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The article presents an analysis of the research results of the All-Russian Research Institute of Irrigated Agriculture, obtained in 2014 - 2016. in conditions of the southern slope of the Volga Upland, allowed to enrich the studied problem with new knowledge confirming the possibility of cultivating rice on innovative water-saving technology in general-purpose irrigation systems, including a different set of crops as precursors in field and other crop rotations. To assess the preference for the choice of rice precursors, we selected a legume soybean culture, a row crop potatoes and a narrow-crop culture rice.Studies have shown that, for all predecessors, rice crops with a small time difference have completed the vegetation period and formed a yield close to the planned without negative impact on soil, phytosanitary condition, growth and development of rice. All this makes it possible to recommend them for inclusion in rice crop rotations on general-purpose irrigation systems, to be used as rice precursors with periodic irrigation in the following ranking order: soybean ® potatoes ® rice.

Justification of the choice of predecessors of rice at drip irrigation on light- chestnut soils of the privolzhian extraction