. Y\r,. 145.—Ccrcospora chrumicissa. i, diseased pcacli leaf; 2, tuft iif conidia, highly niaj:;. Cucumber and melon leaf blotch.— This destructive pest was first observed in , and for the three or four following years it simply ran riot, killing off whole houses of cucumbers within a few days. It was almost entirely confined to the extensive establishments around London, the produce of which mostly found its way to Covent Garden market. At the present day the disease has practically disappeared. This j epidemic may in a sense be looked upon as an artificial creation, inasmuch as it can o
. Y\r,. 145.—Ccrcospora chrumicissa. i, diseased pcacli leaf; 2, tuft iif conidia, highly niaj:;. Cucumber and melon leaf blotch.— This destructive pest was first observed in , and for the three or four following years it simply ran riot, killing off whole houses of cucumbers within a few days. It was almost entirely confined to the extensive establishments around London, the produce of which mostly found its way to Covent Garden market. At the present day the disease has practically disappeared. This j epidemic may in a sense be looked upon as an artificial creation, inasmuch as it can only extend at a rapid rate under the modern conditions of culture, namely, an atmosphere
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Keywords: ., bookpublishernewyorkmacmillan, booksubjectplantdis, bookyear1910
