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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.

SummaryThis study was a survey undertaken with 233 cotton producers locating in Diyarbakır (Central, Bismil and Çınar), Mardin (Central, Nusaybin and Kızıltepe) and Şanlıurfa (Siverek, Harran and Viranşehir) with between 2011 and 2012. According to the results, 52% and %35 of the growers receive the suggestions and advices regarding to plant protection practices from pesticide dealers and technical experts, respectively. Also, 76% of the growers use pesticide according to the label instructions, 82% of them dispose pesticides wastes, and 76% of them obey the protective measures including wearing glove, mask, eyeglass etc. during the pesticide treatments.Keywords: Cotton, plant protection problems, poll survey ÖzetBu çalışma, 2011-2012 yılları arasında Diyarbakır (Merkez, Bismil, Çınar), Mardin (Merkez, Nusaybin ve Kızıltepe) ve Şanlıurfa (Siverek Harran, Viranşehir) illerindeki toplam 233 pamuk üreticileriyle yapılmış bir anket çalışmasıdır. Pamuk üreticileriyle birebir görüşülerek toplam 12 soru sorulmuş ve bu sorulara verilen cevaplar değerlendirilmiştir. Elde edilen sonuçlara göre üreticilerin %52'si bitki koruma konularındaki tavsiyeleri ilaç bayilerinden %35'i ilgili teknik elemanlardan aldıkları belirlenmiştir. Üreticilerden %76'sının etikette belirtilen dozda ilaç kullandıkları, %82'sinin boş ilaç atıklarını imha ettikleri ve %76'sının ilaç uygulamaları sırasında eldiven, maske, gözlük gibi materyallerle koruyucu önlem aldıkları saptanmıştır.

The species of Cicadellidae, Cixiidae and Delphacidae (Hemiptera) on Karacadag rice and the effects of weeds on their populations were investigated in Diyarbakir and Sanliurfa provinces between 2010-2012. For specimen collection, sweep net and D.vac were used, and randomized complete block desing were employed by hanging yellow sticky traps for monitoring the populations of fluctations and densities of Cicadellidae and Delphacidae family in weedy and unweeded plots. A total of 17 species including 10 species belonging to Cicadellidae family, 3 species Ciixiidae and 4 species from Delphacidae were determined. The most abundant and common species were recorded to be Agallia harrarensis Melichar, 1911 and Empoasca sp., from Cicadellidae, Tachycixius desertorum (Fieber, 1876) and Hyalesthes obsoletus Signoret 1865 from Cixiidae, Laodelphax striatellus (Fallen), Sogotella vibix from Delphacidae family. It was determined that the weeds in rice increased the population of cicadellid and while 71.4% of individuals was captured from weedy plots, 28.6% was obtained from unweeded plots. The population of Delphacidae and Cixiidae were recorded slightly higher in weedy plots The population densities of Cicadellidae and Delphacidae began to increase starting from vegetative stage and reached to pick level at generative-maturity stage. It is suggested that the control of weeds must be performed strictly and to be considered in rice cultivated areas.

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