Abstract
To compare their performance, 60 lines (30 indeterminate and 30 Semideterminate) of soybeans (Glycine max (L.) Merr.) from each of two crosses were grown in row spacings of 30 and 100 cm in 1972 and 1973. The narrow rows averaged 33% higher in seed yield than the wide rows. In one cross the Semideterminate and indeterminate lines were of equal maturity, and gave equal seed yields. In the other cross the indeterminates were higher yielding than the semideterminates, probably due to a later maturity and longer reproductive period. An expected yield advantage of the Semideterminate lines in narrow rows was not borne out by the data. Advantages of the Semideterminate lines were shorter plant height and less lodging.
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