Eluvial losses of Ca from Umbric Albeluvisols Abruptic produced by different doses of lime: Column experiment

Abstract

Losses of soil calcium due to migration from Umbric Albeluvisols Abruptic soil meliorated by various doses of chalk were studied in column experiment with 16 washings. It has been established that the dynamic of calcium leaching from soil limed with optimal dose (1) and increased dose (2) is of a similar nature. In both treatments in the first 5 and 3 washes, respectively, there was a sharp decrease in the amount of calcium in the soil as described by exponential model. Starting from 6 and 4 washes, respectively, stabilization in Ca losses occurred. It was found that an increase in the chalk dose by 2.7 times increases the leaching of calcium by 4.8 times. It was concluded that an attempt to create in soil a certain reserve of available calcium for plants by increasing the dose of a finely ground ameliorant is ineffective because it increases unproductive losses of calcium. It has been suggested that in the soil there is a buffer system: exchangeable calcium ↔ calcium of soil solution, which even in the conditions of intensive wetting maintains the presence of a certain amount of water-soluble calcium.

Changes in <em>Eutric Cambisol</em> due to long-term mineral fertilisation: A case study in Serbia

“…Ghimire et al (2017) found that surface soil pH dropped from 5.70 in control conditions to 5.0 after 70 years of N-application . This study confirmed that the continuous addition of mineral N results in a constant gradual decrease in pH, accompanied by the loss of basic cations (Ca 2+ , K + , Mg 2+ ) due to leaching (Pavlova et al, 2019). This, in turn, leads to a decrease in base saturation and an increase in Al 3+ saturation, and thus the availability of nutrients is reduced (Goulding, 2016).…”

Effect of liming of sod-podzolic soils with by-products of steel production on soil acidity and composition of wash water (column experiments)

“…The Department of Soil Science and Agrochemistry of the St. Petersburg State Agrarian University (Russia), together with the Agrophysical Research Institute (St. Petersburg, Russia) has been dealing with the problem of using non-traditional chemical ameliorants (local lime materials and industrial waste) for liming acidic soils (Litvinovich et al, 2001(Litvinovich et al, , 2013(Litvinovich et al, , 2016(Litvinovich et al, , 2017(Litvinovich et al, , 2018(Litvinovich et al, , 2019a(Litvinovich et al, , 2019b(Litvinovich et al, , 2020Pavlova et al, 2019aPavlova et al, , 2019cPavlova et al, , 2020Lavrishchev et al, 2017). The widespread use of these materials is limited by the presence of harmful impurities in their composition that can have a negative effect on soils and plants.…”