Effect of organic manure and LCC-based N top dressing on growth, yield, quality and economics of aromatic rice in Gangetic alluvial soil
DOI:
https://doi.org/10.59797/ija.v70.i4.5674Keywords:
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 3 organic manures (cow dung manure, vermicompost and poultry manure) @ 20 kg N/ha as basal in main plots, and four LCC-based N top dressing (no top dressing, neemcoated 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 (`Rs. 48,549/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 (`Rs.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 (`Rs. 58,434/ha) in the study.
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