19171 HORTICULTURE. 535 



the greater portion of the weeds infesting wheat fields, but in most cases 

 increased the yield sufficiently to compensate for the expense of the treatment. 

 Where grain was sown in rows it was found better to hoe or cultivate, but 

 where the croii was sown broadcast and the weeds were numerous the treatment 

 witli sulphuric acid solution was preferrable. The treatment was not useful 

 when the dominant weed species belonged to the Graminese, Liliacese, or other 

 families equally resistant to the action of dilute sulpliuric acid. 



It was not found that the sulphuric acid treatment is efficient in controlling 

 foot rot of wheat. 



Ferrous sulphate control of hedge mustard and wild mustard in Bavaria, 

 1904-1915, L. HiLTNEB {Prakt. Bl. Pflanzenhau u. Sehuts, n. ser., 14 (1916), No. 

 2, pp. 13-16, fig. 1). — This article discusses the use in Bavaria of spraying 

 machinery in the control of the wild mustards with ferrous sulphate. 



Ragwort, P. M'Govekn (Dept. Agr. and Tech. Instr. Ireland Jour., 16 {1916), 

 No. 3, pp. ^11-^1). — This article deals with the life history and eradication 

 of ragwort {Senecio jacohcea) in Ireland. This weed is described as a biennial, 

 propagated only by seed. 



HORTICULTURE. 



What, where, when, and how to plant, E. E. Bohlendeb (Tippecanoe City, 

 Ohio: [Author}, 1914, 2. ed., rev., pp. 86, figs. 74). — A concise manual of informa- 

 tion dealing with the culture of berry plants, roses, shrubs, evergreens, vines, 

 and perennials. 



Round the year in the garden, H. H. Thomas (London and New York: Cas- 

 sell d Co., Ltd., 1916, pp. XII +275, pis. 76). — A popular treatise on gardening 

 dealing with the principal flowers, fruits, and vegetables of the various seasons 

 and indicating the chief garden work to be done each month. 



The home vegetable garden, C. W. Waid (Mich. Agr. Col., Ext. Div. Bui. 

 4 (1916), pp. 35, figs. 10). — A popular cultural treatise dealing with the farmer's 

 garden, the suburban garden, and the city garden. 



Growing seeds for the world, A. Kbuhm (Card. Mag. [N. T.I, 24 (1916), No. 

 5, pp. 164-167, figs. 11). — A popular historical account of the American garden 

 seed industry. 



Nitrate of soda spray for fruit bearing, W. H. Volch (Pacific Rural Press, 

 93 (1917), No. 3, p. 72). — Popular suggestions on the spraying of donnant fruit 

 trees with nitrate of soda, based on investigations conducted by the author 

 in cooperation with Ballard (E. S. R., 30, p. 640). 



Results from spraying in Nova Scotia, G. E. Sanders and W. H. Bkittain 

 (Canada Dept. Agr., Ent. Branch Circ. 7 (1916), pp. 11, pi. 1). — In this circular 

 the authors present some actual results obtained by owners spraying for 

 profit in their own orchards in the Annapolis Valley, Nova Scotia. The data 

 are discussed under the general headings of increase in quality of apples due 

 to spraying, increase in quantity of apples due to continued spraying, economy 

 in handling clean fruit, and profits in spraying. 



The cost of spraying, F. I. Odell (Fruit Grower, 28 (1917), No. 1, pp. 3, 27, 

 fig. 1). — An analysis is given of spraying expenses in some apple orchards in 

 southern Indiana, including tables showing the labor, materials, and cost 

 for spraying one acre of a 30-year-old orchard in 1915, and the maintenance 

 spraying expense for 20 acres for an 8-year period. 



The apple as affected by varying degrees of dormant and seasonal pruning, 

 W. H. Aldeeman and E. C. Aitchteb (West Virginia Sta. Bui. 158 (1916), pp. 

 3-56, figs. 22) . — ^A preliminary report of a pruning experiment covering a period 

 of four years and embracing 366 apple trees of various ages. Study has been 



