314 PLANT PHYSIOLOGY 



Many plants, such as celery and cabbage, when exposed in 

 seedbeds to low temperature for short periods, will later ''shoot 

 to seed" and become unmarketable. 



General References 



Arthur, J. M., and W. D. Stewart. Transpiration of tobacco plants in 



relation to radiant energ}^ in the visible and infra-red. Boyre Thompson 



Inst. Plant Res. Contr., 5 : 483-501. 1933. 

 Bakke, a. L. Studies on the transpiring power of plants as indicated by 



the method of standardized hygrometric paper. Jour. EcoL, 2 : 145- 



173, 1914. 

 Balls, W. L. The stomatograph. Proc. Roy. Soc. (London) Ser. B., 86: 



33-41, 1912. 

 Bartholomew, E. T. Internal decline of lemons. III. Water deficit in 



lemon fruits caused by excessive leaf evaporation. Am. Jour. Botany, 



13: 102-117, 1926. 

 . Certain phases of citrus leaf transpiration. Am. Jour. Botariy, 



18: 765-783, 1931. 

 Barton- Wright, E. C. ''Recent Advances in Plant Physiology." J. & A. 



Churchill, London. 1930. 

 Blackman, V. H. The wilting coefficient of the soil. Jour. EcoL, 2: 



43-50, 1914. 

 . Osmotic pressure, root pressure and exudation. New Phytologist, 



20: 106-115, 1921. 

 Bode, H. R. Beitrage zur Dynamik der Wasserbewegung in den Gefass- 



pflanzen. Jahrh. wiss. Botanik, 62 : 92-127, 1923. 

 BosE, J. C. "The physiology of the ascent of sap. Bose Res. Inst. Trans., 



Vol. 5, Longmans, Green & Company. 1923. 

 Briggs, L. J., and J. W. McLane. The moisture equivalent of soils. 



U. S. Dept. Agr. Bur. Soils Bull. 45, 1907. 

 . and . Moisture equivalent determinations and their appli- 

 cation. Proc. Am. Soc. Agron., 2: 138-147, 1910. 

 . and . The wilting coefficient and its indirect determination. 



Botan. Gaz., 53: 20-37, 1912. 

 . and . The relative wilting coefficients for different plants. 



Botan. Gaz., 53: 229-235, 1912. 

 - and . The water requirements of plants. I. Investigations 



in the Great Plains in 1910 and 1911. II. A review of the literature. 



U. S. Dept. Agr. Bur. Plant Ind. Bull. 284, 1-48; 285, 1-96, 1913. 

 and . Relative water requirement of plants. Jour. Agr. 



Res., 3: 1-63, 1914. 

 . and . Hourly transpiration rate on clear days as determined 



by cyclic environmental factors. Jour. Agr. Res., 5: 583-649, 1916. 

 and H. L. Shantz. Comparison of the hourly evaporation rate of 



atmometers and free water surfaces with transpiration rate of Medicago 



saliva. Jour. Agr. Res., 9: 277-292, 1917. 



