pdf)
• Evaluation of winter wheat tolerance to Talinor in combination with tank mix partners (pdf)
• Smooth scouringrush control with Finesse in winter wheat/spring wheat/no-till fallow rotations (pdf)
• Smooth scouringrush control with Finesse in no till winter wheat/fallow rotations (pdf)
• Control of smooth scouringrush with sulfonylurea herbicides and non-ionic surfactants (pdf)

Spring Wheat

• Evaluation of Huskie FX for the control of common lambsquarters and mayweed chamomile in spring wheat (pdf)
• Control of mayweed chamomile in spring wheat (pdf)

Chemical Fallow

• Postemergence weed management in fallow using weed sensing spray technology (pdf)
• Season long fallow weed management using weed sensing spray technology and glyphosate (pdf)
• Postemergence weed management in fallow using weed sensing spray technology_tank mixes and organic herbicides (pdf)
• Application of the WEED-IT precision sprayer for rush skeletonweed control in fallow (pdf)
• Rush skeletonweed control in fallow (pdf)
• Comparison of surfactants added to glyphosate for control of smooth scouringrush (pdf)
• Efficacy of Silwet L77 organosilicone surfactant for control of smooth scouringrush with RT 3 glyphosate (pdf)
• Smooth scouringrush control in winter wheat following applications of glyphosate with surfactants in fallow (pdf)
• Smooth scouringrush control with Glyphosate and Finesse applied in fallow (pdf)
• Evaluation of preemergence herbicides for the control of Russian thistle in chemical fallow (pdf)
• Postharvest control of Russian-thistle with herbicides (pdf)

Chickpeas

• Preharvest chickpea and weed desiccation (pdf)
• Birdsrape mustard control in chickpeas with soil applied herbicides (pdf)
• Birdsrape mustard control in chickpeas with the experimental compound X (pdf)

Fall-sown Peas

• Evaluation of Storm for crop safety and efficacy in winter pea (pdf)
• Evaluation of Storm® and Ultra Blazer® for the control of tansy mustard in fall-sown peas (pdf)
• Evaluation of preemergence herbicides for the control of tumble mustard in fall sown peas (pdf)

Precipitation Data

• Precipitation Data, 2019 to 2020

Winter Wheat

• Evaluation of Aggressor^TM herbicide for the control of downy brome in the CoAXium^TM wheat production system (pdf)
• Weed control with Fierce^® and RyzUp SmartGrass^® (GA3) in winter wheat (pdf)
• Management of ALS-resistant Italian ryegrass with pyroxasulfone and sulfosulfuron in winter wheat (pdf)
• Weed control and crop response to Anthem^® Flex applied at different timings in winter wheat (pdf)

Spring Wheat

• Evaluation of PixxaroTM EC for the control of common lambsquarters in spring wheat (pdf)
• Evaluation of NUP 17063, dichlorprop-p, for the control of common lambsquarters in spring wheat (pdf)
• Evaluation of Talinor^TM in tank mix combinations with N sources for crop safety and common lambs and mayweed cham control in SW (pdf)
• Herbicide efficacy and crop safety of Affinity^® BroadSpec and Aim EC for broadleaf weed control in spring wheat (pdf)
• Italian ryegrass management with pyroxasulfone and sulfosulfuron in spring wheat (pdf)
• Residue removal during winter wheat harvest reduces Italian ryegrass in the following spring wheat crop (pdf)
• Evaluation of Axial Bold for wild oat control in spring wheat (pdf)

Chemical Fallow

• Surfactant comparison with RT 3 at 96 oz/A for control of smoth scouringrus Steptoe (pdf)
• Long-term control of smooth scouringrush with RT 3 glyphosate in no till fallow (pdf)
• Efficacy of Silwet^® L77 organosilicone surfactant with RT 3 herbicide for control of smooth scouringrush in no till fallow (pdf)
• Effect of sulfonylurea herbicides and non ionic surfactants on smooth scouringrush in no till fallow — Steptoe WA (pdf)
• Smooth Scouringrush control in no till winter wheat fallow at Omak, WA — year three (pdf)
• Rush skeletonweed control in no-till winter wheat fallow — LaCrosse and Hay, WA (pdf)
• Evaluation of preemergence herbicides for the control of Russian-thistle in chemical fallow (pdf)
• Postemergence weed management in fallow using weed sensing spray systems (pdf)
• Weed management in fallow using a weed sensing sprayer: economic analysis (pdf)
• Weed control with Fierce^® and RyzUp SmartGrass^® (GA₃) in fallow (pdf)

Chickpeas

• Early spring Spartan^® applications followed by post plant pre and post herbicides for broadleaf weed control in chickpea (pdf)
• Common lambsquarters control with pyridate in chickpeas (pdf)
• Evaluation of a new paraquat formulation Gramoxone^® 3SL post plant preemergence in chickpeas (pdf)

Fall-sown Peas

• Evaluation of post plant preemergence herbicides for the control of mustard species in ‘Blaze’ fall sown peas (pdf)
• Evaluation of spring-applied postemergence broadleaf herbicides for the control of mustard species in fall sown peas (pdf)
• Experimental herbicide systems for broadleaf weed control in winter pea (pdf)

Grass Seed

• Indaziflam and pyroxasulfone on turfgrass establishment for seed looking at crop tolerance and weed efficacy (pdf)
• Gibberellic acid (GA₃) preemergence to turfgrass for seedling establishment (pdf)

Conservation Reserve Program (CRP)

• Downy brome and ventenata control with indaziflam in CRP: Year 3 (pdf)
• Annual invasive grass weed control with indaziflam and propoxycarbazone in CRP: Year 2 (pdf)
• EsplAnade^® at early preemergence timings for annual invasive grass weed control in CRP: Year 2 (pdf)
• Established perennial grass tolerance to EsplAnade^® applied for annual grass control: Year 2 (pdf)
• Established perennial grass tolerance to indaziflam & propoxycarbazone applied for annual grass control: Year 1 (pdf)
• Tolerance of established perennials to EsplAnade^® applied at different timings: Year 1 (pdf)

Cropping Systems

• Organic management of creeping perennials Canada thistle and field bindweed: Year 1 (pdf)
• Single high rate compost application in wheat with winter pea rotation: A long-term study (pdf)

Precipitation Records for Davenport and Pullman: Sept 2018 – Aug 2019 (pdf)

View the entire 2019 Weed Control Report (pdf).

Winter Wheat

• Evaluation of Talinor™ in tank mix combinations for crop safety and downy brome control in Clearfield® Plus winter wheat (pdf)
• Crop Tolerance of Talinor™ with Slow Release Fertilizers in Winter Wheat and Mayweed Chamomile Control (pdf)
• Postemergence mayweed chamomile management in winter wheat without clopyralid (pdf)
• Preemergence and postemergence herbicides for Bromus spp. control in winter wheat in Anatone, WA (pdf)
• Preemergence and postemergence herbicides for Bromus spp. control in winter wheat in Ewan, WA (pdf)
• Evaluation of application timings with Zidua® SC for the control of Italian ryegrass in winter wheat (pdf)
• Evaluation of Osprey® Xtra for the control of jointed goatgrass in winter wheat (pdf)
• Evaluation of Aggressor™ herbicide for the control of cereal rye in the CoAXium™ wheat production system (pdf)
• Smooth Scouringrush control in no-till winter wheat/fallow at Omak, WA (pdf)
• 2017 Hail Damage Studies (pdf)

Spring Wheat

• Evaluation of GoldSky®, OpenSky™, PerfectMatch™, Starane® Flex and tank-mix partners for the control of common lambsquarters in ‘Seahawk’ spring wheat (pdf)
• Evaluation of WideMatch® for the control of common lambsquarters in spring wheat (pdf)
• Volunteer buckwheat control in irrigated spring wheat – year three (pdf)

Chemical Fallow

• Rush skeletonweed control in winter wheat fallow (pdf)
• Rope wick and broadcast herbicide applications for control of smooth scouringrush in winter wheat fallow (pdf)

Chickpeas

• Evaluation of Sandea® as a post plant, preemergence herbicide for crop tolerance and weed control in ‘Frontier’ chickpeas (pdf)
• Weed control and crop tolerance to paraquat applied at-cracking to chickpeas (pdf)
• Chickpea and lentil seeding rate study (pdf)

Dry Peas

• Evaluation of sulfentrazone and pyroxasulfone for crop safety in dry peas (pdf)

Fall-sown Peas

• Evaluation of Ultra Blazer® for the control of tumble mustard in ‘Windham’ fall-sown peas (pdf)
• Downy brome and tumble mustard control in ‘Windham’ fall-sown peas (pdf)
• Broadleaf weed control with Spartan applied preemergence in winter peas (pdf)

Lentils

• Evaluation of soil incorporation methods for Sonalan® HFP and their effects on safety for use in lentils (pdf)
• Evaluation of Anthem® Flex for crop tolerance and its effect on yield in ‘Pardina’ lentils (pdf)

Precipitation Records for Davenport and Pullman: Sept 2017 – Aug 2018 (pdf)

View the entire 2018 Weed Control Report (pdf).

Winter Wheat

• Evaluating Osprey® Xtra for Downy Brome and Tumble Mustard Control in Winter Wheat (pdf)
• Evaluation of Osprey® Xtra for the Control of Downy Brome in Winter Wheat (pdf)
• Broadleaf and Grass Weed Control with Spring Applications of Quelex^TM Plus Powerflex® HL in Winter Wheat (pdf)
• Preemergence and Postemergence Herbicides for Downy Brome Control in Clearfield® Winter Wheat (pdf)
• Evaluation of Application Timings with Zidua® for the Control of Italian Ryegrass in Winter Wheat (pdf)
• Evaluate Axiom® DF and Osprey® Xtra for the Control of Italian Ryegrass in Winter Wheat (pdf)
• Fall Application of Metribuzin for Italian Ryegrass Control After Preemergence Herbicide Failure (pdf)
• Evaluation of Pre/Post Applications for the Control of Rattail Fescue in Direct-seeded Soft White Winter Wheat (pdf)
• Evaluation of Osprey® Xtra for the Postemergence Control of Rattail Fescue in Direct-seeded Hard Red Winter Wheat (pdf)
• Mayweed Chamomile Control in Winter Wheat with Talinor^TM (pdf)
• Evaluation of Huskie® and Tankmix Partners for the Control of Mayweed Chamomile in Winter Wheat (pdf)
• Postemergence Mayweed Chamomile Control in Winter Wheat without Clopyralid (pdf)
• Rush Skeletonweed Control in Winter Wheat (pdf)

Spring Wheat

• Evaluation of Quelex^TM for the Control of Common Lambsquarters in Spring Wheat (pdf)
• Postemergence Mayweed Chamomile Control in Spring Wheat without Clopyralid (pdf)
• Volunteer Buckwheat Control in Irrigated Spring Wheat – Year Two (pdf)

Chemical Fallow

• Evaluation of Glyphosate Plus Adjuvants at Two-timing for the Control of Rattail Fescue in Fallow, 2017 (pdf)
• Kochiavore^TM in Combination with Adjuvants for the Control of Russian-thistle in Chemical Fallow (pdf)
• Sharpen® Plus Rugged® with Adjuvants for the Control of Russian Thistle in Chemical Fallow (pdf)
• Rush Skeletonweed Control with Fall Applications in Winter Wheat Stubble (pdf)
• Preemergence Herbicides for Downy Brome Control (pdf)

Grassland Management

• Annual Invasive Grass Weed Control with Indaziflam & Propoxycarbazone (pdf)
• Invasive Annual Grass Control with EsplAnade® and Method® 240SL (pdf)
• Invasive Annual Grass Control with Laramie and Glyphosate 5.4 + Laramie (pdf)

Potato Management

• Weed Management in Potatoes with Outlook®, Eptam®, and Matrix® (pdf)

Chickpeas

• Herbicide Application Timings for the Control of Broadleaf Weeds in Chickpeas (pdf)
• Update on Weed Control with Pyridate and Clethodim in Chickpea (Cook Agronomy Farm) (pdf)
• Update on Crop Tolerance with Pyridate and Clethodim in Chickpea (Central Ferry) (pdf)
• Update on Weed Control and Crop Tolerance to Paraquat Applied At-cracking to Chickpeas (Cook Agronomy Farm) (pdf)
• Update on Tolerance on Chickpea Paraquat Applied At-cracking (Central Ferry) (pdf)

Canola

• Spring Canola Seeding Rates (pdf)

View the entire 2017 WSU Weed Control Report (pdf).

Winter Wheat

• Evaluation of Everest® 2.0 for the Control of Rattail Fescue in Direct-Seeded Winter Wheat (pdf)
• Evaluation of Everest® 2.0 and Tank Mix Partners for the Control of Rattail Fescue in Direct-seeded Winter Wheat (pdf)
• Evaluation of Crop Safety with Tank Mixtures of Beyond® Plus Talinor™ Herbicides on WB1376 CL+ Winter Wheat (pdf)
• Mayweed Chamomile Control in Winter Wheat with Talinor™ (pdf)
• Catchweed Bedstraw Control in Winter Wheat with Sentrallas™ and Travallas™ (pdf)
• Catchweed bedstraw Control in Winter Wheat with GF-3122 (pdf)
• Rush Skeletonweed Control in Winter Wheat Following CRP Takeout (pdf)

Spring Wheat

• Control of Russian-thistle with Spartan® Charge in Spring Wheat (pdf)
• Supremacy® Tank Mixes for the Control of Mayweed Chamomile in Spring Wheat (pdf)
• Evaluation of Arysta Experimental Formulations for the Control of Common Lambsquarters and Mayweed Chamomile in Spring Wheat (pdf)
• Evaluation of AL-X1581ad for the Control of Wild Oats in Spring Wheat (pdf)
• Volunteer Buckwheat Control in Irrigated Spring Wheat (pdf)
• Evaluation of Palisade 2EC on Spring Wheat (pdf)
• Management of Italian Ryegrass in Spring Wheat with Pre-emergence Herbicides (pdf)

Chemical Fallow

• Comparison of BD1 and Roundup PowerMax® Formulations of Glyphosate for Control of Russian-thistle (pdf)
• Confirmation of Glyphosate Resistant Russian-thistle in Washington State (pdf)
• Smooth Scouringrush Control with Fallow-applied Herbicides in a Winter Wheat/Spring Wheat/Fallow Rotation (pdf)

Grassland Management

• Indaziflam for Downy Brome and Ventenata Management (pdf)

Alfalfa Management

• Linuron (Linex) for Broadleaf Weed Control in Alfalfa (pdf)
• Indazaflam (Alion) Efficacy and Crop Tolerance in Alfalfa (pdf)

Chickpeas

• Herbicide Application Timings in Chickpeas (pdf)
• Effects of Tillage for Herbicide Incorporation on Broadleaf Weed Control in ‘Frontier’ Chickpeas (pdf)
• Weed Control with Pyridate and Clethodim in Chickpea (Cook Agronomy Farm) (pdf)
• Weed Control with Pyridate and Clethodim in Chickpeas (PCFS) (pdf)
• Crop Tolerance with Pyridate and Clethodim in Chickpeas (Central Ferry) (pdf)
• Effect of Carrier Volume on Pyridate Efficacy (pdf)
• Tolerance of Chickpea Varieties to Pyridate (pdf)
• Pyroxasulfone Crop Response and Weed Management in Chickpeas (pdf)
• Tolerance of Chickpea to Paraquat Applied At-Cracking (Cook Agronomy Farm) (pdf)
• Tolerance of Chickpea to Paraquat Applied At-Cracking (Central Ferry) (pdf)

Dry Peas

• Weed Management Systems in Peas (pdf)

View the entire 2016 WSU Weed Control Report (pdf).

Chickpea

• Herbicide Application Timing in Chickpeas (pdf)
• Broadleaf Weed Control in Chickpeas (pdf)
• Lorox® Tankmix Partners for Weed Control in Garbanzo Bean (pdf)

Pasture

• Managing Bulbous Bluegrass in Pasture (pdf)

Spring Wheat

• Evaluating Pre-plant in Combination with Post-emergence Herbicides for the Control of Italian Ryegrass in Spring Wheat (pdf)

Winter Wheat

• Evaluation of Herbicides and Mowing to Control Smooth Scouringrush in Winter Wheat (pdf)
• Italian Ryegrass Control in Winter Wheat Using Anthem® Flex (pdf)
• Evaluation of DuPont’s Group 2 Herbicides and Their Effect on Downy Brome Control in Winter Wheat (pdf)
• Everest® 2.0 and PowerFlex® HL for the Control of Downy Brome (pdf)
• Pre/Post Systems for Mixed Grass Species Control in Winter Wheat (pdf)
• Two-Gene Clearfield® Winter Wheat and its Tolerance to Beyond® in Combination with Various Broadleaf Herbicides (pdf)
• Russian-thistle Control with Sentrallas® and Travallas® in Spring Wheat in Lincoln County (pdf)
• Mayweed Chamomile Control in Winter Wheat with an Experimental Herbicide from Syngenta (pdf)
• Using Zidua® (pyroxasulfone) for Italian Ryegrass Control in Winter Wheat in the Pacific Northwest — A Report on Zidua Crop Safety and Weed Control Efficacy (pdf)

View the entire 2015 WSU Weed Control Report (pdf).

Chickpea

• Broadleaf Weed Control in Chickpeas (pdf)
• Lorox Tankmix Partners for Weed Control in Garbanzo Bean (pdf)
• Herbicide Application Timing in Chickpeas (pdf)

Herbicide Carryover Trials

• Everest 2.0 Carryover in Barley, Pea, Lentil and Garbanzo Bean_A Comparison with PowerFlex and Maverick Carryover (pdf)
• PowerFlex Carryover and Injury to Alfalfa (pdf)

Spring Wheat

• Evaluating a Dry Formulation of Pyroxsulam for Weed Control in Spring Wheat (pdf)
• Cadet Efficacy and Crop Response in Spring Wheat (pdf)
• Wild Oat Control in Spring Wheat with Everest 2.0 (pdf)
• Supremacy Tank Mixes for Broadleaf Weed Control in Spring Wheat (pdf)
• Post-harvest Control of Russian-thistle Following Spring Wheat (pdf)

Winter Wheat

• Downy Brome Control with Valor SX, Fierce and Axiom in Winter Wheat (pdf)
• Downy Brome Control with FarGo in Combination with Pre- and Post- Emergence Herbicides in Clearfield Winter Wheat (pdf)
• Control of Italian Ryegrass in Winter Wheat with Valor SX and V-10206 (Pyroxasulfone) (pdf)
• Clearfield Winter Wheat Tolerance to Tank Mixes of Beyond Plus Sulfonylurea Herbicides (pdf)
• Ventenata and Downy Brome Control in Winter Wheat (pdf)
• Using Zidua for Italian Ryegrass Control in Winter Wheat in the PNW_A Report on Zidua Crop Safety and Weed Control Efficacy (pdf)
• Two Gene Clearfield Winter Wheat Tolerance to Tank Mixes of Beyond Plus Sulfonylurea Herbicides (pdf)
• Two Gene Clearfield Wheat Tolerance to Beyond Tank Mix Partners (pdf)
• Italian Ryegrass Control with Zidua (pdf)
• Italian Ryegrass Control with Valor SX, Fierce and Axiom in Winter Wheat (pdf)
• Italian Ryegrass Control in Winter Wheat using Anthem Flex Herbicide (pdf)

Barley

• Mayweed Chamomile Control in Spring Barley with Starane Flex Herbicide (pdf)

Spring Wheat

• Evaluating Sierra + Tank Mix Partners for Grass and Broadleaf Weed Control in Spring Wheat (pdf)
• Italian Ryegrass Control in Spring Wheat with Everest 2.0 Applied at Various Times (pdf)
• Post-Harvest Control of Russian-thistle Following Spring Wheat (pdf)
• Russian-Thistle Control with Spartan Herbicide in Spring Wheat (pdf)
• Weed Control in Spring Wheat with Cadet Herbicide (pdf)

Winter Wheat

• Downy Brome Control with Axiom and/or Olympus (pdf)
• Italian Ryegrass Control in Winter Wheat with Anthem Herbicide (pdf)
• Mayweed Chamomile Control in Winter Wheat with Widematch (pdf)
• PowerFlex Carryover and Injury to Alfalfa (pdf)
• Rattail Fescue Control in Winter Wheat with Anthem Herbicide (pdf)
• Rattail Fescue Control with Zidua and Everest 2.0 Herbicides (pdf)
• Two-Gene Clearfield Wheat Tolerance to Beyond + SU Herbicides (pdf)
• Ventenata and Bulbous Bluegrass Control in Winter Wheat Following CRP Takeout (pdf)
• Weed Control in Winter Wheat with Huskie plus various Tankmix Partners (pdf)
• Winter Wheat Tolerance to Everest 2.0 (pdf)