. [Fruit culture]. is still in doubt. Allthree diseases are apparently similar in character, yet they havesome distinct differences. They are equally destructive, anda tree is worthless after it is once attacked by any one of thethree diseases. 8. Browii Rot.—The fungous disease known as brownrot attacks the fruit of the peach, the plum, and the cherry,causing decay. It is most severe in moist, himiid regions, §10 PEACH CULTURE 9 where it often causes a complete loss of the fruit crop. In thecase of the peach, the stage usually noticed by the casualobserver is that illustrated, in Fig. 9; peac
. [Fruit culture]. is still in doubt. Allthree diseases are apparently similar in character, yet they havesome distinct differences. They are equally destructive, anda tree is worthless after it is once attacked by any one of thethree diseases. 8. Browii Rot.—The fungous disease known as brownrot attacks the fruit of the peach, the plum, and the cherry,causing decay. It is most severe in moist, himiid regions, §10 PEACH CULTURE 9 where it often causes a complete loss of the fruit crop. In thecase of the peach, the stage usually noticed by the casualobserver is that illustrated, in Fig. 9; peaches affected with thedisease will, if they remain on the tree long enough, assume thisappearance at ripening time. Often, however, the fruit decayswhen it is small and green. When serious rotting of the fruitoccurs, the twigs andleaves also are frequentlykilled. A number of thepeaches that decay onthe trees at ripening timedry and cling to thebranches during the dor-mant season. The ap-pearance of these dried p. Fig. 9 peaches, usually spoken of as mummified peaches, is illustrated in Fig. 10. A close examination of mummified fruits will disclose the fact that they are covered with a brown, powdery substance. This powder consists of brown-rot spores. The spores pass the winter on mummified fruit and also in the crevices of the bark, and are distributed in the spring to the leaves, blossoms, and young fruit. From this statement it may readily be deduced that all mummified peaches should be destroyed. Fig. 10 10 PEACH CULTURE §10 If hot, moist weather conditions prevail at blossoming time,brown rot may destroy some of the blossoms. The blossomskilled by the disease may be readily distinguished, as they clingto the tree after becoming dry and are covered with , when blossoms are killed by brown rot, there is an exuda-tion of gum at the base of each, and sometimes a cankered spoton the twig. One way in which brown-rot spores are spread is by theplum curculio. This in
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Keywords: ., bookcentury1900, bookdecad, booksubjectfruitculture, bookyear1912
