Chalky spot damage on red lentil is the most important problem waiting for a solution regarding plant health at lentil cultivation in Southeast Anatolia Region, Turkey. The stink bugs, Piezedorus lituratus (F.) and Dolycorus baccarum L. were subjected to trials in cages and in sprayed and unsprayed plot trials in open lentil fields and fields containing windrowed lentils after harvesting. The study revealed that P. lituratus and D. baccarum feeding on red lentil caused chalky spot damage. Average damage to lentil seeds caused by P. lituratus was 13% and 7.8% and by D. baccarum was 4.9% and 2% in 2010 and 2011, respectively. There was a positive relation between P. lituratus density and chalky spot damage (r =0.788, r 2 =0.621, P=0.000). The study also showed that after the harvesting, the stink bugs gathered under windrowed lentils and continued feeding and causing chalky spot damage. The damage in unsprayed windrowed lentils (6.60%) was approximately 12-fold higher than that in sprayed windrowed lentils (0.57%). Study suggests conduction of future work on environmental friendly control methods of stink bugs and alternative harvesting methods.

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Kırmızı mercimekte zararlı Dolycoris baccarum (L.) ve Piezodorus lituratus (F.)' a karşı deltamethrin'in biyolojik etkinliği Efficacy of deltamethrin against Dolycoris baccarum L. and Piezodorus lituratus (F.

The pheromone traps were hanged on the trees in orchards at the beginning of April. The traps were checked twice a week until the first moth was caught, then they were checked weekly up to the end of season. The level of damage was determined by examining leaves, blossoms and fruit. Sampling was conducted 3 times in a year. The shoots 15-20 cm in length were taken from 4 directions of the trees in each orchard to estimate the damage caused by phyllophagous and anthophagous generation. Five olive fruit from each direction (total 20 from each tree) of the tree were sampled to determine the damage on fruit from 10 trees in each orchard for the carpophagous generation. As a result, it is found that adult moth activity begins in early April. Adults of first and second generation were seen together until mid-June. Activity of third generation adult started at the beginning of September until mid-November. The population curves were plotted based on weekly catches. The pest passes 3 generation a year. Damage level was different in each orchard and year. Damage level estimated, in general caused by phyllophagous, anthophagous and carpophagous were 3-5%, 0.3-3%, 0.5-3% respectively. Although adult moths that caught on trap were high, the damage level was very low. In conclusion this pest could be potencial pest in GAP region for now.