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Soil loss tolerance values for different physiographic regions of Central India

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Title Soil loss tolerance values for different physiographic regions of Central India
Not Available
 
Creator Brij Lal Lakaria,
H.Biswas
D. Mandal
 
Subject Soil loss tolerance limits, T values, soil functions, erodibility, Central India
 
Description Not Available
In India, a single soil loss tolerance (T) value of 11.2 Mg ⁄ ha is by default used for formulating land
restoration strategies for all soil types, climates and vegetation covers. However, this single ‘T’ value
does not represent a true picture of soil loss tolerance under all land uses. The objective of our study
was to develop adjusted ‘T’ values for Central India using soil infiltration rate, bulk density, total
organic carbon, erodibility and soil pH. Soil state was defined using a quantitative model involving
different soil functions which were used to convert soil parameters to a 0 to 1 scale. The normalized
values were then multiplied by appropriate weighing factors based on relative importance and sensitivity analysis of each indicator. Based on overall assessment, each soil mapping unit was categorized
into soil groups I, II or III. A general guideline of USDA – Natural Resource Conservation Service
(USDA-NRCS) was followed to calculate soil loss tolerance for each soil group using effective soil
depth. Adjusted ‘T’ values for Central India ranged from 2.5 to 12.5 Mg ⁄ ha compared with a default
value of 11.2 Mg ⁄ ha. Use of these values for soil mapping units will improve conservation planning
and assist with planning the development of sustainable agriculture
Not Available
 
Date 2020-05-15T14:30:43Z
2020-05-15T14:30:43Z
2008-01-01
 
Type Article
 
Identifier Not Available
1475-2743
http://krishi.icar.gov.in/jspui/handle/123456789/35668
 
Language English
 
Relation Not Available;
 
Publisher British Society of Soil Science