Abstract
The research purpose was to study and recommend the most decorative types of shrubs with a number of drought resistance-related agronomic characters for introduction into gardening in Akmola region. The experiments were conducted under both open-field (nursery) and closed-field (greenhouse) conditions. We explored the application of drip irrigation, different propagation methods (field seeding or seedling planting), use of hydrogels and various fillers such as perlite, vermiculite, and gravel for soil structuring and moisture retention. The selection of the optimal approach was based on morphological indicators of seedlings, including height, annual growth rate, leaf flooding indicators, size, area measurements, and the timeframe for obtaining standard planting material. The leaf water retention capacity was assessed from May to September. We studied and compared the growth and development of selected shrub plants using conventional annual irrigation and horticultural fleece (agrotextile), as well as automated drip irrigation with the application of moisture-absorbing agents to the sowing and planting wells. To evaluate critical growth periods and irrigation needs, we analyzed leaf moisture and water retention capacity monthly under various watering conditions. High water retention capacity indicates the plants resistance to water deficiency, and the data studied varied in scores. The research identified critical irrigation periods in the arid conditions of the Akmola region. Morphological indicators of Tamarix ramosissima and Salix purpurea seedlings notably enhanced with drip irrigation and in nursery setting.
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