726 EXPEEIMENT STATION EECOED. 



June, 1910, yields ranging from 1,781 to 2,840 lbs. of cured hay per acre. The 

 seed which originally came from South DaliOta produced higher yields than 

 that from Ohio, England, Russia, or Switzerland. 



In a test of pollination of clover 9 per cent of the heads of the carefully 

 screened control plat produced seed, as compared with 53.6 per cent under 

 field conditions, 2.4 of those with which butterflies and moths were screened in, 

 and 45.7 per cent in the enclosure in which bumblebees were placed. During 

 1908-1910 the 3-year average yields of timothy, slender wheat grass, and brome 

 grass were 1,856, 2,267. and 2,149 lbs. per acre respectively. In the same test 

 tall meadow oat grass winterkilled and Bromus erectus failed to start. 



No. 487, the highest yielding durum, produced 24.4 bu. per acre but was a 

 poor milling wheat. Ghirka, No. 1537, produced 27.3 bu. but gave a low yield 

 in 1909. It appears remarkable In drought resistance but very subject to the 

 diseases prevalent in moist years. 



Turkey Red winter wheat sown on summer fallow or rich sandy loam yielded 

 19 bu. per acre when sown on September 3, as compared with 18.2 bu. sown on 

 the same date on undisked barley stubble. Sowing on fallow August 5 and 

 September 13 resulted in yields of 4.6 and 23 bu. per acre respectively. 



Observations of wheat protection by drifted snow indicate that "after the 

 cold wave the least injured plants were at the point of greatest snow depth, 

 and the more injured ones were disposed in concentric circles around this 

 point. At the edge of the snow drift the plants would be nearly or quite dead." 

 On one plat gullies were formed by washing rain. " The live wheat of this 

 plat grew in gullies from 1 to 2 iu. deep." The author regards this as due to 

 the fact that the melting snow washed away soil from the roots of wheat in this 

 gully, resulting in aeration. During the period 1906-1910 durum, Fife and Blue 

 Stem wheats averaged 26, 23.9, and 20 bu. per acre respectively. The com- 

 parative drought resistance is expressed by the 5-year average ratio of durum 

 to Fife and Blue Stem of 1 : 1.17. 



Among oat varieties Kherson, Sixty Day, and Early ^Mountain produced the 

 highest yields of 46.2. 45, and 43.7 bu. per acre respectively. Early Mountain 

 yielded well under favorable moisture conditions but appeared inferior to others 

 in resistance. The conditions of the test were favorable for early maturing oats. 

 A barley test was conducted on spring disked and harrowed corn stubble 

 seeded April 20 by a single disk drill. The highest yields were produced by the 

 6-rowed barley Gaitami, No. 575, and the 2-rowed Hannchen, No. 531, 38.3 and 

 35.6 bu. per acre respectively. Among hull-less barleys Sangatsuka, No. 78, and 

 Swan Neck, No. 187, produced the highest gi-ain yields of 1,368 and 1,358 lbs. 

 per acre respectively. 



Brown County Dent, Early Pride, and ]\Iinnesota No, 23 proved considerably 

 later than Northwestern Dent corn. " One may be almost certain of raising seed 

 if the seed plat is i)laced upon some elevated portion of the farm. Early frosts 

 will thus be obviated." 



Kubanka wheat produced a higher yield when sown at the rate of 111 lbs. per 

 acre than at higher or lower rates. The heaviest sowings of Ghirka wheat and 

 Early Mountain oats tested were 120 and 78 lbs. per acre respectively. Each 

 produced the highest yield obtained in the sowing test of that variety. All 3 

 tests were conducted on undisked spring plowed wheat stubble, worked down 

 with a peg-tooth harrow and packed once with a subsurface packer. Such land 

 produced 25 and 22i bu. per acre respectively when packed twice and when left 

 unpacked. A table states the results of milling tests of 8 wheat varieties grown 

 in 1909 and 13 grown in 1910. " With the exception of the two durums the 

 wheats show a rather small percentage of flour ; Kubanka leading, with 74 per 

 cent total flour in 1909." The 1910 flour percentage appeared higher than that 



