الفهرس 
Effect of different pesticide on adult females of two spotted spider mite T.
Culture techniques:-Only 14 pages are availabe for public view
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Abstract
Cotton is one of Egypt’s most important cash crops, accounting for more than a quarter of the income of two million small-scale farmers. Cotton is attacked by a variety of insect species early in the season in the seedling stage, mid-season, and late in the season in the fruiting stage.)Salama et al., 2006(. Cotton, Gossypium hirsutum, is the country’s most important cash crop, providing first-rate contributions to agriculture, food, and textiles. All of the components of the cotton plant are quite valuable in everyday life. Cotton’s most important parts are seed and fibre (lint), according to (Sarwar et al., 2013). Cotton sucking pests include aphid, jassid, white fly, thrips, red cotton bug, mealy bug, and dusky cotton bug cause the most crop damage.Cottons in Egypt occupied an important place in Egyptian-national-economy, (Mesbah et. al., 2004). Also, two spotted spider-mite T. urticae, concealable an important agricultural-pest in world-wide because, almost resistant development insecticides.
Synthetic-pesticides caused major of problems, e.g. environmental pollutions and resistance, we must take many measures, like, more development of selective-pesticides, newly methods of work, no damage to natural-enemies and using of biological-control, (Steiner, et. al., 2011). In Egypt, many chemical pesticides and integrated protection programs it was used to control this pest and to decrease the widespread damagewhich it causes. (kumar, et al .,2019). Spider-mites mouth-parts are piercing-sucking and inserting their needle inside plant-tissues, they preferred feeds on surface of lower-leaf, (Attia et. al., 2012). Tetranychusurticae(two-spotted spider mite) and Bemisia tabaci (sweet potato whitefly), two of the most important agricultural pests worldwide, have developed resistance to almost all chemical classes of insecticides.Tetranychus urticae is highly polyphagous and has been recorded to feed on over 1100 plant species (Dermauw et al., 2013). Other South Carolina T. urticae populations were identified as bifenthrin and abamectin resistant (Schmidt et al, 2021). whitefly, Bemisia tabaci Genn.is the most detrimental sucking pest (Amin et al., 2008). It sucks the cell sape from the underside of leaves and deposits the droplets of honeydew on the leaves, that results in sooty mold development. Bemisia tabaci (Genn.) is a polyphagous and multivoltine insect pest responsible for high economic losses in many crops, due, in part, to the transmission of plant-pathogenic viruses. Twenty different whitefly (B. tabaci) biotypes have currently been reported worldwide, named according to their native occurrence (Lima et al., 2000) and (Debarro et al., 2016). Tetranychus urticae Koch is one of important specie belonging to Acari; Tetranychidae, associated with 900 plant-species, whichattacks many crops in fields and greenhouses around the world, (Jeppson et. al., 1975) and (Meyer, 1996