A Preliminary Study of Shellac Coated Fertilizers on Mellon in Plastic House
Lin, C. C., C. M. Wu, W. J. Jiang, C. W. Lin and S. N. Huang
Different coated fertilizers were produced by using Taiwan compound fertilizer No. 43 as core and coated with different amounts of shellac. The coated fertilizers were applied on dipping cultivation system to plastic-house melon production, and compare to conventional dipping systems used by the farmer. Results showed that the formulated shellac coated fertilizers used in this study had higher yield and a better performance with benefits of saving cost and labor. The treatment with market available slow release fertilizer, had an inferior performance because the released amount of nitrogen and potassium can not cope with the demands of plant growth, in comparison to the treatments of cultivated fertilizer liquid and the shellac coated fertilizers. Results in this study revealed that shellac coated fertilizers could replace cultivated liquid treatments in plastic-house dipping systems. However, it is necessary to match the growth characteristics of crop and select suitable kinds and dosages of fertilizers.
Key words: Controlled release fertilizer,
Granulation, Coated fertilizer, Shellac
Accepted for publication: December 10, 2010