Is it better, to over use of pesticides and New variety seeds in the name of High yielding in agriculture or not
Answers
trying varieties of seeds can be useful so that we can also make hybrid varieties with it
NO
The impact of pesticides consists of the effects of pesticides on non-target species. ... Over 98% of sprayed insecticides and 95% of herbicides reach a destination other than their target species, because they are sprayed or spread across entire agricultural fields.
a) Soil Erosion
Excessive water-supply and wind removes the top fertile layer of the farm. Loss of nutrient rich soil not only reduces productivity, but also results in silting of water bodies and streams and induces release of soil carbon from particulate organic material, which contributes to global warming.
b) Ground water contamination
Leaching of nitrates (NPK fertilizers) may cause ground-water pollution. E.g. haemoglobin combines with nitrite to from methaemoglobin which is unable to carry the oxygen so reduces oxygen uptake in the lungs.