. Cirtus fruits under irragation. Citrus fruits; Fruit-culture. 8 PTTI \_-' 1 « « PTTQ T7D1'I'I V v^ V » X J V V. A 1 ? > 8 on the fungus causing seal), v^ucli growth can ])c ])runed out and destroyed, which will help to ])revent a recurrence of the disease. All sour orange or worthless lemon trees in a grapefruit grove should be cut out or budded over, as thev are almost always affected with scab and spread the disease to the grapefruit trees or to other varieties of citrus that are susce])tible to it. All scabbed sour oranges or lemons should be picked u]) and destroyed. In very moist sit
. Cirtus fruits under irragation. Citrus fruits; Fruit-culture. 8 PTTI \_-' 1 « « PTTQ T7D1'I'I V v^ V » X J V V. A 1 ? > 8 on the fungus causing seal), v^ucli growth can ])c ])runed out and destroyed, which will help to ])revent a recurrence of the disease. All sour orange or worthless lemon trees in a grapefruit grove should be cut out or budded over, as thev are almost always affected with scab and spread the disease to the grapefruit trees or to other varieties of citrus that are susce])tible to it. All scabbed sour oranges or lemons should be picked u]) and destroyed. In very moist situations where scab is severe from \ear to year the fruit may be i)rotccted by si)raying with any of the commonly used fungicides, as lime-sulphur solution, ammo- niacal coi)])cr carbonate, or Bordeaux mixture. The lime-sul- ])hur is usually ])referred, since it is also of considerable value in killing scale insects iivaX The first s]:ray should be a])])lied soon after the ])etals fall and a second a])])lication should be made from 2 to 4 weeks later; a tl;ir(l s])raying will not often l)e neces- sary. The tissue as it Ijccomes older be- comes entireh' im- nume to further at- tack of the fungus. In moister sections where parasitic fungi are ])resent and are efficient agents in controlling scale insects and the white flies, the use of fungicides is often followed by a rapid increase of these insects, due to the killing of the i^arasitic fungi. 9. Melanose.—A disease of fungus origin known as melanosc is frequently found on the fruit, lea\'es, and young stems of all varieties of citms trees in Florida. It is ])erha])S most noticeable on the grapefruit because of the smoothness of the skin of the nonnal grapefruit. The disease was first noticed in Florida in 1892. It has since been reported in Australia, Porto Rico, and iMgeria. It ia not known to occur in Fig. IN GULF-COAST STATES 9 Melanose manifests itsc>If as a sui)erheial marking on the surface of
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