Abstract
The high demand for soybeans cannot yet be met by domestic production. Thus, a way to increase soybean production is necessary, one of which is to use liquid organic fertilizer derived from landfill leachate. This study aimed to examine the application method of liquid organic fertilizer (LOF) from landfill leachate to the soil and leaves and to determine the concentration giving the best growth and yield of soybean plants. The study was a field-research arranged in a completely randomized design (CRD) consisting of six treatments and four replications, which was carried out in a greenhouse. The treatments include A (0 LOF/L water), B (20 ml LOF/L water), C (30 ml LOF/L water, D (40 ml LOF/L water), E (50 ml LOF/L water) and F (60 ml LOF/L water). The liquid organic fertilizer was applied through the soil and leaves at a dose according to the treatments. The results showed that the application of liquid organic fertilizer from landfill leachate was better applied to the soil than to the leaves. The liquid organic fertilizer given had a significant effect on the leaf area (cm2), crop weight (g), and plant seed weight (g), but not on the plant height (cm) and stem diameter (cm). Liquid organic fertilizer application is better given to the soil than to the leaves based on the independent T test. The liquid organic fertilizer from landfill leachate at a concentration of 40 ml/L of water had the best effect on the growth and yield of soybean plants.
Highlights
Soybean is consumed by Indonesian people as to improve the level of soil fertility so that plants a cheap source of protein to meet their nutritional get enough nutrients to improve the quality and needs
The best application and leaves has advantages and disadvantages, but method of LOF from landfill leachate along with there is no information related to the best way to the exact dose for soybean plants has not been provide LOF from landfill leachate
Likesoybean plants given liquid fertilizer through soil wise, the application of LOF through the soil (Table (Tabel 2) are higher than those given through leaves 2) significantly increased crop weight compared to (Table 1)
Summary
Soybean is consumed by Indonesian people as to improve the level of soil fertility so that plants a cheap source of protein to meet their nutritional get enough nutrients to improve the quality and needs. There are many ways to increase soybean pro- containing more than one element This fertilizer duction, one of which is fertilization using liquid has advantages as it provides available nutrients organic fertilizer. The application of liquid organic fertilizer to in the soil, increase potassium availability and be the soil has several benefits. The best application and leaves has advantages and disadvantages, but method of LOF from landfill leachate along with there is no information related to the best way to the exact dose for soybean plants has not been provide LOF from landfill leachate.
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