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The experiment was conducted in the crop rotation of winter wheat, maize, spring barley, and winter rapeseed in the Albic Retisol from 2012 to 2019. During the experiment, crop by-products were left in the field annually as a common background for each treatment. Before the beginning of the experiment in 2011, dolomite lime was applied at three different doses based on the hydrolytic acidity (Hh) of the soil. Recommended fertiliser doses were applied to the crops with the average annual application of N112P36K87 per unit area. The experiment included the following treatments: 1) without fertilisers, when only crop by-products were incorporated into the soil (control), 2) N112P36K87, 3) NPK + CaMg(CO3)2 (0.5 Hh), 4) NPK + CaMg(CO3)2 (1.0 Hh), and 5) NPK + CaMg(CO3)2 (1.5 Hh). Analysis of crop yield and the phosphorus (P) uptake by plant parts allowed to determine the level of P return with crop by-products using the Partial Nutrient Balance Intensity (PNBI) index. In the experiment, a negative PNBI was observed, when only crop by-products were incorporated into the soil (control treatment) or removed from the field, and all other treatments showed positive indices. The PNBI index increased by 1.7-2.8 times compared to the treatment, when by-products were removed. This result suggests that returning of crop by-products to the soil can be an alternative source of phosphorus. The results of the experiment determined the accumulation of total phosphorus (Ptot) and changes in the distribution of phosphorus due to the addition of NPK and CaMg(CO3)2 together with the by-products returned to the soil. Significant increases in organic (Porg), inorganic (Pinorg), and available (Pavail) P content indicate the accumulation of both phosphorus reserves and its available forms in acid soil. The use of mineral fertilisers and dolomite lime in combination with crop by-products is an effective approach to improve crop productivity and phosphate level in the soil. [ABSTRACT FROM AUTHOR]

Sorghum is a potential crop as feed forage. The objective of the research was to obtain optimum dose of liming to improve the growth and productivity of sorghum (Sorghum bicolor (L.) Moench) biomass as feed forage. A completely randomized design with 4 treatments and 4 replications were applied for the research. The treatments were doses of dolomite lime addition i.e., 1) SD0 (dolomite lime addition at a dose of 0 ton/ha) as a control, 2) SD1 (dolomite lime addition at a dose of 1 ton/ha), 3) SD2 (dolomite lime addition at a dose of 2 ton/ha), and 4) SD3 (dolomite lime addition at a dose of 3 ton/ha). The result shows that supplementation of dolomite lime at doses of 2‒3 tons ha-1 can increase soil pH after a week of incubation. The dolomite lime addition at a dose of 3 tons ha-1 significantly increases (P<0.05) the plant height (2 weeks after planting) and the number of leaves from a week after planting until the end of the research (10 weeks after planting). In addition, this dose of dolomite addition (3 tons/ha) can increase fresh biomass productivity as well as dry biomass compared to control (SD0). In conclusion, supplementation of dolomite lime at a dose of 3 tons ha-1 was effective to increase the pH value of soil, plant height, leaves number, as well as fresh and dry biomass of sorghum plant. In addition, this dose of dolomite lime produces better green color of sorghum plant leaf compared to without liming. [ABSTRACT FROM AUTHOR]

Red chili is one of the plants that are widely cultivated in Indonesia because of its high economic value. However, chili production in Indonesia has not been able to meet the needs. The low productivity of chili is caused by the growth of spoilage microorganisms along with the physiological changes of the product during post-harvest. This study aims to determine the effect of concentration and duration of beeswax immersion on the shelf life of chili (Capsicum annum L.) with the addition of galangal for anthracnose resistance. This research was conducted at the Horticulture Laboratory, Department of Agrotechnology, Faculty of Agriculture, Syiah Kuala University Darussalam Banda Aceh from January to February 2022. This study used a Factorial Completely Randomized Design (CRD). The first factor is the concentration of beeswax with the addition of 10% galangal extract at each concentration and the second factor is the length of immersion of beeswax, with 3 replications. The results showed that giving beeswax at a concentration of 4% and 6% with the addition of galangal extract could maintain weight loss, moisture content, vitamin C, intensity of disease attack and had the highest value on organoleptic tests on scent. [ABSTRACT FROM AUTHOR]

The productivity of rice plants in swamps can be increased by adding dolomite lime. The addition of dolomite lime can reduce soil acidity. This study aims to determine the increase in productivity of rice plants in swamps with the addition of dolomite lime. The research was conducted from September to December 2021 at the Sekap Bumi Farmer's Group, Padang Tambak Village, Pino District - South Bengkulu. This study uses a package of rice cultivation in swampland Treatment 1 land added 500 kg of dolomite lime and treatment 2 did not add dolomite lime. Data analysis was done descriptively. The data collected is the productivity of rice yields in each treatment. The results showed that the application of dolomite lime can increase rice productivity in swamps by about 10%. Therefore, farmers are advised to provide dolomite lime when cultivating rice in swamps. [ABSTRACT FROM AUTHOR]