Journal of Pure and Applied MicrobiologyVol. 9 No. 3

Does Various Crop Establishment Methods and Zn Sources Change Dynamics of Nutrient Uptake and Economics of Rice (Oryza sativa L.)

V.K. Verma1*, R.N. Meena1, Gaurav1, R.K. Singh1 and I. Bahadur2

1Department of Agronomy, Institute of Agricultural Sciences, B.H.U., Varanasi, Uttar Pradesh 221005 (U.P.) India. 2Department of Soil Science and Agricultural Chemistry, Institute of Agricultural Sciences, B.H.U., Varanasi, Uttar Pradesh 221005 (U.P.) India.

Received on 01 May 2015 and accepted on 06 July 2015

 

ABSTRACT

A field experiment was conducted during the rainy (Kharif) season in 2013 at Agricultural Research Farm, Institute of Agricultural Sciences, Varanasi, to evaluate the various crop establishment methods and different sources of Zn on dynamics of nutrient uptake and economics of rice (Oryza sativa L.). The result of the experiment indicate that, the treatment combinations M1Z1 (SRI+ Zn-EDTA-12% Zn) was found to be the best with respect to yield, nutrient uptake and economics of rice. The highest grain yield (51.95 q ha-1), straw yield (60.96 q ha-1), N uptake in grain (46.55 kg ha-1) and straw (26.58 kg ha-1), P uptake in grain (13.25 kg ha-1) and straw (9.45 kg ha-1) and Zn uptake in grain (183.42 g ha-1) and straw (756.62 g ha-1) was found higher with SRI method of transplanting as compare to other methods of crop establishment but the highest K uptake in grain (13.75 kg ha-1) and straw (91.40 kg ha-1) was noticed with Farmer’s practice method of transplanting. In case of sub plot treatments, the highest grain yield (54.31 q ha-1), straw yield (61.56 qha-1), N uptake in grain (48.60 kg ha-1) and straw (27.23 kg ha-1), P uptake in grain (13.64 kg ha-1) and straw (9.49 kg ha-1), K uptake in grain (13.71 kg ha-1) and straw (93.21 kg ha-1) and Zn uptake in grain (195.94 g ha-1) and straw (828.71 g ha-1) was examined with Zn-EDTA-(12% Zn) application @ 1.0 kg h-1. Highest gross return (Rs. 92608.03 ha-1), Net return (Rs. 56184.37 ha-1) and B: C ratio (1.54) was observed with M1Z1 (SRI+ Zn-EDTA-12% Zn) and minimum gross return (Rs. 76516.67 ha-1), Net return (Rs. 38362.95 ha-1) and B:C ratio (0.92) was observed with M3Z0 (Farmer’s practice method with control). The performance of Zn sources was Zn-EDTA > ZnSO4.7H2O > ZnSO4.H2O.

Keywords : SRI, Wetland, Economics, Net return, Yields, and Nutrient uptake.