Instituto Politécnico Nacional, CIIDIR-Oaxaca, Hornos 1003, Xoxocotlan, Oaxaca, Mexico.
Graduate Student, Master of Science in Natural Resource Conservation, Instituto Politécnico Nacional, CIIDIR-Oaxaca, Hornos 1003, Xoxocotlan, Oaxaca, Mexico.
J Sci Food Agric. 2019 Nov;99(14):6601-6607. doi: 10.1002/jsfa.9946. Epub 2019 Aug 26.
Phosphate-solubilizing bacteria (PSB) can be an environment-friendly strategy to improve crop production in low-phosphorus (P) or P-deficient soils. The effect of indigenous mixed inocula of PSB on Agave angustifolia Haw. growth was assessed. The four treatments evaluated were T1 (Pseudomonas luteola + Enterobacter sp.), T2 (Pseudomonas luteola + Bacillus sp.), T3 (Pseudomonas luteola + Acinetobacter sp.), and T4 (control); each was replicated 25 times using a completely randomized design during 12 months under rain-fed conditions. Additionally, P solubilization in vitro of the mixed inocula with three different sources of inorganic P was tested.
The mixed inocula were able to solubilize more P from tricalcium phosphate Ca (PO ) than from aluminum phosphate (AlPO ) and iron phosphate (FePO ). Relative to the control, T2 increased plant height by 22.9%, leaf dry weight by 391.4%, plant stem diameter by 49.6%, and root dry weight by 193.9%. The stem solid soluble content increased 50.0% with T1. Plant-available soil P increased 94.6% with T3 and 77.3% with T1. Soil alkaline phosphatase activity increased 85.9% with T1.
T2 was the mixed inoculum that most improved Agave angustifolia plant growth. The indigenous mixed inocula of PSB evaluated appears to be a practical and efficient option for promoting field growth of Agave angustifolia plants. However, further research is necessary to achieve a deeper understanding of the relationships between different PSB species and their effects on agave, which may reveal some of the mechanisms of the synergistic interactions that are involved in the promotion of plant growth. © 2019 Society of Chemical Industry.
解磷菌（PSB）可以作为一种环保策略，用于提高低磷（P）或缺磷土壤中的作物产量。本研究评估了土著混合 PSB 接种体对龙舌兰生长的影响。评估了 4 种处理方法：T1（铜绿假单胞菌+肠杆菌属）、T2（铜绿假单胞菌+芽孢杆菌属）、T3（铜绿假单胞菌+不动杆菌属）和 T4（对照）；每个处理重复 25 次，采用完全随机设计，在雨养条件下进行了 12 个月的试验。此外，还测试了混合接种体从 3 种不同来源的无机 P 中解磷的能力。
混合接种体能够从磷酸三钙（Ca3（PO4）2）中溶解更多的 P，而不是从磷酸铝（AlPO4）和磷酸铁（FePO4）中溶解。与对照相比，T2 使植物高度增加了 22.9%，叶片干重增加了 391.4%，茎直径增加了 49.6%，根干重增加了 193.9%。T1 使茎固体可溶性含量增加了 50.0%。T3 使土壤有效磷增加了 94.6%，T1 使土壤有效磷增加了 77.3%。T1 使土壤碱性磷酸酶活性增加了 85.9%。
T2 是最能提高龙舌兰植物生长的混合接种体。评估的土著混合 PSB 接种体似乎是促进龙舌兰田间生长的一种实用且高效的选择。然而，需要进一步研究以更深入地了解不同 PSB 物种之间的关系及其对龙舌兰的影响，这可能揭示一些促进植物生长的协同相互作用的机制。 © 2019 化学工业协会。
