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Subba Rao, A.
- Greenhouse Gas Emission and Soil Properties as Influenced by Wheat Biomass Burning in Vertisols of Central India
Abstract Views :257 |
PDF Views:93
Authors
Sangeeta Lenka
1,
N. K. Lenka
1,
R. C. Singh
2,
A. Subba Rao
1,
S. Kundu
1,
Jyothi Raghuwansi
1,
C. P. Patidar
2
Affiliations
1 Indian Institute of Soil Science, Nabibagh, Berasia Road, Bhopal 462 038, IN
2 Central Institute of Agricultural Engineering, Nabibagh, Berasia Road, Bhopal 462 038, IN
1 Indian Institute of Soil Science, Nabibagh, Berasia Road, Bhopal 462 038, IN
2 Central Institute of Agricultural Engineering, Nabibagh, Berasia Road, Bhopal 462 038, IN
Source
Current Science, Vol 107, No 7 (2014), Pagination: 1150-1154Abstract
Biomass burning is a major contributor to the atmospheric carbon budget and increases the concentration of many trace gases apart from the adverse effects on soil properties. However, in many parts of India, crop residue burning is a recurrent and widespread practice for disposal of the residues after harvest of the previous crop to facilitate sowing of the succeeding crop. The residue burning on a larger scale also leads to severe atmospheric pollution. Against this backdrop, the present work was conducted to study the effect of wheat (Triticum aestivum) residue burning on soil properties and assess the potential greenhouse gas emission from burning of such residues on a regional scale. The study was taken up on farmers' field in Bhopal district, Madhya Pradesh, with two residue disposal methods, viz. residue burning and residue removal, for comparison with respect to their effect on soil properties and the greenhouse gas emission potential. No significant difference was observed between both methods in terms of soil organic carbon, inorganic carbon and available P content at 0-15 and 15-30 cm soil depths. Though residue burning showed favourable effect on available K content, there was reduction in the available N content in the 15-30 cm soil depth. Residue burning did not show significant effect on soil biological activity as estimated from fluorescence diacetate test. On the other hand, there was a significant adverse effect on soil structure and labile carbon content. Residue burning was estimated to result in the emission of 379 Gg C equivalent for India and 14 Gg C equivalent for MP.Keywords
Biomass Burning, Greenhouse Gas Emission, Soil Properties, Wheat.- Phosphorus Supply May Dictate Food Security Prospects in India
Abstract Views :269 |
PDF Views:89
Authors
Affiliations
1 Indian Institute of Soil Science, Bhopal 462 038, IN
2 Indian Institute of Horticultural Research, Bengaluru 560 089, IN
1 Indian Institute of Soil Science, Bhopal 462 038, IN
2 Indian Institute of Horticultural Research, Bengaluru 560 089, IN
Source
Current Science, Vol 108, No 7 (2015), Pagination: 1253-1261Abstract
Importance of phosphorus (P) in agriculture and how its availability or otherwise could influence the food security of India and the world is studied. Rock phosphate (RP) is the only economic source of P but its availability is finite and skewed. India has very limited known resource of RP which is mostly low to medium grade in quality, thus making it almost entirely dependent on imports. The low soil P fertility in large parts of the country has accentuated the problem and reinforced the importance of most scientific and judicious use of P. A large number of practical measures such as using low grade indigenous RPs, mobilization of P from RPs, some best agronomic practices to effectively and economically utilize RPs and P recovery from solid and liquid wastes are suggested in the article along with some researchable issues. These if implemented could reduce the reliance on P import as well as provide food and nutritional security.Keywords
Availability, Fertility, Phosphorus, Rock Phosphate, Yield.- Phosphates from Detergents and Eutrophication of Surface Water Ecosystem in India
Abstract Views :297 |
PDF Views:90
Authors
Affiliations
1 Indian Institute of Soil Science, Nabibagh, Berasia Road, Bhopal 462 038, IN
1 Indian Institute of Soil Science, Nabibagh, Berasia Road, Bhopal 462 038, IN