Gaind Sunita, Nain Lata, Patel V B
Division of Microbiology, Indian Agricultural Research Institute, New Delhi, 110012, India.
Biodegradation. 2009 Jun;20(3):307-17. doi: 10.1007/s10532-008-9223-1. Epub 2008 Nov 18.
Poultry droppings, neem cake, castor cake, jatropha cake and grass clippings were used separately as organic nitrogen additives to decrease the high C:N ratio of wheat straw. Composting was carried out aerobically in presence of fungal consortium developed by including Aspergillus awamori, Aspergillus nidulans, Trichoderma viride and Phanerochaete chrysosporium. The degraded product was characterized to assess the technical viability of organic nitrogen supplements as well as fungal consortium in improving the quality of compost and hastening the process of decomposition of high lignocellulolytic waste. Evaluation of maturity showed that mixture of wheat straw, poultry dropping and jatropha cake had the lowest C:N ratio of 10:1, the highest humic acid fraction of 3.15%, the lowest dehydrogenase activity and a germination index exceeding 80% in 60 days of decomposition. Inoculated and grass clipping amended wheat straw-poultry dropping mixture resulted in compost with highest humus content of 11.8% and C:N ratio of 13.5, humic acid fraction of 2.84% and germination index of 59.66%. Fungal consortium was effective in improving the humus content of all the composted mixtures. In some treatments, germination index could not be correlated with C:N ratio. Non edible oil seed cake supplemented substrate mixtures did not respond to fungal inoculation as far as C:N ratio was concerned.
分别使用家禽粪便、印楝饼、蓖麻饼、麻风树饼和剪草作为有机氮添加剂，以降低麦秸的高碳氮比。在由泡盛曲霉、构巢曲霉、绿色木霉和黄孢原毛平革菌组成的真菌联合体存在的情况下进行好氧堆肥。对降解产物进行表征，以评估有机氮补充剂以及真菌联合体在提高堆肥质量和加速高木质纤维素废物分解过程方面的技术可行性。成熟度评估表明，麦秸、家禽粪便和麻风树饼的混合物碳氮比最低，为10:1，腐殖酸含量最高，为3.15%，脱氢酶活性最低，在分解60天时发芽指数超过80%。接种且添加剪草的麦秸-家禽粪便混合物产生的堆肥腐殖质含量最高，为11.8%，碳氮比为13.5，腐殖酸含量为2.84%，发芽指数为59.66%。真菌联合体有效地提高了所有堆肥混合物的腐殖质含量。在某些处理中，发芽指数与碳氮比无关。就碳氮比而言，添加非食用油籽饼的底物混合物对真菌接种没有反应。
