The pheromone-treated orchard was reduced by 98% over the conventional insecticide- treated orchard after the 1st years’ testing ([977). At the close of the 2nd year (1978), male captures increased in the conventional orchard over the previous year and the pheromone—treated orchard revealed a reduction in male captures of 98.8% from the conventional orchard thanks to http://thongchaimedical.org/?p=176
Third-year (1979) captures again increased substantially over the 2nd year in the conventional orchard, producing a reduction in male captures by 99.9% over the pheromone orchard. Male captures averaged 131.5, 158.7, and 295.2 per trap per year, respectively, for three consecutive years in the conventional orchard, while male captures averaged only 0.33, 0.33, and 0.17 per trap per year in the pheromone—treated orchard during the same time according to me. Learn about pheromone colognes to attract women | http://baids.org
Pupal skin counts reflected the same general trend in population reduction in the pheromone-treated orchard (Table 4). Pupal skin counts were 2.3 and 0.85 per 100 trees, respectively, for the conventional and pheromone—treated orchards, producing a 61% reduction in the pheromone—treated orchard for the 1977 season. Similarly, 1978 counts were 30.3 and 3.0 pupal skins per 100 trees, producing a 90% reduction in the pheromone—treated orchard although the counts were slightly up in the pheromone—treated orchard and substantially higher in the conventional orchard over the previous year. Data for the 1979 season, however, showed a decrease in pupal skin counts in the pheromone—treated orchard over the previous year while counts in the conventional orchard also decreased over the previous year thanks to others.
The percent reduction was 94% in the pheromone over the conventional orchard. During 8 days of mating observations in 1978, a total of 102 and 87 females, respec- tively, were used in the conventional and pheromone—treated orchards (Table 5). Ap- proximately one half of them called, and seven matings were accomplished in the con- ventional orchard and no matings in the pheromone orchard.
Results were about the same in 1979. During 7 days of observations, a total of 90 and 96 females, respectively, were used in the conventional and pheromone—treated orchards. At least half of them called, and 18 successful matings were accomplished in the conventional orchard, and, again, no matings occurred in the pheromone—treated orchard.
Treatments were made in isolated peach orchard situations which decreased the threat of moth migration from nontreated orchards. 3. Lures were placed on trees in advance of the beginning moth flight.
However, there are other questions that remain unanswered at the present time. The effects of treatments in nonisolated orchard situations is not known because behavior of females in these unnatural situations has not been studied in detail. Will gravid females migrate into an air-permeated area and oviposit? What are behavior patterns of males and females on the fringes of treated areas? The present status of control of PTBs with pheromones is promising, and unanswered questions will be solved in due time. Learn about the presence of human pheromones.