. The Book of gardening; a handbook of horticulture. Gardening; Floriculture. 1076 THE BOOK OF GARDENING. cleansing the house, and avoiding, if possible, seed from an infected area. Black Spot is a very well-marked disease. The common name gives a clue to its chief characteristic—the presence of dark- coloured spots. The disease usually manifests itself at the style end of the fruit. Plants so attacked should be burned, and the remainder be sprayed with sulphide of potassium (loz. to igal. of water). Many growers spray as a precautionary measure, and do not wait until the disease asserts itsel
. The Book of gardening; a handbook of horticulture. Gardening; Floriculture. 1076 THE BOOK OF GARDENING. cleansing the house, and avoiding, if possible, seed from an infected area. Black Spot is a very well-marked disease. The common name gives a clue to its chief characteristic—the presence of dark- coloured spots. The disease usually manifests itself at the style end of the fruit. Plants so attacked should be burned, and the remainder be sprayed with sulphide of potassium (loz. to igal. of water). Many growers spray as a precautionary measure, and do not wait until the disease asserts itself. The result is that Black Spot and Leaf-Rust iyCladosporiiim fulviim)^ the latter appearing as dark spots on the foliage, are nothing like so prevalent as formerly. Turnips. A rich, wxll-worked, and friable soil is desirable for the earliest sowing at the end of March or early in April, and a sheltered site should be selected for the first sowing; and in about three weeks another sowing may be made. Early Milan and Snowball are splendid varieties for sowing up to the beginning of ISIay; and for use from then to the end of July, Veitch's Red Globe, Model White, and Golden Ball are all of proved merit, the last two being specially valuable for exhi- bition. At the end of August, Chirk Castle will be a good variety to sow to stand the winter and supply Turnip greens in early spring ; while bulbs may Fig. 690. Turnip Flea drawn at any time if wanted. If Beetle. the Turnip-Fly, or Turnip-Flea {Fhyllo- treta nemoruni) (Fig. 690) prove troublesome, a dusting with soot early in the morning while the dew is on the plants will check this enemy and give the plants a chance to grow away from it. If Turnips are required during the winter in quantity the roots may be lifted, and, after the tops have been cut off, stored the same as advised for Beet, Carrots, &c. Vegetable Marrows. Being a trailing subject this vegetable is best grown on old rubbish or manure-heaps unchecked, but cutt
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