Nematode Management in Cotton

摘要: The five most important cotton-producing countries are China, United States, India, Pakistan, and Brazil. There many other cotton producing regions in Asia, Australia, Africa the Americas. Cotton is grown entirely tropical, subtropical, warm-temperature climates, major nematodes of well adapted to warm environments. Globally, damaging Meloidogyne incognita races 3 4 Rotylenchulus reniformis. These concern Egypt Additional importance relatively restricted areas include Hoplolaimus columbus Belonolaimus longicaudatus southeastern States Pratylenchus brachyurus Brazil.Meloidogyne incognitafrequently involved a disease complex with Fusarium wilt that has far more impact on crop than nematode or fungus alone. Until very recently, primary strategies used for management have been application fumigants cholinesterase inhibitors, rotation Zea mays, Arachis hypogaea Glycine max incorporation soil amendments. over P. Brazil its potential damage Z. mays G. cotton. Promising seed treatments containing avermectin harpin proteins recently become available. Several cultivars resistant Melodogyne released. Currently there intense research toward introgression resistance R. reniformis into upland cotton, Gossypium hirsutum from species. During last two years DNA markers genes discovered offer great development suitable wide range growing conditions where produced.