Mississippi State University, Mississippi State, MS
Pages: 11 Published: Jan 1985
Increased use of vegetable oils as carriers for insecticide sprays has stimulated additional research related to the efficacy of aerial application of insecticides. The efficacy of insecticides applied as ultra-low-volume (ULV—2.34 L/ha [0.25 gal/acre]) vegetable oil sprays was compared with standard volume (SV—18.71 L/ha [2 gal/acre]) water sprays in field experiments involving a complex of cotton insect pests at several locations in Mississippi during 1981 to 1983. Results suggest that insecticides applied as ULV-vegetable oil and SV-water sprays are equally efficacious against cotton insect pests.
Bioassay data and spray deposit characterizations were used to study more accurately differences in ULV-vegetable oil and SV-water sprays. Spray droplets associated with ULV-vegetable oil sprays tend to be smaller and deposited in a less dense pattern than those of SV-water sprays. Bioassay and residue analyses data indicate that ULV-vegetable oil and SV-water sprays deposit comparable amounts of active ingredient on the target area.
insecticide, efficacy, vegetable oil, ultra-low-volume sprays
Paper ID: STP32861S