Effect of nutrient management in maize under different tillage practices
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Date
2018
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Dr. Rajendra Prasad Central Agricultural University, Pusa (Samastipur)
Abstract
An experiment on “Effect of nutrient management in maize under different tillage practices” was conducted at TCA, Dholi, Farm, Muzaffarpur during Kharif 2016-17 with maize variety (Shaktiman-5) in a Split Plot Design. Main plot consist of three different tillage practices viz., a) Zero tillage (ZT), b) Conventional tillage (CT) and c) Bed planting (BP) and sub plot comprised three different level of nutrient management viz., a) Recommended dose of fertilizer (RDF) (120, 60 and 50 kg/ha N, P2O5 and K2O), b) Site Specific Nutrient Management (SSNM) based on nutrient expert and c) Farmers practice (FP) (150% of RDF + 10 ton FYM). The treatments were replicated thrice in split plot design. Observation on various growth parameter, yield attributes and yield of maize.
Growth attributes i.e., plant height, leaf area, days to 50% tasseling, days to 50% silking, plant population at maturity and dry matter accumulation were significantly higher under bed planting tillage practices over zero tillage and conventional tillage practices. Among the different nutrient management practices, farmer practices was reported significantly higher growth attributes than recommended dose of fertilizer but statistically at par with site specific nutrient management practices.
Highest yield attributes and yield viz., cobs/plant, length of cobs, grains/cob, girth of cobs, test weight and grain yield were observed under bed
planting tillage practices which was significantly superior over remaining tillage practices while highest yield attributes and yield were obtained under farmer practices which was significantly superior over recommended dose of fertilizer but statistically at par with site specific nutrient management practices.
Among the different tillage practice and nutrient management practices, maximum gross return (106396 `/ha) and net return (64111 `/ha) were obtained under the bed planting which was significantly higher than rest of tillage practices whereas maximum net returns (63523 `/ha) and B:C ratio (1.89) were observed under SSNM which was significantly superior over other nutrient management practices.
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