Browsing by Author "Sukmaya, Cucu"

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Analisis kadar NH4 dan NO3 tanah andisol wonosobo pada tanaman daun bawang

Messaya, Paramitha | Pratiwi, Vanny | Noviardi, Harry | Sukmaya, Cucu (2008)

Penggunaan pupuk yang berlebihan menyebabkan berbagai masalah, diantaranya ialah pencemaran lingkungan. Pengaturan dosis pupuk organik sangat penting pada budidaya intensif tanaman sayuran di dataran tinggi. Nitrogen ...
Synthesis of Apatite - Chitosan Composite Using Duck Eggshell and Chitosan with Temperature and pH Control

Sukmaya, Cucu | Maddu, Akhiruddin | Tri W, Setyanto (2010)

Composite of apatite-chitosan was prepared by using chitosan as polymer matrix. Calcium phosphate was prepared from CaO and (NH4)2HPO4, which the ratio Ca : P had to be 1.67. Chitosan is produced by deacetilase from ...