Research Notes : United States : Evaluation of soybean germplasm for stress tolerance biological efficiency : To evaluate soybean germplasm and cultivars for stress tolerance toward : Soil Acidity

Date
1986-04-01
Authors
Tewari, S.
Igbokwe, P.
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Iowa State University Digital Repository
Abstract

Three years of field trials (1981-83) with six cultivars of soybeans ('Bed-ford', 'Bragg', 'Braxton', C-237, 'Forrest', and 'Tracy M') conducted on the Memphis silt loam soil showed greater resistance to low pH (5.0-5.5) for Forrest and Bedford as compared to the other cultivars. However, at pHs lower than 5.0, seed formation of all the cultivars was adversely affected, espe-cially under moisture stresses. Greenhouse and laboratory studies during the same time period indicated higher P absorption for Forrest and Bedford at pH 5.0 to 5.5

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