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Type of publication: conference paper
Type of publication (PDB): Tezės kituose recenzuojamuose leidiniuose / Theses in other peer-reviewed publications (T1e)
Field of Science: Ekologija ir aplinkotyra / Ecology and environmental sciences (N012)
Author(s): Pekarskas, Juozas;Gavenauskas, Algirdas;Jančius, Rūtenis
Title: Influence of organic and mineral fertilizers on the agrochemical properties of soil in organic vegetable farms
Is part of: Agrosym 2019 [elektroninis išteklius] : X international scientific agriculture symposium, Jahorina, October 03-06, Bosnia and Herzegovina: book of abstracts / editor in chief D. Kovacevic ; University of East Sarajevo [et al.]. East Sarajevo : Faculty of Agriculture, 2019
Extent: p. 514-514
Date: 2019
Keywords: Organic gardening;Carrots;Fertilizers;Soil agrochemical properties
ISBN: 9789997678713
Abstract: The inversigations were carried out in Lithuania, at Vytautas Magnus University's Agricultural Academy Test Station in loam Calc (ar) i-Epihypogleyic Luvisol - LVg-p-w-cc neutral, average humus, phosphorus and potassium soil. The investigation has been carried out with organically grown carrots and naturally occurring mineral phosphorus and potassium fertilizers, certified in organic farming system, such as: phosphorite powder, Patenkali, and organic fertilizers (cattle manure compost and vermicompost). The aim of the study was to investigate the influence of natural mineral and organic fertilizers on the agrochemical properties of the soil in the system of organic gardening. The amount of organic carbon and humus, mobile potassium, phosphorus and total nitrogen decreased in unfertilized soil. The soil natural fertility decreased, it was degraded. The use of phosphorus fertilizers increased the amount of mobile phosphorus in the soil, while fertilizing with potassium, the amount of mobile potassium increased the amount of mobile potassium, mobile phosphorus and organic carbon and humus decreased accordingly. The natural mixture of phosphorus and potassium fertilizers solved the problem of the decrease of mobile phosphorus and potassium in the soil, but the tendency of the decrease of humus in the soil remained. Organic fertilizers increased organic carbon and humus in the soil. The content of phosphorus and potassium in organic fertilizers was insufficient to ensure the accumulation of phosphorus and potassium in the soil. Fertilization by cattle manure vermicompost and compost had the greatest impact on the accumulation of organic carbon and humus in the soil. Vermicompost was more effective than compost
Affiliation(s): Miškų ir ekologijos fakultetas
Vytauto Didžiojo universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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