The critical period of weed control (point a to point b) is the timeframe within a crop growth cycle, during which weeds need to be controlled in order to maintain crop yields. One of the keys to successful implementation of this new system of weed control lies in the ability of growers to determine when weed populations exceed economic threshold levels, thus requiring treatment. Threshold concepts are critical in weed science as they help farmers and agronomists determine when weed control measures are necessary
The concept of thresholds is based on the idea that there is a certain level of weed infestation beyond which crop yields are significantly impacted. Chemical, cultural, mechanical, and biological. Adopting economic threshold weed control farming practices typically reduces herbicide costs while maintaining profitability
For soybeans, the first four weeks through canopy closure is crucial Determine appropriate control methods and timing Proper weed control requires a combination of one or more of the following control methods
