. The American fruit culturist. r the protection oforchards from this dire pest, and in some localities trees ofall ages and by the thousands have been uprooted and burneduntil at present in such regions the yellows has been checkedand peach-growing is restored to its former importance. There are many yellow peach trees that are so from lackof congenial soil, situation, and adequate food supply. Manure THE DISEASES OF FRUITS. 227 and fertilizers do much toward removing the starvation yel-lows; but such is not contagious. It goes without sayingthat profitable peach growing is a high art that on
. The American fruit culturist. r the protection oforchards from this dire pest, and in some localities trees ofall ages and by the thousands have been uprooted and burneduntil at present in such regions the yellows has been checkedand peach-growing is restored to its former importance. There are many yellow peach trees that are so from lackof congenial soil, situation, and adequate food supply. Manure THE DISEASES OF FRUITS. 227 and fertilizers do much toward removing the starvation yel-lows; but such is not contagious. It goes without sayingthat profitable peach growing is a high art that only the care-ful student of the subject is able to understand. When thegenuine yellows is suspected, appeal should be made at onceto all the many sources of information upon the subject, andeven then the orchard may need to be destroyed for the sakeof future crops of peaches there and elsewhere in the neigh-borhood. The Leaf Curl {Exoascus deformans Fcl.) is perhaps themost conspicuous of the well-established fungous diseases of. Pig. -Branch of Peach, showing the Leaf Curl. the peach. The presence of this enemy is quicky recognizedby the distortions it causes in the foliage, some of the leavesbecoming highly colored, yellow and red (see Fig. 286). Thecurl usually comes with the first leaves if it comes at all, andin the worst cases all the foliage is affected and largely fallsaway, as later leaves unfold. The fungus hibernates in the 2 2« THE DISEASES OF FRUITS. buds and young twigs, and its development evidently dependslargely upon the conditions of the weather during winter orspring, or both. It has been observed that a wet May is par-ticularly favorable for the development of the leaf curl, whilein other years, when the spring months are comparatively dry,the disease is almost absent. Remedies.—Spraying of the peach trees in winter with theBordeaux mixture has often had a remarkably good effect, asit prevented the disease from destroying the foliage and blast-ing the flow
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