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Int. J. Environ. Res. Public Health 2018, 15(2), 358; https://doi.org/10.3390/ijerph15020358

Exploration of Rice Husk Compost as an Alternate Organic Manure to Enhance the Productivity of Blackgram in Typic Haplustalf and Typic Rhodustalf

1
Department of Soils & Environment, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Madurai 625 104, India
2
Department of Agricultural Microbiology, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Madurai 625 104, India
3
Department of Environmental Engineering, Konkuk University, Gwanjin-Gu 143-701, Korea
*
Authors to whom correspondence should be addressed.
Received: 26 December 2017 / Revised: 5 February 2018 / Accepted: 7 February 2018 / Published: 17 February 2018
(This article belongs to the Special Issue Sustainable Management of Waste)
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Abstract

The present study was aimed at using cellulolytic bacterium Enhydrobacter and fungi Aspergillus sp. for preparing compost from rice husk (RH). Further, the prepared compost was tested for their effect on blackgram growth promotion along with different levels of recommended dose of fertilizer (RDF) in black soil (typic Haplustalf) and red soil (typic Rhodustalf) soil. The results revealed that, inoculation with lignocellulolytic fungus (LCF) Aspergillus sp. @ 2% was considered as the most efficient method of composting within a short period. Characterization of composted rice husk (CRH) was examined through scanning electron microscope (SEM) for identifying significant structural changes. At the end of composting, N, P and K content increased with decrease in CO2 evolution, C:N and C:P ratios. In comparison to inorganic fertilization, an increase in grain yield of 16% in typic Haplustalf and 17% in typic Rhodustalf soil over 100% RDF was obtained from the integrated application of CRH@ 5 t ha−1 with 50% RDF and biofertilizers. The crude protein content was maximum with the combined application of CRH, 50% RDF and biofertilizers of 20% and 21% in typic Haplustalf and typic Rhodustalf soils, respectively. Nutrient rich CRH has proved its efficiency on crop growth and soil fertility. View Full-Text
Keywords: blackgram; cellulolytic microorganisms; compost; rice husk; microbial consortium blackgram; cellulolytic microorganisms; compost; rice husk; microbial consortium
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Thiyageshwari, S.; Gayathri, P.; Krishnamoorthy, R.; Anandham, R.; Paul, D. Exploration of Rice Husk Compost as an Alternate Organic Manure to Enhance the Productivity of Blackgram in Typic Haplustalf and Typic Rhodustalf. Int. J. Environ. Res. Public Health 2018, 15, 358.

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