As an extension of weed threshold models in which crop losses are based on weed density, an altemative model for grass weeds in cereal crops is proposed that incorporates the theoretical รขโ‚ฌยฆ However, because most weed populations generate effects that carry over to following years, an eco-nomically-defined action threshold that deals solely with impact in the current sea-son is not suited to รขโ‚ฌยฆ It can reduce reliance on herbicides and save money, especially in the long term.

Integrated weed management programs require long รขโ‚ฌยฆ Determining ets or action thresholds of weeds involves methods that can measure and predict the level of weed infestation.