Published Paper Details:

Field experiment was conducted at Eastern Block Farm, Tamil Nadu Agricultural University, Coimbatore during Kharif 2022 with an objective of influence of drip fertigation and growth regulators in soybean. The treatments composed of 75 % ,100 % and 125 % of RDF through drip fertigation with foliar application of 100 ppm succinic acid and humic acid twice at peak flowering and pod initiation stages. The drip irrigation was scheduled once in five days based on daily pan evaporation as per the treatment schedule and at 0.8 IW/CPE ratio in surface irrigation with 5 cm depth of irrigation and fertigation was scheduled with respect of crop growth stages with the computed quantity of fertilizer as per the treatment. The effect of nutrient application methods drip fertigation and soil application reflected on differential rate of N, P and K uptake by the crop. The nutrient uptake was higher under drip fertigation compared to soil application of nutrients. Among the drip fertigation, the N, P and K uptake was higher at 100 per cent RDF through RDF through drip fertigation with foliar spray of 100 ppm humic acid compared to other treatments. Grain yield was significantly higher under 100 % RDF through drip fertigation with foliar spray of 100 ppm humic acid