Abstract
Abstract The main purpose of this study was to define the perspective of cultivating sunflower hybrids in the northeast of Kazakhstan. The trial included 10 hybrids that originated from the Institute of Field and Vegetable Crops, Novi Sad, Serbia (NS-sunflower hybrids). The study was conducted in the field and laboratory. Testing was carried out by PGTH technique (a preliminary testing of hybrids) ARRIOBC (All-Russian Research Institute of Oil-Bearing Crops) in quadruple frequency and as a production testing on big squares in single frequency. Phenological assessment, plant measurements, definition of oil content, 1000-seed weight and its nature were carried out by the standard methods. The experiments established the length of the vegetative period, growth indicators, yield, oil content and oil yield per hectare, 1000-seed weight and nature of the studied hybrids in three agro-climatic zones in the northeast of Kazakhstan. Two perspective locations for hybrid cultivation were allocated in Pavlodar and east Kazakhstan regions. Further research on developing seed farming technology of the perspective hybrids in Pavlodar region of Kazakhstanis planned.