Assessment Of Sensor Based Precision Nitrogen Management For Enhancing Productivity And Profitability Of Maize In Godavari Delta Of Andhra Pradesh

Authors

  • V. Sujatha Agricultural Research Station, Peddapuram, Kakinada Dist., Acharya N.G. Ranga Agricultural University (ANGRAU), Guntur, Andhra Pradesh – 531001 https://orcid.org/0000-0002-6850-3785
  • Sudhir Kumar Agricultural Research Station, Peddapuram, Kakinada Dist., Acharya N.G. Ranga Agricultural University (ANGRAU), Guntur, Andhra Pradesh – 531001
  • S.L. Jat ICAR-Indian Institute of Maize Research, PAU Campus, Ludhiana
  • A.K. Singh ICAR-Indian Institute of Maize Research, PAU Campus, Ludhiana

Keywords:

Site specific nutrient management, Nitrogen, Green seeker, Growth, Yield attributes, Yield, B, C ratio.

Abstract

A field study was conducted at Agricultural Research Station, Peddapuram, Kakinada Dist, Andhra Pradesh, India during kharif 2018 and 2019 on a sandy loam soils to assess effect of sensor-based nitrogen application on growth, yield and economics of maize.  The precision nutrient management practices had significant effect on the growth and yield attributes of maize. It was observed that in second year, higher yield level obtained in all treatment and corresponding increase in the N dose under GS guided N application was also observed which shows that this tool optimizes the N application as per yield target/potential. The green seeker (GS) based precision nutrient management practice increased grain yield of maize to the tune of 3.4-5.6 per cent over recommended doses of fertilizers( RDF).The adoption of GS guided nitrogen application increased the net returns by Rs. 4,257-6,273 ha-1 over RDF by saving money on costly fertilizer inputs. These GS based treatments gave 7.1to 10.5 % higher net returns along with 29% to 49% increased agronomic N use efficiency and saving of 23.5 to 61.5 Kg N /ha over blanket RDF of 200 kg N/ha. Our experimental results disclosed that in-season N management based on green seeker sensor-based technology could be a better strategy towards higher yield with optimized N use efficiency and thereby reducing the cost of cultivation than blanket recommendations in maize.

Author Biography

V. Sujatha, Agricultural Research Station, Peddapuram, Kakinada Dist., Acharya N.G. Ranga Agricultural University (ANGRAU), Guntur, Andhra Pradesh – 531001

Department of Agronomy

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Published

2024-11-01

Issue

Vol. 67 No. 2

Section

Articles

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