Weed control thresholds are often presented as a means to reduce unnecessary control measures, thereby increasing the effectiveness of weed management Critical period of weed control is a threshold commonly used, which is relative to time from planting date Researchers have identified at what point during the growing season weeds can inflict the most damage on a crop’s potential yield. Adopting economic threshold weed control farming practices typically reduces herbicide costs while maintaining profitability There are some theoretical concerns with applying a static approach such as the economic threshold to weed management decision making An improvement is to adopt a population management approach where the intertemporal effects of decisions are taken into account.
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