Evaluating Precision Nitrogen Management Practices in Terms of Yield, Nitrogen Use Efficiency and Nitrogen Loss Reduction in Maize Crop Under Indian Conditions


Nitrogen (N) losses from the N sources such as manures, fertilizers etc. applied to crops are considered as the largest non-point source of nitrogen-nitrate pollution in surface and groundwater bodies. The extent of water bodies polluted with N is worsening day by day, worldwide, with its severe impact on the quality of drinking water. This necessitates the development of crop specific N management practices to reduce N losses from crop systems. Improvements in agronomic and recovery efficiency of nitrogen in crops are regarded as promising techniques to reduce N losses. With the hypothesis that precise N supply in maize employing LCC or CCM under a critical threshold value will augment the yield performances and Nitrogen Use Efficiency (AEN and REN) of maize, while reducing N losses, a two year study was conducted at Anand, India. Fifty percent reduction in basal N application and subsequent N applications based on LCC critical value 5 resulted in 12.30 and 12.25% increment in maize grain yield over recommended practices during the year 2015 and 2016, respectively. Significant improvement for total biological yield, grain protein accumulation in maize and total N uptake by crop was observed in the direction of N application using LCC threshold point 5, CCM threshold point 40 and recommended practice. Applying nitrogen at whatever the times LCC critical point drops ≤ 5 also recorded 4.09 and 4.17 kg gain in grain produced (over recommended practice) kg−1 of N supplied (AEN), 0.16 and 0.17 kg gain in N uptake (over recommended practice) kg−1 of N supplied (REN) during 2015 and 2016, respectively and a total reduction of 51.14 kg N loss ha−1 (over recommended practice) for the entire study period. The study reveal that compared to blanket application, N fertilizers can be more efficiently managed with LCC threshold value 5 or CCM threshold value 40 for guiding N application with higher yield, NUE and reduced N losses in maize crop.

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At the rate of


Agronomic efficiency of nitrogen


Analysis of variance


Bright sunshine hours


Chlorophyll content index


Chlorophyll content meter


Days after planting


Days after sowing


Electrical conductivity




Gujarat Anand yellow maize hybrid

ha 1 :

Per hectare





kg ha 1 :

Kilogram per hectare




Leaf color chart


Least significant difference



m2 :

Meter square




Main maize research station




Nitrogen use efficiency


Organic carbon




Principal component


Principal component analysis


Partial factor productivity for nitrogen


Recommended dose of nitrogen


Recovery efficiency of nitrogen




Relative humidity


Soil plant analysis development




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Kumar, D., Patel, R.A., Ramani, V.P. et al. Evaluating Precision Nitrogen Management Practices in Terms of Yield, Nitrogen Use Efficiency and Nitrogen Loss Reduction in Maize Crop Under Indian Conditions. Int. J. Plant Prod. (2021). https://doi.org/10.1007/s42106-021-00133-9

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  • LCC
  • N loss
  • Nitrogen use efficiency
  • Yield