10 AGRONOMY [Bot. Absts., Vol. V, 



year stubble of Kavangire is in each case much greater than that of the local cane. One 

 crop of plant and four of stubble gives an average yield of cane and sugar per hectare for 

 Kavangire of three times that of the local striped cane. — The objections to this type of cane 

 can be controlled and if the Kavangire turns out to be the only variety in Porto Rico immune 

 to the mottling disease, it will be adopted as the staple cane of the Island. — E. Koch. 



59. Russell, E. J. Report on the proposed electrolytic treatment of seeds (Wolfryn 

 Process) before sowing. Jour. Ministry Agric. Great Britain 26: 971-981. 1920. — Tests made 

 chiefly with wheat, oats, and barley to determine the value of the electrolytic treatment of 

 seeds before sowing gave uncertain results, with occasionally an increase, sometimes no 

 influence, and at other times a reduction in yield. At present the treatment should be looked 

 upon as an adventure which may or may not prove profitable. — M. B. McKay. 



60. Schander, R. Beobachtungen und Versuche iiber Kartoffeln und Kartoffelkrank- 

 heiten im Sommer 1917. [Observations and investigations of potatoes and potato diseases in 

 1917.] Fuhl. Landw. Zeit. 67: 204-226. / fig. 1918. — In general, uncut tubers are to be pre- 

 ferred to cut tubers for seed. The practice of permitting the cut surfaces of seed potatoes to 

 dry before planting seems to be inferior to direct planting; at least the yields are higher in 

 the latter case. Spacing the plants 30 to 40 cm. apart in the row with the rows 50 to 60 cm. 

 wide gives the highest net yields. In light soils the distance may be decreased while in heavy 

 soils it may safely be increased. Varieties with red skin, notably variety Wohltman, pro- 

 duced a number of tubers which were of a light color and contained red stripes. No explana- 

 tion for this phenomenon has been given. The extreme dryness of the summer of 1917 delayed, 

 and, in the early varieties, prevented the occurrence of late blight. On examination of the 

 tubers, however, it was found that many were covered with mycelium of Phytophthura infes- 

 tans. After all, is the fungus carried on the tubers and does it from them enter the stems and 

 foliage? The stems and foliage seem to be least resistant to the fungus between the time of 

 flowering and maturity. The best way to combat the fungus is to grow varieties which, at 

 the time of the appearance of the fungus, are but little affected. — Ernst Artschwager. 



61. Shepherd, F. R. Cotton experiments. Report on the Agricultural Department, 

 St. Kitts-Nevis, 1917-18: 7-14. Imperial Department of Agriculture, Barbados. 1919. — 

 Details given relating to selection work with cotton in the Colony ; boiling and flowering curves 

 are included. — J. S. Dash. 



62. Stokes, Fred. The food value of vegetables. Jour. Roy. Hortic. Soc. 44: 21-30. 

 1919.— See Bot. Absts. 5, Entry 1857. 



63. Stormer, . Kelmungshemmungen bei blauen Lupinen. [A case of arrested 



germination in blue lupines.] Illustrierte Landw. Zeitg. 39: 12. 1919. — The seeds of the 1918 

 crop of blue lupines gave a germination percentage of only 24. However, a high percentage 

 of germination (89 to 92 per cent) was obtained after treatment with concentrated sulphuric 

 acid for 15 minutes, followed by a thorough washing with water and then drying. — John W. 

 Roberts. 



64. Stormer, . Die Anwending von schwefelsauren Ammoniak und Kalkstickstoff 



als Kopfdiigung zu Winterroggen. [The use of ammonium sulphate and calcium nitrate as the 

 principal fertilizers for winter rye.] Illustrierte Landw. Zeitg. 39: 73-74, 83-84. 1919. 



65. Taylor, H. W. Tobacco culture. Harvesting [and curing. Rhodesia Agric. Jour. 

 16:521-530. 6 fig. 1919. 



66. Trueman, J. M. Fourteenth Annual Report of the Nova Scotia Agricultural College 

 and Farm. Part 2— Report of J. M. Trueman, Professor of Agriculture and Farm Superin- 

 tendent. Prov. of Nova Scotia Ann. Rept. Secretary Agric. 1918: 26-50. 1919. 



