NOTES AND ABSTRACTS. 



355 



leaves showing water-soaked and brownish spots about 2-5 mm. in 

 diam.eter, and from sugar beet on which dark brown (often black) 

 irregular spots and streaks were present. Cross inoculations proved 

 the identity of the bacilli from the two sources, and it was also found 

 to be pathogenic to bean leaves and pods, lettuce, pepper, and egg plant 

 foliage. It probably enters the plant by wounds or by insect injuries, 

 and may be spread by insects. — F. J. C. 



Sugar Beet Leaf Spot. By V. W. Pool and M. B. McKay 

 {U.S.A. Dep. Agr,, Bull. 121, 1913, pp. 14-17)- — ^The leaf spot on 

 the sugar beet is caused by the fungus Cercospora heticola, which 

 lives through the winter on the old beet tops, .The beet tops should 

 be removed, while still green, and made into silage. Five pounds of 

 salt are added for each ton of beet tops. The fungus does not survive 

 this treatment.— 5. E. W. 



Sugar Beet, Curly Top. By H. H. Bunzel {U.S.A. Dep. Agr., 

 Bull. 277, 1913, pp. 1-28). — ^The leaves of sugar beets suffering from 

 curly top contain two or three times as much oxidase as the leaves 

 of healthy plants. — S. E. W. 



Sugar Beets, Deterioration in Quality due to Nitrates formed 

 in Soil. By W. P. Headden {US.A. Exp. Sin., Colorado, Bull. 

 183, 1912). — The au1;hor brings forward substantial evidence to 

 show that large additions of nitrates to soil caused serious deteriora- 

 tion in the quahty of beets, lessening the sugar content, and causing 

 heavy growth of tops, at the expense of the roots. — C. P. C. 



Sulphate of Copper and Washing Soda for Potato Spraying. — 



The Department of Agriculture for Ireland recommends the use of 

 carbonate of soda in preference to lime for the following reasons : — 



1. The spraying mixture adheres longer to the foliage of the 

 plants, and is not so readily washed off by rain. 



2. The mixture can be more easily prepared. 



3. The nozzles of the machine are not so liable to become stopped 

 with grit or refuse material. If washing soda is used and the mixture is 

 carefully made, there should be no sediment. — C. H. H. 



Sweet Peas. Pt. I. by J. Craig and A. C. Beal. Pts. 11. and III. 

 by A. C. Beal {U.S.A. Agr. Exp. Sin. Cornell Universiiy, Bull. 301, 

 1911, pp. 749-764, I plate ; Bull. 319, 1912, pp. 620-656, 12 figs. ; 

 Bull. 320, 1912, pp. 659-713, 13 plates, 11 figs.). — A monograph 

 of the sweet pea, containing little new information for the grower 

 of this favourite flower. The cultural directions are summarized 

 thus : Trench deeply, manure liberally ; plant thinly ; stake quicklj^ 

 water freely, and dispod promptly. 



When sweet peas are in full flower, give weak liquid manure once 

 a week ; alternate with sodium nitrate or ammonium sulphate (i oz. 



