232 EXPERIMENT STATION EECOED. [Vol. 37 



acre. The estimated cost of seeding and inoculating, spreading fertilizer, and 

 cutting, curing, and hauling the crop (4 tons per year for four years, at $2 

 per ton) brought the total cost of production for four years to $95.91 per acre. 



Beans in Colorado, A. Kezeb {Colorado Sta. Bui. 226 {1917), pp. 3-20, figs. 

 6). — Detailed directions are given for preparing the seed bed, planting, culti- 

 vating, harvesting, threshing, and marlceting the bean crop in Colorado. It is 

 estimated that the acreage planted to beans increased SI per c<?nt in 1916 over 

 that planted in 1914 and 1915, and that the total yield increased 41 per cent 

 in the same period. 



It is stated that Pinto beans, the chief Colorado market variety, average from 

 300 to 800 lbs. per acre under dry-farming conditions and may yield 1,800 lbs. 

 Under irrigation this variety will average from 1,200 to 2,000 lbs. and may yield 

 3,000 lbs. or more. The bean straw will average on dry land from one-half to 

 three-quarters ton per acre. 



Systematic rotation of beans Is urged as a disease-control measure. Wheat 

 following beans on dry land is reported as yielding as well as after the usual 

 summer fallow in most sea.sons. 



The cost of beau production on dry land has been found to average from $5 

 to $8 per acre and on irrigated land from $9 to $15. These estimates are ex- 

 clusive of machinery costs, interest on land, cost of irrigation, ditch upkeep, 

 and rentals. 



Clover and clover hay, A. and Gabrielle L. C. Howard {Agr. Jour. India, 

 11 {1916), No. 1, pp. 71-7S). — Notes are given on the value and production of 

 Persian clover or shaftal {Trifolium resupinatum) in the Quetta Valley, India. 

 Its adaptability to local conditions and the excellent quality of hay obtained 

 under arid conditions have contributed largely to its successful production. 



Com problems. — Choice of varieties; time, manner, and rate of planting, 

 C. A. Gearhart {Mo. Bui. Ohio Sta., 2 {1911), A"o. .}. pp. 10>,-10'.K figs. 5).— 

 Brief recommendations are made regarding the choice of varieties and the 

 time, manner, and rate of planting corn. 



In (late-of-planting tests at Wooster the periods of May 4 to 10 and May 14 

 to 17 gave the highest yields, G4.22 and 04.80 bu. per acre, respectively, for an 

 8-year average, while corn planted April 24 to 29 outyielded that planted May 

 25 to 28 and June 2 to G. The last two named planting periods produced 26.15 

 and 38.36 per cent nubbins, respectively, while the other planting periods were 

 comparatively uniform, giving about 17 per cent nubbins. The early-planted 

 corn was also more mature than that planted later, the moisture content at the 

 time of husking varying from 25.85 per cent for the first planting to 36.4 per 

 cent for the last. 



Com drilled rather than planted in hills, with plants 12 in. apart, gave the 

 highest 3-year average yield of grain, 46.88 bu. per acre, and of stover, 2,827 lbs. 

 It is stated, however, that the niethotls of cultivation and harvesting will 

 determine to a large extent the method of planting to be employed. 



In rate-of-plantlng tests the yields from the four- and five-plant rates were 

 the highest, 64.34 and 62.6 bu. per acre for an 11-year average, respectively, 

 but with a percentage of nubbins of 30.2 and 41.2, respectively. Tiie three- 

 plant rate was deemed the most satisfactory where corn is to be husked. The 

 yield of the latter was 60.95 bu. of shelled corn per acre, with 21.4 per cent 

 nubbins. Where the crop is to be fed from the shock the thicker rates of plant- 

 ing are preferable. 



How much plant food does a com crop take from an acre? E. H. Jenkins, 

 J. P. Street, and C. D. IlT-n»ELL {Cotuiccticut State Sta. BuL 193 {1917). pp. It. 

 12). — From nine series of tests with husking and silage corn at different ex- 

 periment stations the average amounts of nitrogen, phosphoric acid, and potash 



