Response of soybeans of different maturity group to sowing date in tropical locations in Puerto Rico
1991
Cianzio, S.R. (Iowa State University, Iowa (USA). Department of Agronomy) | Schroder, E.C. | Ramirez, C.T.
Twelve high-yielding soybean cultivars were planted in Puerto Rico at two locations during two years in bi-monthly plantings, beginning January each year. Cultivars were assigned to four maturity classes (MC), defined on the basis of average number of days needed to reach stage R8 (full maturity). Flowering and maturity dates, plant height at maturity, seed yield and protein and at percentages, were recorded. MC and planting month significantly affected days to maturity, seed yield and protein percentage; planting month affected plant height. Plantings during March and May had the highest seed yields. In crop rotation sequences, soybeans of all maturity groups would yield their best if planted at this time of year.
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