The effect of overwintering adult Sunn pest, Eurygaster integriceps Put.(Het.Scutelleridae), feeding on wheat nutrient uptake

In this research، the effects of Sunn pest feeding in different densities were studied on root uptake of NPK in Falat wheat variety. For this purpose، densities of 0 (as control)، 1، 2 and 3 adult per plant released on wheat at both tillering and stem elongation stages. Plants were grown in hydroponic culture and then were fed by overwintering adults for 10 days. The results indicated that the uptake of nitrogen is affected with wheat phonological stages (p<0. 001)، interaction effects of adults sex and densities (p<0. 001)، interaction effects of wheat phenological stages and adults sex (p<0. 05). More decreasing in N uptake observed in stem elongation with 2 males. Phosphor uptake was significantly affected by interaction effects of wheat phonological stages، adults sex and densitiesa (p<0. 05). More decreasing in P uptake observed in stem elongation with 2 females. K uptake was not affected with no interaction effects. In attention to wide variations of N uptake، its appear that nitrogen to be better index to evaluate the indirect effects of E. integriceps feeding on wheat nutrient uptake، at least in short period.