382 Bulletin 164. 



the first week in January, using his regular milk and lime for- 

 mula. The next was the same treatment on the first of February. 

 They were again treated about the first of March, but instead of 

 milk we used dextrine. * * * As to results, — we could dis- 

 cover no difference in time of blossoming between the treated and 

 untreated trees. * * * We discovered one thing, however, 

 that we thought' remarkable. All of our trees were considerably 

 affected with curl-leaf, but we found these treated trees to be 

 almost absolutely free from it. At least one-half of these trees 

 have not shown a single diseased leaf up to the present time 

 (July 27) ; about one-half of them had one or two diseased leaves. 

 The adjoining trees on both sides and on each end of the treated 

 trees without exception showed many curled leaves, from 25 per 

 cent to 75 per cent of all of the leaves on the trees being affected. ' ' 



The above is very conclusive, even with a fungicide, dilute 

 whitewash, which we have not held in high esteem when used 

 alone. For this early treatment it has one of the special 

 advantages of Bordeaux mixture, that of adhering well. 



In the Year Book of the U. S. Dept. of Agriculture, 1897, 

 page no, there are given some noteworthy figures concerning 

 the gains which growers on the Pacific coast have enjo^^ed by fol- 

 lowing out certain lines of treatment suggested by the Depart- 

 ment. This report was not out until our experiments were 

 practically complete, and in it no statement is made of the time 

 when the applications were made. I have since learned, how- 

 ever, that special stress is laid upon the early spraying. The 

 results at other experiment stations, notably at Ohio, largely 

 confirm what has already been said concerning remedies. 



Special recommendations : — With our present knowledge of 

 peach leaf-curl, the following may be suggested : 



I St. Spray thoroughly with strong Bordeaux mixture just 

 previous to the swelling of the buds, late in March, or very early 

 in April seems desirable in this latitude. 



2d. Spray again with weaker Bordeaux as soon as the petals 

 of the flower have fallen, or after the work of the bees is over. 



3d. Spray again with weak Bordeaux when the first leaves 

 are just full grown, or at just about the time that the spores of 

 the fungus are developing. 



