Long-term effect of low potassium fertilization on its soil fractions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F14%3A00003045" target="_blank" >RIV/00027006:_____/14:00003045 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Long-term effect of low potassium fertilization on its soil fractions

Popis výsledku v původním jazyce

In the Czech Republic, negative potassium (K) budget in agricultural soils is caused by non-fertilization by K and by a decline of manure application. We investigated soil available, fixed (acid-extractable, Kfix) and structural K pools in the field trial with graduated K application rate, established in 1972 at 8 sites of different climate and soils. The content of K-bearing minerals was evaluated on semi-quantitative scale by XRD diffraction. K-feldspars were a dominant source of structural K. Total soil K consisted of 1.7?7.1% of fixed K, which was in a positive relation to mixed-layer phyllosilicates. Differences in available K in treatments with K budget lower than ?30 kg K/ha/year were small compared to those of fixed K. In control treatments, calculated average depletion of available K was ?18 kg K/ha/year and the average depletion of fixed K was ?12 kg K/ha/year; however at sites of higher altitude fixed K depletion prevailed. Fixed K accounted for 6?31% of the K budget. In neg

Název v anglickém jazyce

Long-term effect of low potassium fertilization on its soil fractions

Popis výsledku anglicky

In the Czech Republic, negative potassium (K) budget in agricultural soils is caused by non-fertilization by K and by a decline of manure application. We investigated soil available, fixed (acid-extractable, Kfix) and structural K pools in the field trial with graduated K application rate, established in 1972 at 8 sites of different climate and soils. The content of K-bearing minerals was evaluated on semi-quantitative scale by XRD diffraction. K-feldspars were a dominant source of structural K. Total soil K consisted of 1.7?7.1% of fixed K, which was in a positive relation to mixed-layer phyllosilicates. Differences in available K in treatments with K budget lower than ?30 kg K/ha/year were small compared to those of fixed K. In control treatments, calculated average depletion of available K was ?18 kg K/ha/year and the average depletion of fixed K was ?12 kg K/ha/year; however at sites of higher altitude fixed K depletion prevailed. Fixed K accounted for 6?31% of the K budget. In neg

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

GD - Hnojení, závlahy, zpracování půdy

OECD FORD obor

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Projekt

<a href="/cs/project/QI91C118" target="_blank" >QI91C118: Rezervy půdního draslíku v podmínkách trvalé negativní živinové bilance v obilnářských systémech.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Plant, Soil and Environment

ISSN

1214-1178

e-ISSN

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Svazek periodika

60

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

6

Strana od-do

358-363

Kód UT WoS článku

000341120700004

EID výsledku v databázi Scopus

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