20 



BULLETIN 118, U. S. DEPARTMENT OF AGRICULTURE. 



Table V. — Destruction of fly larvw in horse manure — Results tcith borates- 

 Experiments on open piles, New Orleans, La., November, 1913. 



Series I: 

 1... 



2.... 



3.... 



Series J: 



1.... 



2.... 



3.... 



Series K: 



1.... 



4 



5.... 



Series L: 



1.... 



Treatment of 8 bushels of ma- 

 nure; 10 gallons used when- 

 ever liquid was added. 



Num 



ber of 



ap- 



pli- 



Na-borate, 3 2J pounds dry (no 



water added) 



do.i 



Control (water) 



Na-borate, 2 pounds dry (no 



water) 



do 



Control (water) 



Na-borate in solution, J- pound 

 per gallon 



do 



Na-borate J in solution, J pound 

 per gallon 



do.i 



Control (water) 



Calcined colemanite, 3 pounds 



plus water 



do 



Control (water) 



Total 

 num- 

 ber of 

 pupae 

 found 

 after 

 8-10 

 days. 



Bacte- 

 ria per 

 gram 

 ma- 

 nure, 

 dried 



at 

 100° C. 



Mil- 

 lions. 

 2 5, 000 141 

 M,200 1 172 

 10,000 I 105 



30 . 659 

 39 .577 

 2,500 316. 



2 575 



3 1, 700 

 3 1,900 

 20, 000 



« 2,600 38 

 < 3, 200 26 

 19,000 158 



Manure. 



Solids. 



Per 



cent. 

 39.59 

 39.14 

 34.54 



42.51 

 43.29 

 42.43 



36. 69 

 43.08 



34.72 

 43.01 

 34.04 



30.58 

 30.77 

 27.14 



To- 

 tal 



tro- 



gen. 



Per 



cent. 



0.60 



.55 



.46 



.67 



.52 



.56 



.47 

 .53 

 .49 



.49 

 .44 

 .43 



Water extract. 



In per cent 



of total 



nitrogen. 



Nitro- 

 gen. 



Per 



cent. 

 36.67 

 29.09 

 30.43 



44.78 

 39.71 

 30.16 



25.00 

 21.43 



34.04 

 26.42 

 24.49 



30.61 

 31.82 

 19.54 



Am- 

 mo- 

 nia 

 nitro- 

 gen. 



Per 



cent. 

 7.33 

 8.18 

 8.69 



12.54 

 11.03 



8.27 

 7.50 



11.91 

 11.13 



16.33 

 9.09 

 6.51 



Alka- 

 linity, 



N/20 

 H2SO4 

 per 100 

 c. c, 5 

 grams 



ma- 

 nure. 



C.c. 

 11.05 

 10.60 

 5.9C 



10.20 

 10.90 



6.50 



12.45 

 7.85 



8.55 

 7.35 

 6.10 



7.20 

 5.30 



1 Nitrites and nitrates present. 



2 Approximate. Of pupa? from borax-treated piles about 1 per cent hatch. 



3 Of all these only 10 flies emerged after many days in the laboratory. 



■» Abnormal in shape and color. Only 1 fly developed in sample of 500 pupae. 



Table VI.- 



-Destruction of fly larva in horse manure — Results with borax — Cage 

 experiments at New Orleans, La.. November, 1913. 







Larval mor- 







ed 





Water extract. 







tality, 1- 

 quart sam- 



T3 





*9 













^ . 







ple manure 



ti 





H 





In per cent of 









2 days after 



03 





a 



03 



total nitrosen. 







Treatment of 8 bushels of 



treatment. 



a 

 s 





S'd 



6.2= 







a 



03 



8 

 a 





Og 







a 



^E 









MS 



No. 



manure with 10 gallons 







<3 



a 



gg 







of liquid. 







c 



p. 



6C 





o 











t* 



Pi 



T-H oS 



a 





a 



Z M 











A 



-9 



a 



o 





a 



£**! 







> 



•d 



03 



"3 



a 

 > 



.2 

 'E 

 o 



o 



03 



'S 



3 



o 



a 



CD 



O 



•a 



c 



e 

 a 









< 



R 



EH 



^ 



n 



H 



fc 



■5 



<! 



Series M: 













Million. 



P.ct. 



P. ct. 



P. ct. 



C.c. 



1 



Borax, l pound per gallon.. 



5 







15 



12 



7,392 



0.51 



33.33 



9.41 



19.50 



2 



do 



2 

 35 





 



18 

 38 



15 

 3 



3,003 

 7, 452 



.55 



.58 



18. IS 

 27. 59 



10. IS 

 11.55 



16. 50 



3 



Borax, J- pound per gallon.. 



13.00 



4 



do 







82 



4 

 



22 

 25 



6 



50 



5,800 

 2,204 



.58 

 .74 



37.93 

 16. 22 



10.80 

 4.46 



13.75 





Control (water) 



8.30 









22 







204 



■0 



3,484 



.84 



14.29 



1.79 



7.50 









In the cage tests, Table VI, the water-soluble nitrogen, ammonia, 

 and reaction were lower for the controls than for the borax-treated 



