International Journal of Environment and Climate Change

Aim: Nitrogen is very crucial for production of rice and recently the uses of chemical fertilizers are increased for rice production, which are ruining our soils and environment. So, to evaluate the effect of integrated nitrogen management practices on nutrient content and their uptake by transplanted rice crop this study was conducted.

Study Design: Randomized block design.

Place and Duration of Study: One year field experiment at Research farm, School of Agriculture, Abhilashi University, Chail Chowk, Mandi, (H.P.).

Methodology: The field study was conducted with eight treatments and three replications. The different treatments combinations were T₁ (absolute control), T₂ [100% RDN through Chemical Fertilizer (CF)], T₃ (75% RDN through CF + 25% N through FYM), T₄ (75% RDN through CF + 25% N through poultry manure), T₅ (75% RDN through CF + 25% N through vermicompost), T₆ (50% RDN through CF + 50% N through FYM), T₇ (50% RDN through CF + 50% N through poultry manure), T₈ (50% RDN through CF + 50% N through vermicompost).

Results: The study of results revealed that the nitrogen, phosphorus and potassium content in grains and straw of rice crop showed non-significant differences with the application of nitrogen through various treatments, while the maximum contents of these nutrients were higher in treatment T₂. However, the significantly highest uptake of nitrogen, phosphorus and potassium by grains and straw and total uptake of these nutrients by rice was noted in treatment T₂ which was statistically (P = .05) at par with treatment T₄ and T₅. Whereas, the minimum content in grains and straw and uptake of these nutrients by grains and straw along with their total uptake was found under control treatment.

Conclusion: This study suggests that the use of integrated nitrogen management enhances the nitrogen, phosphorus and potassium content and their uptake by rice crop.