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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 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
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 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2019.8(3): 2190-2198
DOI: https://doi.org/10.20546/ijcmas.2019.803.262


Assessment of Soil Loss from Agricultural Lands of South Andaman District in Tropical Islands
B.K. Nanda1*, N. Sahoo2 and B. Panigrahi2
1ICAR-KVK, Port Blair
2Department of Soil and Water Conservation Engineering, CAET, OUAT,
Bhubaneswar, India
*Corresponding author
Abstract:

Soil loss was estimated from agricultural lands of South Andaman district in tropical Bay Islands applying Universal Soil Loss Equation (USLE). Mean annual rate of soil loss to the tune of 184.1 X 103 tons was estimated from the crop fields of the district covering 1747.0 ha area at the rate of 105.38 t ha-1 yr-1. In South Andaman district, kharif crops (rice, maize, arhar, ground nut, ginger, sweet potato, tapioca and turmeric) are grown in medium to low lands whereas rabi crops (pulses and vegetables) are grown in uplands. The cropping intensity is 104.0%. Maximum (136.8 thousand tons) and minimum (0.06 thousand tons) soil loss was obtained from the cultivation of vegetables (1317.0 ha) and arhar (0.5 ha), respectively. The highest (124.8 t ha-1 yr-1) and the lowest (70.6 t ha-1 yr-1) rate of soil loss were obtained from the cropping pattern of rice-fallow-fallow and ginger-fallow, respectively. Among the double cropped land, the sequence of sweet potato-vegetable-fallow contributes the lowest rate of soil loss (68.76 t ha-1 yr-1), whereas the cropping sequence of rice-fallow-vegetable yielded the highest rate of soil loss (106.25 t ha-1 yr-1). The average rate of soil loss from double cropped land is 86.02 t ha-1 yr-1. The study reveals that converting more mono crop area into double cropped land will reduce the average soil loss annually by 18.4%.


Keywords: Crop land, Erosivity, Land degradation, Soil loss, Tropical islands
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How to cite this article:

Nanda, B.K., N. Sahoo and Panigrahi, B. 2019. Assessment of Soil Loss from Agricultural Lands of South Andaman District in Tropical Islands.Int.J.Curr.Microbiol.App.Sci. 8(3): 2190-2198. doi: https://doi.org/10.20546/ijcmas.2019.803.262