February, 1920] HORTICULTURE 17 



325. Federal Horticultural Board. U. 8. Dbpt. Agbic. Amendment No. 1 to 

 regulations supplemental to notice of quarantine No. 37. Service :iml regulatory announce- 

 ments 60: 21-22. 1919. See Bot. Absts. 2, Entry 1291; 3, Entry 399. 



326. Gladwin, F. E. A test of commercial fertilizers for grapes. New York Agric. Exp. 

 Sta. [Geneva] Bull. 458:27^13. 1919. — These tests show that nitrogen, phosphorus and 

 potassium have had a marked beneficial effect upon wood growth, yield and quality of fruit. 

 The data indicate that of the three elements nitrogen has been most helpful. Potassium has 

 given more pronounced results than phosphorus up to the present, although the latter has 

 had a more beneficial effect upon the green-manure crops in the vineyard. Nitrogen has not 

 only affected favorably the growth of wood, but it has increased the fruit and given larger 

 berries and clusters. Phosphorus and potassium have increased the production of wood and 

 fruit, but have not influenced the quality of the fruit to the same extent as the nitrogen. 

 Potassium has caused earlier ripening of the foliage than the other elements. Even though 

 the same number of canes be tied up for fruiting purposes, the data show that the fertilizer 

 plats have produced a decided gain of fruit over the unfertilized. The foliage, after the 

 first few years, has been of better color and size in the plats to which nitrogen was applied 

 while the phosphorus and potassium plats ranked second and the check plat a poor third. — 

 F. E. Gladwin. 



327. Gould, H. P., and George M. Darrow. Growing fruit for home use. U. S. Dept. 

 Agric. Farmers' Bull. 1001. 40 p., 26 fig. 1919. 



328. Gould, H. P. Fig growing in the South Atlantic and Gulf States. U. S. Dept. Agric. 

 Farmers' Bull. 1031. 47 p., 24 fig. 1919. 



329. Hadley, O. M. Improved methods in pecan propagation. Amer. Nut. Jour. 10:4. 

 1919. — A general discussion is given of root pruning of nursery trees to secure better root 

 systems for transplanting, and its relation to pecans. This is followed by a discussion of the 

 possible desirability of double-working pecan varieties to overcome differences in growth. 

 The claim is made that the effect of scion on stock is very pronounced. Observation of over 

 100 trees each of Delmas and Moore in north Florida shows that the former makes a vigorous 

 stocky growth and an unusually fine root system, while the latter makes a decidedly less 

 vigorous and very much inferior root system. The belief is expressed that the difficulty 

 with the Moore could be largely overcome by double-working on the Delmas to give 

 increased vitality. This is based on experiments with double-working the Schley, Pabst 

 and Money on Delmas, the results being entirely satisfactory in every case. It is believed 

 that this practice will prove to be commercially profitable. — R. H. Taylor. 



330. Headlee, Thomas J. Control of the principal insects injurious to the apple above 

 ground. Massachusetts State Dept. Agric. Circ. 9. 11 p. 1919. [Reprinted without change 

 in: Massachusetts Fruit Growers' Assoc. Ann. Kept. 1919] This is a popular summary of 

 the most recent methods of spray control of apple insects in the northeastern United States. — 

 J. K. Shaw. 



331. Hedrick, U. P. Factors affecting hardiness in fruits. Massachusetts State Dept. 

 Agric. Circ. 6. 10 p. 1919. [Reprinted without change in : Massachusetts Fruit Growers' 

 Assoc. Ann. Rept. 1919]. — This is a popular discussion of winter injury to fruit trees and 

 means of avoiding it. — J. K. Shaw. 



332. Jordan, W. H. Director's report for 1918. New York Agric. Exp. Sta. [Geneva] 

 Bull. 457. 25 p. 1918.— See Bot. Absts. 3, Entry 856. 



333. Otis, A. W. Fruit market possibilities in the export trade. Massachusetts State 

 Dept. Agric. Circ. 7. 7 p. 1919. [Reprinted without change in: Massachusetts Fruit 

 Growers' Assoc. Ann. Rept. 1919]. 



