. Annual report of the Missouri State Board of Agriculture. Missouri. State Board of Agriculture; Agriculture -- Missouri. Repo7't of Missouri Farmers' Week. 571 In orchards that are infested with San Jose scale, lime-sulphur should, of course, be used in preference to Bordeaux mixture, as the application required to control the leaf curl will also control the scale. In fact, orchards known to be infested with San Jose scale will need no special treatment for leaf curl if the spraying for scale is deferred until shortly before the time the buds burst. CODLING MOTH. Codling moth is the most com
. Annual report of the Missouri State Board of Agriculture. Missouri. State Board of Agriculture; Agriculture -- Missouri. Repo7't of Missouri Farmers' Week. 571 In orchards that are infested with San Jose scale, lime-sulphur should, of course, be used in preference to Bordeaux mixture, as the application required to control the leaf curl will also control the scale. In fact, orchards known to be infested with San Jose scale will need no special treatment for leaf curl if the spraying for scale is deferred until shortly before the time the buds burst. CODLING MOTH. Codling moth is the most common pest that infests the apple orchards of the middle west. There is probably no orchard that is free from it, and there is no other insect or disease that causes so great a loss annually to the apple crop as does this one. Unsprayed orchards will usually run from forty to seventy-five per cent wormy fruit in practically any section of Missouri, while sprayed orchards should run. ninety per cent or better of worm- free fruit, provided the ap- plications have been made at the right time and the work well done. The moths appear in the spring about blooming time or a little later and deposit their eggs on the foliage near the fruit cluster. After a num- ber of days the e^g hatches and the young worm begins its search for the fruit. When the worm becomes full grown, after having entered the apple, it leaves the fruit and forms a silken cocoon under the scales of bark on the trees or wherever else it may find a suitable shelter and then in a few days it changes to a pupa. It spends about the same length of time in this condition that it spends in the apple and from the pupa the adult moth of the next brood emerges. The total time required for the insect to pass through the entire life cycle from moth to moth ranges from forty-five to fifty days. There are two broods a year, besides generally a partial third, and sometimes a full third brood in Mis- souri, particularly the southern
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