570 Missouri Agricultural Report. 



curculio. An application just as the husks are about shed, one ten 

 days later, the third four to six weeks before picking time. Arsenate 

 of lead should be used for the first application. Arsenate of lead 

 and self-boiled lime-sulphur for the third. Sulphur may be had 

 from several chemical companies in a condition that requires only 

 the addition of water to make it ready for use and which eliminates 

 the laborious task of preparing the self-boiled mixture. 



PEACH SCAB. 



This is another fungous trouble which during moist seasons 

 seriously affects the crop of unsprayed peach orchards. It produces 



small, black spots on the skin of 

 the fruit. The spots may be so 

 numerous as to run together, 

 covering the entire side of a 

 fruit and destroying the quality 

 of its flesh. The greatest dam- 

 age is done by rendering the 

 fruit unsightly and greatly re- 

 ducing its market value, al- 

 though occasionally the disease 

 occurs with sufficient severity 

 to cause serious cracking. 

 Peach scab. (From Scott.) ' dwarfing and premature drop- 

 ping of the fruit. This trouble, 

 the same as brown rot, may be largely controlled by the use of some 

 form of sulphur in the two early sprayings for curculio, although 

 some seasons an additional one may be needed three or four weeks 

 later. 



PEACH LEAF CURL. 



Peach leaf curl is practically the only fungous disease occur- 

 ring in orchards of the middle west for which the spraying should 

 be done while the trees are dormant. It affects the foliage of 

 peach trees very seriously some seasons, causing the leaves to be- 

 come thickened and crumpled and to drop prematurely. The 

 fungus causing the disease begins to develop at about the time the 

 buds are beginning to swell. A single application of Bordeaux 

 mixture or lime-sulphur made just previous to this time will effect 

 almost a complete control. 



