International Journal of Agriculture Extension and Social Development

author(s)
Gaurav Verma, SP Singh and Ram Bharose

abstract
A field experiment was conducted Crop Research Centre of S.V. P. University of Agriculture and Technology, Meerut (U.P.). to study the Effect of phosphorus management on Nutrient uptake of plant and nutrient content in soil on Rice (Oryza sativa L.) during kharif season of 2022. The soil of the experimental field was well drained sandy loam in texture. The completely Randomized Block Design (CRBD) with three replications. The rice variety Pusa basmati 1121. Results obtained from the study revealed that yield attributes characters and grain yield in rice were significantly superior with the application of N₁₀₀P₃₀K₄₀ + Root dipping with 2% DAP + Foliar application of 2% Nano DAP at MT & PI stage as compared to rest of the treatments. Incurred highest of Rs 116584 and 60588 ha^-1 gross and net returns treatment (T₁₀), respectively. Results obtained from the study revealed that nutrient uptake in rice were significantly superior with the T₁₀ as compared to rest of the treatments. The rice also nutrient uptake significantly maximum total N, P and K (100.5, 29.9 and 118.7 kg ha^-1), respectively as compared to T₃ (N₁₀₀P₀K₄₀) and T₂ (N₁₀₀P₆₀K₄₀. Besides, PFP (150.33 kg grains/kg P), AE (65.33 kg grains increase/kg P) and ARE (55.66%) are maximum under N₁₀₀P₃₀K₄₀ + Root dipping with 2% DAP + Foliar application of 2% Nano DAP at MT & PI stage and significantly superior to rest of the treatments. Soil residual fertility exhibited significant variation under different nutrient management practices attributed to differential crop removals and additions. Increased the available nutrient nitrogen, phosphorus, potassium and zinc, respectively after harvest of rice crop. Available soil nutrients (N, P, K and Zn) were significantly lower in unfertilized plots as against highest in plots receiving N₁₀₀P₃₀K₄₀ + Root dipping with 2% DAP + Foliar application of 2% Nano DAP at MT & PI stage.