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Active since
1989
P. J. van Rooyen is an author specializing in nematode sampling, nematode biology, and maize cultivation.
Publications per year
1989–1989
Endoparasitic nematodes in maize roots in the Western transvaal as related to soil texture and rainfall.
Elizabeth Margaretha Jordaan, Dirk De Waele, P. J. van Rooyen · PubMed · 1989 · 16 citations · Full text
Agriculture, Soil Sciences, Agricultural Entomology +14
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