Department of Microbiology, Punjab Agricultural University, Ludhiana, 141004, India.
School of Organic Farming, Punjab Agricultural University, Ludhiana, 141004, India.
Curr Microbiol. 2024 May 14;81(7):172. doi: 10.1007/s00284-024-03701-0.
India's livestock industry is grappling with a shortage of green fodder, necessitating concerted efforts to boost organized production and ensure a sufficient supply of high-quality forages, crucial for formulating nutritionally balanced, cost-effective, and rumen-healthy animal diets. Hence, this study was conducted to assess the plant growth-promoting characteristics of liquid microbial inoculants and their impact on the yield of forage pearl millet. The bacterial cultures utilized included Sphingobacterium sp., Stenotrophomonas maltophilia, and an isolate from vegetable cowpea, subsequently identified as Burkholderia seminalis. These cultures were initially characterized for their plant growth-promoting traits at different temperature and physiological conditions. All the bacterial cultures were found promising for PGPR traits over varied temperature conditions and the optimum activity was recorded at 40 °C, with tolerance to saline and drought stresses as well as wide pH and temperature ranges. A field experiment was conducted during kharif 2020 at Punjab Agricultural University, Ludhiana and Punjab Agricultural University, Regional Research Station, Bathinda, involving combinations of liquid microbial inoculants along with 100% Recommended Dose of Fertilizer (RDF). It was observed that the treatment including B. seminalis + S. maltophilia along with RDF yielded the highest green fodder and dry matter yield, In conclusion, it is evident that the utilization of these liquid microbial inoculants holds significant potential for playing a pivotal role in the integrated nutrient management of forage pearl millet, thereby contributing to heightened productivity and sustained soil health.
印度的畜牧业正面临着绿色饲料短缺的问题，需要共同努力来促进有组织的生产，并确保高质量饲料的充足供应，这对于制定营养均衡、经济高效且对瘤胃健康的动物饲料至关重要。因此，进行了这项研究，以评估液体微生物接种物的植物促生长特性及其对饲料珍珠粟产量的影响。使用的细菌培养物包括鞘氨醇单胞菌、嗜麦芽寡养单胞菌和一种来自蔬菜豇豆的分离物，随后被鉴定为拜氏土壤杆菌。这些培养物最初在不同的温度和生理条件下被表征其植物促生长特性。所有的细菌培养物都表现出良好的植物促生特性，在不同的温度条件下，最佳活性记录在 40°C，具有耐盐和干旱胁迫以及广泛的 pH 值和温度范围的能力。2020 年在旁遮普农业大学卢迪亚纳和旁遮普农业大学巴廷达地区研究站进行了一项田间试验，涉及液体微生物接种物与 100%推荐施肥量 (RDF) 的组合。结果表明，包含 B. seminalis + S. maltophilia 以及 RDF 的处理产生了最高的绿色饲料和干物质产量。总之，利用这些液体微生物接种物在饲料珍珠粟的综合养分管理中发挥关键作用具有重要意义，从而有助于提高生产力和维持土壤健康。
