III. Uptake and distribution of radioactive 2,4-D by brush species
AuthorsOliver A. Leonard
Alden S. Crafts
Authors AffiliationsOliver A. Leonard was Associate Botanist in the Experiment Station, Botany Department, Davis; Alden S. Crafts was Professor of Botany and Botanist in the Experiment Station, Davis.
Hilgardia 26(6):366-415. DOI:10.3733/hilg.v26n06p366. December 1956.
Further evidence of the correlation between 2,4-D movement and food movement in plants was provided by tracer studies in seven species of woody plants common to California: coyote brush, arroyo willow, wedge-leaf ceanothus, manzanita, toyon, blue oak, and live oak. In addition to detailed analyses of the tracer studies in these species, the following general conclusions are presented:
Contact injury is a major hindrance to the uptake and transport of 2,4-D.
Soil moisture and root growth are important to 2,4-D transport and response.
In evergreen species the chemical may move throughout the plant for many months, whereas in deciduous species it may move only for relatively short periods.
Different species require different treatments; a single application cannot be expected to control mixed brush populations under California conditions.
Brian R. C., Rideal E. K. On the action of plant growth regulators. Biochem. et Biophys. Acta. 1952. 9:1-18. DOI: 10.1016/0006-3002(52)90114-5 [CrossRef]
Crafts A. S. Studies on the absorption and translocation of 2,4-D by wild morning-glory. Hilgardia. 1956. 26(6):335-365. DOI: 10.3733/hilg.v26n06p366 [CrossRef]
Crafts A. S., Stewart Douglas N. Use of radioactive isotopes of 2,4-D in brush control 1954. pp.131-134. Research Progress Report 14th Western Weed Control Conf. (Mimeo.).
Emrick Walter E., Oliver A. Leonard. Delayed kill of interior live oak by fall treatment with 2,4-D and 2,4,5-T. Jour. Range Management. 1954. 7(2):75-76. DOI: 10.2307/3893861 [CrossRef]
Kuykendall J. Richard, Wallace Arthur. Absorption and hydrolysis of urea by detached citrus leaves immersed in urea solutions. Proc. Amer. Soc. Hort. Sci. 1954. 64:117-127.
Leonard Oliver A., Carlson C. E. Chemical brush control techniques on California range lands 1955. p.12. Progress Report California Div. Forestry. p. (Mimeo.).
Leonard Oliver A., Harvey William A. Chemical control of woody plants in California. California Exp. Sta. Bul. 1956. 755:1-39. DOI: 10.5962/bhl.title.59129 [CrossRef]
Love R. Merton, Jones Burle J. Improving California brush ranges. Revised by R. Merton Love, Dorman C. Sumner, and Victor P. Osterli. California Agr. Exp. Sta. Cir. 1952. 371:1-38. DOI: 10.5962/bhl.title.60953 [CrossRef]
Sumner J. B., Myrback K. The enzymes. 1951. New York, N.Y.: Academic Press, Inc. (See Vol. 1, Part 2, Chapter 24.)
Also in this issue:Is California's irrigated agriculture permanent?
Brushland range improvement… economic values
A San Joaquin and Tulare County study of diarrhea in dairy calves
Effects of irrigation and fertilizer on INIA 66 wheat …yields, protein, and bushel weights
Sunflower varietal resistance to sunflower moth larvae
Tax-induced cattle feeding
I. The mechanism of translocation: Methods of study with C14-labeled 2,4-D
II. Absorption and translocation of 2,4-D by wild morning-glory