DESTRUCTION OF FLY LARVAE IN HORSE MANURE, 1915. 



Table 4. — Destruction of fly larvae in horse manure — Results with fertilizer mixtures 

 and solutions of calcium cyanamid. 



[Open-pile experiments, Bethesda, Md., and Baton Rouge, La., 1915.] 





Material used. 



Treatment of 4 bushels of manure 

 with following amounts of mix- 

 tures, then sprinkled with 5 gal- 

 lons of water. 



Flies 

 emerged 

 (num- 

 ber). 



Apparent | 

 larvicida-l 



effect 

 (percent 

 of control 

 average). 



Flies emerged 

 from control cages. 



No. 



Num- 

 ber. 



Average. 



1 

 2 



Calcium cyanamid 

 + kainit. 



Calcium cyanamid+ 

 kainit+acid phos- 

 phate. 



do 



A, 1 pound calcium cyanamid + 1 

 pound kainit. 



B, 1 pound calcium cyanamid + 1 

 pound kainit. 



A, .£ pound calcium cyanamid + i 

 pound kainit + J pound acid phos- 

 phate. 



B, | pound calcium cyanamid + \ 

 pound kainit + i pound acid phos- 

 phate. 



A, 1 pound calcium cyanamid + 1 

 pound kainit + 4 pounds acid phos- 

 phate. 



B, 1 pound calcium cyanamid + 1 

 pound kainit + 4 pounds acid phos- 

 phate. 



C, 1 pound calcium cyanamid + 2 

 pounds kainit + 3 pounds acid phos- 

 phate. 



D, 1 pound calcium cyanamid + 2 

 pounds kainit + 3 pounds acid phos- 

 phate. 



E, 1 pound calcium cyanamid + 3 

 pounds kainit + 2 pounds acid phos- 

 phate. 



F, 1 pound calcium cyanamid + 3 

 pounds kainit + 2 pounds acid phos- 

 phate. 



A, 1 pound calcium cyanamid + 1 

 pound muriate of potash + 3 

 pounds acid phosphate. 



B, 1 pound calcium cyanamid + 1 

 pound muriate of potash + 3 

 pounds acid phosphate. 



A, J pound calcium cyanamid + 2| 

 pounds acid phosphate. 



B, I pound calcium cyanamid + 2§ 

 pounds acid phosphate. 



C, ^ pound calcium cyanamid + 2§ 

 pounds acid phosphate. 



D, J- pound calcium cyanamid + 2§ 

 . pounds acid phosphate. 



A, £ pound calcium cyanamid + | 



pound acid phosphate. 

 |B, I pound calcium cyanamid + | 

 I pound acid phosphate. 

 [A, | pound calcium cyanamid + 2 

 1 pounds acid phosphate. 

 |B, \ pound calcium cyanamid + 2 

 I pounds acid phosphate. 

 [A, \ pound calcium cyanamid + 3 

 1 pounds acid phosphate. 

 |B, i pound calcium cyanamid + 3 

 I pounds acid phosphate, 

 f A, J pound calcium cyanamid + 3 

 1 pounds acid phosphate. 

 |B, \ pound calcium cyanamid + 3 

 I pounds acid phosphate. 

 (A, § pound calcium cyanamid + 1| 

 1 pounds acid phosphate. 

 |B, § pound calcium cyanamid + \\ 

 \ pounds acid phosphate, 

 f A, f pound calcium cyanamid + \\ 

 1 pounds acid phosphate. 

 |B, f pound calcium cyanamid + 1\ 

 I pounds acid phosphate. 

 [A, f pound calcium cyanamid + \\ 

 1 pounds acid phosphate. 

 |B, f pound calcium cyanamid + \\ 

 I pounds acid phosphate. 



93 



247 



1,790 



1,015 



111 



153 



86 



50 



48 



118 



1,056 



717 



176 



221 



286 



186 



850 ca. 



934 ca. 



1,984 



2,115 



789 ca. 



l,052ca. 



1,426 



1,233 



1,136 



611 



1,127 



922 



1,297 



1,248 



81.1 

 49.6 

 66 



81 



33 



10 



48 



60 



61 



32 











19 









 14 

 30 

 24 

 63 

 60 

 35 

 14 

 24 

 34 

 13 

 53 

 40 

 50 







4 



377 



604 



7,250 



3,535 



1 490 

 | 5, 392 















3 







4 



Calcium cyanamid+ 

 muriate of potash 

 -facid phosphate. 



Calcium cyanamid+ 

 acid phosphate. 



.....do.: 



263 



62 



378 



526 



I 163 

 \ 452 









5 

 fi 



238 



194 

 1,123 

 1,317 

 7,250 

 3,535 

 1,123 

 1,317 

 2,576 

 1,160 

 1,716 



884 

 2,576 

 1,160 

 1,716 



884 



1 216 

 \ 1, 220 



7 



do 



1 



[ 5,392 



8 



do 



J 



1 1,220 



9 



10 



do 



do 



1 



1 1,868 



\ 1,300 



11 



12 



do 



do 



\ 1,868 

 \ 1,300 







J 



