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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(5): 223-240
DOI: https://doi.org/10.20546/ijcmas.2020.905.026


Weekly Rainfall Analysis for Crop Planning in Junagadh District of Gujarat, India
Pappu Kumar Paswan1, G. R. Sharma2, Abhishek Pratap Singh3 and M. D. Ojha4*
1Department of Soil and Water Conservation Engineering, College of Agricultural Engineering and Technology, Junagadh Agricultural University, Junagadh, 362001, Gujarat, India
2Department of Soil and Water Conservation Engineering, College of Agricultural Engineering and Technology, Polytechnic in Agricultural Engineering,
 Junagadh Agricultural University, Targhadia, Rajkot, Gujarat, India
3Krishi Vigyan Kendra, Purnea, BAU, Sabour, India
4Nalanda College of Horticulture, Noorsarai, Nalanda, BAU, Sabour, India
*Corresponding author
Abstract:

The historical rainfall data for the period of 37 years (1981-2017) of Junagadh district in Gujarat were analyzed for selection of most appropriate probability distribution of rainfall. From the analysis, it was found that one single probability distribution has not been found appropriate to represent all the data sets though Gamma distributions, Gumbel max.distribution and generalized extreme value distribution were found promising for most of the data sets. The best-fit distribution has been employed for obtaining the assured quantum of rainfall pertaining to23-42 Standard Meteorological Weeks (SMW) at various probability levels. The minimum assured rainfall of 20 mm and more are expected from SMW 27 onwards at 70% probability. This indicated that the sowing of kharif crops has to be done during the 27 SMW for maximum utilization of rain water. Weekly reference evapotranspiration values were estimated by the Penmen Monteith method. Water balance study by Thornthwaite and Mather. Revealed that water deficit was found to be 51.40 mm in driest year and maximum water surplus was 42.80 mm. Crop water requirement of groundnut (bunch and spreading), cotton and wheat are 338.63 mm, 414.08 mm, 818.42 mm and 581.28 mm respectively. Based on the analysis, crop planning in Junagadh district of Gujarat is suggested.


Keywords: Weekly Rainfall, Probability distribution, Water balance, Crop Planning
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How to cite this article:

Pappu Kumar Paswan, G. R. Sharma, Abhishek Pratap Singh and Ojha. M. D. 2020. Weekly Rainfall Analysis for Crop Planning in Junagadh District of Gujarat, India.Int.J.Curr.Microbiol.App.Sci. 9(5): 223-240. doi: https://doi.org/10.20546/ijcmas.2020.905.026