Fungi and fungicides; a practical manual, concerning the fungous diseases of cultivated plants and the means of preventing their ravages . yed until the next, isthe appearance of diseased, dwarfed growths upon thetrunk and limbs. These growths bear diminutive leaves,which are pale green, yellowish, reddish or white. Theyoften show a marked tendency to repeated branching,sometimes as many as four sets of branches being devel-oped within a few months. These growths may ariseeither from obscure buds on the trunk and main limbs,or from the ordinary winter buds. They may appear atany time during th
Fungi and fungicides; a practical manual, concerning the fungous diseases of cultivated plants and the means of preventing their ravages . yed until the next, isthe appearance of diseased, dwarfed growths upon thetrunk and limbs. These growths bear diminutive leaves,which are pale green, yellowish, reddish or white. Theyoften show a marked tendency to repeated branching,sometimes as many as four sets of branches being devel-oped within a few months. These growths may ariseeither from obscure buds on the trunk and main limbs,or from the ordinary winter buds. They may appear atany time during the season, from spring until late au-tumn. Often the winter buds push in October or No-vember, after the foliage has fallen, or even in Augustand September, wdiile it is still green and vigorous. ^ When attacked the tree is very often in a vigorous,healthy looking condition, and sometimes during the THE PEACH YELLOWS 71 whole of the first season there is no sign of disease be-yond the appearance of a few premature peaches, thefohage being fully grown and dark green, and the shootsin no way dwarfed or sickly. As already intimated, the. FIG. 37. YELLOWS TUFT. disease usually appears first in one limb or one side ofthe tree, but sometimes in all j^arts of the tree at once,or on opposite sides. No matter to how slight an extentthe tree is first diseased, it never recovers, but becomes 72 PUNGI AKB FUKGICJDES entirely diseased in the course of two seasons, or atmost; three. The limbs first attacked are badly diseased, thesecond year, their entire growth, shoots and foliage,being much dwarfed and. of a sickly green, tinged withyellow or reddish-brown. In course of two or three sea-sons the entire growth of the tree assumes this appear-ance, and is then a sufficient warrant for the commonname, such trees especially, when massed in orchards,being distinguishable at some distance b}^ their yellowor reddish-brown appearance, w^hich is in marked con-trast with the beautiful dark green of h
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpathoge, bookyear1896
