234 EXPERIMENT STATION RECORD. [Vol. 41 



The average cost per acre of growing and marketing potatoes for the dif- 

 ferent areas was found to be as follows : In Steuben County .$51.13 or 42 cts. 

 per bushel, in Clinton and Franklin Counties .$07.43 or 38 cts. per busliel, on 

 20 cost-account farms $52.78 (exclusive of marketing charges), in Suffolk 

 County $85.52 or 54 cts. per bushel, and in Nassau County $113.51 or 61 cts. 

 per bushel. The amount of seed employed ranged from 10.2 bu. per acre in 

 Steuben County to 14.7 bu. on the cost-account farms. The up-State farms 

 used more manure than the Long Island farms, this being attributed to the 

 fact that more was produced on the former and because its use tended 

 to produce scab in Suffolk and Nassau Counties. Much more commercial fer- 

 tilizer, insecticides, and Bordeaux were used on the Long Island farms, how- 

 ever, than in the up-State areas. The principal difference in the cost of pro- 

 ilucing potatoes on Long Island and up-State farms is said to be due to the 

 iLse (if better seed, more fertilizer, and higlier land rentals on Long Island. 



Sudan grass as an Ohio crop, C. G. Williams (Mo. Bui. Ohio Sta., 4 ili>19), 

 No. 5, pp. 13[)-l.'i.i) . — The production and utilization of the croi> in the State 

 is briefly described and the principal competing crops indicated. 



In rate-of-seeding tests covering a 3-year period tlie yields of hay ranged 

 from 2.74 tons per acre for a seeding rate of 7.5 lbs. drilled in rows 32 in. 

 apart to 3.12 tons for a seeding rate of 30 lbs. drilled in rows 8 in. apart, 

 while the most profitable rate was found to be 15 lbs. per acre drilled in 

 rows 8 in. apart, resulting in an average yield of 2.06 tons. "When grown for 

 seed it is suggested that from 4 to 6 lbs. of seed be used in rows from 30 to 

 36 in. apart. The yields of seed are said to range from 10 to 30 bu. per acre. 



A comparison of Sudan grass with its principal competitors, German millet 

 and Early Amber sorghum, for a 7-year period resulted in average yields of 

 air-dry forage amounting to 3.7, 3.7, and 8.3 tons per acre, respectively. The 

 cost of seeding these crops at the most profitable rate based on present seed 

 prices is estimated to be $0,875 per acre for Early Amber sorghum, $2.80 for 

 German millet, and $3.80 for Sudan grass. 



A study of sugar cane experiments, W. E.. Cross (Esttulios Relacionados con 

 la Experimcntacidn de la cana de azucar. Buenos Aires: Tucumdn, Dept. Invest. 

 Indus., 1918, pp. 109, figs. 33). — This publication comprises a series of six con- 

 ferences held with the agricultural alumni at the University of Tucuman, Ar- 

 gentina, for the purpose of discussing problems relating to sugar cane produc- 

 tion and describing the experimental methods employi-d in their solution. The 

 points considered included varieties, methods of planting, cultivation, fertiliza- 

 tion, rotation and soil improvement, and moisture conservation, drainage, and 

 irrigation. 



Experiments on the time of sowing turnips and rutabagas ( Tidsskr. Norskc 

 Landbr., 25 (1918), No. 9, pp. 367-37^). — These experiments were conducted 

 witli Dale Hybrid turnip and Bangholm rutabagas for five seasons from 1912 to 

 1917, exclusive of 1915, when insects destroyed the crop. Comparative tests 

 were made of crops sown on the 10th, 20tli, and 30th of May each year, and the 

 yields of roots, leaves, and dry matter by years are given in tables. 



In general the yields decreased with the lateness of sowing, the only excep- 

 tion being the results of 1914, when on account of a dry season the largest yield 

 i.f turnips was secured from tlie latest sowing. The dry matter content seenunl 

 to be influenced but little by the time of planting, but was determined by the 

 yield of roots. There was a difference in the yield of dry matter of over 1,200 

 kg. per hectare (1,068 lbs. per acre) between the first and second dates of 

 sowing rutabagas, and of nearly 1,400 kg. per hectare between the second and 

 third dates. It is pointed out tliat a unit of dry matter iu root crops has 



