Kecocokan pertumbuhan dan hasil beberapa varietas kedelai pada tanah bereaksi masam.
1989
Sutarto Ig.V. | Pasaribu D. | Somaatmadja S. | Mikoshiba H.
A large portion of the 32 million hectars of red-yellow podzolic soils in Indonesia has low pH, extremely low P and high exchangeable aluminum content that restrict their use for upland crop production. A high exchangeable aluminium in the soil may restrict the root development and in turn the water uptake and the nutrient absorption. A green house experiment was conducted at the Agronomy Department of Bogor Research Institute for Food Crops with the objectives to clarify the performance root development, growth and yield of soybean varieties on acid soil condition under different exchangeable aluminum. The experiment was conducted during 1985 dry season, using a split plot design with three replications. The main plot treatments were three soybean varieties and Sub-plot treatments were five exchangeable aluminum rates. The results indicated that aluminum saturation at 2.90 to 70.30 percent decreased parameters observed, i.e. the length of taproot, root dry weight, plant height, number of nodes, stem diameter, number of branch, a + b chlorophyll content, number of filled pods and yield. Root growth was correlated strongly and positively the number of filled pods and yield. Under 70.3 percent of aluminium saturation Orba variety was more tolerant than the other varieties. At the same level of aluminium saturation no yield was obtained from Galunggung and B-3035 promising line. Yield was significantly correlated with root dry weight, number of branches, a + b chlorophyll content, number of nodes, number of flowers, and number of filled pods. Among the three varieties, Orba was appeared as the most tolerant to the aluminium toxicity.
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