Controlling the curculio, brown-rot, and scab in the peach belt of Georgia . ldbe wise, therefore, for peach growers in the South to pick up all*• drops ? frequently and systematically making a special effort to getthe smallest, hard, dried-up fruits, as these are the ones most likely tobe infested. The picking up and destroying of drops also aids in thecontrol of brown-rot. since the fungus causing this disease is able to Control of the Curculio, etc., in Georgia. 13 live in and fruit upon the old mummies which become sources ofdistribution for this destructive disease. DISKING AS A CONTROL M
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Controlling the curculio, brown-rot, and scab in the peach belt of Georgia . ldbe wise, therefore, for peach growers in the South to pick up all*• drops ? frequently and systematically making a special effort to getthe smallest, hard, dried-up fruits, as these are the ones most likely tobe infested. The picking up and destroying of drops also aids in thecontrol of brown-rot. since the fungus causing this disease is able to Control of the Curculio, etc., in Georgia. 13 live in and fruit upon the old mummies which become sources ofdistribution for this destructive disease. DISKING AS A CONTROL MEASURE. After the larva or worm of the curculio has reached maturityin the peach, it eats its way out and enters the soil to pass the pupastage, which is the period of transformation from the larva to theadult or beetle. The worm, however, does not pass into the pupastage immediately after entering the soil, but remains in the larvastage for a few days until it can prepare a soil cell to protect it dur-ing the transformation. Upon the completion of this cell, which is. Fig. 9.—Using the extension disk for destruction of curculio pupae. merely a small cavity in the soil smoothed by the larva, the worm changes to the pupa, the helpless, inactive stage in the insects de-velopment. Frequent disking during this period with an extensiondisk (fig. 9), so that the soil can be stirred close to the tree trunks, destroys or breaks up many of the pupal cells, and since the insectis in a helpless state, another cell can not be prepared. The pres-sure and heat of the soil then cause the death of many pupae, inaddition to those killed directly by the disk or by exposure to theelements and predacious enemies. The time spent in the soil by the curculio during this period oftransformation averages about one month, and the pupal cells aremostly within 3 inches of the soil surface. Diskings for destruction 14 Department Circular 216, U. S. Dept. of Agriculture. of pupae should begin in the Sout