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Effect of inorganic fertilisers and organic amendments on soil aggregation and biochemical characteristics in a weathered tropical soil

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Title Effect of inorganic fertilisers and organic amendments on soil aggregation and biochemical characteristics in a weathered tropical soil
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Creator Shamsudheen Mangalassery
D. Kalaivanan
Prabha. S. Philip
 
Subject Cashew
Microbial biomass carbon
Microbial biomass nitrogen
Soil carbon
Organic farming
Soil enzymes
Soil aggregation
 
Description Not Available
Highly weathered laterite soils are a characteristic feature of humid tropics with undulating topography and high rainfall. The crop of cashew (Anacardium occidentale L.) has been cultivated in such landscapes, mainly to prevent further degradation due to the drought hardiness of cashew and requirement of very limited soil disturbances for its cultivation. Providing proper nutrient management is important for balancing the nutrient removal by tree crops especially in poor fertile soils. A study was initiated, after 5 years of application of inorganic fertilisers and organic amendments to cashew in a weathered tropical soil, to evaluate the effects of organic and inorganic sources of nutrients on soil aggregation and biochemical characteristics. The experiment consisted of 11 treatments as Farm Yard Manure (FYM) alone; FYM + biofertiliser consortia; FYM, rock phosphate and wood ash; poultry manure; In situ composting using recyclable cashew biomass and weeds; In situ composting using recyclable cashew biomass and weeds + green manuring; vermicomposting of recyclable cashew biomass; FYM + organic cakes + recyclable cashew biomass + biofertiliser consortia; recommended dose of nitrogen, phosphorus and potassium fertiliser (NPK fertiliser); recommended NPK fertiliser + FYM; and control without nutrient application. Soil samples were collected from surface 0-30 cm layer. The soil samples were fractionated into three aggregate sizes, i.e., >2 mm (large macroaggregates), 0.25 to 2 mm (small macroaggregates), 0.053 to 0.25 mm (microaggregates) and
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Date 2019-10-11T08:20:03Z
2019-10-11T08:20:03Z
2018-12-15
 
Type Article
 
Identifier Mangalassery, S., Kalaivanan, D. and Philip, S.P. (2019) "Effect of inorganic fertilisers and organic amendments on soil aggregation and biochemical characteristics in a weathered tropical soil. Soil and Tillage Research 187: 144-151
0167-1987
http://krishi.icar.gov.in/jspui/handle/123456789/23246
 
Language English
 
Relation Not Available;
 
Publisher ScienceDirect