Factors which affect the growth of grain legumes on a solonized brown soil, 2. Genotypic responses to soil chemical factors
1991
Attwell, B.J. (Commonwealth Scientific and Industrial Research Organisation, Wembley (Australia). Dryland Crops and Soils Research Unit)
Lupinus angustifolius cvv. Yandee, 75-258 and P22872, and L. pilosus cv. P20957 and Dundale field peas were grown in the glasshouse in sieved solonized brown soil taken from sequentially deeper zones in the B horizon of the natural profile. The pH of the samples increased with depth in the profile, as did concentrations of sodium and chlorine. Grown in the deepest subsoil, L. angustifolius, but not the other species, suffered severe (75 percent) inhibition of root and shoot growth, had severe chlorosis in the expanding tissue and necrosis of the oldest leaflets. Expanded leaflets of L. angustifolius had high concentrations of sodium, chloride, manganese and zinc, and low concentrations of iron and copper. It is concluded that the poor adaptation of L. angustifolius to this soil is attributable to adverse responses to chemical factors.
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