Potassium regime of irrigated chernozems in various agrotechnical backgrounds

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dc.contributor.authorTsurkan, Oksana I.en
dc.contributor.authorBurykina, Svetlana
dc.contributor.authorSuhorukova, Galyna S.
dc.contributor.authorBilanchyn, Yaroslav M.
dc.contributor.authorPiatkova, Alla V.en
dc.contributor.authorLeah, Tamara
dc.contributor.authorЦуркан, Оксана Іванівнаuk
dc.contributor.authorБіланчин, Ярослав Михайлович
dc.contributor.authorП’яткова, Алла Вікторівнаuk
dc.date.accessioned2019-08-21T06:04:44Z
dc.date.available2019-08-21T06:04:44Z
dc.date.issued2018
dc.description.abstractThe study analyses the changes of the fractional composition of potassium of the main soils of southern Ukraine – ordinary chernozem and southern chernozem under influence of irrigation and fertilization systems. The research was conducted in two stationary experiments, laid on chernozem ordinary (11-year of crop rotation) and on chernozem south (3-year multifactorial experiment). It is established that under the influence of irrigation in ordinary chernozem the sum of groups of potentially available potassium in a layer of 0-30 cm increases by 40.3 and 57.5% in comparison with rainfed conditions. The content of exchangeable potassium in chernozem usually varies considerably depending on the soil moisture (r = - 0.80). The norm of fertilizers – manure 200 t/ha + N200P200K60, introduced under the basic cultivation of the first crop rotation, in the aftermath after 11th year provides a positive balance of exchangeable potassium in ordinary chernozem even with a decrease in the initial content in 2.1 times. In the southern chernozem, the total amount of potentially available potassium is much lower than in chernozem ordinary: 19.0% in the layer 0-30 cm and from 45.5 to 52.6% with a depth of 120 cm. The distribution of the depth and direction of irrigation and fertilizer systems are similar to those of ordinary chernozem.uk_UA
dc.identifier.citationScientific Papers Series Management, Economic Engineering in Agriculture and Rural Developmentuk_UA
dc.identifier.urihttps://dspace.onu.edu.ua/handle/123456789/25032
dc.language.isoenuk_UA
dc.relation.ispartofseries;Vol. 18, issue 4.
dc.subjectordinary chernozemuk_UA
dc.subjectsouthern chernozemuk_UA
dc.subjectirrigation, fertilizersuk_UA
dc.subjectpotassium regimeuk_UA
dc.titlePotassium regime of irrigated chernozems in various agrotechnical backgroundsuk_UA
dc.typeArticleuk_UA
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