Accession Number : AD0754590

Title :   Aquatic Plant Control Program. Technical Report 2. Response of Aquatic Weeds to Laser Radiation.

Descriptive Note : Final rept.,

Corporate Author : ATHENS COLL ALA DEPT OF BIOLOGY

Personal Author(s) : Couch,Richard W.

Report Date : DEC 1972

Pagination or Media Count : 72

Abstract : Preliminary experiments in 1968 indicated that water hyacinths and possibly other aquatic plants could be controlled by 10.6 micron laser radiation. Two effects were noted: an immediate plasmolysis directly proportional to laser energy and a secondary effect at lower levels of irradiation that resulted in death of the plant after a period of time. Studies made in 1969 indicated that split applications of laser energy were not more effective than continuous treatment. Plant count evaluations were significant at a minimum level of 0.5 joules per sqcm(J/sgcm). Histological examination of irradiated leaf tissue did not show extensive cell damage due to laser treatment. Studies made in 1970 indicated that twice-irradiated plants were affected at a level of about 70J/sqcm. (Author)

Descriptors :   (*PLANTS(BOTANY), PEST CONTROL), (*LASERS, PLANTS(BOTANY)), RADIATION EFFECTS, PLANT TISSUE, CELLS(BIOLOGY), HISTOLOGICAL TECHNIQUES, GROWTH(PHYSIOLOGY), CARBON DIOXIDE, NEODYMIUM, PHOTOSYNTHESIS

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE