Soybean Genetics Newsletter


Manganese deficiency of soybeans, Glycine max (L.) Merr., commonly oc-curs in southwestern Ontario. Observation of soybean fields indicated that cultivars differed in degree of Mn-deficiency symptoms. To test this obser-vation, 'Harosoy 63' and 'Harman' were grown in 3-replicate tests at six lo-cations in 1963; and, in 1964 and 1965, these cultivars were grown along with 'Hawkeye 63' and 'Lindarin 63' in 4-replicate tests at one location.