Vol. 12, Issue 10 (2023)

Author(s):
V Sridevi, V Chellamuthu, R Mahendra Kumar and S Pazhanisamy

Abstract:
A field experiment was carried out during rabi, 2016-17 at Pandit Jawaharlal Nehru College of Agriculture and Research Institute, Karaikal, Puducherry Union territory to elucidate the performance of sea weed extract as liquid biostimulant on the productivity and profitability of transplanted rice. The experiment was laid out in a randomized complete block design with five treatments and four replications. The treatments tested were T₁: RDF (150:50:50 kg NPK ha^-1), T₂: T₁ + LBS6 @ 1 ml l^-1, T₃: T₁ + LBS6 @ 0.75 ml l^-1, T₄: Location specific (RDF + Foliar spray of 1% Urea + 2% DAP + 1% MOP at panicle initiation stage and 10 days later) and T₅: Absolute control. The results of the experiment revealed that all the nutrient management practices significantly improved the rice productivity over absolute control. Among the nutrient management practices, application of recommended fertilizer dose (150:50:50 kg NPK ha^-1) and foliar spray of LBS6 @ 1 ml l^-1 thrice at the time of pulling out of seedling in the nursery and 30 and 60 days after transplanting in the main field resulted in higher yield attributes, yield, harvest index and economic returns.