Roy Deblina, Gunri Sunil Kumar, Kundu Champak Kumar, Bandyopadhyay Prasanta Kumar
Department of Agronomy, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, 741252, India.
Department of Agricultural Chemistry and Soil Science, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, 741252, India.
Curr Res Microb Sci. 2024 Sep 16;7:100277. doi: 10.1016/j.crmicr.2024.100277. eCollection 2024.
A laboratory pot experiment (Experiment 1) was conducted to determine the optimal ratio of groundnut haulm and shell as composting substrates. The aim was to identify the most effective combination for rapid decomposition under conditions. The experiment was carried out in 2022, from May to July, using a completely randomized design (CRD) with 6 treatments that were replicated 4 times. The treatment combinations in the pot experiment were as follows: T: haulm + shell (1:1), T: haulm + shell (2:1), T: haulm + shell (3:1), T: T + C, T: T + C, and T: T + C. Here, C refers to the cellulose-degrading efficient microbial consortium containing bacterial strains DBJ6, DMB9, and fungal strains DAJ2, DTJ4, and CBS129.27. Based on the results (results of chemical and biological properties) of the pot experiment, treatment T was considered the best treatment (the C/N ratio was 14.36 ± 0.444 after three months of decomposition) for further study under conditions. The experiment (Experiment 2) was conducted at the Jaguli Instructional Farm of Bidhan Chandra Krishi Viswavidyalaya, West Bengal, India, during the months of August to October in both 2022 and 2023 with two treatments: the normal composting treatment (NC) and the rapid composting treatment (RC). The findings of Experiment 2 showed that organic substrates degraded more quickly (within 90 days) during rapid composting, as evidenced by a decrease in the C/N ratio to below 15 (14.32 and 13.97 on day 90 in 2022 and 2023, respectively). Whereas, normal composting required more than 90 days to achieve a C/N ratio below 20 (23.80 and 23.15 on day 90 in 2022 and 2023, respectively). The RC treatment also showed a higher microbial population and enzyme activity compared to the NC treatment. Therefore, according to the results of this experiment, it can be concluded that the inoculation of the microbial consortium was more beneficial for accelerating the composting process under the same composting circumstances and substrate ratio.
进行了一项实验室盆栽试验（实验1），以确定花生秧和花生壳作为堆肥基质的最佳比例。目的是找出在特定条件下能实现快速分解的最有效组合。该实验于2022年5月至7月进行，采用完全随机设计（CRD），有6种处理，每种处理重复4次。盆栽试验中的处理组合如下：T1：花生秧 + 花生壳（1:1），T2：花生秧 + 花生壳（2:1），T3：花生秧 + 花生壳（3:1），T4：T1 + C，T5：T2 + C，T6：T3 + C。这里，C指的是含有细菌菌株DBJ6、DMB9以及真菌菌株DAJ2、DTJ4和CBS129.27的纤维素降解高效微生物联合体。根据盆栽试验的结果（化学和生物学性质结果），处理T4被认为是在特定条件下进一步研究的最佳处理（分解三个月后C/N比为14.36 ± 0.444）。实验2于2022年和2023年8月至10月在印度西孟加拉邦比丹·钱德拉·克里希纳维斯瓦维迪亚拉大学的贾古利教学农场进行，有两种处理：常规堆肥处理（NC）和快速堆肥处理（RC）。实验2的结果表明，在快速堆肥过程中有机底物降解更快（90天内），这体现在C/N比降至15以下（2022年和2023年第90天分别为14.32和13.97）。而常规堆肥需要超过90天才能使C/N比降至20以下（2022年和2023年第90天分别为23.80和23.15）。与NC处理相比，RC处理还显示出更高的微生物数量和酶活性。因此，根据该实验结果可以得出结论，在相同的堆肥环境和底物比例下，接种微生物联合体对加速堆肥过程更有益。
