While weeds are responsible for considerable costs to agriculture and the environment, it is often difficult to properly assess these costs. However, the cost of weeds directly influences weed control decision … The importance of weed impact studies lies in their provision of a basis for ranking and prioritizing weeds, rather than in informing decisions on the most appropriate time(s) or weed levels for …

Weed thresholds are an integral component of an integrated weed management system (iwm). In this paper we review the 10literature on weed thresholds and examine the theory and applicability of … 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 …