Soybean Genetics Newsletter


Field experiments conducted on a silt loam soil with six culti-vars under four pH ranges (5.9-6.7, 5.7-6.5, 5.3-6.0 and 5.0-5.6) in-dicated significant tolerance of 'Bedford' and 'Forrest' under acid soil pH ranges. The two cultivars were superior to 'Bragg', 'Braxton', 'Co-237', and 'Tracy M' in 1981 and 1982 trials. However, lowering of pH to 4.6-5.4, 4.5-5.4, 4.1-5.1, and 3.8-4.5 resulted in nullified seed formation in all the cultivars.