Diseases of cultivated plants and Diseases of cultivated plants and trees diseasesofcultiv00massuoft Year: [1910?] MYXOGASTRES 525 alkali is decidedly detrimental to its development, and as the use of acid manures is very general at the present day, it will be seen that much more land is rendered favourable for the development of Plasmodiophora than in bygone times. Lime is the best and most practical preventive of finger- *«& Fig. 156.—Plasmodiophora brassicae, causing finger-and-toe of root of Brussels-sprout. and-toe known; from five to seven tons per acre, to be applied in the autumn,
Diseases of cultivated plants and Diseases of cultivated plants and trees diseasesofcultiv00massuoft Year: [1910?] MYXOGASTRES 525 alkali is decidedly detrimental to its development, and as the use of acid manures is very general at the present day, it will be seen that much more land is rendered favourable for the development of Plasmodiophora than in bygone times. Lime is the best and most practical preventive of finger- *«& Fig. 156.—Plasmodiophora brassicae, causing finger-and-toe of root of Brussels-sprout. and-toe known; from five to seven tons per acre, to be applied in the autumn, either six months or eighteen months before the turnips are sown. A second method, also recom- mended, is to apply the lime immediately after a diseased crop of turnips is removed; about two tons will suffice if it is spread evenly over the land. Such a dressing will produce no visible efiTect on finger-and-toe until the next crop of turnips is grown, but it may prove to be of value to interven- ing crops. It is important to bear in mind that plants can, as a rule.
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