70 
EIGHTH REPORT. 
diameter. In ten cases only were there small nodules, less than a six¬ 
teenth inch in diameter. 
Plot 3. No fertilizer, 28% bearing nodules; 11% with large nodules 
near main stem, all others with smaller nodules, in eight cases at least 
miliary, very small and either scattered all over the root system or, 
more frequently, gathered into masses about a common center. On one 
plant there were twenty-six small nodules differing widely from each 
other in form and appearance; on another thirty-nine small ones scat¬ 
tered in several small masses. The point is that the grouping and gen¬ 
eral appearance of the nodules and of the plants themselves was widely 
different on these two plots where the sole apparent variant was the 
application of the ashes. 
Plot 4. Air-slaked lime. The original soil is fairly rich in nitrogen, 
about .5 per cent. It is fair to assume that the lime aided in setting- 
free nitrogen, possibly as ammonia; 16% with nodules. Usually a 
single nodule per plat and that close to the main stem, one case of six 
large nodules another of five small ones, in both cases close to the stem. 
Plot 5. Commercial fertilizers, 34% bearing nodules. The roots were 
widely spread out through soil and with superabundant root hairs. Best 
root systems so far in the series, notwithstanding better infestation 
with nodules. Nodules mainly medium to small in size, in six cases 
only near main stem, otherwise on side roots, usually at some distance 
from main stem, four cases widely scattered over root system, usually 
but two to three nodules per plant, one case thirty-five, two others 
forty-five, another 20. Seldom aggregated in masses. 
Plot 6. Home mixed fertilizers, 60%> bearing nodules. Here the 
nodules were of all sizes and locations, seldom large, seldom on main 
stem, as high as 110 on single plants, nodules then being small and 
segregated in masses on certain small rootlets. In other cases widely 
scattered. Root system rather less developed than in plot 5. 
Plot 7. Stable manure, 4% only with nodules, plants so infested 
widely separated and each having but one nodule with a single excep¬ 
tion where a plant had six large ones. Root system wonderfully de¬ 
veloped, filling the entire mass of soil in upper six inches. Yield on 
this plot very heavy and color very dark green. 
Plot 8. No fertilizer, but heavily rolled; 25% of plants bearing 
nodules, mostly large ones and near main stem, usually one to plant, 
occasionally several of smaller size. 
Plot 9. Excess of nitrate of soda; 44% with nodules, universally 
small in size, and not on main stem, three to twenty small ones per 
plant. 
Plot 10. Excess of phosphoric acid; 20% bearing nodules, all small 
and scattered with a single exception. 
Plott 11. Excess of muriate of potash; 40% bearing nodules, half 
of them large and near main stem, remainder small and scattered. 
Plot 12. Nitrogen plus phosphoric acid; 66% bearing nodules, prac¬ 
tically all of them on side roots and distant from main stem, scattered 
not agglomerated in masses. 
Plot 13. Nitrogen plus muriate of potash; 82% bearing nodules, 
nearly all small, one to forty-five per plant, sometimes scattered widely 
over root system, sometimes gathered in masses. 
