Ғылым жаршысы 2(93)2017 С.Сейфуллин
Аnnotation This paper reviews the distribution ofseveralspecies of invasive and quarantine weeds (Ambrosia artemisiifolia, Cuscuta sp., Acroptilon repens) on the territory of Karasay region, in Almaty. Weed is a plant that grows without human control; however effectively grow the in agricultural region while reducing crop yield and quality of plant. Invasive quarantine weeds in Kazakhstan are divided info five species according to their distribution in the certain area. As a result of quarantine monitoring analysis in Karasay region the agricultural crops are contaminated with three species of weeds and indicated a different dynamic distribution in the given area. Keywords: weeds, herbology, quarantine, perennial, Ambrosia artemisiifolia, Cuscuta sp., Acroptilon repens. Introduction A weed is a plant considered undesirable in a particular situation, "a plant in the wrong place". Examples commonly are plants unwanted in human-controlled settings, such as farm fields, gardens, lawns, and parks . Seed dispersal of weeds are also particularly important for weed population dynamics in agricultural environments because the frequent agronomic disturbance of the agroecosystem induces continuous recolonization of the ecological niche and also fulfills the ecological role of favoring the colonization of new areas . In recent years we often meet the terminology «quarantine» in agriculture. By this term «quarantine» means an infectious diseases and protection from harmful objectives and complex of methods in order to combat against the diseases and insects . Aftergainingourindependencysignificantly accelerated the spread of plant insects, diseases and weeds from abroad. And nowadays protection events of plants against harmful insects, diseases are very acute problem in our country. Imports of plants from overseas can increase the risk of introduction and distribution of quarantine weeds into Kazakhstan is enhancing and it leads a threat to food security and economy. In 2014 only in Almaty region was imported and transported from 67 foreign countries products that involved in quarantine 46 000 ton products, 5 000 ton technical products, 680 ton seed materials, 3740 000 seedlings, and 22.6 million pot plants. All of the materials are tested for presence of quarantine objects which may pretense a significant threat to the plant or vegetable product. As a result of investigation two parties of quarantine insects are observed. One of them is a 5421 flower from Netherland and second 880 flowers from Kenya. In addition were founded harmful insects that are not observed on the territory of Kazakhstan up to date and facilitated their spread by burning in muffle oven. Therefore all of these results indicate that investigating the varieties of the object of quarantine, weeds that are not present in the country’s territory, developing forecast of distribution in order to prevent their entry to Kazakhstan are very important. Introduction of quarantine objectives cause high risk for distribution of plant diseases and weeds .