Study on economics of biochar application in cotton – maize – cowpea cropping sequence under integrated nutrient management

Elangovan, R.; Rangasami, S. R. Shri; Murugaragavan, R.; Sekaran, N. Chandra

doi:10.15740/has/ijps/17/ocaebgd/1-11

Cited by 1 publication

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“…Reports say that the biochar yield is highly dependant on the pyrolysis conditions such as temperature, heating rate and residence time (Uzun et al, 2006;Tsai et al, 2007) [29,28] and is also greatly influenced by physical, chemical and biological properties of the raw materials used ( . Elangovan (2014) [8] reported recovery percentage of 12 to 40, when pyrolysis was done using different biological residues. Phuong et al (2015) [21] concluded that the decrease in biochar yield might be due to the thermal decomposition of organic material present in the residues.…”

Section: Resultsmentioning

confidence: 99%

Production and characterization of vermicompost and biochar from rice straw

Amritha¹,

S²

2020

J Pharmacogn Phytochem

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Soil Quality" is the capacity of a specific kind of soil to function within natural or managed ecosystem boundaries to sustain plant and animal productivity, maintain or enhance water and air quality and support human health and habitation. One of the major threats for soil quality is the intensive use of agrochemicals coupled with soil degradation processes. Vermicomposting has emerged as a promising eco-friendly approach for recovering degraded soils and equally good is the application of biochar, a carbonaceous material produced from pyrolysing biomass for both remediation and for soil carbon storage potentials. The vermicompost and biochar mentioned in the present study are rice straw based products. The lower bulk density of straw and its products compared to soil shows its promising role in reducing the soil bulk density and increasing the porosity besides its capability to hold more water when applied to soil. The process of vermicomposting helped to increase the nutrients viz., N, P, K, Ca, Mg, S, and silicon and decrease that of carbon, cellulose and lignin thereby narrowing down the C: N ratio. Conversion of residues into biochar helped to increase content of most of the nutrients in the final product, while nitrogen, cellulose and lignin content were found to decrease after pyrolysis. Pyrolysis process imparted more recalcitrant character by increasing aromatic compounds as evidenced from FT-IR analysis, thus ensuring its suitability for carbon sequestration.

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