in detail explain how does the weedicides not affect the main crop
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Answer:
Weeds are unwanted plants growing among wanted crops and compete with crop plants for sunlight, nutrients, water etc. They grow in the fields where they compete with crops for water, soil nutrients, light and space and thus reduce crop yields. ... They will not show any effect on crop plants
Weedicides, which are also known as herbicides, are chemicals which are harmful to plants. Herbicides can be selective (only kill certain types of plants) or non-selective (kill all types of plants).
Selective herbicides have different mechanisms of action. Different plants will have varying degrees of susceptibility to different mechanisms of action due to differences in absorption of the chemical and the physiology or morphology of the plant. Thus, care is taken to select the appropriate weedicides.Weedicides, which are also known as herbicides, are chemicals which are harmful to plants. Herbicides can be selective (only kill certain types of plants) or non-selective (kill all types of plants).