การระบาดของเพลี้ยไฟในมังคุดที่ปลูกแบบพื้นที่เชิงเดี่ยวและแบบผสมผสาน

Abstract

Surveys of thrips population by using yellow sticky traps in mangosteen grown in single and mixed cropping systems were conducted twice a month in a farmerûs orchard at Phromkeeree district, Nakhon Sri Thammarat province Thailand during April 2005 to January 2006. Almost every month, average number of thrips in single cropping system was higher than that in mixed cropping system. Population of thrips peaked in April 2005 which synchronized with the flowering and young fruiting stages and with the highest average temperature of 32.5 °C in April. Average numbers of thrips in single and mixed cropping systems were 1,437.7±139.2 and 342.1±54.9 thrips/trap, respectively.