lewisjk wrote:I would never use time-release fertilizer. You never know when those little capsules are going to pop. I like more control over when my plants get fed. Besides, it is conceivable that local weather conditions could cause a lot of them to pop at once, causing problems.
Those capsules (called a prill), are manufactured to be temperature and moisture sensitive and release the right amount of fertilizer according to the ambient temperature and water content of the soil. Osmicote for example, makes different types for different areas of the country just because of that property. I have used it for years and because I'm in the Southern part of the country where we have hot summers I get the southern formulation. Getting the right formulation will preclude problems. They can pop from handling issues.
lewisjk wrote:Ok lets just pretend that you put 200 little capsules, poured at random from the bottle. The bottle has an even mixture of capsule a-b and c, but you get by chance 80% a and 20% c. If the temperature/moisture trigger hits "a" after you apply it, you're gonna get a heavy dose of whatever.
Or maybe I'm just too anal retentive and like to KNOW when my trees get fed.
frankp0 wrote: Research at Michigan State Univ has suggested that either ammoniacal or nitrate forms are available to the plant more rapidly than urea.
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