Vol. 2 (2) : March-April 2011 issue
Green Farming Vol. 2 (2) : 135-137 (March-April, 2011) (New Series)
Nutrient requirement of Bt. cotton by conjoint use of organic and inorganic fertilizers based on targeted yield approach
S.V. DESHMUKHa1, U.S. KUDTARKAR2b*, K.B. PATILa3 and J.R. KADAMa4
aMahatma Phule Krishi Vidyapeeth, Rahuri - 413 722 (M.S.) bRegional Sugarcane & Jaggery Research Station, Opp. Chh. Shahu Market Yard, Kolhapur - 416 005 (M.S.)
Designation : 1P.G. Scholar, 2,3Jr. Res. Asstt., 4Professor (Soil Sci.) *Correspondence
Subject : Agronomy and Crop Production
Paper No. :
Total Pages : 3
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Revised accepted :
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Citation :
S.V. DESHMUKH, U.S. KUDTARKAR, K.B. PATIL and J.R. KADAM. 2011. Nutrient requirement of Bt. cotton by conjoint use of organic and inorganic fertilizers based on targeted yield approach. Green Farming Vol. 2 (2) : 135-137 (March-April, 2011) (New Series)
ABSTRACT
Nutrient requirement of Bt. cotton by conjoint use of organic and inorganic fertilizers based on targeted yield approach on vertisols was conducted with Bt. cotton (NCS-207, Mallica) of Rahuri during 2007-08. Fertilizer adjustment equations under (STCRC) system were formulated for Bt. cotton following Ramamoorthy's inductive-cum-targeted yield model. The nutrient requirement for production of one quintal of Bt. cotton was found to be 5.84, 2.02 and 3.51 kg of N, P2O5 and K2O, respectively. The per cent contribution soil and fertilizer nutrients were found to be 45.87 and 37.79 for N, 83.63 and 31.90 for P2O5 and 17.68 and 27.99 for K2O, respectively. Likewise, the per cent contribution from farmyard manure (FYM) was 40.17, 37.38 and 31.47 kg ha-1 of N, P2O5 and K2O, respectively. The quantity of FYM that could be adjusted to the levels of farmyard manure was evaluated to be 0, 10 and 20 t ha-1, respectively for fertilizer with FYM.
Key words :
Bt. cotton, fertilizer adjustment equations, STCRC, vertisols.
