Влияние способов уборки на урожайность семян масличного льна в условиях степной зоны Северного Казахстана.

Abstract

In the steppe zone of Northern Kazakhstan, selecting an optimal harvesting method is a key factor in obtaining consistently high yields of oil flax. This article presents the results of three years of field experiments aimed at evaluating the effectiveness of different harvesting methods: direct combining, two-phase harvesting (via windrowing), and harvesting after desiccation. The research was conducted under varying climatic conditions in terms of moisture availability, allowing for the assessment of the stability of agronomic practices across different weather scenarios. Despite similar field germination rates across all years, significant differences in yield were primarily attributed to the harvesting method. The highest yields were achieved through two-phase harvesting, especially in years with more favorable moisture conditions, whereas the use of desiccation led to a notable decrease in productivity. The results are statistically validated and demonstrate a clear advantage of windrow harvesting under dry climatic conditions. Therefore, two-phase harvesting can be recommended as the main method for improving the productivity of oil flax in the agrocenoses of the northern regions of Kazakhstan.