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    Chalky spot damage caused by stink bugs on red lentil seeds in Southeast Anatolia Region, Turkey
    (Agricultural Research Communication Centre, 2016) Mutlu, Cetin; Karaca, Vedat; Eren, Sedat; Buyuk, Musa; Gozuacik, Celalettin; Duman, Mehmet; Bayram, Yunus
    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 trialsincages 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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    Determination of population changes of Laodelphax striatellus (Fallen, 1826) and Sogatella vibix (Haupt, 1927) (Hemiptera: Delphacidae) by using different sampling methods in second crop maize in Diyarbakir province
    (Entomological Soc Turkey, Ege Univ, 2010) Sertkaya, Erdal; Mutlu, Cetin; Bayram, Ahmet; Bayram, Yunus; Guclu, Saban
    The aim of present study was to investigate population changes of Laodelphax striatellus (Fallen, 1826) and Sogatella vibix (Haupt, 1927) Delphacidae (Hemiptera) by using yellow sticky traps and D-Vac in second crop maize fields of Diyarbakir province in 2005 and 2006. The first individuals of L. striatellus were recorded in the traps in early july and its higher densities were caught in yellow sticky traps than that of D-Vac. Similarly, S. vibix individuals were first seen in the middle of july, while its highest densities were caught by both traps in august. Mean numbers of L. striatellus and S. vibix were significantly changed by the years of study, sampling weeks, sampling fields and the sampling methods utilized. However, population densities of L. striatellus were not different between two locations in contrast to S. vibix population.
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    The effect of ridge planting and earliness of durum wheat varieties on sunn pest (Eurygaster spp.) damage and grain yield
    (Elsevier Sci Ltd, 2012) Gursoy, Songul; Mutlu, Cetin; Urgun, Murat; Kolay, Betul; Karaca, Vedat; Duman, Mehmet
    Sunn pests (Eurygaster spp.) are among the most important insect pests of wheat (Triticum sativum L) and barley (Hordeum vulgare L.). Cultural practices can prevent or minimize common sunn pest (Eurygaster integriceps Puton) population densities and crop damage. A three-year field experiment (Jun 05 to Aug 07) was conducted in Diyarbakir in the southeast Antolia region of Turkey, to evaluate the effects of planting method (no-till ridge planting and conventional planting) and earliness of durum wheat (Triticum durum L) varieties (early, mid-season and late varieties) on E. integriceps density, grain damage and overall grain yield. The effect of the planting method on the sunn pest density and percent of grains damaged by sunn pest was not significant; however, there was a significant difference among the different varieties used in this study. While Cesit-1252 (late wheat variety) had the highest nymph density (11.2 nymphs m(-2)) and percent of sunn pest damaged grains (2.8%), Sancanak-98 (early wheat variety) had the lowest nymph density (4.3 nymphs m(-2)) and percent of sunn pest damaged grains (0.8%). Grain yield was the highest (5.99 t ha(-1)) for Sancanak-98 while there was no significant difference between Aydin-93 (5.06 t ha(-1)) and Cesit-1252 (4.99 t ha(-1)). In conclusion, this study suggests that planting methods may not have a significant effect on sunn pest density, percent of sunn pest damaged grains or grain yield; however, the use of early durum wheat varieties, such asSaricanak-98, may reduce sunn pest population densities, percent of damaged grains, allowing increases in grain yield in southeast Anatolia region, Turkey. (C) 2012 Elsevier Ltd. All rights reserved.
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    EFFICIENCY OF PHEROMONE WATER TRAPS AND LIFE CYCLE OF TUTA ABSOLUTA (LEPIDOPTERA: GELECHIIDAE) IN DIYARBAKIR PROVINCE, TURKEY
    (Parlar Scientific Publications (P S P), 2017) Bayram, Yunus; Duman, Mehmet; Buyuk, Musa; Mutlu, Cetin
    The first detection of Tomato leaf miner, [(Tuta absoluta) (Meyrick, 1917) (Lepidoptera: Gelechiidae)] in Turkey was in 2009 and it rapidly spread and became the major pest in the areas where tomato is cultivated, including Southeastern Anatolia Region of Turkey. The aim of this study was to investigate the infestation status, life cycle and efficiency of pheromone water traps of Tomato leaf miner in Diyarbakir province, Turkey. The studies were conducted in farmers' fields and Diyarbakir Plant Protection Research Institute trial field between 2011-2013 years. Tomato leaf miners were subjected to trials in cages and the pheromone water traps were used for biotechnical control at open tomato fields. The infestation rate of T. absoluta was low in seedling stage and during ripening period of fruit and the infestation rate reached up to 100% and continued until the harvest in both years in the Central and Bismil districts of Diyarbakir. The pheromone water traps were not sufficient to control T. absoluta in spite of a large number of males caught. Adults of T. absoluta flying were recorded during at the end of March (8-12 degrees C and 62-75% relative humidity). Five generations were determined for T. absoluta with an average of 40 days for each generation and it was affected by extremely high temperatures and low humidity conditions.
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    Management of the Stink Bugs Dolycoris baccarum (L.) and Piezodorus lituratus (F.) (Hemiptera: Pentatomidae), and Chalky Spot Damage on Red Lentil in Southeast Anatolia Region, Turkey
    (Kansas Entomological Soc, 2018) Mutlu, Cetin; Buyuk, Musa; Eren, Sedat; Karaca, Vedat; Duman, Mehmet; Bayram, Yunus
    Chalky spot damage caused by the stink bugs Dolycoris baccarum (L.) and Piezodorus lituratus (F.) (Hemiptera: Pentatomidae) is a serious problem for red lentil production in Southeast Anatolia, Turkey. This study aimed to determine spraying time against stink bugs, based on lentil developmental stages and evaluate potential agronomic methods (early vs. timely harvest and traditional harvest with sickle bar mower vs. combine harvester) to reduce chalky spot. Field trials were carried out during 2011-2012 in three provinces of Southeast Anatolia (Diyarbakir, Mardin and Sanliurfa). Chalky spot damage was initiated at the R6 stage (full seed, seed on nodes 10-13 fill the pod cavities) when the stink bug nymphs started to be observed and the plant had soft immature seeds that were more susceptible to feeding by stink bugs. In early harvested lentil fields, the percentage of chalky spot damage was 0.60 and 0.20 in Diyarbakir and Sanliurfa provinces, respectively. It was lower than that of timely harvest. On the other hand, damaged seed percentage significantly reduced by changing the harvesting from traditional to combine harvesting and damage ratio was 0.90 and 0.00 in Diyarbakir and Mardin provinces, respectively. We conclude that the management to protect lentil crops from stink bug infestations should be initiated at the R6 growth stage, and that crops should be harvested a week earlier using combine harvester to reduce stink bug density and chalky spot damage.