Response of two soybean varieties to the application of organic fertilizers in saturated soil culture systems
2011
Aziz, S.S. | Melati, M. | Ramadhani, E., Bogor Agricultural Univ., JI. Meranti, Kampus IPB Darmaga, Bogor 16680 (Indonesia). Dept. of Agronomy and Horticulture
Saturated Soil Culture (SSC) is a technology that gives water permanently, maintain, and keeps its death constantly (+ or - 5 cm under soil surface), and makes soil layer in saturated condition cultivation. This technique has been successfully used to increase soybean productivity. SSC can be used in the area where the water is available but it can also be used in the marginal land such as tidal swamp. Tidal swamp is one of the potential ecosystems for future soybean production but it is hampered by low soil pH caused by pyrite content. Organic matter and SSC may be used to overcome the problem. Farmers can use on-farm inputs that are normally available at the production site. An organic farming system may be able to ensure food security at the local level because continuity of plant production is possible. This study was conducted to investigate the response of two soybean varieties to different types of organic manure in Saturated Soil Culture. The experiment was carried out at IPB experimental station, Bogor, Indonesia, in December 2009-July 2010. Split plot design was used with types of organic fertilizer as the main plot (poultry manure, Centrosema pubescens, and Tithonia diversifolia) and soybean varieties as the subplot (anjasmoro and wilis). The results showed that the application of the type of organic matter gave similar soybean production (1.71, 1.63 and 1.73 t/ha respectively for poultry manure, Centrosema pubescens, and Tithonia deiversifolia). Wilis had a significantly higher vegetative characteristics and production (1.78 t/ha) than anjasmoro (1.61 t/ha).
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