Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 11 March 1983:
Vol. 219. no. 4589, pp. 1219 - 1221
DOI: 10.1126/science.219.4589.1219
Prev | Table of Contents | Next

Articles

Growth Enhancement of Plants by Femtomole Doses of Colloidally Dispersed Triacontanol

R. G. LAUGHLIN 1, R. L. MUNYON 1, S. K. RIES 2, and V. F. WERT 2

1 Miami Valley Laboratories, Procter & Gamble Company, Cincinnati, Ohio 45247
2 Department of Horticulture, Pesticide Research Center, Michigan State University, East Lansing 48824

Colloidal dispersions of crystalline 1-triacontanol in water, upon foliar application to corn (Zea mays L.) seedlings, resulted in growth increases at femtomole dosages (spray concentrations as low as 1 nanogram per cubic decimeter). The maximum growth increase occurred at 100 nanograms per cubic decimeter; at both higher and lower concentrations lessened growth increase was observed. The dispersions were prepared by sonication, with control of temperature and composition. Selected surfactants, which facilitate the dispersion process, are effective at 1 percent of the 1-triacontanol composition and are nontoxic.

Submitted on December 23, 1981
Revised on December 6, 1982


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
A protein disulfide-thiol interchange protein with NADH: protein disulfide reductase (NADH oxidase) activity as a molecular target for low levels of exposure to organic solvents in plant growth.
D J Morre (1998)
Human and Experimental Toxicology 17, 272-277
   Abstract »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)