Phenological Development and Thermal Indices in Sesame (Sesamum indicum L.) Varieties under different Dates of Sowing

Author: Shri Rakesh*, R.C. Bairwa, N.K. Pareek, Amit Kumawat, Ramesh Kumar and Sundar Anchra

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Abstract

Climate changes are becoming more common in India as a result of global warming. As a result, growth and yield of sesame are affected. Sesame (Sesamum indicum) is a short-day plant that grows and yields best in hot weather. Thermal indices are intimately related to crop growth and development. An endeavor to establish a link between thermal indices and sesame crop growth and development could aid in the development of novel varieties that are compatible with changing weather trends. Field experiment was conducted at the Instructional Farm, College of Agriculture, Swami Keshwanand Rajasthan Agricultural University, Bikaner during Kharif 2017. The experiment was laid out in a split plot design with three replications. The four dates of sowing (10 July, 20 July and 30 July, and 09 August) were allocated in main plots and four sesame varieties (RT-125, RT- 46, RT-127 and RT-346) in sub plots. Results revealed that timely sown crop had significantly higher values of GDD, PTU, PTI, HTU and H

Keywords

Sesame, sowing dates, varieties, GDD, PTU, PTI, HTU, and HUE.

Conclusion

The results of this study show that short-term fluctuations in ambient temperature are reflected in the phenothermal index during each phase of growth. Therefore, the index looks effective during the duration of the phenological occurrence to compare the crop reaction against the ambient temperature between the phenological phases and to reflect the effect of shifting atmospheric temperature. The differences in phenothermal indices for various stages of growth reveal the potential of the accumulated temperature could be utilized for studying biomass accumulation pattern at different phenological stages which ultimately influences the yield potential of crop.

References

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How to cite this article

Shri Rakesh, R.C. Bairwa, N.K. Pareek, Amit Kumawat, Ramesh Kumar and Sundar Anchra (2022). Phenological Development and Thermal Indices in Sesame (Sesamum indicum L.) Varieties Under Different Dates of Sowing. Biological Forum – An International Journa