Abstract:
The aims of this research were to study pH, C-organic, exchangeable Al, P-Available (Bray II), and Fe-DTPA, due to applications of crandallite extract and organic matter fraction of peat and chicken dung on Humic Hapludults. This research was conducted at Jatinangor. The Laboratory experiment was arranged in factorial split-split plot design consisted of two kinds of organic matter (peat and chckien dung) as main plot, three levels organic fractions namely: without organic fraction, humic fraction, and fulvic fraction as subplots. Etch treatment unit was replicated three times so it produced 72 experiment units. Result showed that humic fraction application at different level of crandallite extract increased soil pH, Fe-DTPA, dry weight of root and shoot. Crandallite extract application increased P-available. Humic Fractions increased organic C in soil, dray weight of shoot, and decreased exchangeable Al.
