4.7 Article

Influence of phosphorus-solubilizing compounds on soil P and P uptake by perennial ryegrass

期刊

BIOLOGY AND FERTILITY OF SOILS
卷 49, 期 5, 页码 587-596

出版社

SPRINGER
DOI: 10.1007/s00374-012-0749-3

关键词

Phosphorus fixation; Mehlich-I extractable phosphorus; Soil phosphorus; Phosphorus solubilization

向作者/读者索取更多资源

Found throughout the world, phosphorus (P)-fixing soils have long been studied for their effect on the availability of P fertilizers for crop production. It is known that organic acids in the rhizosphere affect P solubilization and uptake, although effectiveness has been shown to vary with acid, crop, and soil characteristics. Regardless, commercial products have been developed that include some formulation of organic acids intended to increase P solubility and uptake. Thus, the objective of this research was to evaluate the ability of the commercial P-solubilizing products Avail (maleic-itaconic copolymer) and P Miner (organic acid-based product) to maintain a greater pool of plant-available P for uptake by perennial ryegrass (Lolium perenne L.). Greenhouse experiments were conducted with P fertilization (0, 17, 34, and 50 kg P ha(-1)) and P solubilization materials in an incomplete 4 x 5 factorial design. Treatments were added to a soil with a high P-fixing capability and perennial ryegrass planted. Collected data included plant dry matter and P content, and acid (Mehlich-I) and labile (CaCl2) extractable soil P concentrations. Results are not definitive, but they indicate that both Avail and P Miner have the potential to improve available forms of P in the soil that are available to ryegrass. In these greenhouse trials, the application of P Miner at four times the recommended rate (480 kg ha(-1)) resulted in highest labile and acid-extractable P, while application of Avail and P Miner at the recommended rate (120 kg ha(-1)) resulted in the highest P uptake.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据