Different Management of Nitrogen Application Affected Growth Characteristic of Maize  (Zea mays L)

Jyothsna K.; J Padmaja; D Sreelatha; R Mahender Kumar; A Madhavi

doi:10.9734/ijecc/2024/v14i44134

Research Article Open access CC BY 4.0

Different Management of Nitrogen Application Affected Growth Characteristic of Maize (Zea mays L)

Jyothsna K., J Padmaja, D Sreelatha, R Mahender Kumar, A Madhavi

International Journal of Environment and Climate Change · pp. 487–493 · Published 22 Apr 2024

10.9734/ijecc/2024/v14i44134

Abstract

A field study was conducted during Kharif 2019-20 at Professor Jayashankar Telangana State Agricultural University (PJTSAU), Rajendranagar, Hyderabad, Telangana, India to evaluate different handheld decision support tools for precision nitrogen management in rainfed maize (Zea mays L.). The study utilized a randomized block design and was replicated three times. The eight treatments included applying nitrogen through the State-recommended dose of 200 kg ha-1 in three splits (RDN), using a leaf color chart (LCC) based on N at thresholds 3 and 4, using a soil plant analysis development (SPAD) chlorophyll meter based on N at thresholds 35 and 40, and using a Green Seeker based on N at NDVI 0.6 and 0.8 in comparison with RDN and absolute control. Based on Green Seeker NDVI at threshold 0.8, the results showed that applying nitrogen resulted in considerably greater yields for maize grain (8408 kg ha-1), stover (9923 kg ha-1), and harvest index (45.8%). with higher yield and growth parameter viz., test weight (36.3 g ), No. of grain rows row-1 (36.7), cob length (18.9 cm), plant height (223.7 cm), leaf area (6385.75 cm2) and dry matter accumulation (18193 kg ha-1) as compared to RDN. Similarly, Green Seeker based N at NDVI 0.8 also registered higher net returns (Rs. 118961 ha-1) and B: C ratio (4.05).

Grain yield precision nitrogen management maize growth response fertilizer use efficiency

References (4)

1 Improving the.Productivity and Sustainability of Rice-Wheat Systems of the lndo-Gangetic Plains: A Synthesis of NARS-IRRI Partnership Research [DOI]
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Jyothsna K., J Padmaja, D Sreelatha, R Mahender Kumar, A Madhavi (2024). Different Management of Nitrogen Application Affected Growth Characteristic of Maize (Zea mays L). International Journal of Environment and Climate Change , 487–493. https://doi.org/10.9734/ijecc/2024/v14i44134

Affiliations

Jyothsna K. — Department of Agronomy, College of Agriculture, Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad, Telangana, India.
J Padmaja — Department of Agronomy, College of Agriculture, Rajendranagar, Hyderabad, Telangana, India.
D Sreelatha — Department of Agronomy, Maize Research Centre, ARI, Rajendrangar, Hyderabad, Telangana, India.
R Mahender Kumar — Indian Institute of Rice Research, Hyderabad, Telangana, India.
A Madhavi — Department of Soil Science and Agricultural Chemistry, AICRP-STCR, ARI, Rajendranagar, Hyderabad, Telangana, India.

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