EVALUASI KESUBURAN TANAH PADA BERBAGAI TUTUPAN LAHAN DI KEBUN RAYA BOGOR

Abstract

Bogor Botanic Gardens (BBG), which one of the oldest Botanic Garden in Southeast Asia has more than 12.000 specimen of plants collections. The state soil fertility management is essential for collection in BBG, but currently the soil fertility in BBG unknown. This study aims to evaluate soil fertility condition with analysis of soil chemical and physical properties. Expected to a consideration in the collection management fertility herbs optimal expected to grow. The study conducted in March–October 2019. Methods used is land survey detail (1:5,000–1:10,000 of scales) to a special purpose fertility land the chemistry and physics properties. The sampling location determined by overlaying map of the garden, land cover (grass, litter, and without litter) and contour. The soil samples are collected using the sample ring and disturbed soil method. Variables were observed consisting of texture, pH, cation exchange capacity, total nitrogen, P2O5 available, K2O available, and C organic. The results showed soil fertility class in BBG had low until medium fertility (94,07 %) at various type of land cover. Covers litter having soil fertility higher compared to others (45,32%) (low–medium category). Advice that can be recommended is the litter zoning management, litter so that the process of decomposing organic cycle runs covered.