Vol. 1 (5) : September-October 2010 issue
Green Farming Vol. 1 (5) : 463-466 (September-October, 2010) (New Series)
Response of niger (rabi) to irrigation and integrated nutrient management and its residual effect on summer greengram crop
N.D. DESAI1*, P.M. PATEL2, D.R. PRAJAPATI3, S.L. PAWAR4 and R.G. PATIL5
Soil and Water Management Research Unit, Navsari Agricultural University, Navsari - 396 450 (Gujarat)
Designation : 1Associate Research Scientist, 2Research Associate, 3&4Assistant Res. Scientists, 5Res. Scientist
Subject : Soil Science & Agric. Chemistry; Soil Health & Soil Conservation Engg.
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Citation :
N.D. DESAI, P.M. PATEL, D.R. PRAJAPATI, S.L. PAWAR and R.G. PATIL. 2010. Response of niger (rabi) to irrigation and integrated nutrient management and its residual effect on summer greengram crop. Green Farming Vol. 1 (5) : 463-466 ; September-October, 2010 (New Series)
ABSTRACT
Niger (Guizotia abyssinica L.) is an important oilseed crop grown on marginal land with poor nutrient management exclusively in tribal and hilly areas of South Gujarat during kharif season with a very poor productivity of around 250 kg/ha. There are reports that the yield of succeeding crop was found to increase due to availability of P in soil. Keeping this in view, a field experiment was conducted at Soil and Water Management Research Farm, NAU, Navsari during rabi season of 2005-06 and 2006-07 on irrigation and integrated nutrient management (INM) in niger (RCR-317) and its residual effect on succeeding summer greengram (K-851).
The treatment comprising of 16 combinations of two irrigation levels (R1: 0.4 and R2: 0.6 IW/CPE ratio 60mm depth at each irrigation) and eight INM treatments viz., 50 and 100 per cent RDF (F1 and F2), FYM @ 5 and 10 t/ha (F3 and F4), 50 per cent RDF with FYM @ 5 and 10 t/ha (F5 and F6), 100 per cent RDF with FYM @ 5 and 10 t/ha (F7 and F8), were tried in FRBD with three replications. The soil of the experimental site was clay in texture, low in available N, medium in available P and high in available K with high moisture retention capacity.
Two year pooled results revealed that for getting higher seed yield (640 kg/ha) and net profit (Rs. 5211/ha), niger crop requires four irrigations scheduled at 0.6 IW/CPE ratio. The schedule of irrigation is, first just after sowing, second at 18-20 days after sowing and remaining two at an interval of 24-25 days. The crop should be fertilized with either RDF alone (40-20-0 NPK) or FYM @ 5 t/ha + 50 per cent RDF (20-10-0 NPK kg/ha) for obtaining higher seed yield (645 kg/ha) and net profit (Rs. 6344/ha). Green gram crop should be sown without fertilizer application to get the benefit of residual fertilizer and FYM applied to niger crop so as to get higher net realization and BCR. The higher net realization (Rs. 45094/ha) was recorded in treatment F2 (100% RDF) followed by F5 (Rs. 43864/ha). Application of 50 per cent RDF+ 5 t/ha FYM to first crop of niger has also found to improve soil fertility.
Key words :
Guizotia abyssinicat, INM, Irrigation, Niger, Tesidual effect, Greengram.
