Abstract
Abstract. The purpose of research is to study the adaptability and stability of new varieties and species of perennial grasses under different modes of use of grass (hay, pasture), aimed at reducing the dependence of their productivity on fluctuations in agrometeorological conditions in the arid zone. The research is based on the methods of designing grasslands adapted to extreme conditions of the arid zone and capable of withstanding temperature, water, and coenotic stresses due to morphophysiological reactions of plants. Results and practical significance. The most productive eco-plastic grass mixtures of new varieties of perennial legumes and grasses that are necessary for creating agrophytocenoses for target use have been identified. Correlative relationships of the productivity level of the species and variety with the physiological parameters of plants were established. The role of the phytocenotic factor that characterizes the relationship of plants in different modes of use of grass (haymaking, pasture) is determined and patterns in the dynamics of accumulation of crop biomass by grass mixtures of different botanical composition are established. The highest biomass on average for 4 years was formed by crops in the mode of haymaking use of grass (alfalfa + wheat grass + brome + sainfoin + melilot – 3.07 t/ha of dry matter). For pasture use, on average, over 4 years, the highest productivity was provided by a grass mixture – alfalfa + fairway + brome + wheatgrass + festulolium + sainfoin + melilot with a collection of 1.5 t/ha of dry matter and 9.6 GJ/ha of exchange energy for a net energy income of 8.7 GJ/ha. Scientific novelty. For the first time for the conditions of the dry-steppe zone, an adaptive approach to the creation of productive stands of perennial grass mixtures with the participation of new varieties and species of legumes and grasses, revealing the mechanism of plant interaction based on the developed optical structure of phytocenosis in different modes of forage use (haymaking, pasture), is proposed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.