Effect of sowing dates and nitrogen management on thermal time requirement and heat use efficiency of Rabi maize in Odisha
Rapid climate changes are imperative and it is crucial to evaluate and find ways that work for nitrogen (N) fertilizer management with appropriate sowing dates to prevent critical growth stages from being impacted by changing climatic conditions. Considering this, a field experiment was carried out...
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Association of agrometeorologists
2025-03-01
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| Series: | Journal of Agrometeorology |
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| Online Access: | https://journal.agrimetassociation.org/index.php/jam/article/view/2707 |
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| author | DEEPIKA NALLI SUPRAVA NATH TUFLEUDDIN BISWAS |
| author_facet | DEEPIKA NALLI SUPRAVA NATH TUFLEUDDIN BISWAS |
| author_sort | DEEPIKA NALLI |
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Rapid climate changes are imperative and it is crucial to evaluate and find ways that work for nitrogen (N) fertilizer management with appropriate sowing dates to prevent critical growth stages from being impacted by changing climatic conditions. Considering this, a field experiment was carried out in the Rabi season of 2023-24 at the Post Graduate Research Farm of Centurion University of Technology and Management, Odisha. The experiment was laid out in a split-plot design with different sowing dates and nitrogen split applications at different times with varying proportions. The main plots consisted of four sowing dates and four nitrogen split applications were considered in sub-plots. Results revealed that the early sown crop (31st October) took a higher number of days and heat units to attain various phenophases. Maize sown on 31st October consumed maximum heat units of 1750 ℃ days and the significantly highest heat use efficiency (HUE) of 3.56 kg ha-1 ℃ day-1 for grain yield compared to minimum heat units (1665℃ days) and the significantly lowest HUE of 2.81 kg ha-1 ℃ day-1 for 15th December sown crops. Among split applications of nitrogen, treatment consisting of 25% N basal+25% N prior to knee high + 25% N at knee high +25% N at tasseling recorded the highest HUE (3.55 kg ha-1 ℃ day-1). The sowing of maize crop on 31st October with 25% N basal+25% N prior to knee high + 25% N at knee high +25% N at tasseling have been found to be the most efficient for heat utilisation.
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| format | Article |
| id | doaj-art-eabc76c163c14b668d6e5c39e21c5633 |
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| issn | 0972-1665 2583-2980 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Association of agrometeorologists |
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| series | Journal of Agrometeorology |
| spelling | doaj-art-eabc76c163c14b668d6e5c39e21c56332025-08-20T02:25:13ZengAssociation of agrometeorologistsJournal of Agrometeorology0972-16652583-29802025-03-0127110.54386/jam.v27i1.2707Effect of sowing dates and nitrogen management on thermal time requirement and heat use efficiency of Rabi maize in OdishaDEEPIKA NALLI0SUPRAVA NATH1TUFLEUDDIN BISWAS2Department of Agronomy & Agroforestry, Centurion University of Technology and Management, Paralakhemundi, Odisha- 761211Department of Agronomy & Agroforestry, Centurion University of Technology and Management, Paralakhemundi, Odisha- 761211Symbiosis Statistical Institute, Symbiosis International (Deemed University), Pune-411004, India Rapid climate changes are imperative and it is crucial to evaluate and find ways that work for nitrogen (N) fertilizer management with appropriate sowing dates to prevent critical growth stages from being impacted by changing climatic conditions. Considering this, a field experiment was carried out in the Rabi season of 2023-24 at the Post Graduate Research Farm of Centurion University of Technology and Management, Odisha. The experiment was laid out in a split-plot design with different sowing dates and nitrogen split applications at different times with varying proportions. The main plots consisted of four sowing dates and four nitrogen split applications were considered in sub-plots. Results revealed that the early sown crop (31st October) took a higher number of days and heat units to attain various phenophases. Maize sown on 31st October consumed maximum heat units of 1750 ℃ days and the significantly highest heat use efficiency (HUE) of 3.56 kg ha-1 ℃ day-1 for grain yield compared to minimum heat units (1665℃ days) and the significantly lowest HUE of 2.81 kg ha-1 ℃ day-1 for 15th December sown crops. Among split applications of nitrogen, treatment consisting of 25% N basal+25% N prior to knee high + 25% N at knee high +25% N at tasseling recorded the highest HUE (3.55 kg ha-1 ℃ day-1). The sowing of maize crop on 31st October with 25% N basal+25% N prior to knee high + 25% N at knee high +25% N at tasseling have been found to be the most efficient for heat utilisation. https://journal.agrimetassociation.org/index.php/jam/article/view/2707Heat unitsHeat use efficiencyNitrogen managementPhenologySowing dates |
| spellingShingle | DEEPIKA NALLI SUPRAVA NATH TUFLEUDDIN BISWAS Effect of sowing dates and nitrogen management on thermal time requirement and heat use efficiency of Rabi maize in Odisha Journal of Agrometeorology Heat units Heat use efficiency Nitrogen management Phenology Sowing dates |
| title | Effect of sowing dates and nitrogen management on thermal time requirement and heat use efficiency of Rabi maize in Odisha |
| title_full | Effect of sowing dates and nitrogen management on thermal time requirement and heat use efficiency of Rabi maize in Odisha |
| title_fullStr | Effect of sowing dates and nitrogen management on thermal time requirement and heat use efficiency of Rabi maize in Odisha |
| title_full_unstemmed | Effect of sowing dates and nitrogen management on thermal time requirement and heat use efficiency of Rabi maize in Odisha |
| title_short | Effect of sowing dates and nitrogen management on thermal time requirement and heat use efficiency of Rabi maize in Odisha |
| title_sort | effect of sowing dates and nitrogen management on thermal time requirement and heat use efficiency of rabi maize in odisha |
| topic | Heat units Heat use efficiency Nitrogen management Phenology Sowing dates |
| url | https://journal.agrimetassociation.org/index.php/jam/article/view/2707 |
| work_keys_str_mv | AT deepikanalli effectofsowingdatesandnitrogenmanagementonthermaltimerequirementandheatuseefficiencyofrabimaizeinodisha AT supravanath effectofsowingdatesandnitrogenmanagementonthermaltimerequirementandheatuseefficiencyofrabimaizeinodisha AT tufleuddinbiswas effectofsowingdatesandnitrogenmanagementonthermaltimerequirementandheatuseefficiencyofrabimaizeinodisha |