The increase in size and density of populations of invasive species with the progressive invasion of natural ecosys-tems means that weed control effort and cost will increase with delays in applying …
Level of threshold weed density does not affect the long-term …
May 1, 1997 · It is shown that long-term application of thresholds results in a control frequency that is independent of threshold level, and in aperiodic dynamics of the weed population which may cause …
Mastering Threshold Concepts in Weed Science
Jun 12, 2025 · Threshold concepts in weed science refer to the critical levels of weed infestation or density that trigger the need for control measures.
Weed Thresholds: The Space Component and Considerations for …
Simulations suggest optimum weed population levels (thresholds) for maintaining genotypes that are susceptible to control practices and which minimize crop yield reductions.
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 …
5.7 Critical Period of Weed Control – Principles of Weed Control
These thresholds come into play when a farmer is determining whether or not to apply additional weed control measures (and thereby, extra expenses) – weighing the benefits and the disadvantages.
Determining ETs or action thresholds of weeds involves methods that can measure and predict the level of weed infestation.