Evaluation of Soil Fertility in Dry Climate Dry Land in Pandawai District, East Sumba Regency

Abstract

One of the suboptimal lands that have the potential to increase their productivity is dry land with a dry climate. Dry land with a dry environment can be optimized if the land's carrying capacity is known. This study aims to identify soil chemical characteristics and fertility in several lands uses in Pandawai District, East Sumba Regency. This research was conducted in May-August 2022. The research method used was field observation, while the soil fertility index method was used for determining soil fertility. The results showed that the soil's cation exchange capacity was 30.07-39.27 m.e./100g, and the base saturation value of the soil was 71.06-98.25%. Soil P content 14.27-57.78 ppm, soil K content 0.25-1.24 m.e./100g, soil C-Organic content 0.21-2.02%. Low and moderate soil fertility status. Low fertility status at sample points 4, 5, 9, 10, 11, and 12, while average fertility status at 1, 2, 3, 6, 7, and 8. The limiting factor that causes low and moderate fertility status is organic C content.

Keywords:   Dry land, soil fertility.