Hammett, K.R.W. 1975: Patterns in the numbers of air-borne conidia of apple powdery mildew, Podosphaera leucotricha (Ell. and Ev.) Salm., and their relevance to control measures. New Zealand Journal of Experimental Agriculture 3: 267-270.
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Hammett, K.R.W. 1975: Patterns in the numbers of air-borne conidia of apple powdery mildew, Podosphaera leucotricha (Ell. and Ev.) Salm., and their relevance to control measures. New Zealand Journal of Experimental Agriculture 3: 267-270.