This work reports on the use of cultural practices that influence grasshoppers’ nymphal emergence. Grasshopper eggs were buried at depths of 2, 14, 18, 22, and 26 cm in laboratory arenas. Nymph eclosion ranged from 77.5 to 87.8%. However, nymph emergence, measured as the number of nymphs that reached the soil surface, was estimated at 70.9% when eggs were buried at 2cm, but was reduced to 2.5 %...

A series of experiments was set up to examine the effects of nitrogen on rice (Oryza sativa L.) resistance against Nilaparvata lugens (Stål) and Sogatella furcifera (Horváth). Egg laying by N. lugens was reduced on the indica variety IR60. Nymph biomass (N. lugens and S. furcifera) was also lower on IR60: this was associated with low honeydew production and a high proportion of xylem-derived ho...

Population fluctuation monitoring of wheat thrips Haplothrips tritici (Kurdjumov, 1912) (Thysanoptera: Phlaeothripidae) was evaluated on the Tosunbey (wheat) and Tarım92 (barley) cultivars by weekly samplings from plant emergence to harvest season in 2016 2017 Isparta (Center). Adult nymphal stages individuals were collected using direct sampling shake-out methods. In method, cut above-ground p...

Abstract The scale mealybug, Diaspis echinocacti (Bouché, 1833) (Hemiptera: Diaspididae), is one of the main pests cactus pear in Brazil. objective was to study biological aspects D. at constant temperatures 25, 28, 30, 33 and 35 °C with relative humidity 60 ± 10% photoperiod 12 hours laboratory on cultivar, “Orelha de Elefante Mexicana”, Opuntia stricta [Haw.] Haw. development period (22 days)...

Based on re-examination of material belonging to the Museum of Zoology, Hamburg University, Germany, especially Georg Ulmer's collection, as well as newly collected specimens from the Sunda Islands, the genuine concept of Compsoneuria Eaton, 1881 is revised. The genus has had as junior synonyms Compsoneuriella Ulmer, 1939 (Oriental) and Notonurus Crass, 1947 (Afrotropical). A recent molecular s...

The effects of application of an artificial honeydew mixture of glucose, fructose and trehalose (GFT), honey and Bemisia tabaci nymph-extract as kairomonal sources in enhancing the foraging efficiency and performance of Eretmocerus sp. near furuhashii on cucumber plants were studied. Experiments were conducted in small greenhouses (4×3×3 m) using life table methods. Life table data indicated th...

The recent spread of the African citrus psyllid, Trioza erytreae, one vectors devastating disease, Huanglongbing (HLB), to parts mainland Europe has created considerable concern. In this study, we show efficacy several insecticides with varying modes action on different developmental stages T. erytreae. laboratory trials, spinetoram caused highest mortality in erytreae eggs (between 80 and 90%)...