Trap Pheromones 2015


About one half of the adhesive carrier that was to be used was poured into a polyethylene container. Then the gossyplure flakes were added and mixed thoroughly with a motor-driven rotary mixer. Thereafter, TF flakes, virelure flakes, or Z-9 TDF flakes were added, and the mixing procedure was repeated while the rest of the adhe- sive carrier was poured into the container. The mix of pheromones and adhesive carrier was then transferred to a 3.8-!, wide mouth, screw top, plastic container for attach- ment to the dispensing machine mounted on an airplane. Check out pheromones at and

The rate at which the pheromone flakes were being dispensed was determined in four tests. Clear plastic tarps, four per test, were spread on the ground approximately 14 m apart. Tarps were 0.8 to 0.9 m wide and 30 m long. After the plane with mounted flake dispenser and pheromone formulation flew approximately 6 to 8 m above the ground across the center of the four tarps, the tarps were examined and the distances between the first flakes from each end of each tarp were measured to determine the swath width. In Test 1, 18.3 m of tarp, beginning 6.1 m from each end, were separated into six 3-m sections, and the number of flakes in each section was counted, and the distances between flakes were measured. In Tests 2, 3, and 4, the same procedure was followed, but three 3-m sections of each tarp were randomly selected for counting numbers of and distances between flakes.

Also, emission rates of gossyplure, TF, and virelure from the plastic laminate flakes were determined for each lot of the product used in the field tests. A 2.54 cm’ portion of the products was cut into 64 equal flakes (about 0.04 cm‘), and the flakes were strung on a fine wire and held unsheltered on the University of Arizona Cotton Re- search Farm (CRC) at Phoenix. Five such samples of each formulation were prepared. The first samples were forwarded to Hercon Group, Health-Chem Corp., at the start of each aging study for chemical analysis and at the end of each week thereafter f6r 4 weeks. The amounts of residual chemical were determined in each case by gas chro- matographic analysis. This test was conducted twice with beginning dates of May 30 and July 30. Learn more at

The first applications were made on May 16, 1979, with the aerial flake dispensing unit manufactured and described by Thoughts Development, Inc.* Gossyplure — in combination with TF, virelure, or Z-9 TDF — was applied every 13 to 19 days there- after until September 27. Beginning August 23, additional applications of TF, virelure, and Z-9 TDF alone were made weekly until October 4 except that Z-9 TDF was applied for the last time on September 20.

Pink bollworm male moth Delta traps“ had been placed in each quadrant of each experimental field on April 4, 1979. These traps were initially baited with Hercon® formulated gossyplure baits, but on July 5, and thereafter, they were baited with a rubber septa containing 1 mg of a 1:1 ratio of Z,Z to Z,E-isomers of gossyplure. All traps were maintained at the tops of the plants. Also, on May 15, two of the Delta® traps in diagonally opposed quadrants in each field were replaced with traps that caught live pink bollworm males.” The Delta® traps and the baits in all traps were replaced at 2 to 4 week intervals, and Delta® traps were also replaced after 50 or more males were caught. Traps were checked and moths counted before each treatment. Learn more at

Likewise, traps for tobacco budworms”° containing Hercon® polymeric plastic lam- inated virelure baits had been placed in two diagonal quadrants of each field on April

18. On May 10, a third cone trap baited with five live female tobacco budworm moths was placed in a third quadrant of each field. On June 16, a seven-component tobacco budworm pheromone laminate-‘° bait was substituted for one of the virelure baited traps in each field

Leave a Reply