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Effects of Different Biostimulants on Seed Germination of Sorghum Plants

100%

Kalymbetov G. Y. , Kedelbayev B. S. , Yelemanova Z. R. , Sapargaliyeva B.

Journal of Ecological Engineering

2023

tom Vol. 24, nr 3

134--142

By creating highly productive phytobiomes, selection of new types of biostimulants on the basis of organic substances and microorganism has a decisive role. It could be done by taking into account natural and climatic peculiarities of the region. The article described the importance of sugar sorghum and substantiates the introduction of an adaptive variety to increase the productivity of fodder sorghum and the best option of using growth biostimulants. The results of evaluating the effectiveness of growth biostimulants under laboratory conditions on the main nutritional valuable traits were presented. The treatment of optimal parameters of sugar sorghum seeds with biostimulants in the Research laboratory "Industrial biotechnology" of M. Auezov South Kazakhstan University was determined. It was shown that the "Azotofertil" biostimulator has a high efficiency in pre-sowing seed treatment. For comparative evaluation of potentialities of new biostimulant, MERS biostimulant adapted to climatic conditions was chosen. According to research results, both biostimulants showed high efficiency for seed pre-sowing treatment. The best concentration for treatment of planting material was established. Energy of germination, swelling and the number of germination of seeds of sugar sorghum variety Kazakhstan-16 were determined. In evaluating the activity of biostimulants for efficiency, the dynamics of their friendly germination was traced. At 4% concentration and temperature above 14 °C, the advantage of "Azotofertil" biostimulator based on Azotobacter chroococcum strain was proven. Seeds of sugar sorghum variety Kazakhstan-16 showed the best results with 96 ± 3% germination.

Biostimulator for Arid Pastures in the South of Kazakhstan

88%

Baymagambetova Z. , Kedelbayev B. , Seitkarimov A. , Kalymbetov G. , Sapargaliyeva B.

Journal of Ecological Engineering

2024

tom Vol. 25, nr 1

131--145

Long-term unsystematic use of near-settlement pastures in the desert zone of South Kazakhstan had a negative impact on the physic-chemical parameters of Calcisol. Excessive grazing leads to trampling of soil and reduction of soil fertility. The aim of the study was to develop a technology to improve the productivity of degraded near-settlement pastures. The tasks of the research were to determine the effect application of environmental safe biostimulator and biofertilizer on microbial communities, the content of carbon and phosphorus in the soil, the effectiveness of biostimulator application on degraded pastures in order to increase green mass. For this purpose, geobotanical, bacteriological and helminthological methods of analysis were used. The result of the used proposed technology is the activation of soil microorganisms, which leads to the prevention of degradation of arid pastures. The results of the conducted research contribute to the introduction of a better technology to increase the productivity of arid near-settlement pastures. Statistical analysis of the experiments showed that all manipulations on soil microorganisms increase the number and green mass of arid plants.

Microorganisms in the Soil of Arid Pastures–Indicators of Health and Assistants in the Evaluation of Biostimulants

88%

Baymagambetova Z. , Kalymbetov G. , Seitkarimov A. , Sapargaliyeva B. , Abai S.

Journal of Ecological Engineering

2024

tom Vol. 25, nr 8

179--189

Microorganisms living in the soil of arid rangelands play a key role in maintaining their health. These tiny creatures are agents of organic matter decomposition on which soil fertility depends. Species and quantitative composition of microorganisms is an indicator reflecting the direction of biological processes in the soil. In natural conditions, the ratio of different groups of microorganisms shows whether decomposition or synthesis of organic compounds, including humus, prevails. In agrocenoses where humans use organic and inorganic fertilizers, the study of microorganisms helps to assess the availability of nutrient elements to plants. Analysis of the soil microbial community also allows direct assessment of the effectiveness of biostimulant application, i.e. how well plants assimilate the applied macronutrients. The purpose of our study was to determine the health of the soil by the number and ratio of different groups of microorganisms, to identify whether the processes of decomposition (mineralization) or synthesis (immobilization) of nutrients prevail in the soil and to obtain reliable information on the availability of nutrients for plants. The study of microorganisms in the soil of arid pastures is a valuable tool for assessing their ecological state, as well as for developing more efficient and environmentally friendly farming methods.