Threshold concepts are critical in weed science as they help farmers and agronomists determine when weed control measures are necessary Biocontrol reduces the infestation but does not eradicate the weed. 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.
Critical period of weed control is a threshold commonly used, which is relative to time from planting date Biological control is most suitable for larger infestations of widespread weeds such as patterson’s curse, many cacti and salvinia Researchers have identified at what point during the growing season weeds can inflict the most damage on a crop’s potential yield.
