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Indian Journal of Pure & Applied Biosciences (IJPAB)
Year : 2020, Volume : 8, Issue : 6
First page : (406) Last page : (415)
Article doi: : http://dx.doi.org/10.18782/2582-2845.8485

Effect of Climatic Factors on Chill Units Accumulation and Productivity of Apple Crop in Mountainous Region of Himachal Pradesh

Priyanka* and Bhardwaj
Department of Environmental Sciences, College of Forestry
Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan 173230 H.P
*Corresponding Author E-mail: acharyapriyanka21@gmail.com
Received: 9.11.2020 | Revised: 15.12.2020 | Accepted: 22.12.2020 

 ABSTRACT

The present investigation was carried out for during 2016-2017 for Kullu and Shimla district of Himachal Pradesh. The results revealed that cumulative chill units of Kullu showed a decreasing trend of the order of 6.61 CU/year. Month-wise chill units accumulation (Nov-Feb) revealed maximum decrease of 2.54 CU for the month of February. Similarly, the cumulative chill units of Shimla also showed decreasing trend of the order of 10.9 CU/year and overall decrease of 337.9 CU over the last thirty-one years. The maximum monthly decrease of 5.19 CU for the month November at Shimla district. The average number of chill units available for the apple crop followed a decreasing trend as 1182 CU at Shimla followed by 558.29 CU at Kullu. The productivity of last five years (20012-2017) showed a decreasing trend of the order of    0.11 ton/ha/year for Kullu and 0.186 ton/ha/year for Shimla.

Keywords: Utah model, Chill units, Productivity.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Priyanka & Bhardwaj (2020). Effect of Climatic Factors on Chill Units Accumulation and Productivity of Apple Crop in Mountainous Region of Himachal Pradesh, Ind. J. Pure App. Biosci. 8(6), 406-415. doi: http://dx.doi.org/10.18782/2582-2845.8485