Characterizing the growth promotion capabilities of phosphate solubilizing bacterial strains on canola and corn in a greenhouse setting

表征温室环境中双低油菜籽和玉米上解磷细菌菌株的生长促进能力

基本信息

批准号：
507090-2017
负责人：
Sparling, Richard
金额：
$ 0.58万
依托单位：
University of Manitoba
依托单位国家：
加拿大
项目类别：
Engage Plus Grants Program
财政年份：
2017
资助国家：
加拿大
起止时间：
2017-01-01 至 2018-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640741
关键词：
Characterizing growth promotion capabilities phosphate

项目摘要

Manure generated from hog farming can be a beneficial soil amendment for agricultural crops, since it is highin both nitrogen and phosphate. However, most of the phosphate is insoluble, and since the application regimeis based on nitrogen content, much of this insoluble phosphate accumulates over time. This limits the amountof hog manure that can be applied. In Manitoba, fields near hog farms have reached the limit of allowableadded phosphate, and the transport of manure any great distance becomes cost prohibitive limiting itsapplication to a wider region. While insoluble phosphorous can be effectively solubilized using chemicalacidification with sulphuric acid, mobilization of insoluble phosphorous to crop plants is often inefficient,reducing phosphorous removal into crop material and reducing potential crop yield. Manure solids left behindfrom the acid phosphorous solubilization step can serve as a soil conditioner and if supplemented withphosphate solubilizing, growth promoting bacteria can act as a source of beneficial bacteria for in situphosphate solubilization and mobilization to field crops. In the previous Engage grant, we have shown twostrains of Pseudomonas sp. isolated for KGS Engineering are effective at solubilizing calcium phosphate atnear neutral pH and have some efficacy in promoting plant growth in pure culture and in initial growthchamber studies using canola seeds and seedlings. The purpose of the current Engage+ proposal is to comparethe plant promotion capabilities for plant associated phosphate solubilization as well as further growthpromotion capabilities using Manitoba-relevant seed crops, with a focus on canola, and corn.

由养猪产生的肥料可能是农作物的有益土壤修正案，因为它是氮和磷酸盐的高蛋白。但是，大多数磷酸盐都是不溶性的，并且由于基于氮含量的应用机制，这种不溶性磷酸盐的大部分会随着时间的推移而累积。这限制了可以施用的猪肥料的量。在曼尼托巴省，养猪场附近的田地已达到允许绘制的磷酸盐的极限，并且肥料的运输任何距离的距离都会使其成本越来越高，将其应用于更广泛的地区。尽管使用硫酸化学酸化可以有效地溶解不溶性的磷，但动员不溶性磷向作物植物的动员通常效率低下，从而减少了磷的去除到作物材料中并降低了潜在的作物产量。肥料固体从酸磷酸化的溶解步骤中留在后面，可以用作土壤护发素，如果补充磷酸盐溶解度，促进细菌的生长可以作为situphosphathate溶解和动员田间作物的有益细菌的来源。在以前的参与者赠款中，我们展示了Pseudomonas sp的两种材料。用于KGS工程的分离有效地溶解磷酸钙atnear中性pH值，并在促进纯培养物和使用低芥酸菜子种子和幼苗的初始生长体研究中具有一定疗效。当前的参与+建议的目的是比较植物相关的磷酸盐溶解的植物促进能力，以及使用与马尼托巴省相关的种子作物的进一步的生长促进能力，重点是芥菜和玉米。