Observed and simulated depletion of mineral nitrogen by winter wheat from soil profile

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F11%3A00001839" target="_blank" >RIV/00027006:_____/11:00001839 - 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

Observed and simulated depletion of mineral nitrogen by winter wheat from soil profile

Popis výsledku v původním jazyce

Distribution of mineral N (Nmin = N-NO3- + N-NH4+) in a soil profile under winter wheat was simulated with model CERES-Wheat. The aim of the study was to compare observed and simulated Nmin distribution and apparent N depletion during wheat growth. The field experiment was performed in years 2008 and 2009, low (N1) and high N (N2) fertilization treatments were observed. Soil samples were taken in 20 cm increments from 10 cm down to 110 or 130 cm depth at early spring, at tillering, anthesis and after harvest. Wheat crop apparently depleted all physiologically available soil mineral N down to 90 cm depth under low N fertilization. The N in zones under 90 cm was not fully utilized. Under high N fertilization the supply of Nmin from top and subsoil layerswas not fully depleted that resulted in higher residual content after harvest than in N1 treatment. The model simulated fairly well the distribution of Nmin during wheat growth, the differences were mostly within range of Nmin variabilit

Název v anglickém jazyce

Observed and simulated depletion of mineral nitrogen by winter wheat from soil profile

Popis výsledku anglicky

Distribution of mineral N (Nmin = N-NO3- + N-NH4+) in a soil profile under winter wheat was simulated with model CERES-Wheat. The aim of the study was to compare observed and simulated Nmin distribution and apparent N depletion during wheat growth. The field experiment was performed in years 2008 and 2009, low (N1) and high N (N2) fertilization treatments were observed. Soil samples were taken in 20 cm increments from 10 cm down to 110 or 130 cm depth at early spring, at tillering, anthesis and after harvest. Wheat crop apparently depleted all physiologically available soil mineral N down to 90 cm depth under low N fertilization. The N in zones under 90 cm was not fully utilized. Under high N fertilization the supply of Nmin from top and subsoil layerswas not fully depleted that resulted in higher residual content after harvest than in N1 treatment. The model simulated fairly well the distribution of Nmin during wheat growth, the differences were mostly within range of Nmin variabilit

Druh

D - Stať ve sborníku

CEP obor

GD - Hnojení, závlahy, zpracování půdy

OECD FORD obor

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Projekt

<a href="/cs/project/QI111C080" target="_blank" >QI111C080: Zpřesnění dostupné zásoby vody v půdním profilu na základě modelu kořenového systému plodin pro efektivní hospodaření s vodou a dusíkem.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název statě ve sborníku

Soil, Plant and Food Interactions

ISBN

978-80-7375-534-8

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

131-135

Název nakladatele

Mendelova univerzita v Brně

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

1. 1. 2011

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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