20 3ULLETIN 1126, U. S. DEPARTMENT OF AGRICULTURE. 
In section 1 of Table 9 it is shown that the yields of potatoes were 
not greatly influenced by the borax until large quantities were applied. 
In this section the fertilizer-borax mixtures were applied some time 
before planting, and during this period the rainfall was at times quite 
heavy. In section 1 an application of 100 pounds was required 
before any marked depression in the yield took place. . 
In section 2, where the fertilizer-borax mixtures were applied and 
planting done immediately, the first obvious depression in yield took 
place with the 30-pound application of borax. 
In section 3, where the fertilizer-borax mixtures were sown broad- 
cast as much as practicable, no distinct depression in yield can be 
attributed to concentrations of borax under 50 pounds. 
TaBLE 10.—Effect of various quantities of borax on corn in plats on Sassafras loam at 
New Brunswick, N. J., in 1920. 
[Yields stated in pounds, air-dry basis; fertilizer application, 400 pounds per acre.] 
| 
Grain. Cobs. Stalks. 
Borax per acre. | | 
Sec. 1.a| Sec. 2.0 | Sec. 3.¢| Sec. 1.a | Sec. 2.0 | Sec. 3.¢ | See. 1.2] Sec. 2.6} Sec. 3.¢ 
| 
None (check 1)..... 11. 30 19. 88 19. 59 2. 43 4, 32 4.33 24, 25 22. 00 21.40 
EMOUNG eee SS: 7.96 | 16.79 17. 39 1.63 3.73 3. 44 25. 00 26. 95 18. 90 
AMOUNOS 22 8 Fo 8. 87 14, 93 20, 53 1. 81 3. 18 4, 33 23. 00 25. 75 | 23. 60 
Bpoundsa cee | A 14. 30 13. 36 16. 79 3.05 2. 69 3. 44 21.15 18.20 | 20.80 
None (check 2) ..... 13. 47 13. 00 13. 91 2. 81 2.35 2. 82 19. 30 18. 55 | 20. 20 
ASPOWMMGS se's 52. 3. oe 9. 82 12. 00 11. 97 2. 07 2. 50 2. 36 14. 60 17. 50 17.05 
Bb pounds 22. -S..401 8.79 8. 60 9. 97 2. 00 1.65 2, 04 14. 20 12.55 13. 80 
LG poundse 22.7 3. - 10. 85 9. 47 11.73 2. 30 1.97 2.61 14, 85 15. 90 16. 70 
None (check 3)..-.-| 7.95 11. 68 15. 90 1, 83 | 2. 44 3. 16 18. 70 ‘16. 52 | 19. 85 
20 pounds........-. 8. 64 9, 24 13. 90 1, 93 1. 78 2. 84 18. 10 15.13 | 21.05 
sO:pounds 3.2 52-2. 11.77 7.57 12. 63 2. 67 1.99 2. 86 22. 95 16. 70 | 21.70 
SO pounds... 2... 11. 08 3.41 6.79 2. 62 | 92 1. 66 18, 75 7. 30 | 15, 65 
None (check 4).....| 10.55 19, 12 20. 90 2. 23 4, 27 4. 90 22.50 | 24.35 31.50 
100 pounds........- 6, 44 | . 62 2. 82 1.76 19 . 86 20. 90 1.70 | 9. 46 
200 pounds......... 1, 23 0 0 32 0 0 2.60 eae | 0 
400 pounds......... 40 0 0 15 0 0 2.70 | Oo 0 
| 
a Fertilizer applied in drill some time previous to planting. 
b Fertilizer‘applied in drill at time of planting. 
c Fertilizer applied broadcast at time of planting. 
In the corn experiment (Table 10) the normal fertilizer and fertilizer- 
borax mixtures were applied at the rate of-400 pounds per acre; the 
quantity of borax, however, was the same as that applied to the 
potatoes. 
In section 1 very little depression in yield, if any, occurred below 
the 50-pound application, but with quantities in excess of 50 pounds 
the injury was quite severe. 
In section 2 the yields are somewhat confusing, but there was some 
indication that, beginning with the 5-pound application, some injury 
ensued, although it will be noted that with applications of 10 and 20 
pounds per acre the yields were approximately the same as with 
the 5-pound application. 
In section 3 some evidence is shown that, under the seasonal con- 
ditions prevailing, fairly high concentrations of borax were required 
to produce serious injury. | 
t will be noted (Table 11), as previously brought out, that the 
rainfall at New Brunswick during the growing season of 1920 was 
unusually heavy, which probably reduced the concentration of borax 
through solution and diffusion into the soil mass. At other stations 
