Fall, specifically October and early November, is a key time to chemically control thistles in pastures, both biennial and perennial thistles. Proper identification of thistles is key to picking the proper chemical control.
Growers that switched to planting green, say it was much easier to plant compared with planting into the decomposing-dying cover. In spite of these observations, planting green is not for everyone and one needs to assess the risk of doing so.
Weed control in organic soybean usually includes frequent pre-plant tillage operations but spring rains often make it difficult to get into the fields for timely tillage. As a result, weed pressure can be high. Cover crops can help suppress weeds, but after corn harvest it is often too late to establish cover crops. Spring-planting cover crops may be an alternative to fall-planting.
Managing weed escapes mid-season and late-emerging weeds can have a substantial impact on the spread of herbicide-resistant weed populations the following year. View the table of preemergence herbicides that can be applied postemergence.