Bulletin of the Faculty of Agriculture, Shimane University

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Bulletin of the Faculty of Agriculture, Shimane University 12
1978-12-15 発行

収穫期のことなるイネの発芽を阻害するPCPの濃度

Concentrations of PCP inhibiting the Germination of Rice Seeds harvested in Different Seasons
Nagasawa, Sumio
Haruyama, Hiroshi
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Description
The problems of adjustment for a natural response rate C in probit analysis were fully discussed by Finney. He gave the maximum likelihood method for estimating the parameters of dosage-response relation. It is not unusual, however, that experimenters must compare the two dosage-response curves came from materials having natural response rates C_1 and C_2. In this case, minute modifications for some formulae shown by Finney are necessary to calculate the relative susceptibilities of testing organisms coming from different sources as mentioned above. As a numerical example, the procedure was illustrated by the experimental data comparing the inhibitory concentrations of PCP for the emergence of rice seeds harvested in different seasons.