36 LEAD ARSENATE. 



Experiment 3. Same as Experiment 1; no more severe. 



Experiment 4. Same as Experiment 2. 



Experiment 5. Fruit normal color (green); not injured from spraying. 



Experiments 6, 7, and 8. Same as No. 5. 



Experiments 9, 10, and 11. Fruit in good condition; normal color. 



Experiment 12 . Injury about the same as in Experiment 1 but not so severe; u 

 smaller per cent of injured fruit, probably not over 30. 



Experiment 13. Fruit deep red in color, as was all that sprayed with lead arsenate I 

 not over 10 per cent showed injured spots and these were not so large nor deep as irl 

 Experiment 12. 



Experiment 14. Injury practically the same as in Experiment 12. 



Experiment 15. Fruit not so red; injury about the same as Experiment 13. 



The presence of lime showed some beneficial effect by lessening the 

 injury to the fruit as well as to the foliage. The fruit on unsprayec 

 trees was still deep green in color and about one week behind thai 

 sprayed with lead arsenate as to maturity. All trees were in \ealtrry 

 looking condition aside from the fact that Experiments 1 to 4 and 12 

 to 15, inclusive, were not so thickly foliated, owing to previous drop- 

 ping of the leaves. The fruit on these trees, in addition to being a 

 deep red, was more fully matured, and ripened about a we.^k earliei 

 than that unsprayed. 



Plate III shows the trees on the unsprayed plot with normal 

 healthy foliage. Plate IV represents a tree in Experh lent 12 

 sprayed with lead arsenate and showing partial defoliation leaving 

 the fruit largely exposed. Most of the leaves on the end3 of the 

 branches came out after the spraying was done, thus masking to a 

 large extent the injury produced. 



NOTES MADE ON AUGUST 13 ON CONDITION OF FRUIT. 



These observations on the peach crop may be generalized. Experi- 

 ments 1 to 4, inclusive, and 12 to 15, inclusive, in which lead ai late 

 had been applied, showed about 50 per cent of injured fruit when no 

 lime was used and about 25 per cent injured when lime was applied. 

 That showing the worst injury was somewhat shriveled and usually 

 dropped before having fully matured. In other cases it showed a 

 dark shriveled spot, usually around the stem end, but frequently on 

 the upper side or on the small end. This condition is brought out in 

 fig. 1, which shows some of the most seriously injured fruit that 

 remained on the trees. The per cent of insect injury, as shown by 

 wormy fruit, was very small, in no case over 5 per cent of the total. 



Experiment 9, in which lead acetate was used, yielded more 

 perfect fruit than any of the other trees sprayed; 90 per cent of it 

 was sound, 80 per cent of which was of good size and practically 

 perfect, while 10 per cent showed insect injury. 



