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Soil moisture release behaviour and irrigation scheduling for Aravalli soils of Eastern Rajasthan Upland

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Title Soil moisture release behaviour and irrigation scheduling for Aravalli soils of Eastern Rajasthan Upland
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Creator Sharma R P, Singh R S and Arora Sanjay
 
Subject Moisture release, Irrigation scheduling, Land use planning, Alluvial soils, Aravalli Hills
 
Description Not Available
Study area consists of the alluvial plains of Kothari River, which is the tributary of Banas and
situated in Eastern Rajasthan Upland. The area surrounded by Aravalli hills where sand constituted
the major part of the soil. This study is concerned with the relationship of the soil moisture retention
and release properties with irrigation scheduling and land use plan along with their texture,
particularly the clay and silt fraction. Twelve pedons representing various topographic positions
and zone of rainfall were sampled to study the soil-plant-water relationship in alluvial soils. viz.,
upper rolling plains, middle sloping plains, lower plains. Soil moisture retention characteristics
explained that the soils of the upper rolling plains have capacity to retain low amount of plant
available water (AWC 7.31cm/m) as compared to the soils of middle sloping plain (AWC 12.87
cm/m) and lower plain (AWC 14.02 cm/m). Volumetric water content at different suction pressures
viz. 33, 100, 500, 800, 1000, 1200 and 1500 kPa were studied in the alluvia of the river. About 75
percent of available water found to be released below the suction pressure of 500 kPa. The amount
of available moisture for plant between 33 to 100 kPa was 59, 55 and 51 per cent while between 100
to 500 kPa it was 16, 20 and 22 per cent in upper rolling plains, middle sloping plains and lower
plains, respectively. Silt and clay fractions were found to be the major factor controlling the available
moisture. Coefficient of variation in moisture retention was noted from moderate (15–35%) to high
(>35%) magnitude within the plains. In present investigation moisture retention of soils depleted
to about 50 per cent at 100 kPa suction pressure so that irrigation should be delivered to replenish
the soil moisture storage at this stage to keep target of maximum economic yield.
Not Available
 
Date 2020-05-26T10:00:32Z
2020-05-26T10:00:32Z
2014-01-01
 
Type Research Paper
 
Identifier Sharma R P, Singh R S and Arora Sanjay (2014). Soil moisture release behaviour and irrigation scheduling for Aravalli soils of Eastern Rajasthan Upland. Journal of Soil and Water Conservation. 13 (1), 58-67.
Not Available
0022-457X
http://krishi.icar.gov.in/jspui/handle/123456789/36286
 
Language English
 
Relation Not Available;
 
Publisher Soil Conservation Society of India