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Effects of various organic amendments on organic carbon pools and water stable aggregates under a scented rice-potato-onion cropping system

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Title Effects of various organic amendments on organic carbon pools and water stable aggregates under a scented rice-potato-onion cropping system
Not Available
 
Creator Rajeev Padbhushan, Rajiv Rakshit, Anupam Das & Rajendra Prasad Sharma
 
Subject Soil microbial biomass carbon Waterextractable organic carbon Carbohydrate fractions Aggregate stability
 
Description Not Available
Pools of organic carbon are quantified fromthe soil
samples under scented rice crop from different soil layers
(0–10, 10–20, and 20–30 cm) under 9 years’ long-term trials
with five treatments in scented rice–potato–onion cropping
system. These treatments were 100 % NPK (NPK), 50 %
recommended NPK through mineral fertilizers ? 50 % N as
FYM (NPK ? FYM), FYM ? vermicompost (VC) ? neem
cake (NC) each equivalent to one-third of recommended N
(FYM ? VC ? NC), 50 % N as FYM ? biofertilizer for
N ? bone meal to substitute phosphorus requirement of
crops ? phosphate solubilizing bacteria (FYM ? BFN
? BM ? PSB), FYM ? vermicompost ? neem cake each
equivalent to 1/3rd of recommended N ? PSB (FYM
? VC ? NC ? PSB). SMBC (479 mg kg-1), HWEOC
(373 mg kg-1), CWSCHO (235 mg kg-1), HWSCHO
(839 mg kg-1), and ASCHO (180 mg kg-1) were found to be
the highest in the soil treated with FYM ? VC ? NC ? PSB
and the lowest with NPK. The quantity of hot water-extractable
carbohydrate content is highest amongst cold water,
dilute acid and hot water extractable carbohydrate that
decreases with the soil depth irrespective of treatments, except
CWEOC. Soil microbial biomass carbon (SMBC) shows significant
correlation with CWEOC (r = 0.60 * *), HWEOC
(r = 0.94 * *), CWSCHO (r = 0.75 * *), HWSCHO (r =
0.83 * *), and ASCHO (r = 0.83 * *) that primed for better
aggregate stability irrespective of soil layers up to 30 cm depth.
This indicates that labile carbon pools, most specifically watersoluble
carbon, carbohydrate, microbial biomass, could be a
suitable indicator for evaluation of soil quality, particularly in
relation to soil aggregation
Not Available
 
Date 2019-12-05T06:53:44Z
2019-12-05T06:53:44Z
2015-11-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/27885
 
Language English
 
Relation Not Available;
 
Publisher Springer