Abstract
Soil Test Crop Response field experiment was conducted at Tamil Nadu Agricul- tural University Farm, Coimbatore on Typic Ustivertops with cotton MCU 9 as test crop. The influences of inorganic nutrients as fertilizers and organic nutrients as farm yard manure on yield and quality parameters were studied for seed cotton. Four levels of N (0, 60, 120, 180 kg/ha). 3 levels of P, 0, and K,0 (0, 17, 34 kg/ha) and 3 levels of FYM (0. 6. 12 t/ha) were tried. The results indicated that N fertilization and FYM incorporation significantly in-1 fluenced the yield. P and K additions were not so impressive. Potash application" exerted a positive trend on the quality parameters except firmness of fibre, FYM incorporation prominently influenced the ginning percentage. The post-harvest soil- analysis revealed that there was a build up of the organic corbon status. The alk. KMn0,-N status was also considerably enhanced at higher levels of FYM incorpo- ration while NH, OAC-K Was reduced prominently, however the soil contained sufficient available K.
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