The agrochemical state of sod-podzolic soils of Western Polissya in the conditions of anthropogenesis

Abstract

The agrochemical state of sod-podzolic soils of thе Western Polissya is analysed area of next agro-industrial groups: 27b-sod-podzolic gley-dried clay-sandy, 14b-sod-podzolic and podzolic-sod gley clay-sandy soils; 5b-sod-podzolic and non-glued and gleyy clay-sandy soils on sandy sediments. The content of humus, alkaline hydrolyzed nitrogen, mobile phosphorus and exchangeable potassium in sod-podzolic soils on arable land, under pasture and hayfields has been investigated. Determination of agrochemical indexes of soils, conducted in the laboratory of analytical support of agrochemical and agro-ecological research and quality of products Rivne branch of the state institution "Institute of Soil Protection of Ukraine". As a result, a low and medium degree of land provision was found for the studied parameters (with the exception of mobile forms of phosphorus in the agricultural group 14b under grass) irrespective of their agricultural use. In terms of humus content, agricultural production groups 14b and 5b under haymasters have an average degree of provision (2,1-2,2%), 27b for arable land and 5b for pasture-low; on the content of alkali hydrolyzed nitrogen-very low (< 101 mg/kg); on maintenance the movable forms of phosphorus themiddle is educed (51-100 mg/kg); with the content of mobile potassium, the agricultural production group 5b has a medium the degree of availability (84 mg/kg), other study groups-very low (< 41 mg/kg of soil). From depth, the content of all studied parameters decreases. Studying the dynamics of these indexes during 2011-2015 it is not set substantial differences in the process of the protracted cultivating, only on plough-land of the use of sederal cultures in 2014-2015 assisted the insignificant improvement of content of humus and other agrochemical indexes. Analysing agrochemical properties it is necessary to mark expediency of their improvement by application of the organo-mineral system of fertilizer in connected with the periodic liming, and also the use of the sederal sowing with the aim of passing to the conduct of organic agriculture.

Some Agrochemical Characteristics of the Soils of the Volyn’ Polissya Ecosystems

“…The greatest thickness of the humus layer is observed on the sod-podzolic soil of agroproduction group 14b under the hayloft and is 30 cm. The thickness of the humus layer is slightly lower for 5b under the pasture and hayloft -22 cm; the lowest thickness is for agricultural production group 27b under arable land -15 cm (Lyko et al, 2018;Krupko, 2020).…”

“…They contributed to the formation of a significant number of agricultural soil groups. Samples of various agricultural production groups were selected to determine the physical, physicochemical, agrochemical and ecological condition of sod-podzolic soils of the Volyn' Polissya zone (Lyko et al, 2018). These are samples: 5b of sodpodzolic and sod unglazed and silty clay-sandy soils on sandy deposits, used under hayfields and pastures in the Bereznе district (Yarynivka village) and Goshchan district (Zhalyanka village) districts; 27b of sod-podzolic gley drained clay-sand -under arable land in Dubrovytskyi district (Lyudin village); 14b of sod-podzolic and podzolic-sod clay loamysandy -under hayfields in the Rokytnivskyi (Rokytne village) district.…”

“…Agricultural production groups 27b and 14b belong to the V group with a high degree of security in terms of the content of mobile boron compounds (0.51-0.70 mg/kg), 5b belongs to the IV group with an increased boron content. According to this indicator, the studied lands are suitable for the creation of special raw material zones (0.70-0.33 mg/kg), with the exception of 5b under the pasture, this area is limitedly suitable (Lyko et al, 2018;Krupko, 2020;Lysytsya, 2023).…”

Поживний Режим Провапнованого Дерново-Підзолистого Ґрунту За Різних Доз Мінерального Удобрення Пшениці Озимої

“…Згідно з результатами досліджень, проведених Лико Д. В. [17] У середньому за роки досліджень найвищий вміст рухомих сполук фосфору у 0-20 см шарі дерново-підзолистого ґрунту встановлено у варіанті СаMg(СО 3 ) 2 (1,5 Нг) + N 120 Р 60 К 90 (реком.) + МД.…”