HORTICULTURE. 145 



vineyards are discussed with regard to their hardiness, productiveness, resist- 

 ance to phylloxera, mildew, etc., aud the content of the wine made of the must 

 in alcohol and sulphuric acid. 



Fertilizer experiments with grapes at Graves [France |, H. Verdie (Rev. 

 ]'it., 27 (J'JOl). Xo. lO-'i, pp. 637-6GU). — This is a preliminary report on experi- 

 ments conducted for the past 3 years to determine an economic fertilizer for 

 the grape region of Gi'aves. The ingredients u.sed were in the following pro- 

 portion-;: Dried hlood 100 kg., sulphate of potash 200 kg., basic slag 800 kg., 

 plaster 400 kg. The total cost of this fertilizer w^as computed as 137 francs 

 ($i'G.44). Nine plats were used in the experiment, including the check plat, 

 and this formula was varied on different plats by the omission of one or more 

 elements. The soil in this region is sandy and noncalcareous. 



A table is given showing the nature of the fertilizers used in each plat, the 

 weight of 100 fruits, the percentage of skins, seeds, pulp, and juice, the weight 

 of dry matter for 100 gm. of fresh berries, and the percentage of phosphoric 

 acid and soluble potash. Another table shows the richness of the must of 

 grapes from the various plats in grams of sugar and sulphuric acid per liter. 



From these experiments the author concludes that growers are warranted in 

 using chemical fertilizers in the manuring of vines for the production of high- 

 grade wines. Although nitrogen increased the vigor of the vines, where the 

 amount used was large the quality of the must appeared to be less rich than 

 in i)lats where the nitrogen content was small. It is believed that potash has 

 a decided influence on the quality of the fruit and must. To secure the best 

 results the author reconunends the use of the complete formula employed in the 

 experiment, including the lime. 



Cold storage of grape vines, E. H. Pratt {Fruit Groiccr, 18 (1007), No. 

 7, p. 3). — A brief summary is given of the author's report at the meeting of the 

 American Association of Nurserymen at Detroit as to an experiment con- 

 ducted to test the value of cold storage for carrying nursery stock over from 

 one season to the next. 



In October, 1900, some grape vines were dug and placed in the ordinary 

 storage house, where they remained all winter. On June 7, 1001, 3 boxes of 

 these vines were placed in cold storage, 2 of which were kept at a temperature 

 of 33° to 34° and the other at a temperature of 28°. In the latter part of 

 September, after having been in cold storage 3 months and 19 days, the vines 

 were replaced in the nursery storage house and carried over until the spring 

 of 1902. A portion were then used in filling orders in March, 1902, but in order 

 to test the value of the vines about 1,200 were retained by the firm and planted 

 late in the following May. They grew well and were dug in the fall of 1902 and 

 used in filling orders. The test appears to have been successful in every way. 

 Further successful efforts in the cold storage of nursery stock have been noted 

 (K. S. R., 17, p. 4G7). 



Cold storage, G. II. McKay {Proc. N. J. Hort. Soc, 32 (1907), pp. 127-135).— 

 In this paper the author discusses conditions which should be observed in put- 

 ting fruit in cold storage. In respect to the Kieffer pear it is stated that this 

 fruit will stand a temperature of 32° F., and it is believed that much of the 

 disrepute into which this pear has fallen is due to its having formerly been 

 stored at a considerably higher temperature. 



Considerable comparative data are also given with reference to the profits 

 derived from the cold storage of fruit. 



Cool storage and fruit fly {.Join: Dept. Agr. West. Aust., 15 (1907), No. 'i. pp. 

 252, 253). — A brief account, with tabular data, is given with regard to experi- 

 ments conducted by T. Hooper on the destruction of the fruit fly maggot in 

 fruit by means of cold storage. In previous experiments along this line, the 



