Textbook on plant pests, plant diseases and their control
Hoffmann, G.M, Nienhaus, F, Poehling, H.-M, Schoenbeck, F, Weltzien, H.C, Wilbert, H
Year of Publication 1994
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Year of Publication 1994
Book
Some effects of composted organic materials on plant health
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Journal Article
Conference Proceeding
Species mixtures in cereals as a concept for nonchemical disease and pest management
Weltzien, H.C, Trankner, A
Published in Importance of biological agriculture in a world of diminishing resources : proc of the 5th IFOAM Int Scientific Conference at the Univ of Kassel (Germany), Aug 27-30, 1984 / H. Vogtmann, E. Boehncke, I. Fricke, eds (1986)
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Published in Importance of biological agriculture in a world of diminishing resources : proc of the 5th IFOAM Int Scientific Conference at the Univ of Kassel (Germany), Aug 27-30, 1984 / H. Vogtmann, E. Boehncke, I. Fricke, eds (1986)
Publication