Merits, utilization, perspectives of controlled-release nitrogen fertilizers
2002
Tian, X. (Tohoku Univ., Sendai (Japan)) | Saigusa, M.
This review paper introduces the concept, types, and advantages of controlled-release nitrogen fertilizers especially for some crops' response to these fertilizers, as well as their prospects. From the viewpoint of increasing plant recovery of applied N, improving crop quality (e.g. nutritional quality of vegetables) and avoiding environmental degradation, we can conclude from many experiments mainly conducted in Japan that the controlled-release fertilizers particularly polyolefin-coated fertilizers, showed obvious and great advantages comparing common readily available nitrogen fertilizers. It is important to mention that using controlled-release fertilizers has brought about innovation for whole cultivation systems such as rice. Because of relatively higher prices, currently controlled-release fertilizers only share a very small portion of the fertilizer market and are primarily used in some special crops in developed countries. However, with the increasing attention on the environment and further merits recognition of controlled-release fertilizer by people, as 'environmental friendly fertilizer'\controlled-release fertilizer has a bright prospect both in developed countries and in some developing countries such as China in the near future.
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