. Fruit diseases and how to treat them!. affecting either its leaves or fruit in themanner above described. This same fungous appears in an-other and very different form upon the Red Cedar, causing whatare popularly known as cedar apples. These apples duringApril and May become masses of gelatinous material usuallyirregular in outline, looking much like a mass of gelatine jelly 208 WE^ST VIRGINIA EJXPKRIMElNr STATION. of a bright straw or orange color. During the fall and winterthese showy ornaments existed as small chocolate colored galls,but with the advent of warm weather they assumed the f
. Fruit diseases and how to treat them!. affecting either its leaves or fruit in themanner above described. This same fungous appears in an-other and very different form upon the Red Cedar, causing whatare popularly known as cedar apples. These apples duringApril and May become masses of gelatinous material usuallyirregular in outline, looking much like a mass of gelatine jelly 208 WE^ST VIRGINIA EJXPKRIMElNr STATION. of a bright straw or orange color. During the fall and winterthese showy ornaments existed as small chocolate colored galls,but with the advent of warm weather they assumed the formabove described. In the mass of jelly-like tissue great numbersof reproductive bodies (spores) are produced; which when dryare carried by the wind to the apple leaves or growing fruits toproduce the .characteristic rust spots of Fig. 6. As has alreadybeen hinted the prevalence of the rust depends much upon thesort of apple. Its prevalence is also in proportion to the abun-dance of cedars in the vicinity of the orchard. The chief safe. Fig. 6—Rust on leaf and twig. i^RUi^r bisKASEls aistd how to treat them. 209 guards lie therefore, in avoiding or in eliminating the cedar andin selecting resistent varieties; as the sprays so far discov-ered as fungicides have little effect in checking the fact I have found this malady in sprayed orchards where thefoliage and fruits were free from scab and brown spot, indicateing that the sprays used had less influence in checking the rustthan in subduing the other troubles. Spot ot the Fruit. {Cladosporium carpophyhim Thm.)This trouble is familiar to peach growers, especially on latevarieties such as Hills Chili. Sooty spots appear usually on onecheek of the fruit and nearer the stem than the distal end. Thesespots are seldom more than one-eighth inch across, but when sev-eral coalesce the affected area may be large, the growth of thatportion checked and deep fissures often occur as shown in Fig. 7,^- a side view of w
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