The problem with dry land is that it has a low fertility rate which causes low land productivity, so that production is low. This study aims to determine the suitability of upland rice land and soil fertility status in 3 sub-districts, namely Air Periukan, Pondok Kelapa, and Kerkap. The parameters observed were land characteristics which included climate data and soil physical and chemical properties. Data analysis was carried out by matching each land characteristic with the conditions for upland rice growth. The conclusion was based on the smallest value (minimum law) as a land suitability decision. The results showed that the suitability of the upland rice field in Air Periukan District, Pondok Kelapa district, and Kerkap district are included in S3 classes. Furthermore, the limiting factors for those districts are different. In the Air Periukan District, water availability and nutrient retention as limiting factors. However, only water availability is a limiting factor in Pondok Kelapa district. The land suitability in the Kerkap district for upland rice land has a limiting factor regarding nutrient retention and nutrient availability. The suggested alternative for soil cultivation in the research area is increasing C-organic and CEC, improving other nutrient content by providing manure, straw compost, and giving balanced inorganic fertilizers.
Rice is a staple food for the Indonesian people and is a national strategic commodity for national food security. Rainfed area is a potential land to support national rice production, by improving soil management through balanced fertilization based on the soil characteristics. This study aims to determine the soil fertility and alternative management implemented in 2019 and 2020 in Sukaraja and Pondok Kelapa sub districts, Bengkulu Province. Soil fertility status for CEC, base saturation, C-organic, total P and total K taken based on the classification of the value of the combination of these chemical properties. The results showed that the soil fertility status of the rainfed rice fields in Sukaraja and Pondok Kelapa sub districts was low. The limiting factors for soil fertility for Sukaraja sub district are alkaline saturation, total K-total and P-total for Pondok Kelapa sub district. The limiting factors are all elements related to nutrient status assessment, namely CEC, base saturation, total P, total K and C-organic. Alternative soil management is carried out in an integrated manner by providing balanced organic and inorganic fertilizers. The provision of soil amendments such as straw compost, manure, biochar and agricultural lime/dolomite, especially for acid reacting soils, aims at increasing soil fertility before fertilization is applied.
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