ATMOSPHERIC-NITROGEN FERTILIZERS. 
Table 5. — Yields per acre of rye and wheat from Section I of field No. 2. 
15 
Fertilizer ratio. 
Series A.— Ammonium nitrate: 
0-8-4 
1-8-4. 
2-8-4. 
4-8-4. 
8-8-4. 
Yields of rye (pounds.) 
Grain 
and 
straw. 
8-8-4 1 
Series B. — Sodium nitrate: 
0-0-0 
0-8-4. 
1-8-4. 
2-8-4. 
4-8-4. 
8-8-4 
Series C— Ammonium sulphate: 
0-0-0 
0-8-4. 
1-8-4. 
2-8-L 
4-8-4. 
8-8-4. 
Series D. — Cyanamid: 
0-0-0 
0-8-4. 
1-8-4. 
2-8-4. 
4-8-4. 
8-8-4 
Series E.— Cyanamid (applied in the fall): 
0-0-0 
0-8-4. 
1-8-4. 
2-8-4. 
4-8-4. 
8-8-4. 
1,640 
1,240 
2,720 
1,280 
2,240 
1,480 
2,280 
1,640 
3,400 
2,280 
2,280 
2,920 
1,200 
880 
1,360 
960 
1,400 
1,360 
1,760 
1,640 
1,880 
2,040 
1,840 
2,920 
1,000 
1,280 
960 
1,560 
1,560 
1,280 
1,840 
2,120 
2,720 
1,920 
3,200 
2,520 
560 
1,280 
1,040 
960 
1,400 
1, 360 
1,960 
1,400 
1,960 
2,680 
2,320 
2,880 
920 
920 
1,200 
1,800 
1,680 
2,000 
2,520 
1,920 
2,800 
3,240 
2,920 
4,000 
Average. 
1,440 
2,000 
1,860 
1,960 
2,840 
2,600 
1,040 
1,160 
1,380 
1,700 
1,960 
2,380 
1,140 
1,260 
1,420 
1,980 
2,320 
2,860 
920 
1,000 
1,380 
1,680 
2,320 
2,600 
920 
1,500 
1,840 
2,220 
3,020 
3,460 
Increase 
over 
check. 
560 
420 
520 
1,400 
1,160 
Yields of wheat (pounds). 
Grain 
and 
straw. 
220 
540 
800 
1,220 
160 | 
720 { 
1,060 
1,600 
1,320 
1,600 
340 
720 
1,520 
1,960 
680 
1,640 
1, 360 
1,480 
1,840 
1,600 
2,680 
2,200 
2, 010 
3,010 
2,560 
2,520 
1,040 
1,300 
1,680 
2, 480 
2,120 
1,960 
2,840 
1,880 
2,200 
2, 200 
3, 360 
2,320 
1,720 
1,960 
1,720 
1,760 
1,440 
1,560 
2,640 
1,880 
2,360 
2,680 
2,720 
2,720 
1,000 
640 
1,280 
720 
1,320 
880 
1,400 
1,040 
1,880 
2,160 
3,000 
2,400 
1,040 
920 
1,400 
680 
1,600 
960 
2,120 
1,240 
2,320 
2,000 
3,000 
2,800 
Average. 
1,160 
1,420 
1,720 
2,440 
2,540 
2,540 
lilOO 
2,080 
2,040 
2,360 
2,500 
2,840 
1,840 
1,740 
1,500 
2,260 
2,520 
2,720 
820 
1,000 
1,100 
1,220 
2,020 
2,700 
1,040 
1,280 
1,680 
2,160 
2,900 
Increase 
over 
check. 
260 
560 
1,280 
1,380 
1,380 
-40 
280 
420 
760 
-240 
520 
780 
100 
220 
1,020 
1,700 
240 
640 
1,120 
1,860 
1 Half of the nitrogen was derived from ammonium nitrate and the remainder from sodium nitrate. 
INFLUENCE OF LIME ON THE UTILIZATION OF NITROGEN FROM THE VARIOUS SOURCES. — 
SECTION II. 
The importance of the soil reaction on the availability of ammonium 
nitrate and cyanamid was determined for wheat, rye, oats, and grass. 
Nitrogen was supplied at the rate of 40 pounds per acre, half at the 
