Nitrogen release from polyolefin-coated urea with attention to individual weights |
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Authors: | Shigeru Takahashi Shin-ichi Ono |
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Affiliation: | (1) Department of Soils and Fertilizers, National Agriculture Research Center, 305 Tsukuba, Japan |
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Abstract: | Nitrogen release from individual granules of polyolefin-coated urea (POCU) was studied in order to evaluate a variation in N release. Individual granules were immersed in 10 ml water at 25°C for 7 and 20 d. Individual granules of POCU had different weights and N release rates. An increase in the individual weights of POCU led to a decrease in the N release for both incubation periods. This relationship between the N release and individual weights may be related to the coating thickness. |
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Keywords: | coating thickness controlled release granule weight polyolefin-coated urea release rate slow release |
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