- fold to pyrethroids in field populations of helicoverpa collected from all parts of the country. pyrethroid resistance is wide spread in india, at high levels in maharashtra, punjab, ap and tamilnadu resistance levels during the entire season are usually high with minor exceptions during early cotton...
farmer since , and owns acres. he did try out hybrid cottonseeds and grew them with fertilisers and other chemicals – soon he found the yields were falling and he decided to grow desi (indigenous) cotton which was more suited to the area. today he grows desi varieties like ak and ak , and some american...