The economic threshold (ET) is one of the major decision-making frameworks for rationalizing herbicides use for better weed management while reducing environmental impacts. The ET is the density of …

Nov 15, 2025 · Iowa State University Extension defines the economic threshold as the weed density where the cost of control equals the value of crop yield saved. Successful implementation requires …

They are economic damage, economic injury level, and economic threshold. Collectively, these elements form the EIL concept. Economic damage is the most elementary of the EIL elements, being …

Jun 12, 2025 · Threshold concepts are critical in weed science as they help farmers and agronomists determine when weed control measures are necessary. The concept of thresholds is based on the …

An economic threshold is the weed population at which the cost of control is equal to the crop value increase from control of the weeds present.

The threshold concept has received con-siderable attention in relation to the management of well-established weeds and other pests in agricultural systems, but its applicability to the management of …

An economic threshold (ET) is defined as: ‘the pest population likely to cause damage equal in value to the cost of control (pesticide plus application).’ Such a population is known as the ‘critical’ or ‘break …