Cotton<\/h2>\n\n<\/p>\nMajor Pests:<\/strong> Jassid<\/a><\/span><\/u>, Aphid<\/span><\/u>, White Fly, Thrips, Heliothis<\/span><\/u>, Spodoptera![\"cotton\"](\"https:\/\/cropinfo.in\/agriinfo\/infobase\/uploads\/2016\/02\/cotton.png\")
<\/p>\nMajor Diseases:<\/strong> Alterneria leaf spot, Bacterial Blight, Wilt<\/p>\n Major Weeds:<\/strong> Echinochloa, Chenopodium, Cyprus<\/p>\n\n<\/div>
Introduction<\/h2>\n\n<\/p>\nIntroduction:<\/strong> Cotton (Gossypium sp.) is one of the most important commercial crops playing a key role in economics. In India cotton is cultivated in 9 million hectares in varied agro-climatic conditions across nine major States. Cotton cultivation offers 200 mandays\/ha of employment. It employs directly and indirectly more than 60 million persons in its production, processing and marketing. India has the largest area under cotton, but its production is just 15.8 million bales, much lower for the vast area.<\/p>\n\n<\/div>
Sowing<\/h2>\n\n<\/p>\nSowing:<\/strong> Before sowing soil should be irrigated and after wapsa condition sowing should be done. Small shallow holes should be prepared on middle of the ridge upto 2-3 inch deep and applied recommended fertilizers and 1.0-1.5 gram of thimet and cover it with the soil. On each hill 3-4 cotton seeds should be dibble and cover completely with the soil and apply irrigation immediately. In North and Central India irrigated crop is sown from March-May and rainfed crop in June-July with the commencement of the monsoon. In South India the major portion of the irrigated and rainfed crop is planted in September-October, whereas the sowing of the rainfed crops extended upto November. In Karnataka desi cotton is usually sown in August-September.<\/p>\n\n<\/div>
Fertilizer<\/h2>\n\n<\/p>\nFertilizer:<\/strong> The fertilizer required for irrigated cotton is 100:50:50kg nitrogen, phosphorus and potash per hectare is recommended. The application of nitrogen is given by ring method. 20% nitrogen and whole phosphorus and potash should be given at the time of sowing and 40% nitrogen at the time of square formation and final 40% nitrogen at the time of flowering. In case of rainfed cotton fertilizer dose for desi variety is 50:50:25kg nitrogen, phosphorus and potash per hectare. For hybrid varieties fertilizer dose is 80:40:40 nitrogen, phosphorus and potash per hectare. 1\/4 nitrogen and whole phosphorus and potash is given at the time of sowing while 1\/2 nitrogen is given 4 weeks after sowing and remaining 1\/4 nitrogen is given through spraying.<\/p>\n\n<\/div>
Irrigation<\/h2>\n\n<\/p>\nIrrigation:<\/strong> In case of cotton germination, square initiation, flowering and boll formation and boll development are the critical stages for irrigation. The irrigated cotton crop is mostly sown after a preliminary irrigation and second the light watering is given in three or four days after germination. Subsequent watering depend upon the nature of the soil and the weather conditions. Flowering and boll formation are the critical stages from the point of view of irrigation. The summer sown crop gets frequent irrigations at intervals of 8-12 days. From sowing to square initiation period over irrigation should be avoided to stop the excessive vegetative growth. Skip row method should be followed if there is less availability of water. For first interval of irrigation water should be applied in first, third, fifth row and second interval water should be applied in second, forth and sixth row.<\/p>\n\n<\/div>Crop Protection<\/h2>\n\n\nCrop Protection:<\/strong><\/span><\/p>\nJassid and aphids: <\/strong>Nymphs and adults found on the underside of the leaves, sucking the sap; leaves turn yellow and start curling; in severe cases the leaves turn chocolate red and crumple; in such cases, the growth of plant is also stunted.<\/p>\nAmerican Bollworm: <\/strong>Destructive pest, caterpillar borer into square flowers and boll and feed within the boll. While feeding head of caterpillar is inside the square or boll and remaining portion is outside the square and boll.<\/p>\n![\"Cotton](\"https:\/\/cropinfo.in\/agriinfo\/infobase\/uploads\/2017\/11\/cotton_insect_pest-190x250.jpg\")
<\/a>Insect pest of cotton and their symptoms of damages<\/figcaption><\/figure>\n <\/p>\n
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Major Pests:<\/strong> Jassid<\/a><\/span><\/u>, Aphid<\/span><\/u>, White Fly, Thrips, Heliothis<\/span><\/u>, Spodoptera Major Diseases:<\/strong> Alterneria leaf spot, Bacterial Blight, Wilt<\/p>\n Major Weeds:<\/strong> Echinochloa, Chenopodium, Cyprus<\/p>\n \n<\/div> Introduction:<\/strong> Cotton (Gossypium sp.) is one of the most important commercial crops playing a key role in economics. In India cotton is cultivated in 9 million hectares in varied agro-climatic conditions across nine major States. Cotton cultivation offers 200 mandays\/ha of employment. It employs directly and indirectly more than 60 million persons in its production, processing and marketing. India has the largest area under cotton, but its production is just 15.8 million bales, much lower for the vast area.<\/p>\n \n<\/div> Sowing:<\/strong> Before sowing soil should be irrigated and after wapsa condition sowing should be done. Small shallow holes should be prepared on middle of the ridge upto 2-3 inch deep and applied recommended fertilizers and 1.0-1.5 gram of thimet and cover it with the soil. On each hill 3-4 cotton seeds should be dibble and cover completely with the soil and apply irrigation immediately. In North and Central India irrigated crop is sown from March-May and rainfed crop in June-July with the commencement of the monsoon. In South India the major portion of the irrigated and rainfed crop is planted in September-October, whereas the sowing of the rainfed crops extended upto November. In Karnataka desi cotton is usually sown in August-September.<\/p>\n \n<\/div> Fertilizer:<\/strong> The fertilizer required for irrigated cotton is 100:50:50kg nitrogen, phosphorus and potash per hectare is recommended. The application of nitrogen is given by ring method. 20% nitrogen and whole phosphorus and potash should be given at the time of sowing and 40% nitrogen at the time of square formation and final 40% nitrogen at the time of flowering. In case of rainfed cotton fertilizer dose for desi variety is 50:50:25kg nitrogen, phosphorus and potash per hectare. For hybrid varieties fertilizer dose is 80:40:40 nitrogen, phosphorus and potash per hectare. 1\/4 nitrogen and whole phosphorus and potash is given at the time of sowing while 1\/2 nitrogen is given 4 weeks after sowing and remaining 1\/4 nitrogen is given through spraying.<\/p>\n \n<\/div> Irrigation:<\/strong> In case of cotton germination, square initiation, flowering and boll formation and boll development are the critical stages for irrigation. The irrigated cotton crop is mostly sown after a preliminary irrigation and second the light watering is given in three or four days after germination. Subsequent watering depend upon the nature of the soil and the weather conditions. Flowering and boll formation are the critical stages from the point of view of irrigation. The summer sown crop gets frequent irrigations at intervals of 8-12 days. From sowing to square initiation period over irrigation should be avoided to stop the excessive vegetative growth. Skip row method should be followed if there is less availability of water. For first interval of irrigation water should be applied in first, third, fifth row and second interval water should be applied in second, forth and sixth row.<\/p>\n\n<\/div> Crop Protection:<\/strong><\/span><\/p>\n Jassid and aphids: <\/strong>Nymphs and adults found on the underside of the leaves, sucking the sap; leaves turn yellow and start curling; in severe cases the leaves turn chocolate red and crumple; in such cases, the growth of plant is also stunted.<\/p>\n American Bollworm: <\/strong>Destructive pest, caterpillar borer into square flowers and boll and feed within the boll. While feeding head of caterpillar is inside the square or boll and remaining portion is outside the square and boll.<\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/div><\/div><\/p>\n<\/p>\nIntroduction<\/h2>\n
Sowing<\/h2>\n
Fertilizer<\/h2>\n
Irrigation<\/h2>\n
Crop Protection<\/h2>\n
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