发明名称 |
TIMED RELEASE OF WATER-SOLUBLE PLANT NUTRIENTS |
摘要 |
Products for the variable controlled release of water soluble agents are disclosed. The products have a core of water soluble agent and a first and second coating. The first coating has a permeability such that the agent can be released at a controlled rate, while the second coating has a relatively low water vapor transmission rate. Variation in the coating thicknesses and coating conditions result in nutrient release profiles which can be tailored to specific plant requirements. After application of the product, release of the agent is negligible, but after a predetermined time, e.g. one month or more, substantial release of the agent from the coated product begins. The product is particularly suitable for delayed, controlled release fertilizers.
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申请公布号 |
CA2097870(C) |
申请公布日期 |
2004.04.20 |
申请号 |
CA19932097870 |
申请日期 |
1993.06.07 |
申请人 |
LUTHRA, NARENDER PAL;BULL, DARWIN SCOTT;HARGROVE, GARRARD LEE |
发明人 |
LUTHRA, NARENDER PAL;BULL, DARWIN SCOTT;HARGROVE, GARRARD LEE |
分类号 |
A01N25/26;C05C9/00;C05G3/00;(IPC1-7):C05G3/00;C05G1/00 |
主分类号 |
A01N25/26 |
代理机构 |
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