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Effect of Organic Inputs on Strength and Stability of Soil Aggregates Associated Organic Carbon Concentration under Rice-Wheat Rotation in Indo-Gangetic Plain Zone of India

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Title Effect of Organic Inputs on Strength and Stability of Soil Aggregates Associated Organic Carbon Concentration under Rice-Wheat Rotation in Indo-Gangetic Plain Zone of India
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Creator R.K. Naresh, A.S. Panwar, S.S. Dhaliwal, R.K. Gupta, Arvind Kumar, R.S. Rathore, Ashok Kumar, Dipender Kumar, Mohan Lal, Sunil Kumar, Saurabh Tyagi, Vineet Kumar, S.P. Singh, Vikrant Singh and Nihal Chandra Mahajan
 
Subject Tensile strength, Aggregates, Soil organic C, Carbon dynamics, Mean weight diameter
 
Description Not Available
The study aims to elucidate the impact of organic inputs on strength and structural stability of
aggregates in a sandy loam soil of Indo-Gangetic Plain Zone of India. Tensile strength, friability
and water stability of aggregates, and the carbon contents in bulk soil and in large macro (>2 mm),
small macro (0.25-2 mm), micro (0.053-0.25 mm) and silt+ clay size (0.25 mm) constituted 58–92% of water stable
aggregates and varied significantly among treatments and soil depths. Organic material
incorporation improved soil aggregation and structural stability and resulted in higher C content
in macro-aggregates. Higher macro-aggregates in the crop residue- and farmyard manure-treated
soils resulted in a higher aggregate mean weight diameter, which also had higher soil organic C
contents. The bulk soil organic C had a strong relation with the mean weight diameter of
aggregates, but the soil organic c content in all aggregate fractions was not necessarily effective
for aggregate stability. The soil organic C content in large macro-aggregates (2-8mm) had a
significant positive effect on aggregate stability, although a reverse effect was observed for
aggregates
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Date 2019-12-04T08:47:44Z
2019-12-04T08:47:44Z
2017-01-01
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/27216
 
Language English
 
Relation Not Available;
 
Publisher Excellent Publiser