The new rhubarb culture; a complete guide to dark forcing and field culture, how to prepare and use rhubarb . bonate of copper mixturewould probably check or prevent the spotting and thussomewhat prolong the growing season. But growersassume that the blight comes too late to do much harmto the next years crop, and spraying is not attempted. HINTS AND HELPS. 121 In several of the large rhubarb fields of Long Island,another form of blight or similar disease has beennoticed, and is tlie canse of some nneasiness in that lo-cality. Tliis blight causes a yellow appearance of theleaves, and a somewha
The new rhubarb culture; a complete guide to dark forcing and field culture, how to prepare and use rhubarb . bonate of copper mixturewould probably check or prevent the spotting and thussomewhat prolong the growing season. But growersassume that the blight comes too late to do much harmto the next years crop, and spraying is not attempted. HINTS AND HELPS. 121 In several of the large rhubarb fields of Long Island,another form of blight or similar disease has beennoticed, and is tlie canse of some nneasiness in that lo-cality. Tliis blight causes a yellow appearance of theleaves, and a somewhat stunted growth. It appears muchearlier in the season than the ordinary blight whichattends the dying down of the foliage in appears mostly on hills which have been set threeyears or more, and the effect is to seriously lessen thevigor and productiveness. One of the New York ex-periment stations is now engaged in a study of thisdisease. Culture of Medicinal Rhuliarh.—Various attemptshave been made to raise the medicinal rhubarb in theUnited States, and there is every reason to suppose the. Plant of the Medicinal Rhubarb. plant will thrive and yield a first quality product, whengrown in a mild climate. It does not seem to succeedtoo far north. When on trial at the Massachusetts ex-periment station it did not appear to thrive or to giveany promise of profitable growth and the plants were re-moved. 122 thp: new rhubarb culture. The medicinal .species is grown in the same way asthe varieties cultivated for stalks. In field culture, alight plow furi-ow should Ix^ nuide on each side of therows, thus covering the crown buds of the plants witha layer of soil, which will form a ridge to throw off thewater and afford winter protection. In spring, thisridge will be smoothed down with a light harrow. Theroots will 1)e large enough for removal at the end offour years growth, although it is claimed that a furtliei*growth of one or two years increases their medicinalvalue. The
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