Department of Soils & Environment, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Madurai 625 104, India.
Department of Agricultural Microbiology, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Madurai 625 104, India.
Int J Environ Res Public Health. 2018 Feb 17;15(2):358. doi: 10.3390/ijerph15020358.
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.
本研究旨在利用纤维素分解菌 Enhydrobacter 和真菌 Aspergillus sp. 从稻壳（RH）中制备堆肥。此外，还测试了制备的堆肥在黑土（典型的暗棕壤）和红土（典型的红壤）中不同推荐施肥量（RDF）水平下对黑绿豆生长促进的影响。结果表明，接种木质纤维素分解真菌（LCF）Aspergillus sp. @ 2%被认为是在短时间内最有效的堆肥方法。通过扫描电子显微镜（SEM）对堆肥稻壳（CRH）进行了表征，以确定其结构的显著变化。在堆肥结束时，随着 CO2 释放的减少，N、P 和 K 的含量增加，C:N 和 C:P 比值降低。与无机施肥相比，在典型暗棕壤和典型红壤中，CRH@ 5 t ha-1 与 50%RDF 和生物肥料的综合应用，在 100%RDF 基础上分别使粮食产量增加了 16%和 17%，超过了 100%RDF。粗蛋白含量最高，CRH 与 50%RDF 和生物肥料联合应用，在典型暗棕壤和典型红壤中的含量分别为 20%和 21%。营养丰富的 CRH 已证明其在作物生长和土壤肥力方面的效率。
