540 ■ EXPEEIMENT STATION EECOED. 



trated. This system, which has been employed for a number of years by the 

 Viticnltural School at Oppenheim, Hessen, is said to be a labor-saving method 

 for tying young vine canes. 



Early or late pruning-, L. Ravaz (Taille Hdtive ou Taille Tardive. Mont- 

 pellier, 1912, pp. 15). — This comprises a progress report of experiments started 

 in 1905 to determine the effect of pruning grapes at different times of the year 

 on the vigor of the vine and production. The experiments were conducted in a 

 young vineyard planted in 1905. Different rows were pruned as follows: Im- 

 mediately after the vintage; at the time of leaf fall; during the dormant 

 period ; at the time the eyes first appeared ; during the budding period ; and 

 when the terminal shoots were about 2 in. long. The shoots in all cases were 

 cut back to 2 eyes. 



A study of the results to date leads the author to conclude that pruning 

 after the terminal shoots have started serves as a partial protection against 

 spring frosts and increases production without materially affecting the vigor 

 of the vine. The chief value of this late pruning appears to be due to the 

 removal of the outlying buds which are the first to open in the spring. 



The author questions whether the bleeding caused by pruning after the shoots 

 have started is harmful. To avoid this, however, and still prevent the vines 

 from starting too early in the spring all imnecessary growth may be removed 

 during the dormant period, the fruiting shoots shortened somewhat, and all 

 eyes removed except the two nearest the base. Since the basal eyes are affected 

 by the length of the shoot rather than by the number of eyes beyond them 

 they will not start any earlier in the spring for having the remaining eyes re- 

 moved. The author found that sulphate of iron, which has been suggested as 

 a dressing to prevent bleeding, has a tendency to increase the sensibility of 

 the tissues to cold. 



Contribution to the physiology of the graft. — Influence of the stock on 

 scion, G. Riviere and G. Bailhache (Jour. Soc. Nat. Hort. France, 4. ser., IS 

 {1912), June, pp. 360-363). — In continuation of previous investigations (E. 

 S. R., 24, p. 641), experiments with the Chasselas dor§ grape grown on various 

 American stocks and on its own roots are reported. 



The authors conclude that the operation of grafting in itself causes only 

 slight modifications in the nature of the product of the scions. The scion and 

 its products, however, do appear to be modified by the particular stock used, 

 certain stocks increasing and others diminishing the particular characteristics 

 of the scion. 



The hybrid direct bearers in the valley of the Rhone in 1911, A. Des- 

 MOULiNS and V. Villard (Prog. Agr. et Vit. (Ed. VEst-Centre), 33 (1912), Nos. 

 27, pp. 13-21; 28, pp. Jt9-56). — ^As In previous j-ears (E. S. R., 24, p. 545), notes 

 and diita are given of a large number of hybrid direct bearing grapes. The 

 hybrids are classified relative to their resistance to the serious drought in 1911, 

 as well as their resistance to mildew, the nature of the soil best suited for 

 them, and according to the intensity of the coloration of their must. 



Report of the enological station relative to its history, developments, and 

 results obtained from the time of its establishment up to November 31, 1910, 

 V. C. M. DE ZtJniga (Estac. Etiol. Haro Mem., 1910, i)p. 32, pis. 3). — This report 

 reviews the work of the enological station, Haro, Spain, for the period 1892 

 to 1910. 



Report of the enological station of Haro for 1911, V. C. M. de ZtJNiQA 

 (Estac. Enol. Haro Mem., 1911. pp. SI). — This report is similar in character to 

 those notetl in previous years (E. S. R., 25. p. 840), summarizing the progress 

 made in laboratoi-y and field investigations, assistance rendered, etc. 



