1918.] HORTICULTUBE. 843 



The farm vegetable garden, H. O. Webnek {North Dakota Sta. Circ. 17 

 (1918), pp. 64. figs. 66). — A treatise on growing, harvesting, and storing the 

 farm vegetable supply, prepared with special reference to conditions in North 

 Dakota The winter forcing of plants and the starting and culture of vege- 

 tables in hotbeds and cold frames, as well as the outdoor culture of vegetables, 

 are considered. A plan is given of a one-third acre farm vegetable garden 

 operated at the station for three years, together with a graphic representation 

 of dates when various vegetables are seeded, harvested, and stored or forced in 

 order to carry out the station plan. 



Disease-resistant varieties of tomatoes, S. N. Gkeen and J. G. Humbekt 

 (Mo. Bui. Ohio Sta., 3 (1918), No. 2, pp. 43~iS, figs. S).— This paper summarizes 

 tbe station work in the selection and improvement of disease-resistant strains 

 of tomatoes. 



A number of individual plant selections were made in 1911 and selections 

 from these strains have been grown each season on the trial grounds at Wooster. 

 Another series of selections was begun by tbe authors in 1915 and the work of 

 testing the selections continued both at Marietta and at Wooster. The results 

 of trials at Marietta in 1917, with special reference to Fusarium resistance, are 

 presented in tabular form. 



A strain of the Acme variety procured from the Louisiana Stations gave 

 complete resistance or immunity. This strain, however, gave no greater yield 

 than the nonresistant commercial varieties and was so late in season as to be 

 worthless for early cropping. Two strains of the Beauty variety, the Ohio 76 

 and the Tennessee Station strain 10-3, gave about the same resistance, 82 and 

 87 per cent, respectively. The Ohio strain gave the much heavier yield and 

 ripened its crop earlier. Selections are being made of the Bonny Best variety. 

 The work is to be continued until commercially important strains are secured 

 and increased for distribution. 



Spray calendar, W. E. Brixton and G. P. Clinton (Connecticut State Sta. 

 Bui. 199 (1918), pp. 51-98, figs. 99).— A revision of Bulletin 183 of the station 

 (E. S. R., 32, p. 637). The present edition has been enlarged both as to text 

 and illustrations. 



Information for fruit growers about insecticides, spraying apparatus, and 

 important insect pests, A. L. Quaintance and E. H. Siegler ( U. S. Dept. Agr., 

 Farmers' Bui. 90S (1918), pp. 99, figs. 7^). — This gives directions for the prepa- 

 ration and use of the more important insecticides necessary in combating the 

 various insect pests of orchards, vineyards, etc., as well as other information 

 of use in preventing or reducing insect losses to these crops. Various types of 

 spraying apparatus, nozzles, etc., are described and illustrated, with special 

 reference to their use in orchards and home grounds. A ready reference table 

 for the dilutions of sprays is given, and also a chart showing what sprays may 

 be combined and what plants treated with given sprays. 



The paper concludes with a discussion of the more important insects attacking 

 the apple, pear, quince, peach, cherry, plum, grape, currant, and gooseberry, 

 and gives spraying schedules for the treatment of insects and diseases of the 

 apjjle, peach, and gi-ape. 



Dusting V. liquid spraying, W. S. Bl.mk (Agr. Gaz. Canada, 5 (1918), No. 

 .3. pp. 226. 227). — Tests were conducted by the Experimental Station at Kent- 

 ville, Nova Scotia, in 1917 to find out the relative efiiciency of sulphur dust as 

 compared with the regular lime-sulphur spray in spraying apple trees. 



Under the seasonal conditions of 1917 the dust was equally efficient a fungi- 

 cide as the lime-sulphur and gave better control of cankerworm and other 

 insects. The foliage injury was also less where the dust was used. The esti- 

 mated cost of dusting one 'acre of trees was $3.59 more than for spraying one 



