208 SOIL SCIENCE [BoT. Absts., Vol. VII, 



FERTILIZATION 



1408. Burgess, J. L. Part I. The relative availability of acid phosphate and the native 

 soil phosphates in the presence of pulverized limestone. Part II. Future of the agricultural 

 lime industry. Bull. North Carolina Dept. Agric. 4P: 5-24. 1920. — The first part is a com- 

 pilation of opinions on the influence of lime in rendering potash available. The second part 

 is an expression of opinion that lime is to be regarded as a fertilizer element. — F. A. Wolf. 



1409. HiBBARD, R. P., AND S. Gershberg. The biological method of determining the fer- 

 tilizer requirement of a particular soil or crop. Michigan Acad. Sci. Ann. Rept. 21 : 223-224. 

 1919.— See Bot. Absts. 6, Entry 1419. 



1410. Jordan, W. H. Soil studies : I. The influence of fertilizers upon the productiveness 

 of several types of soil. II. The influence of fertilizers and plant grovyth upon soil solubles. 

 New York Agric. Exp. Sta. [Geneva] Bull. 473. 27 p. 1920.— Part I deals with a series of 

 forcing-house experiments in which peat, stable manure, and commercial fertilizers, in vary- 

 ing proportions, were applied to several kinds of soil in which barley was grown. Perhaps the 

 most interesting feature of these experiments was the fact that a sandy soil of an inferior 

 type for general cropping produced twice as much dry substance in boxes to which no fertilizer 

 was applied as did a clay loam soil notably fertile in field culture. In Part II an account is 

 given of experiments in which it was shown that the application of soluble compounds of 

 nitrogen, phosphorus, and potassium to various kinds of soil increased the proportion of 

 water soluble in the soil. It was also shown that a growing crop (barley) utilizes the soluble 

 material and rapidly reduces the quantity of such material in the soil even while the plants 

 are in an early stage of growth. — F. C. Stewart. 



1411. Maze, P., Vila and Lemoigne. Action de la cyanamide et de la dicyanodiamide 

 sur le developpement du mais. [Action of cyanamide and dicyanodiamide on the development 

 of maize.] Compt. Rend. Acad. Sci. Paris 169:804-807. 1 fig. 1919.— See Bot. Absts. 7, 

 Entry 1333. 



1412. Pltjmmeh, J. K., and Wolf, F. A. Borax injury to crops. North Carolina Dept. 

 Agric. Bull. 41": 1-20. Fig. 8. 1920. — Field obser^^ations made in 1919 indicated that con- 

 siderable damage to crops in North Carolina had resulted from the use of fertilizers containing 

 borax. The injury manifested itself by death and stunting of plants so that the stands 

 were not uniform, plants of the same age differed in size, and yields, in consequence, were 

 greatly decreased. — The present investigation with corn and cotton on Cecil clay loam and 

 cotton and tobacco on Durham sandy loam in pot cultures agrees with field observations in 

 showing that plants are more susceptible to injury on the lighter soils. — In sandy soil, as 

 little as one pound of anhydrous borax per acre injured tobacco and no cotton grew in any 

 pots containing over five pounds per acre. In clay soil, both cotton and corn showed marked 

 injury when the amounts of borax exceeded seven pounds of anhydrous borax per acre, but the 

 plants survived in these series.— The tobacco plants which were poisoned in the third trans- 

 planting gradually recovered and after two months were apparently normal, thus presenting a 

 condition similar to that found in the field. — The corn plants on sandy soil, to which borax at 

 the rate of 5 pounds per acre was applied, showed considerable injury whereas, with an 

 application of 10 pounds per acre, they were entirely lacking in green color and soon died. — 

 Interference with color formation by boron does not appear to be related to the assimulation 

 of iron nor to plastid formation. — There is no reason to believe borax will remain in the soil 

 and cause damage to crops succeeding those which have been injured by borax. Borax dis- 

 appears from the zone occupied by roots by leaching. — F. A. Wolf. 



1413. ScHREiNER, Oswald, B. E. Brown, J. J. Skinner, and M. Shapovalov. Crop 

 injury by borax in fertilizer. U. S. Dept. Agric. Circ. 84: 3-35. 25 fig. 1920.— See Bot. 

 Absts. 6, Entry 1431. 



