PENGARUH PENGGUNAAN ABU VULKANIK TERHADAP KUALITAS PUPUK ORGANIK KOTORAN SAPI
The purpose of this research is to determine the effect of volcanic ash as composting material on quality of cow feces fertilizer. The materials used were rice straw, cow feces, lime, rice husk ash, volcanic ash, EM4, and molasses. The research consists of three steps, those were the producing of...
| Main Authors: | , |
|---|---|
| Format: | Thesis |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2013
|
| Subjects: |