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RADISH

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Originally appearing in Volume V22, Page 807 of the 1911 Encyclopedia Britannica.
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RADISH , Raphanus sativus (nat. See also:

order See also:Cruciferae), in See also:botany, a fleshy-rooted See also:annual, unknown in the See also:wild See also:state. Some varieties of the wild radish, R. Raphanistrum, however, met with on the Mediterranean coasts, come so near to it as to suggest that it may possibly be a cultivated See also:race of the same See also:species. It is very popular as a raw See also:salad. There are-See also:RADIUM 807 two See also:principal forms, the spindle-rooted and the See also:turnip-rooted. The radish succeeds in any well-worked not too heavy See also:garden See also:soil, but requires a warm, sheltered situation. The See also:seed is generally sown broadcast, in beds 4 to 5 ft. wide, with alleys between, the beds requiring to be netted over to protect them from birds. The earliest See also:crop may be sown about the See also:middle of See also:December, the seed-beds being at once covered with See also:litter, which should not be removed till the See also:plants come up, and then only in the daytime, and when there is no See also:frost. If the crop succeeds, which depends on the state of the See also:weather, it will be in use about the beginning of See also:March. Another See also:sowing may be made in See also:January, a third See also:early in See also:February, if the See also:season is a favourable one, and still another towards the end of February, from which See also:time till See also:October a small sowing should be made every fortnight or three See also:weeks in See also:spring, and rather more frequently during summer. About the end of October, and again in See also:November, a See also:late sowing may be made on a See also:south border or See also:bank, the plants being protected in severe weather with litter or mats. The See also:winter radishes, which grow to a large See also:size, should be sown in the beginning of See also:July and in See also:August, in drills from 6 to 9 in. apart, the plants being thinned out to 5 or 6 in. in the See also:row.

The roots become See also:

fit for use during the autumn. For winter use they should be taken up before severe frost sets in, and stored in dry See also:sand. Radishes, like other fleshy roots, are attacked by See also:insects, the most dangerous being the larvae of several species of See also:fly, especially the radish fly (Anthomyia radicum). The most effectual means of destroying these is by watering the plants with a dilute See also:solution of carbolic See also:acid, or much diluted See also:gas-See also:water; or gas-See also:lime may be sprinkled along the rows. Forcing.—To obtain early radishes a sowing in the See also:British Isles should be made about the beginning of November, and continued fortnightly till the middle or end of February; the crop will generally be fit for use about six weeks after sowing. The seed should be sown in See also:light See also:rich soil, 8 or 9 in. thick, on a moderate hotbed, or in a See also:pit with a temperature of from 55° to 65°. See also:Gentle waterings must be given, and See also:air admitted at every favourable opportunity; but the sashes must be protected at See also:night and in frosty weather with See also:straw mats or other materials. Some of these crops are often grown with forced potatoes. The best forcing sorts are See also:Wood's early See also:frame, and the early See also:rose globe, early See also:dwarf-See also:top See also:scarlet turnip, and early dwarf-top See also:white turnip. Those best suited for See also:general cultivation are the following: Spindle-rooted.—See also:Long scarlet, including the sub-varieties scarlet See also:short-top, early frame scarlet, and Wood's early frame; long scarlet short-top, best for general crop. Turnip-rooted.—Early rose globe-shaped, the earliest of all; early dwarf-top scarlet turnip, and early dwarf-top white turnip; earliest See also:Erfurt scarlet, and early white short-leaved, both very early sorts; See also:French breakfast, See also:olive-shaped; red turnip and white turnip, for summer crops.- Winter sorts.—See also:Black See also:Spanish, white See also:Chinese, Californian See also:mammoth.

End of Article: RADISH

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RADIUM (from Lat. radius, ray)