Gopal Murali, Gupta Alka, Sunil E, Thomas George V
Central Plantation Crops Research Institute, Kasaragod, Kerala, India.
Curr Microbiol. 2009 Jul;59(1):15-20. doi: 10.1007/s00284-009-9388-9. Epub 2009 Mar 11.
The population densities of 15 microbial communities in the coconut leaves + cow manure mixture (10:1 ratio, w/w) and pure cow manure, gut contents of the earthworm, Eudrilus sp., reared on the above substrates and vermicompost produced by the worm were studied. The enumeration was done by dilution plate and most probable number method using several selective and semi-selective microbial media. In the vermicompost produced from coconut leaves + cow manure (CLV) mixture, 9 out of 15 microbial communities, particularly the plant beneficial ones, were amplified whereas five communities were amplified in case of pure cow manure (CMV). The CLV contained significantly high population of fungi, free-living nitrogen fixers, phosphate solubilizers, fluorescent pseudomonads, and silicate solubilizers. The CMV was preponderant with aerobic heterotrophic bacteria, actinomycetes, and Trichoderma spp. Spore formers were present in similar numbers in both the vermicomposts. Presence of Azotobacter was detected only in CMV. The results obtained in this study suggest coconut leaf litter to be a good alternative for cow manure for the production of vermicompost, especially in the areas where coconut is grown in plenty.
研究了椰叶与牛粪混合物（10:1比例，重量/重量）、纯牛粪、以上述基质饲养的蚯蚓（Eudrilus sp.）肠道内容物以及蚯蚓产生的蚯蚓堆肥中15个微生物群落的种群密度。使用几种选择性和半选择性微生物培养基，通过稀释平板法和最大可能数法进行计数。在由椰叶+牛粪（CLV）混合物产生的蚯蚓堆肥中，15个微生物群落中有9个，特别是对植物有益的群落被扩增，而在纯牛粪（CMV）的情况下有5个群落被扩增。CLV含有大量的真菌、自生固氮菌、解磷菌、荧光假单胞菌和硅酸盐解磷菌。CMV中好氧异养细菌、放线菌和木霉属占优势。两种蚯蚓堆肥中芽孢形成菌的数量相似。仅在CMV中检测到固氮菌的存在。本研究获得的结果表明，椰叶凋落物是生产蚯蚓堆肥的牛粪的良好替代品，特别是在椰子大量种植的地区。
