Effect of organic manure and LCC-based top dressing on growth, yield, quality and economics of aromatic rice in Gangetic alluvial soil
DOI:
https://doi.org/10.59797/ija.v70i4.6013Keywords:
Aromatic rice, Economics, Growth, Leaf colour chart, Organic manure, Quality, YieldAbstract
A field experiment was conducted at Bidhan Chandra Krishi Viswavidyalaya, Jaguli, Nadia, West Bengal during rainy (kharif) season of 2023 to find out the effect of three organic manures (cowdung manure, vermicompost and poultry manure) @ 20 kg N/ha as basal in main plots, and four LCC-based N top dressing (no top dressing, neem-coated urea @ 15 kg N/ha, nano urea @ 4 ml/litre and mustard cake @ 15 kg N/ha) in sub-plots. Basal application of vermicompost @ 20 kg N/ha to aromatic ‘Gobindabhog’ rice resulted in tallest plant at maturity (143.7 cm), maximum dry matter accumulation (492.2 g/m2) at 84 DAT and maximum grain yield (2.67 t/ha), but it led to least net income (₹ 48549/ha) due to higher cost of cultivation. However, basal application of poultry manure @ 20 kg N/ha resulted in moderate grain yield (2.54 t/ha), better lodging resistance (score 2.0), higher protein content (7.39%) and much-better net income (₹ 57,778/ha). Among LCC-based (score <3) top dressing, mustard cake @ 15 kg N/ha twice recorded better growth attributes, chlorophyll content in leaf (2.52 mg/g) at 84 DAT and maximum grain yield (2.79 t/ha); while the crop nourished with neem-coated urea recorded moderate yield (2.61 t/ha), better lodging resistance (score 2.0), highest protein content (7.47%) and maximum net income (₹ 58,434/ha) in the study.
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