14 PARTS GREEN SPRAYING EXPERIMENTS. 



havoc, and as the injury was as great on the trees sprayed with the 

 weaker as with the stronger solutions and several trees not sprayed at 

 all were affected to nearly as great an extent as those sprayed, it was 

 thought best to exclude the pear trees from the experiment. 



The peaches were now considerably damaged, though how much of 

 this was due to the rather dry weather of the previous month, which 

 doubtless had a certain amount of influence, was difficult to determine. 

 The notes taken at this time are given below : 



PEACHES (WITHOUT LIME). 



No. 1. A few leaves have black spots; about 35 per cent turning yellow and 

 dropping. 



No. 2. Same. 



No. 3. About 5 per cent of leaves more or less scorched; half the leaves dropping. 



No. 4. Same. 



No. 5. About 10 per cent of the leaves are scorched ; leaves are yellow and as many 

 on the ground as on the trees. 



No. 6. Not burned as badly as the others and fewer leaves dropping; a very vigor- 

 ous tree. 



PEACHES (WITH LIME). 



No. 1. No leaves burned; about 5 per cent dropping. 



No. 2. Same, except that about 10 per cent are dropping. 



No. 3. Very few leaves burned; leaves dropping considerably. 



No. 4. Injury a little more pronounced than on No. 3. 



No. 5. Practically the same as No. 4. 



No. 6. About 5 per cent of leaves burned and dropping; almost the same as Nos. 4 

 and 5. 



At this time the plum leaves were perforated to some extent by the 

 plum leaf shot-hole fungus (Septoria cerasina), but also showed con- 

 siderable injury from the spray. The notes made on this date are as 

 follows: 



PLUMS (WITHOUT LIME). 



No. 1. Very few leaves burned. 



2. Probably 5 per cent of leaves burned. 



3. Same as No. 1. 



4. Large percentage of leaves burned at edges. 



5. Large percentage of leaves burned at edges. 



6. Large percentage of leaves burned at edges. 



PLUMS (WITH LIME). 



No. 1. Few leaves slightly burned; small tree. 



2. No injury. 



3. No injury. 



4. Few leaves burned. 



5. Few leaves burned. 



6. Few leaves burned. 



After twenty da}^s another examination was made. The interven- 

 ing wet weather was evidently of great benefit to the orchard, as the 



