240 EXPERIMENT STATION RECORD. 



tons per acre was applied to one of the bare fallow plats in each set. 

 The wheat was sown August 25. The bare fallow plats which had 

 received the barnyard manure produced the heaviest yield, but the 

 method of treatment was also the most expensive. Green manuring 

 with peas was more effective than green manuring with rape or buck- 

 wheat or bare summer fallow without barnyard manure. 



A study was made of the effect of cutting at different stages of ma- 

 turity, the average dates of cutting for 4 years being July 4, 11, 18, 25, 

 and August 1. In each year the greatest yield of straw was obtained 

 from the first cutting, the heaviest grain per measured bushel from 

 either the second or third cutting. The lowest yields and the lightest 

 grain were obtained from the first cutting of each variety in each year. 

 The best average yield for 4 years was obtained from the cutting made 

 July 25. 



Oats. — Comparative tests of 103 varieties were made. In general the 

 varieties with a spreading head gave most satisfactory results. Joan- 

 ette, a black variety, has given the largest average yield of grain among 

 all the varieties tested, 86.08 bu. per acre. But few of the black vari- 

 eties rank high in productiveness. Siberian, Oderbrucker, Waterloo, 

 Probsteier, and Danebrog, all of which are white varieties, gave an 

 average yield of over 75 bu. per acre in a 9-year test. The results in 

 favor of the drilled grain as compared with grain sown broadcast were 

 more marked than in the case of some of the other crops. Oats sown 

 April 22 gave a larger yield this season than seed sown earlier or later, 

 and this was true for the average of 3 years. 



Beans. — Among 31 varieties White Wonder, Burlingame Medium, 

 Medium, Schotield, and Snowilake, in the order named, were most pro- 

 ductive, their yields ranging from 31.47 to 36.77 bu. per acre. 



Mixed grain. — Eleven different combinations of barley, peas, oats, 

 and wheat were tested for the production of grain and straw. Barley, 

 peas, and wheat gave the best yield of grain and barley and peas the 

 largest yield of straw for this season, but the best average yield in 

 straw and grain for 5 years was produced by a mixture of barley and 

 oats. 



Seed selection. — Different qualities of seed of barley, spring wheat, 

 white oats, and peas were selected and tested. In a 3-year trial with 

 barley, wheat, and oats, in every case except two large plump seed pro- 

 duced the largest kernel as compared with small plump and shrunken 

 seed. 



Dark-colored plump, light colored and light weight, and hulled grain 

 of Joanette oats were selected and compared. The light seed produced 

 the smallest grain, the hulled seed the next smallest, and the large 

 plnmp the largest and heaviest grain. Sound peas for seed gave better 

 results than cracked peas, and large peas better yields than small ones. 



Tests of 3 varieties each of spring rye and buckwheat are reported. 



Sugar beets in Colorado in 1897, W. W. Cooke and W. P. Head 

 den (Colorado Sta. Bui. ix J , pp. 1-38). — This bulletin gives the report 



