Studies on seasonal cyclicity of Bactrocera correctus Bezzi in mango and sapota orchards using methyl eugenol trap.
Sushil Kumar, Patel C. B., Bhatt R. I.
Author Affiliation: Agricultural Experimental Station, Gujarat Agricultural University, Paria, Taluka Pardi, District Valsad, Gujarat-396 145, India.
Gujarat Agricultural University Research Journal 22 : 68-74
Abstract : In a field study in 1992-94 in Gujarat in mango and sapota [Manilkara zapota, sapodilla] orchards, the seasonal activity of Bactocera correctus [B. correcta] was examined using traps baited with methyl eugenol. B. correcta were trapped throughout the year in the mango and sapota orchards. In mango orchards, trappings peaked during the second fortnight of April (453 fruit flies/trap) and the second fortnight of May (483 fruit flies/trap). Major activity of the pest occurred from March to June, coinciding with the fruiting period. The pest activity was positively correlated with temperature (maximum, minimum and average). Other environmental factors did not have any significant impact. In sapota orchards, the pest activity coincided with the fruiting period during April to September. The trappings peaked during the first fortnight of June (580 fruit flies/trap). The pest activity was positively correlated with temperature (minimum and average), relative humidity (evening and average) and negatively with sunshine hours.