Herbicide tolerant crops: problems and prospects

Abstract

Herbicide tolerant crops in general provided broad-spectrum of weed control, reduced crop injury and phyto-toxicity, less herbicide carryover on the succeeding crops, herbicides like glyphosate and glufosinate are environmentally safe with less persistence and residues, new means for weed resistance management, crop and weed management are flexible and simple, better performance in yield and higher profitability in income of herbicide telerant crops. In many crops, their use will decrease the cost of effective weed management in the short- to medium-term. However, they offer the farmer a powerful new tool that, if used wisely, can be incorporated into an integrated pestmanagement strategy that can be used for many years to more economically and effectively manage weeds. In maize and cotton transgenic crops, post-emergence weed management with glyphosate proved to be the better management option for the control of weeds.