334 EXPERIMENT STATION RECORD. 



row and the seed dropped in it. Twenty phints in thin plat bore 509 

 tubercles on their roots." 



In another experiment soy beans were planted on a field of 11^ acres 

 which had been inoculated with infected spil at the rate of 1,000 lbs. 

 per acre sown broadcast and harrowed in. "A careful examination of 

 hundreds of plants in this field failed to show a single tubercle, and 

 this method with the quantity of soil used is a total failure." In a 

 later experiment 46 acres were inoculated with infected soil applied in 

 the row by the use of a fertilizer attachment on the drill. "The re- 

 sults were satisfactory, nearly all plants bearing a large number of 

 tubercles," 



The A^alue of tubercles on the roots of soy beans lies largely in the 

 increased amount of nitrogen obtained from the air which they leave 

 in the soil for succeeding crops. Even when the soil is not inoculated 

 and no tubercles develop on the roots, the crop is still considered a 

 desirable one to grow in rotation, both for those who own the land 

 and for renters, because of its strong root system, drought-resisting 

 qualities, and the large amount of protein furnished by the crop. 



Directions for growing tuberculous-rooted soy beans on a small scale 

 for the purpose of obtaining a supply of inoculated soil are given. 



Sugar-beet experiments during 1899, A. J. McClatchie {Ari- 

 zona Sta. B%d. Sl^ pp. 263-27'2,Ji(j. 1). — These experiments on the sta- 

 tion farm near Phoenix were made mainly to study the question of 

 irrigation for the sugar beet. Incidentally data were secured on the 

 limits of the season, best time to sow and harvest, and on the changes 

 taking place in the beet during the time of ripening. 



It was found advisable to irrigate the land before seeding and again 

 when the plants were two or three months old. Excessive irrigation 

 should be guarded against. While too much water increased the yield, 

 it greatly reduced the percentage and total yield of sugar. 



Beet seed germinated fairly well in the locality from September to 

 May. A good stand may be secured without irrigation from Decem- 

 ber to March. The best results from winter-sown beets were obtained 

 from a sowing made the latter part of January. Fair results were 

 obtained in heav}" soils from seeding as late as the first of April. 

 Winter-sown beets improve in quality until the end of Jul3% when 

 they usually begin to deteriorate. Beets grown after beets resulted 

 in a decreased yield. 



Sugar beets, 1899, J. T. Willard and R. W. Clothier {Kanms 

 Sta. Bnl. 5.^7 PP- ¥)-^^)' — Sugar beets were grown l)y 40 growers 

 throughout the State and samples sent to the station for analysis. The 

 data for the analyses are given in the usual tal^ular form. The aver- 

 age results obtained were not as good even as those obtained in pre- 

 vious years (E. S. R., 10, p. 34<)), the percentage of sugar in the juice 

 averaging 10.89 and the purity coctficient 73.4. The author states 



