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Estimation of soil loss in rubber (Hevea brasiliensis) growing areas of Kerala and Karnataka, India

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Title Estimation of soil loss in rubber (Hevea brasiliensis) growing areas of Kerala and Karnataka, India
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Creator SP Maske, KS Anil Kumar, KM Nair, Rajendra Hegde, S Srinivas, K Sujata and BP Bhaskar
 
Subject Agro-ecology, Modified Fournier Index, Rubber, Soil loss, USLE
 
Description Not Available
Soil erosion is viewed as a major process of land degradation in rubber-growing areas under hot moist sub-humid to humid agro-ecological region of Kerala and Karnataka in India. The bench mark survey with geo-reference at 121 locations was carried out with the objective of deriving soil-water conservation strategies in the extensive rubber-growing areas of Kerala and Karnataka (5.2 lakh hectares with productivity of 1514 kg/hectare). In the present study, Rainfall erosivity for 7 locations (considering monthly rainfall 1971 to 2007) and soil erodibility (Epipedons of 121 bench mark soils) were used. Monthly rainfall data, for the period 1971 to 2007 were used to compute the Modified Fournier index (MFI) The results showed that June, July and August receive maximum rainfall with very high Modified Fournier index (>160) from 433.4 (Trivandrum) to 2641.2 MJ mm ha-1 h-1 y-1 (Kannur) with an increasing from southward to northward. The soil erodibility (K) for five major soil subgroups of humults were 0.15 to 0.24 indicating that these soils are weakly susceptible to water erosion. Majority of the area (45.73% of TGA) is susceptible to extremely strong erosion followed by very strong erosion on 25.40 per cent of TGA and strong erosion in 22.28 per cent of TGA. The soil loss estimations can serve as effective inputs in prioritizing soil conservation strategies and management in rubber growing areas of Kerala and Karnataka.
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Date 2020-12-27T07:39:05Z
2020-12-27T07:39:05Z
2019-12-01
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/44100
 
Language English
 
Relation Not Available;
 
Publisher International Journal of Chemical Studies