農家ほ場調査により推測されるソラマメ種皮褐変障害の原因

概要

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We investigated the mineral contents of several parts of broad bean (Vicia faba L.) and the chemical properties of soils on farmers' fields to elucidate the causes for seed coat browning of broad bean. The browning lesions would be caused primarily by Ca deficiency. The incidence of affected pods, which contained browning seeds, in the fields was negatively correlated with the Ca contents of all parts of the plants. The Ca contents of the hull, seed coat and cotyledon of the affected pods were lower than those of healthy pods. The low degree of Ca saturation of the soils in these fields was one of the causes for Ca deficiency in the broad bean plants. The Ca contents of many parts of the plants in the fields were positively correlated with the degree of Ca saturation of the soils. Therefore, there was a negative correlation between the incidence of affected pods in the fields and the degree of Ca saturation of the soil.
社団法人日本土壌肥料学会の論文
2000-06-05