Question

Selective herbicides are classified according to their spectrum of weed-control action. What is the defining characteristic of a selective herbicide when it is applied to a crop field?

Q: Answer-Selective herbicides are classified according to their spectrum of weed-control action. What is the...

Selective herbicides are specifically formulated to kill target weed species while causing minimal or no injury to the desired crop plants growing alongside them, exploiting physiological or biochemical differences between the crop and weed species, in contrast to non-selective broad-spectrum herbicides, which are designed to kill essentially all plant species they come into contact with, regardless of species.