DESTRUCTION OF FLY LAEV^ IN HOESE MANUEE, 1915. 



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

 and solutions of calcium cyanamid. 



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



No. 



Material used. 



Treatment of 4 bushels oT manure 

 with following amounts of mix- 

 tures, then sprinkled with 5 gal- 

 lons of water. 



Flies 

 emerged 

 (num- 

 ber). 



Apparent 

 larvicidal 



effect 

 (per cent 

 of control 



Flies emerged 

 from control cages. 



Num-" 

 • ber. 



Calcium cyanamid 

 + kainit.' 



Calcium cyanamid+ 

 kainit+acid phos- 

 phate. 



.do. 



Calcium cyanamid -1- 

 muriate of potash 

 -1-acid phosphate. 



Calcium cyanamid+ 

 acid phosphate. 



do. 



do. 



do. 



do. 

 do. 



do. 

 .do 



A, 1 pound calcium cyanamid + 1 

 pound kainit. 



B, 1 pound calcium cyanamid -l- 1 

 pound kainit. 



A, I pound calcium cyanamid + i 

 pound kainit + J pound acid phos- 

 phate. 



B, J pound calcium cyanamid -I- J 

 pound kainit + § pound acid phos- 

 phate. 



A, 1 pound calcium cyanamid + 1 

 pound kainit + 4 pounds acid phos- 

 phate. 



B, 1 pound calcium cyanamid + 1 

 poimd kainit + 4 pounds acid phos- 

 phate. 



C, 1 pound calcium cyanamid -l- 2 

 pounds kainit 4- 3 pounds acid phos- 



D, 1 pound calcium cyanamid 4- 2 

 pounds kainit + 3 pounds acid phos- 

 phate. 



E, 1 pound calcium cyanamid + 3 

 pounds kainit -t- 2 pounds acid phos- 

 phate. 



F, 1 pound calcium cyanamid + 3 

 poimds kainit -1- 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, ^ pound calcium cyanamid + 2§ 

 pounds acid phosphate. 



C, ^ pound calcium cyanamid + 2§ 

 pounds acid phosphate. 



D, J pound calcium cyanamid -I- 2| 

 , pounds acid phosphate. 



A, i pound calcium cyanamid -t- f 

 pound acid phosphate. 



B, J pound calcium cyanamid + f 

 pound acid phosphate. 



A, 4 pound calcium cyanamid + 2 

 pounds acid phosphate. 



B, tj poimd calcitfm cyanamid + 2 

 pounds acid phosphate. 



A, ^ poimd calcium cyanamid + 3 

 pounds acid phosphate. 



B, ^- poimd calcium cyanamid + 3 

 pounds acid phosphate. 



A, i pound calcium cyanamid -|- 3 

 pounds acid phosphate. 



B, i pound calcium cyanamid + 3 

 pounds acid rihosphato. 



A, ^ pound calcium cyanamid + IJ 

 pounds add phosphate. 



B, if pound calcium cyanamid + IJ 

 pounds af;id phosphate. 



A, J pound calcium cyanamid + 1^ 

 fKjund.s acid phosphate. 



B, i poimd cak^ium cyanamid + IJ 

 pounds acid phosphate. 



A, J pound calcium cyanamid + IJ 

 pounds acid phosphate. 



B, i pound calcium cyanamid + IJ 

 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. 



1, 052 ca. 



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 



263 



62 



378 



526 



238 



194 

 1,123 

 1,317 

 7,250 

 3,535 

 1,123 

 1,317 

 2,576 

 1,160 

 1,716 



884 

 2,576 

 1, 100 

 1,716 



884 



490 



5,392 



163 



452 



5,392 

 1,220 

 1,868 

 1,300 

 1,868 

 1,300 



