Accession Number:

AD0360646

Title:

OCONUS DEFOLIATION TEST PROGRAM

Descriptive Note:

Semiannual rept. 1 Apr-30 Sep 64

Corporate Author:

ARMY BIOLOGICAL LABS FREDERICK MD

Personal Author(s):

Report Date:

1964-09-30

Pagination or Media Count:

35.0

Abstract:

A test program of aerial spray applications with purple, pink and a group of 8 defoliants, desiccants, and herbicides was initiated to evaluate effectiveness of these chemicals on a mixed forest of broadleaf evergreens and deciduous trees representative of Southeast Asian vegetation. Applications were made with a C-45 equipped with a spray distribution system including a 32-ft boom with Tee Jet nozzles under wings and fuselage and an airdriven pump. Evaluations of vegetation response to chemical treatments were made at periodic intervals. Preliminary observations of defoliation response indicate that 1 Application of purple and pink gave defoliation superior to that of other chemicals tested in observations made 4 months after treatment. 2 Purple at rates as low as 1.2 galacre gave effective defoliation 70-85 as evaluated 4 months after treatment. Moderate defoliation 30-60 occurred 1 month after treatment with purple at 2.5 to 3.5 galacre during the rainy season. 3 Diquat 4 lbacre, cacodylic acid 7 lbacre and dicamba amine 7 lbacre gave moderate defoliation response 30-50 1 month after treatment. These were the only active defoliants of the group tested. Author

Subject Categories:

  • Chemical, Biological and Radiological Warfare

Distribution Statement:

APPROVED FOR PUBLIC RELEASE