ONE-SPRAY METHOD FOB CODLING MOTH, ETC. 



125 



A comparison of the figures for the different plats in Table V shows 

 as to calyx entrance for the two broods about the same degree of 

 protection in the case of Plats I and IV, while as between Plats I and 

 III, both involving the one-spray method, there is a difference in 

 favor of a coarser as against a mist spray of 1.14 per cent of the total 

 crop. The figures on side entrance show that neither of the one-spray 

 treatments afforded any protection to the side of the fruit, while the 

 demonstration treatment saved 4.57 per cent of the crop by preventing 

 side entrance. In comparing the total efficiency of the different 

 treatments, it will be seen that there was a saving of 26.02 per cent of 

 the crop in Plat I, 23.29 per cent in Plat III, and 31.38 per cent in 

 Plat IV. The superiority of the demonstration treatment was mostly 

 due to the prevention of side worminess. 



In order to determine what effect the respective treatments might 

 have on the proportion of fruit which dropped and that which 

 remained on the trees until picking time the following table (Table VI) 

 was prepared from the data in the previous tables: 



Table VI. — Comparison of amounts of drop-fruit during 

 Siloam Springs, Ark., 1909. 



season 



on the several 



plats. 





Num- 

 ber of 

 trees. 



Fruit from ground. 



Plat No. 



First brood. 



Second brood. 





Wormy. 



Sound. 



Total. 



Per 



cent 



sound. 



Wormy. 



Sound. 



Total. 



Per 



cent 



sound. 



I 



11 



9 



11 



13 



26 



25 



22 



945 



10,202 

 5,314 

 8,970 

 8,109 



10, 228 

 5,339 

 8,992 

 9,054 



99.74 

 99. 53 

 99.74 

 89.56 



1,449 



1,249 



240 



5,471 



7,663 

 5,997 

 5,513 

 5,742 



9,112 



7,246 



5,753 



11,213 



84.09 



Ill 



82.76 



IV 



95.82 



V 



51.20 









Num- 

 ber of 

 trees. 



Fruit from tree. 



Total fruit. 



Per 



Plat No. 



Wormy. 



Sound. 



Total. 



Per 



cent 



sound. 



Wormy. 



Sound. 



Total. 



Per 



cent 



sound. 



centage 

 of drop- 

 fruit. 



I 



11 

 9 

 11 

 13 



1,645 



1,371 



345 



1,704 



22, 167 

 12,578 

 17,361 

 2,457 



23,812 

 13,949 

 17, 706 

 4,161 



93.09 



90.17 



• 98.05 



59.04 



3,120 



2,645 



607 



8,120 



40,032 

 23,889 

 31,844 

 16,308 



43,152 

 26,534 

 32,451 



24,428 



92.76 

 90.03 

 98.12 

 66.76 



44.81 



Ill 



47.42 



rv 



45.43 



V 



82.96 







As will be noted, the highest percentage of drop-fruit was on the 

 unsprayed plat, namely, 82.96, with 47.42 per cent drop-fruit from 

 Plat III. Plats I and .IV (the one-spray and demonstration treat- 

 ments) show a difference in favor of the demonstration plat of only 

 0.62 per cent, an amount practically negligible. The percentage of 

 drop-fruit, including fallen fruit from all causes, is shown, but it 

 should be remembered that fruit from all plats, except the check, 

 was largely protected from fungous troubles by applications of Bor- 

 deaux mixture. 



