OAT VARIETIES FOE, THE CORN BELT 
21 
exserted. Panicle equilateral, drooping, midlong to long, wide, 
ovate; branches spreading to ascending, uppermost branch long, 
very drooping, distinct ; rachis nodes 5 to 7. Spikelets few to many, 
usually 2-flowered; kernels slender. Empty glumes 20 to 25 milli- 
meters long, 5.5 to 7.5 millimeters Avide, 9 to 10 veined. Lower 
lemma 16 to 20 millimeters long, yellow to yellowish white; upper 
end with greenish tinge at maturity; basal hairs few to absent; awns 
few to common, straight (nontwisted) to twisted and geniculate, 
15 to 35 millimeters long. Upper lemma 11 to 16 millimeters, awn- 
less. Kachilla segment midlong, usually glabrous. 
logren is a rather tall midseason yellow variety, with midsized 
panicles. It usually can be recognized by its peculiarly long, droop- 
ing uppermost branches, and frequently by the greenish tinge or 
2. 22?: ;^^Jr ^^<^^^^ 
p 
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r 
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Fig. 13. — Outline map of a portion of the United States, showing distribution of tlie 
Green Russian oat in 1919 
color of the upper end of the lemmas. The glumes at time or ripen- 
ing are a creamy to greenish yellow color. It ripens at the same 
time as the parent variety. Green Russian. Under the environment 
of Ames, Iowa, the logren and a few other selections from the 
Green Russian parent have shown some resistance to stem rust. A 
panicle and spikelets of logren are shown in Figure 9. 
YIELDS OF lOGHEN 
EXPERIMENTS AT THE IOWA STATION 
Like the other pure lines previously described, logren was thor- 
oughly tested at the Iowa Agricultural Experiment Station to deter- 
mine its yielding power. The average dates of sowing and of ripen- 
ing, height of plant, percentage of lodging, bushel weight, and the 
annual and average acre yields of logren and of the parent variety, 
Green Russian, grown in varietal experiments at the Iowa station 
for the seven years from 1916 to 1919, inclusive, and in 1921, 1922, 
and 1923 are shown in Table 15. 
