Effect of Ameliorant and Fertilizers on Soil Filtration Properties, Plant Water Regime, and Fertility Under Natural Conditions

Abstract

The effect of the PMM polymer-mineral additive on enhancing the filtration properties of the soil, increasing the drought resistance of plants, and increasing the yield of agricultural crops was investigated in post-forest brown, stony, calcareous, medium-thick soils of the foothill zone. The influence of the introduction of the "PMM" additive, both separately and together with fertilizers, on the dynamics of changes in moisture and dissolved nutrients in the soil layer, the amount of water evaporated from a unit of leaf area per unit of time was revealed. The experiments revealed that these agrotechnical practices help to create a favorable environment, rich in nutrients and moisture, in the upper horizon of arable land (0–15 cm), which is essential for increasing crop yields.

Restoration Peculiarities of Ground Water Basins in the Mountainous Relief Regions

“…Formula ( 7) does not take into account the influence of the thickness of the aquifer h, because h depends on the water flow rate (Q) in a straight-line law, in formula (7) it is proposed to introduce a dimensionless correction factor α in the form of formula (10).…”

“…As a result, due to the reduced water requirements of plants during the winter season and the scarcity of water in rivers due to light summer rainfall, utilizing these water resources for agricultural crop irrigation becomes challenging. It is worth nothing that approximately 70% of the required total amount of water is not stored in reservoirs and is used inefficiently [10]. In recent years, various ameliorants, as well as, new innovative technologies, have been widely used to improve the efficiency of water use in agriculture [11].…”

Experimental research on the filtration properties of an untamped mixture with "PMM" polymer mineral material

“…For instance, the usable storage of the Aparan reservoir is 90 mln/m 3 from which 36 mln/m 3 is lost to filtration (Tokmajyan et al, 2020, Yeroyan, 2007. Being unique, highly effective, ecologically clean and having no comparable substitute, "Natlen" (Galstyan et al, 2020) and "PMM" (Galstyan et al, 2020;Tokmajyan et al, 2021), which is used for waterproofing important facilities and structures (subway tunnels, storage dams, dams, canals, reservoirs, treatment facilities, etc. ), has the ability to increase ten times in size when released into an aquatic environment (Galstyan et al, 2020;Tokmajyan et al, 2020).…”

“…Being unique, highly effective, ecologically clean and having no comparable substitute, "Natlen" (Galstyan et al, 2020) and "PMM" (Galstyan et al, 2020;Tokmajyan et al, 2021), which is used for waterproofing important facilities and structures (subway tunnels, storage dams, dams, canals, reservoirs, treatment facilities, etc. ), has the ability to increase ten times in size when released into an aquatic environment (Galstyan et al, 2020;Tokmajyan et al, 2020). It is advisable to build a new channel from the PMM substrate-soil in a proportion of 30-40 g/kg with a trapezoidal cross-sectional shape, and an angle of inclination of the side walls to the base of the channel of no more than 30 degrees (Tokmajyan et al, 2020).…”