What is a stable fertilizer
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Today, I happened to read an article on China Fertilizer Network titled “The Leaders in China’s Stabilized Fertilizer Industry.” After reading it, I was a bit confused. What is a stable fertilizer? There is no relevant information available on Baidu, nor are any related articles found on CNKI. I’ve gotten a general idea of what stable-release fertilizers are, and how they differ from controlled-release fertilizers? Does anyone know anything about this stable fertilizer?
Stable fertilizers are long-acting slow-release fertilizers, usually containing urease inhibitors or nitrification inhibitors.
Stable fertilizers are nitrogen-containing fertilizers (including binary or ternary nitrogenous fertilizers as well as elemental nitrogen fertilizers) to which urease inhibitors and/or nitrification inhibitors have been added through specific processes. Once applied to the soil, these inhibitors prevent the hydrolysis of urea via urease inhibitors, and/or inhibit the nitrification of ammonium nitrogen via nitrification inhibitors, thereby extending the duration of their effectiveness
Reply to 3# chinazwr: Adding urease inhibitors can slow down the conversion of urea into ammonium bicarbonate, and I can understand how this helps achieve controlled release. But I have some questions: in the southern regions where rainfall is high, if stable fertilizers are used, there might be a problem, as most of the urea nitrogen can be washed away by the rainwater first. At this point, the urease inhibitor seems not to be exerting its intended effect. For vegetables and similar plants that do not like urea nitrogen and absorb it in concentrated amounts, will the use of stable fertilizers prevent them from getting enough nutrients? Yang www.terrabetter.com
Stable fertilizer is a type of long-acting, slow-release fertilizer. The industry standards for stable fertilizers were drafted by the **Fertilizer Quality Supervision and Inspection Center (Shanghai)** and the Shenyang Institute of Applied Ecology of the Chinese Academy of Sciences; these standards have now been approved and are set to come into effect around March 2011