Record Details

Management strategies for sustainable crop production in saline Vertsisols

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Management strategies for sustainable crop production in saline Vertsisols
Not Available
 
Creator R. L. Meena,
R. K. Yadav
Khajanchi Lal
 
Subject saline vertisols, management, sustainable, bio-saline
 
Description Not Available
In the course of the present century, the world population has increased from less than two thousand
million to over Six and a half thousand million. Until one hundred years ago, the expanding population’s
increasing needs for food, fuel, fibre and construction materials were met from the land by cultivating
progressively larger areas. The much greater increase in population during this century has been supported
mainly by intensifying the use of much of the land that is already cultivated. In the next 25 years a further 200
million people will be added to global population and most of this growth will take place in the tropics. As a
result, the demands which will be placed on the soil and water resources of the tropics will far exceed those of
the past. In the arid and semi arid regions where low rainfall coupled with uncertainty of its occurrence has
been the limiting factor in the crop production. The salt affected soils are an important ecological entity in India
and it is estimated that nearly 6.73 m ha is affected with this menace. The problem being dynamic in nature,
the extent keeps on changing. The extent of Vertisols covers a total of about 340 million hectares. Most
Vertisols occur in the semi-arid tropics, mainly in Gezira and other parts of central Sudan, South Africa,
Ethiopia, and Tanzania in Africa, the Deccan plateau of India in Asia and Australia. The Extent of Vertisols
and associated soils in India is approximately 72.9 million hectares, comprising 22.2 % of total geographical
area of the country. Vertisols and associated soils are mainly confined between 8045’ to 260 N latitude and 60
to 83 0 E longitude in India, extensively occurring in Madhya Pradesh, Maharashtra, Gujarat, Andhra Pradesh,
Tamil Nadu and Rajasthan. Vertisols are imperfectly to poorly drained, leaching of soluble weathering
products is limited, the contents of available calcium and magnesium are high and pH is above 7.
This is due to the very low hydraulic conductivity. As a result of soil degradation, there have been
negative effects such as decrease in farm production due to abandoned farm lands, decline in resource
productivity, and cut back in resources use. Similarly at the regional level there have been displacement of
labour from agriculture, widening of income disparities and adverse effect on the sustainability of agriculture
based sectors. For better management of land and water resources would not only tackle dynamic nature of
soil salinity but also increase the productivity of the soils.
Not Available
 
Date 2019-11-24T10:38:50Z
2019-11-24T10:38:50Z
2008-10-01
 
Type Book chapter
 
Identifier R. L. Meena, R. K. Yadav and Khajanchi Lal (2008). Management strategies for sustainable crop production in saline Vertsisols In: Chemical Changes & Nutrient Transformation in Sodic/Poor Quality Water Irrigated Soils. (Yaduvanshi, N.P.S., Yadav, R.K., Bundela, D.S., Kulshreshtha, N and Singh Gurbachan, Eds) CSSRI, Karnal. pp 103-107.
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/25106
 
Language English
 
Relation Not Available;
 
Publisher Central Soil Salinity Research Institute, Karnal