Abstract
SUMMARYTwenty-one stocks of spring and •winter types of field bean were sown in April 1975 and 59 stocks of spring bean cv. Maris Bead were sown in March 1976, to investigate the relationship between seed germination and seedling emergence in the field. Laboratory germination percentage proved to be a very poor indicator of emergence in the field whereas the seed leachate conductivity test was a more useful guide. Even at recommended sowing rates low plant stands are shown to be a likely cause of yield loss and it is suggested that the conductivity test should be used to identify seed stocks of low vigour so that sowing rates of such stocks can be increased. It is recommended that the conductivity test be carried out as a useful adjunct to the standard laboratory germination test.
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