Optimizing pesticide spraying in high density apple orchards in South Africa, using Venturia inaequalis as model pathogen. by Rebel, Philip

Subjects: “…Apple orchards -- South Africa…”
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Investigating the use of Marigolds (Tagetes spp.) and brassicaceous cover crops as a tool for the management of lesion nematodes (Pratylenchus spp.) in apple orchards by Fourie, Louis Welricht

Subjects: “…Apple orchards -- South Africa --Grabouw -- Western Cape…”
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