Controlled release of water-soluble herbicides

Thesis/Dissertation · Tue Jan 01 04:00:00 EST 1985

OSTI ID:6070649

Riggle, B D

Pine kraft lignin was used to control the release of metribuzin (4-amino-6-tert-butyl-3-(methylthio)-as-triazin-5(4H)-one) and alachlor (2-chloro-2',6'-diethyl-N-methoxy-methyl acetanalide). Soil thin layer chromatography (TLC) analysis using /sup 14/C-metribuzin and /sup 14/C-alachlor demonstrated that NB-5203-58 series and PC940 series kraft lignins could retard the mobility of both herbicides after multiple soil TLC plate developments with water. Soil column chromatography analysis demonstrated that PC940C could retard the mobility of both herbicides after soil column water leaching by positioning the herbicides in the top portion of the soil column where the PC940C-herbicide mixture had been applied. There was a concentration effect where, as more PC940C was used, more /sup 14/C-labelled herbicide was retained in the top portion of the soil columns. Soil column chromatography and soil TLC plate analysis demonstrated that /sup 3/H-PC940C was immobile. Finally, PC940C significantly reduced metribuzin related phytotoxicity to field and greenhouse grown soybeans (Glycine max (L.) Merr.) which had been treated with PC940C rates of 0.77 and 1.15 L/ha and metribuzin rates of 0.42 and 0.84 kg/ha. The results for /sup 14/C-metribuzin and /sup 14/C-alachlor as well as the reduction in metribuzin related phytotoxicity to soybeans suggests that PC940C can effectively control the release of metribuzin and alachlor.

• Research Organization: Michigan State Univ., East Lansing (USA)
• OSTI ID: 6070649
• Country of Publication: United States
• Language: English

Related Subjects

510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
510301 -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- Soil-- (-1987)
54 ENVIRONMENTAL SCIENCES
BACTERIA
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBOHYDRATES
CARBON 14
CARBON ISOTOPES
CHROMATOGRAPHY
DISSOLUTION
ENVIRONMENTAL EFFECTS
ENVIRONMENTAL TRANSPORT
EVEN-EVEN NUCLEI
GLYCINE HISPIDA
HERBICIDES
INHIBITION
ISOTOPE APPLICATIONS
ISOTOPES
LEACHING
LEGUMINOSAE
LIGHT NUCLEI
LIGNIN
MASS TRANSFER
MICROORGANISMS
NUCLEI
ORGANIC COMPOUNDS
PESTICIDES
PLANTS
POLYSACCHARIDES
RADIOISOTOPES
RHIZOBIUM
SACCHARIDES
SEPARATION PROCESSES
SOILS
THIN-LAYER CHROMATOGRAPHY
TRACER TECHNIQUES
YEARS LIVING RADIOISOTOPES