1019] FIELD CROPS. 225 



G7 sin. The dissection of one seed potato sbowed that the sprout bearing the 

 new tuber liad started from an eye wliere two external sessile new tubers were 

 attached. Apparently the direction of growth had been inward from the I)egin- 

 ning. The ingrowing sprouts showed the leuticel-like openings described by 

 Gager (B. S. R.. 26. p. S2S) in an account of a case which the present case resem- 

 bles in some respects. 



FIELD CROPS. 



[Beport of field crops work in Idaho, 1918], R. K. Bonnett, H. W. IIulbert, 

 R. J. Leth, p. a. Wenger, P. P. Peterson, E. B. PIitchcock, and F. H. Lafrenz 

 (Idaho Sta. Bui. 113 (WIS), pp. 22-24, 2S-31, 1,3, ////).— This describes the con- 

 tinuation of work previously noted (E. S. R., 39, p. 333). The moisture supply 

 during the season of 1917-18 is said to have been insufficient for normal crop 

 liroduction. Observations on variety tests with cereals may be summarized as 

 follows : 



Turkey Red again gave the best results in tests of winter wheat varieties, 

 while Kharkov and Rod Russian also gave satisfactory results. Fall-sown 

 Marquis wintered well and produced a good yield of excellent quality. Jenkins 

 Club, Palouse Bluestem, Early Baart, and Marquis appeared to be the most 

 promising spring wheats for this region. White Winter barley, with an average 

 yield of G5.4 bu. per acre since 1911, has surpassed all other winter varieties and 

 has also given good results as a spring variety. As a rule six-row types of 

 Itarley have outyielded the two-row types, while the bearded varieties have out- 

 yielded the beardless sorts. Swedish Select, Banner, Danish Giant, Abundance, 

 Colorado No. 37, and White Russian oats are deemed to be specially adapted to 

 this section. Petkuser winter rye was first with a yield of more than 35 bu. 

 per acre. Tlie crop is also said to show much promise as an early spring pas- 

 ture crop. Spring rye can not be recommended. 



Cultural and variety tests with forage crops seeded alone and in mixtures 

 are briefly noted. Alfalfa gave the best results when seeded in rows, as did 

 also Sudan grass. Other legumes and grasses which gave promising results in- 

 cluded red, alsike, and sweet clover, brome grass, orchard grass, tall meadow 

 oat grass, perennial rye grass, Italian rye grass, and slender wheat grass. A 

 few plants of an annual white sweet clover grown from sc?ed secured from the 

 Iowa Experiment Station (see p. 227) made an excellent growth and ripened 

 some seed. It is stated, however, that this plant can not replace biennial white 

 sweet clover in hay or pasture mixtures. A number of varieties of millet made 

 fair yields, but were not so satisfactory as Sudan grass. None of the sorghum 

 \arieties tested produced seed, and only a few developed suthciently to make a 

 good quality of ccnirse hay. Ogemaw soy beans, an early sort, appeared to be 

 best for northern Idaho. White Canada or White Colorado field peas are 

 deemed best for seeding with oats for hay. Ear-to-row plantings of Rustler 

 White Dent corn, said to be best for both gi-ain and silage in the northern parf 

 of the State, yielded as high as 123 bu. per acre, while a number of rows pro- 

 duced at the rate of more than 90 bu. 



A report of the seed analyst for the year ended December 1, 1918, prepared by 

 P. A. Wenger, comprises a brief statement of the number of samples of different 

 field crop seeds examined for purity and germination. A total of 1.291 samples 

 were tested for purity and 198 for germination. 



Wheat grown in rotation with and without manure on Palouse silt loam pro- 

 duced on the average 16.8 bu. per acre without manure and 19.2 bu. with manure. 



Work on the Sandpoint substation showed that wheat grown on clover and 

 timothy sod produced 12.G bu. as compared with 8.5 bu. from plats otherwise 



