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Dolomite Phosphate Rock-Based Slow-Release Fertilizer for Agriculture and Landscapes TEXT SIZE: A A A

Most soils in Florida are very sandy, and water-soluble fertilizers (WSF) are subjected to leaching loss. Alternate fertilization is a promising practice to reduce such loss. Dolomite phosphate rock (DPR), which contains calcium, magnesium, and phosphorus, is potentially useful for agricultural production and landscaping plants. In this study, DPR fertilizers were developed from mixing of DPR material and N-viro soil. A typical agricultural soil (Alfisol) in Florida was used for greenhouse studies, and ryegrass and citrus seedlings were tested. The DPR fertilizers appeared superior to WSF for the growth of ryegrass based on dry-matter yield and nutrient concentrations in plant; however, it was not evident in citrus seedlings. DPR fertilizers were effective in raising pH (by 3 units) and electrical conductivity of acidic sandy soils and increasing soil organic matter, total nutrients, and available nutrients. The concentrations of copper, lead, and zinc in the plant tissues were less than toxicity limits. 

Publication name  COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS Volume: 43  Issue: 9  Pages: 1344-1362  Published: 2012
Author(s)  Yang, Yuangen; He, Zhenli; Yang, Xiaoe; Fan, Jinghua; Stoffella, Peter; Brittain, Charlotte
Corresponding author  

 HE Zhenli
 zhe@ufl.edu  
 Univ Florida, IFAS, IRREC, 2199 S Rock Rd, Ft Pierce, FL 34945 USA  

 Author(s) from IGCAS  YANG Yuangen

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