Author(s):

Rahul J Patil, SD Jadhao, Pooja Mule, BA Sonune, DV Mali, AB Aage, DP Deshmukh and Dipti Agarkar

Abstract: Field experiments were conducted during rabi season of 2016-17 (29^th cycle) at Akola. The experimental design was randomized block design. There were 12 treatments replicated three times. The treatments comprised of different levels of recommended dose of fertilizers (RDF) viz; 50, 75, 100 and 150% and RDF in combination with farm yard manure (FYM), FYM alone (5 t ha^-1), RDF devoid of S, RDF along with S @ 37.5 kg ha^-1 and Zn @ 2.5 kg ha^-1, NP, N alone and control. The results of the present experiment indicated that, application of 100% NPK+ FYM was found beneficial in improving the status of DTPA-Zn (0.93 mg kg^-1) followed by 100% NPK+ Zn (0.78 mg kg^-1). The DTPA-Fe was slightly increased with the application of 100% NPK+ FYM followed by FYM @ 10 t ha^-1 (8.68 mg kg^-1) and 150% NPK (8.58 mg kg^-1) at harvest of wheat. The application of 100% NPK +FYM @ 5 t ha^-1 (4.18 mg kg^-1) was found beneficial in improving the status of DTPA-Cu. The application of 100% NPK + FYM recorded highest DTPA-Mn (8.99 mg ka^-1) followed by 150% NPK (8.23 mg kg^-1) and FYM @ 10 t ha^-1 (8.22 mg kg^-1). The highest use efficiency of Nitrogen, Phosphorus and Potassium was registered under integrated use of chemical fertilizer and organic manures. The application of 50% NPK also found beneficial in improving N, P, and K use efficiency.

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