. Control of watermelon anthracnose by spraying. Control of Watermelon Anthracnose by Spraying. 5 gasoline-power equipment is almost essential for successful work with watermelons, although if the acreage is small, 10 or 15 acres, it may be necessary for purposes of economy to use a hand pump. Growers in certain sections of Florida and in central Georgia have found that the outfits used for spraying citrus fruits, pecans, and peaches may be adapted for use with watermelon vines. Orchard apparatus, however, is rather heavy for use in sandy fields. Several firms manufacture light gasoline-power
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. Control of watermelon anthracnose by spraying. Control of Watermelon Anthracnose by Spraying. 5 gasoline-power equipment is almost essential for successful work with watermelons, although if the acreage is small, 10 or 15 acres, it may be necessary for purposes of economy to use a hand pump. Growers in certain sections of Florida and in central Georgia have found that the outfits used for spraying citrus fruits, pecans, and peaches may be adapted for use with watermelon vines. Orchard apparatus, however, is rather heavy for use in sandy fields. Several firms manufacture light gasoline-power outfits with the tanks mounted on two wheels, and these have many advantages for work with watermelons, particularly if stumps are abundant. (Figs. 3 and 4.) In buying an outfit, care should be taken to secure all the clearance possible between the ground and the bottom of the tank. Since Bordeaux mixture contains copper sulphate the pump should be lined with brass or porcelain.. Fig. 3.—Fining the spray tank in the field. This type of pump, in which the tank is mounted on two wheels, is manufactured by several companies. Such a machine is particularly well adapted for use where stumps are abundant. Time is saved by hauling the mixture to the field, so that the pump may be kept in continuous operation until the field is covered. A galvanized-iron bucket, like the one shown, should never be used for dipping Bordeaux mixture, as the mixture attacks iron. A wooden bucket should be used instead. EQUIP THE SPRAYER TO SUIT THE FIELD IN WHICH IT IS TO BE USED. The number and arrangement of leads of hose depend on the field in which they are to be used and the method of spraying. In gen- eral, the spray is applied by driving down a middle and spray- ing two or more rows on each side of the machine. (Fig. 5.) If the rows are 10 feet • apart and the vines are kept turned back throughout the season to give driveway in those middles that are to be used for this purpose, very little inj