Effect of irrigation intervals and hybrids on growth, yield and economics of dry (boro) rice (Oryza sativa) in New Alluvial Zone of West Bengal

BISHAL MUKHERJEE; MRITYUNJAY GHOSH; S. BANERJEE; S.K. DE; S. ADHIKARY

doi:10.59797/ija.v65i4.2997

Authors

BISHAL MUKHERJEE
MRITYUNJAY GHOSH
S. BANERJEE
S.K. DE
S. ADHIKARY

DOI:

https://doi.org/10.59797/ija.v65i4.2997

Keywords:

Economics, Growth, Hybrid rice, Irrigation interval, Yield

Abstract

A field experiment was conducted at Jaguli, Nadia, West Bengal, India, during dry (boro) season of 2017, to access the performance of 4 rice (Oryza sativa L.) hybrids (6129 Gold, 6444 Gold, Tej Gold and DRH 775) under 3 irrigation intervals (1, 3 and 5-day interval) for better yield and profitable production. Irrigation intervals had significant influence on growth attributes, viz., tiller production, leaf area index and dry-matter accumulation at 63 days after transplanting (DAT), crop growth rate at 4263 DAT, and yield components, viz., panicles/m2, filled grains/panicle and test weight, of hybrids at maturity. Rice hybrids grown with irrigation at 1-day interval resulted in the highest grain yield (5.92 t/ha), which was slightly greater (2.07%) over 3-day interval and much higher (18.64%) over 5-day interval. Among the rice hybrids, 6129 Gold gave the highest grain yield and net income

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Table 2. Effect of irrigation intervals and hybrids on yield attributes, productivity, water utilization and economics of rice during boroseason

Treatment Panicles/ Filled 1,000-Grain Total Field Cost of Net Benefit: m2 grains/ grain yield water water-use cultivation income cost panicle weight (t/ha) utilized efficiency (103`/ha) (103`/ha) ratio

(g) (cm) (kg/ha-mm)

Irrigation interval

Irrigation at 1-day interval 393.4 158.1 23.1 5.92 192.4 3.08 52.5 29.9 1.56

Irrigation at 3-day interval 374.1 150.4 22.9 5.80 115.4 5.02 47.4 33.5 1.70

Irrigation at 5-day interval 360.9 149.0 22.4 4.99 89.2 5.59 45.6 24.6 1.54

SEm 3.96 1.54 0.14 0.03

CD (P=0.05) 15.97 6.21 0.55 0.11

Gold 386.8 154.2 23.2 5.88 132.4 4.44 48.5 33.7 1.69

Gold 379.2 147.0 22.6 5.37 132.4 4.05 48.5 27.0 1.55

Tej Gold 376.5 159.2 23.1 5.57 132.4 4.21 48.5 29.1 1.59

DRH 775 361.9 149.7 22.3 5.46 132.4 4.13 48.5 27.5 1.57

SEm 4.91 1.91 0.17 0.04