Kentucky Agrieulttcral Experiment Station 41
1 plant—to-row selection. The growing of corn and soybeans to-
i gether in varying ratios was continued. The severe drouth
; of 1921 made corn practically a failure but did not greatly
é reduce the yield of soybeans. The reduction in yield when
E beans were planted thickly in corn was of course very striking
1 this year; in fact, the results of four years’ tests show that
I soybeans planted in corn reduce the yield seriously unless but
few beans are grown.
_- Hemp. Very interesting results have been obtained in
;] past years from the use of nitrogenous fertilizers on hemp.
These tests were continued in 1921, both nitrate of soda and
G sulfate of ammonia being used. The fertilized hemp grew at
_ least two feet taller than the unfertilized and will certainly
yield one—third more. This on corn land that was manured for
0 corn and is in excellent condition.
S Oats. In the tests with oats, it 1nay be of interest to note
[- that the Fulghum variety which has been so generally recom-
it mended by several southern Stations in recent years gave about
H two-thirds as large a yield as Burt at the Station farm this
is Corn. In the tests on corn, the use of commercial nitro-
L gen in amounts varying from 100 to 400 pounds per acre and
i` applied both at planting time and when corn was waist high,
lv gave no increase of yield this year.
; Corn Root-rot. Relative resistance of a large number of t
l_ ears of corn to root-rot was determined by growing seedlings
` of each ear in a sand box in a warm room. The dates of death
of the seedlings of each ear indicate their relative resistance
fs to Fusarium moniliforme, which appears to be carried in suf-
is fieient quantities in all ears to infect the seedlings. No in-
I' crease in yield in the field was obtained by selecting the eleven
1‘ most resistant ears in the sand box in over 1,000 ears of Boone
T County white when these were compared with the six most sus-
ceptible ears from the same lot of corn. These were tested on
n the very fertile bluegrass soil. The season was excessively dry
le and all yields were very low.