Impact of integrated nutrient management on nutrient uptake and yield in low land rice

The effect of nutrient management technologies on yield and nutrient uptake under lowland rice ecosystem was evaluated in a field experiment conducted in clay loam soil of wetlands at Coimbatore in Tamilnadu. The crop was supplied with different levels of recommended dose of fertilizers alone or integrated with Sesbania aculeata, Azolla and Blue green algae. The integrated use of 150: 50: 50 kg N, P₂O₅, K₂O + 25 kg ZnSO₄ ha⁻¹ through inorganic sources + Sesbania aculeata @ 6.25 t ha⁻¹ + Azolla @ 500 kg ha⁻¹ recorded the highest grain and straw yield of wet land rice and the highest uptake of N, P and K by grain and straw.