Kalamansi orange jam is processed from calamansi orange fruit with the addition of papaya as a color balancer and pectin source to improve the texture of sheet jam. The aim of the research was to analyze the physical, chemical, and organoleptic properties of kalamansi orange sheet jam. Completely Randomized Design (CRD) with 1 (one) factor, namely the addition of kalamansi orange juice (10%, 20%, 30%, 40% and 50% and repeated 4 (four) times. The variables observed were physical changes, syneresis, total dissolved solids test, and shelf life. The data obtained was analyzed by the ANOVA test. The results showed that leaf jam with Calamansi orange juice had no significant effect on the overall sensory test. The best treatment in the study of kalamansi orange sheet jam was found in the addition of Kalamansi orange juice formulation F1 (10%) with a syneresis value of 0.003%; the level of damage to the kalamansi orange jam occurred on day 6 at F1 (10%), F2 (20%), F3 (30%) and F5 (50%) characterized by pale color, dry texture, hard and white grains appeared on the surface. and taste bland; total dissolved solids (TPT) of 34.6%ºbrix; and organoleptic with the panelist's preference level for kalamansi orange sheet jam of 5.64 (like slightly). Kalamansi orange has the potential to be developed into sheet jam preparations with good physical and organoleptic properties.

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.