Author(s):

Sanjay Koushal, AK Sharma, Anil Kumar, BC Sharma, Jai Kumar and Lobzang Stanzen

Abstract: An experiment entitled “Studies on direct and residual effects of organic and inorganic sources of nutrients in rice-wheat cropping system” was conducted at research farm, FOA, Main Campus Chatha of SKUAST-Jammu during kharif season of 2006-07 and 2007-08. The soil of experiment site was sandy loam in texture with slightly alkaline in reaction (pH-8.1), medium in organic carbon (0.55 percent), low in available nitrogen and medium in available phosphorus and potassium. The field trial of Rice variety PC-19 was laid out in RBD. The treatments consisted of control, 100 percent N through vermicompost and farmyard manure and inorganic fertilizer (NPK) and in combination with 25 -50 percent N through vermicompost and farmyard manure.). Application of 100 inorganic fertilizer (NPK) brought about significant improvement in yield attributes and yield of rice (number of panicles m^-2, length of panicles, grain weight panicle^-1, number of grains panicle^-1 and 1000-grain weight over the application of organic sources of nutrients and their combination with inorganic fertilizer during 1^st year. Application of organic sources of N through vermicompost in the ratio of 75:25 (T8) increased the grain and straw yield significantly as against the rest of the organic sources and their combinations. Where as during 2^nd year combination of vermicompost and inorganic fertilizer (75: 25) found to produce significant influence on yield attributes, yield of rice.

Pages: 110-112  |  1722 Views  332 Downloads

Download (428KB)