J. W. G. Geerligs

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2-Hydroxy-5-methyl-6-ethoxycarbonylpyrazolo(1,5-a)pyrimidine (PP), a conversion product of pyrazophos, shows considerable toxicity toUstilago maydis, when administered to this fungus in a solution at pH<5. Evidence was obtained thatU. maydis may convert pyrazophos in to PP, and that the latter compound is the toxic principle responsible for the action of(More)
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