. Controlling the curculis, brown rot and scab in the peach belt of Georgia. 6 Department Circular 216, U. S. Dept. of Agriculture. had been multiplying for several years. During these years some growers failed to spray, and the careless spraying of others was worthless. Very often the entire spraying crew rode on the tank (fig. 2) and the team was kept walking from one end of the orchard to the other, no stops being made as the trees were passed. In many cases the spraying was left entirely in the hands of incompetent labor with no supervision. With such careless control measures the severe c
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. Controlling the curculis, brown rot and scab in the peach belt of Georgia. 6 Department Circular 216, U. S. Dept. of Agriculture. had been multiplying for several years. During these years some growers failed to spray, and the careless spraying of others was worthless. Very often the entire spraying crew rode on the tank (fig. 2) and the team was kept walking from one end of the orchard to the other, no stops being made as the trees were passed. In many cases the spraying was left entirely in the hands of incompetent labor with no supervision. With such careless control measures the severe curculio damage during 1919 and 1920 was a natural result. CHARACTER OF CURCULIO INJURY AND ITS RELATION TO BROWN-ROT. The plum curculio injures the peach by puncturing it for feeding or egg-laying. The feeding puncture very often scars the fruit, and. Fig. 2.—The kind of spraying responsible for the severe curculio damage in 1920. the larva that hatches from the egg deposited in an egg puncture lives within the fruit until it is practically full grown and makes the fruit unfit for market. The curculio not only damages the peach directly, but the rupture of the skin for feeding or oviposition furnishes a place for brown-rot to enter; in fact, a very large percentage of the brown-rot infections in the peach belt of Georgia are caused in this way. A heavy cur- culio infestation, therefore, facilitates the establishment of brown- rot infections. A majority of the peaches that are punctured by the curculio soon after the fruit sets fall to the ground before the stone begins to. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Snapp, Oliver I. [from old catalog]. Wash.