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Soil Quality Assessment using Deviation method under Different Soil and Nutrient Management Practices in Rainfed Vertisol

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Title Soil Quality Assessment using Deviation method under Different Soil and Nutrient Management Practices in Rainfed Vertisol
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Creator K. L. Sharma, M. B. Guled, K. P. R. Vittal, G. Subba Reddy, G. Maruthi Sankar, G. Ravindra Chary , J. Kusuma Grace, U. K. Mandal, K. Srinivas, Pravin N. Gajbhiye and M. Madhavi
 
Subject Soil quality, deviation method, soil quality indicators, relative soil quality index, long-term, sorghum
 
Description Not Available
ABSTRACT: To evaluate the long term influence of existing soil and nutrient management practices on soil quality
using Relative Soil Quality Index (RSQI) approach, two ongoing long term integrated nutrient management experiments
in medium black soil (Typic Chromustert) of Bijapur centre were adopted for the study. First experiment was initiated in
1984-85 under rabi sorghum-safflower crop rotation with T1: control, T2: Sorghum- 50 kg N: 25 kg P2O5: 0 kg K2O ha-
1 recommended dose of fertilizer (RDF), Safflower- 37.5 kg N: 50 kg P2O5 :15 kg K2O ha-1 (RDF), T3: 50% N (FYM),
T4: 50 % N sunhemp and T5: 50% RDF + 15 kg ha-1 ZnSO4 as soil-nutrient management treatments. Second experiment
was initiated in 1998-99 under rabi sorghum with T1: Control, T2: 100% N urea; T3: 25 kg N (compost); T4: 15 kg N
(compost) + 20 kg N (inorganic), T5: 15 kg N (sunhemp) + 20 kg N (inorganic) and T6: 15 kg N (compost) + 10 kg N
(sunhemp) as management treatments. Soil samples collected from these two experiments during 2005 were processed
and analyzed for 16 soil quality indicators and Relative Soil Quality Index (RSQI) was computed. In the first set, the
order of treatments from the view point of RSQI was 50% RDF + 15 kg ha-1 ZnSO4 (1.00) > 50% N (FYM) (0.97) > 50
kg N: 25 kg P2O5: 0 kg K2O ha-1 (RDF for Sorghum) - 37.5 kg N: 50 kg P2O5 :15 kg K2O ha-1 (RDF for Safflower) (0.84)
> 50 % N sunhemp (0.76). Application of 50% RDF + 15 kg ha-1 ZnSO4 to sorghum and safflower was found superior
most. In the second set, application of 15 kg N (compost) + 10 kg N (sunhemp) (RSQI 1.00) was found most promising.
Based on the RSQI, the general ranking was 15 kg N (compost) + 10 kg N (sunhemp) (1.00) > 15 kg N (compost) + 20 kg N (inorganic) (0.86) > 100% N urea (0.78) > 25 kg N compost (0.64) > 15 kg N (sunhemp) + 20 kg N (inorganic) (0.62). The full paper deals with the method of soil quality assessment and computation in detail
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Date 2018-09-19T07:21:49Z
2018-09-19T07:21:49Z
2007-12-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/7013
 
Language English
 
Relation Not Available;
 
Publisher ISDA