Uman NUH | today: 09/10/2019

Effect of liming on the content of mobile compounds of trace elements in chernozem podzolized

Author(s) Hospodarenko G.M., Doctor of Agricultural Sciences, Professor, Uman National University of Horticulture, Ukraine
Prokopchuk I.V., Candidate of Agricultural Sciences, Associate Professor of Soil Science and Agricultural Chemistry, Uman National University of Horticulture
Category The Agronomy
year 2018 issue Випуск №92. Частина 1
pages 36-46 index UDK 631.81.095.337
DOI
Abstract The results of the study of the effect of liming and mineral fertilizers on the content of mobile compounds of microelements in soil are presented. Studies have found that the joint application of mineral fertilizers and lime materials significantly reduces the acidity of the soil. The aftereffect of defecate in the variants of the experiment, where 1–1.5 doses were administered, was also manifested in the fourth year. Acidification of the soil has not yet reached the original level and, accordingly, the degree of acidity was very weakly acidic. Studies have found that the joint application of mineral fertilizers with different doses of defecate affects the change in the content of mobile forms of micronutrients in chernozem podzolized heavy loam. In variants of the experiment with the introduction of defecate, the content of the zinc was reduced and became 0.6-0.8 mg / kg. Calculations of the correlation coefficient between acidity and the content of mobile compounds of the zinc show an essential dependence (R2 = 0.62). The increased dose of defecation significantly reduced the content of mobile iron compounds - up to 46.3–51.1 mg/kg soil with the use of half the defecate dose, up to 43.7–45.6 mg / kg for variants with a single defecate dose and up to 42,1–45.8 mg/kg soil when applying a half dose of defecate against the background of mineral fertilizers. The multiple co-factor of the correlation regression indicates a strong relationship between these indicators (R2 = 0.76). The content of mobile copper compounds in the variants of the experiment without liming was 1.30–1.43 mg / kg soil and decreased with the introduction of defecate. The value of this indicator slightly depended on the acidity of the soil (R2 = 0.33). The joint application of mineral fertilizers and defecate accompanied the reduction in the content of mobile manganese compounds to 36.6–54.9 mg/kg soil, depending on the dosage of their application. Also, a strong dependence of the content of mobile manganese compounds on the acidity of the soil (R2 = 0.70) was established. The introduction of mineral fertilizers against the defecate reduced the content of boron to 0.7–1.0 mg/kg. In this case, the correlation coefficient between the acidity of the soil and the content of mobile boron compounds shows a strong dependence (R2 = 0.70).
Key words podzolized chernozem, acidity of soils, microelements, mineral fertilizers, defecate.
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