Varietal difference of growth response to soil acidity in soybean
1987
Lee, H.S. | Chung, B.Y. (Seoul National Univ., Suwon (Korea R.). Coll. of Agriculture)
To obtain basic information concerning the soybean cultivar differences of physiological and ecological responses to soil pH to select and breed stably higher yielding cultivars, and to improve cultural management of soil differing in pH, the responses of soybean plants in growth, grain yield, nodule formation and its activity, and major chemical compositions of soybean plants were investigated using six cultivars and two levels of soil pH 5 and 7 of the pot and field experimental soil in Suwon, 1985. Acidic soil condition suppressed overall vegetative growth of soybean plants and thereby decreased stem length, number of nodes, leaf area, dry weight of the plants, r1413oot activity, nodulation and nodule activity, the content of allantoin nitrogen, total nitrogen, phosphorus, calcium, and magnesium of the plants. Due to the such responses of soybean plants to the acid soil, grain yield also decreased along with less grains per p
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