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Full Research Article

Effect of Need-based Nitrogen Scheduling on the Growth and Productivity of Pearl Millet (Pennisetum glaucum)

Subhrajyoti Dalal1, Tanmoy Shankar1,*, Sagar Maitra1, Lalichetti Sagar1, Rahul Adhikary2
1Department of Agronomy and Agroforestry, Centurion University of Technology and Management, Paralakhemundi-761 211, Odisha, India.
2Department of Soil Science and Agricultural Chemistry, Centurion University of Technology and Management, Paralakhemundi-761 211, Odisha, India.

ABSTRACT

Background: Under the present context of global warming and climate change, the choice of an ecologically hardy crop is having prime importance. Nutrient management is an important approach for improving crop growth and productivity. Among all the nutrients, nitrogen helps in the overall growth of the plant. Nitrogen helps to synthesize chlorophyll and thereby supports building the protein units that enhance plant growth. As nitrogen is highly mobile, it is lost through different ways such as volatilization, leaching, nitrification, etc. Split application of nitrogen through proper scheduling is an important approach to reduce nitrogen loss as well as to improve nitrogen use efficiency. Hence, the investigation was conducted to find out how the scheduling of nitrogen is affecting pearl millet growth and productivity.

Methods: The present study was conducted in kharif season of 2022 on pearl millet at Post Graduate Experimental Farm, M. S. Swaminathan School of Agriculture. The experiment was carried out in randomized complete block design with 3 replications and 9 treatments, namely, T1: control, T2: 50% basal RDN, T3: 100% basal RDN, T4: 50% basal RDN + 50% at 30 DAS, T5: 50% basal RDN + 25% at 30 DAS and 45 DAS, T6: 50% nitrogen as basal + topdressing @10 kg nitrogen/ha at sufficiency index < 95%, T7: 50% nitrogen as basal + topdressing @10 kg nitrogen/ha at sufficiency index < 90%, T8: 50% nitrogen as basal + topdressing @10 kg nitrogen/ha at sufficiency index < 85%, T9: 50% nitrogen as basal + topdressing @10 kg nitrogen/ha at sufficiency index < 80%.

Result: The results showed that the application of 50% nitrogen as basal + topdressing @10 kg nitrogen/ha at sufficiency index < 95% gave the maximum growth, yield, and income was also significantly higher with this application. So, it could be recommended to the farmers for growing pearl millet during kharif season in southern Odisha to achieve higher growth and productivity.

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