HIDROGENIONIC POTENTIAL (pH) OF THE ATTRACTANT, TRAP DENSITY AND CONTROL THRESHOLD FOR Ceratitis capitata (DIPTERA: TEPHRITIDAE) ON HAMLIN ORANGES IN SAO PAULO CENTRAL REGION, BRAZIL

作者：Branco Paiva Paulo Eduardo; Postali Parra Jose Roberto

来源：Revista Brasileira de Fruticultura, 2013, 35(2): 464-470.

• true fruit flies
• protein bait
• damage
• IPM
• Citros

This study evaluated the effect of initial pH values of 4.5, 6.5 and 8.5 of the attractant (protein bait) Milhocina (R) and borax (sodium borate) in the field, on the capture of fruit flies in McPhail traps, using 1, 2, 4 and 8 traps per hectare, in order to estimate control thresholds in a Hamlin orange grove in the central region of the state of Sao Paulo. The most abundant fruit fly species was Ceratitis capitata, comprising almost 99% of the fruit flies captured, of which 80% were females. The largest captures of C. capitata were found in traps baited with Milhocina (R) and borax at pH 8.5. Captures per trap for the four densities were similar, indicating that the population can be estimated with one trap per hectare in areas with high populations. It was found positive relationships between captures of C. capitata and the number of Hamlin oranges damaged, 2 and 3 weeks after capture. It was obtained equations that correlate captures and damage levels which can be used to estimate control thresholds. The average loss caused in Hamlin orange fruits by C. capitata was 2.5 tons per hectare or 7.5% of production.

• 出版日期2013-6