University of Guilan Caspian Journal of Environmental Sciences 1735-3033 23 2 2025 04 01 Contamination of crops and productivity of rice in various ways of its aerobic cultivation and irrigation 397 407 8722 10.22124/cjes.2025.8722 EN Aizada Sembayeva Kazakh National Agrarian Research University, Almaty, Kazakhstan Zhumagali Ospanbayev Kazakh National Agrarian Research University, Almaty, Kazakhstan Ainur Doszhanova Kazakh National Agrarian Research University, Almaty, Kazakhstan Muhit Bekbauov Kazakh National Agrarian Research University, Almaty, Kazakhstan Alma Saikenova Kazakh Research Institute of Agriculture and Plant Growing, Almalybak, Kazakhstan Karima Myrzabek Kazakh National Agrarian Research University, Almaty, Kazakhstan Makpal Kanatkyzy Kazakh Research Institute of Agriculture and Plant Growing, Almalybak, Kazakhstan Dzhulduz Abildayeva Kazakh Research Institute of Agriculture and Plant Growing, Almalybak, Kazakhstan Journal Article 2025 05 06 The article presents the results of research conducted in the conditions of the foothill irrigation zone of the South-east Kazakhstan. The features of grain harvest formation and the degree of contamination of rice crops have been studied, depending on irrigation methods, timing and methods of sowing, and methods of weed control. The research results have shown that in conditions of irrigation in the South-east Kazakhstan, sufficiently high yields of rice can be obtained by aerobic cultivation using fine sprinkling or drip irrigation.  At the same time, effective ways of weed control have been identified, forming a favorable phytosanitary condition of rice crops without traditional irrigation with flooding. The results of studies on the contamination of rice crops with various methods of weed control, irrigation, timing and methods of sowing are presented. https://cjes.guilan.ac.ir/article_8722_6f163bac23ca9a4875351016168e34a5.pdf