Influence of Some Weed Control Treatments on The Yield and Quality of Cotton (Gossypium barbadense L.)

Abstract

Cotton (Gossypium barbadense L.) is the most important cash crop in Egypt and the world but it is also a source of many elements of daily use. During 2018-2019 The cultivated area was 336 thousand acres of long-staple cotton greater than 220 thousand acres in 2017.While the average yield per acre of cotton Giza (94) Haya was 10.71 k / f. according to the Central Agency for Public Mobilization and Statistics issued the quarterly bulletin for cotton the fourth quarter (June / August) for the 2018/2019 agricultural season. Cotton is used in many industries and provides rawmaterial for fiber, clothing, vegetable oils, and animal feed. Moreover, the crop residue of cotton plants can be used as fertilizer; Cotton was grown in the Indus Valley in Pakistan for more than 3000 BC (Iqbal, Reddy, El-Zik, & Pepper, 2001). Cotton is a crop that is attacked by hundreds of pests such as viruses, pathogens, insect pests, and weeds which together can cause a yield loss of more than 80% in this crop (Oerke, 2006). Weeding can severely reduce cotton yield and can negatively affect staple quality. (Capinera, 2005) found that weeds are an important plant resource for insects, although feeding by insects on weeds can have both positive and negative effects on crop productivity. Weeds also indirectly affect crops via their influence on beneficial insects,