Viability of liquid medium-inoculation of Rhizobium etli in planting furrows with common bean

Abstract: The objective of this work was to evaluate the viability of liquid medium inoculation of Rhizobium etli in the planting furrow and to certify the efficiency of its strain UFLA 02-100 as a potential inoculant for common bean (Phaseolus vulgaris). The treatments consisted of three application rates of liquid inoculant applied in the planting furrows or in common bean seed, besides two controls without inoculation. The inoculant contained 109 cells of Rhizobium etli mL-1. Regardless of the application method, the yield obtained with the inoculation was equivalent to that of N from urea; however, the application in the furrows, at 0.6 L ha-1, is more advantageous due to the operational practicality and reduced costs.摘要：本研究旨在评估在种植沟内采用埃氏根瘤菌（Rhizobium etli）液体培养基进行接种的可行性，并验证其菌株UFLA 02-100作为普通菜豆（Phaseolus vulgaris）潜在接种剂的应用效能。试验设置三种施用量的液体接种剂，分别施加于种植沟或普通菜豆种子表面，同时设置两个不接种的对照组。该接种剂的活菌浓度为每毫升10⁹个埃氏根瘤菌菌体。无论采用何种接种方式，接种处理的产量均与尿素施氮处理相当；但以0.6 L·ha⁻¹的剂量在种植沟内施用时，因操作便捷且成本更低，更具应用优势。