The use of saponite-containing materials as mineral fertilizers at the cultivation of potatoes in Arkhangelsk region

The research objective was studying the influence of saponite-containing by-products of the tails of enrich- ment received as a result of processing of kimberlite rocks on Diamond Deposit named after M.V. Lomo- nosov on the properties of soils and the crop of potatoes on alluvial soils in Arkhangelsk Region. The experiment on studying the influence of saponite as mineral fertilizer was made in 2017 together by PС"Severalmaz" and FSBI Station of agrochemical service "Arkhangelskaya" on the production site of SEC "Breeding Farm Holmogorsky" of Holmogorsky area, Arkhangelsk Re- gion. To lay out field experiment, the site with floodplain sod and gley soil, sandy loamy, formed on modern allu- vial sandy sediments, was chosen. It was established that when adding into the soil at cultivation of agricultur-al production saponite-containing materials had impact on the properties of soil and productivity of cultures. The nature of manifestation of their soil-improving properties was influenced by weather conditions, initial properties of the soil, the dose of introduction of clay materials...