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Report on the Work of the Phytopathological Service in the Year 1923

, : Report on the Work of the Phytopathological Service in the Year 1923. Verslag. & Meded. Plantenziektenk. Dienst, Wageningen, 34, 66

Injury to oats by Heterodera schachtii, Schm., was common, and, in one case, another Nematode, Tylenchus dipsaci, Kuhn (devastatrix, Kuhn), seemed to delay growth. Rye was attacked by the rose-beetle, Phyllopertha horticola, L., and the larvae of a species of Bibio injured the roots. Against Oscinella (Oscinis) frit, L., good results were obtained by sowing rye in November, by which month most of the larvae have pupated.

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