SURVIVAL OF IMMATURE TELENOMUS-PODISI (HYMENOPTERA, SCELIONIDAE) AND RICE STINK BUG (HEMIPTERA, PENTATOMIDAE) EMBRYOS AFTER FIELD APPLICATIONS OF METHYL PARATHION AND CARBARYL

Survival (percent emergence) of immature Telenomus podisi Ashmead and rice stink bug, Oebalus pugnax F., embryos after field applications of methyl parathion and carbaryl was determined in split-split plot expe riments. Two stages (2-3 d and 6-8 d old) of immature T. podisi were p laced either 40 or 70 cm above the water in the rice canopy. T. podisi immatures that were located near the top of the rice canopy had reduc ed survival compared with those placed at the lower canopy, regardless of age. Compared with immature T. podisi, rice stink bug embryos in t he upper canopy were significantly more susceptible to the insecticide s. Insecticides had no significant effect on immature T. podisi or sti nk bug eggs located in the lower canopy. Methyl parathion reduced surv ival of T. podisi immatures and rice stink bug embryos more than carba ryl.