![]() Soil persistence or soil residual life is another factor to consider when applying herbicides to crops. ![]() The issue is a very serious one because if a substantial amount of drift-related damage occurs there are legal ramifications. However, timing is critical, as Early Preplant (EPP) Herbicide applications that are too early may require a post-application.Īs well as timing, there is the problem of herbicide drift and drift-related damage to consider. Spring herbicide applications, for example, include Broadworks and Pindar GT, used in stone fruits, and Zeus Prime, which is currently only used for apples.Ĭertain residual herbicides can also be applied close to the time for planting. Timing is crucial when it comes to the successful application of herbicides. Herbicide Application and Timing for Field Crops It is used as part of the harvesting process and is currently being tested in Illinois. Harvest weed seed control using a Harrington Seed Destructor is a way of managing herbicide-resistant weeds. Hairy vetch would typically be terminated with a roller crimper before planting corn. Hairy vetch, for example, mixed with a winter grain, can be used before corn, and cereal rye is predominantly used before soybean. The focus of organic weed management is prevention, crop rotation, crop competition, and cultivation. Organic producers use cover crops, for example, as well as a number of other non-chemical control strategies in their weed management plans that are cultural and mechanical. The application of herbicides is not the only way to manage weeds successfully, especially if producers want to “ plant green”. ![]() Chemical Free Weed Management for Agronomic Crops Soybean producers can attend the Soybean Management Workshop and Herbicide Demonstration workshop to learn more about herbicide usages along with variety selection, management strategies, insect, and disease management. Producers use cover crops as part of their weed management program, but it’s important to remember that some herbicides can persist and potentially influence the establishment of cover crops. Herbicide-resistant weeds are a common cause for concern, too, with Marestail, or horseweed, being one of the most challenging. Glyphosate is another broad-spectrum herbicide and is a herbicide option for burndown in no-till corn. There are many options for fall herbicide applications, such as Harmony Extra, a broad-spectrum herbicide. Some winter annual weeds are easier to manage in the fall rather than waiting until the spring. There is a temptation, when applying herbicides, to wait until all the weeds have emerged, but this is counterproductive. Certain herbicides can be applied in nitrogen carriers, but it’s important to get the timing right. When spring is approaching, for example, populations of winter annual weeds become prevalent, thereby competing with wheat and barley. Weed Management in Agronomic Crops: Corn, Soybean, and WheatĬorn, soybean, and wheat have specific weed management issues to contend with. Mid-season weed control issues also include herbicide drift. The effectiveness of any weed control method depends on a number of different things, such as the time of the year, unstable weather conditions, crop injury, and tank-mixing. The Agronomy Weed and Pest Management Tour is one way you can find out about the new herbicide products.Ĭonservation tillage systems are another way of managing weeds that uses cultural, mechanical, and chemical control tactics. The use of herbicides is just one method, with new herbicide products entering the market every year. Weed management plays an important part in agronomic field diagnostics. Penn State Extension’s Introduction to Weeds and Herbicides covers the important issues surrounding weeds and their control. Not only are there different types of weeds, but there are also many different methods for controlling them. Understanding these life cycles, for example, helps agronomic crop producers decide whether they can control annual and perennial weeds after silage harvest or in fallow areas. Weeds can be broken down into annuals, biennials, and perennials, each of which has its own life cycle. Weed Management Best PracticesĪgronomic crop weed management requires year-round vigilance and control. On this page, find recommendations for managing weeds in agronomic crops such as corn, grain, soybeans, small grains, and forages. ![]() Weeds reduce agronomic crop yields through competition for resources.
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