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Soil and Plant Nutrient Dynamics in Castor –based Cropping Systems as influenced by Conservation Agricultural Practices

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Title Soil and Plant Nutrient Dynamics in Castor –based Cropping Systems as influenced by Conservation Agricultural Practices
Not Available
 
Creator Mithra R S
Suresh G
Qureshi, M. A. A
Rekha , K. B.
 
Subject Conservation Agriculture
Organic carbon
Available N
Nutrient uptake
 
Description Not Available
A field experiment was conducted during kharif 2021, at Narkhoda farm, ICAR-Indian Institute of
Oilseeds Research, to study the effect of conservation agricultural practices on soil and plant
nutrient dynamics. The experiment was laid out in split-plot design with 3 replications on red sandy
loam soil (Alfisols) under rainfed conditions. The treatments comprised of three tillage treatments in
main plots viz., conventional tillage, reduced tillage, zero tillage and four cropping systems with
residue incorporation in subplots viz., sole castor, castor + redgram (1:1), castor + greengram (1:3)
and castor + groundnut (1:3). The results indicated that at harvest, highest soil organic carbon
(SOC) content was found in reduced tillage (0.64%) followed by zero tillage (0.63%) and the lowest
in conventional tillage (0.56%). Among inter cropping systems, SOC was recorded highest (0.67%)
in castor + redgram (1:1) and lowest (0.55%) in sole castor treatment. The status of post-harvest
soil available N, P, K (kg/ha) was recorded highest in reduced tillage (208.6, 54.03, 515.9 kg N, P, K
/ha respectively) and lowest in conventional tillage (196.7, 38.57, 486.8 kg N, P, K /ha) while, zero
tillage (203.6, 47.15, 506.7 kg N, P, K /ha) was at par with the reduced tillage. Among the cropping
systems, castor + redgram (208.1, 60.12, 517.9 kg N, P, K /ha) recorded highest available N, P, K
while lowest in sole castor (201.6, 38.60, 494.0 kg N, P, K /ha) treatment. Total N, P, K uptake (kg/ha) by castor crop at harvest was highest in conventional tillage (56.13, 19.99, 31.97 kg N, P, K
/ha respectively) followed by reduced (49.24, 16.81, 26.28 kg N, P, K /ha) and the lowest (38.36,
13.15, 21.99 kg N, P, K /ha) was recorded in zero tillage. Among intercropping cropping systems N,
P, K uptake by castor crop was recorded highest in sole castor (60.22, 18.66, 32.35 kg N, P, K /ha)
treatment while lowest was recorded in castor + redgram (1:1) (26.65, 10.28, 15.93 kg N, P, K /ha).
In general, the interaction effect between tillage and intercropping system were found non-significant.
ICAR-IIOR Hyderabad
 
Date 2023-02-14T10:41:47Z
2023-02-14T10:41:47Z
1001-01-01
 
Type Research Paper
 
Identifier Not Available
ISSN:2581-8627
http://krishi.icar.gov.in/jspui/handle/123456789/76207
 
Language English
 
Relation Not Available;
 
Publisher International Journal of Environment and Climate Change