Effect of variable rate application of fertilizers on the nitrogen use efficiency

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F23%3A43924458" target="_blank" >RIV/62156489:43210/23:43924458 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.5593/sgem2023/3.1/s13.26" target="_blank" >https://doi.org/10.5593/sgem2023/3.1/s13.26</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2023/3.1/s13.26" target="_blank" >10.5593/sgem2023/3.1/s13.26</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of variable rate application of fertilizers on the nitrogen use efficiency

Popis výsledku v původním jazyce

The aim of the study was to compare variable rate (VRA) and uniform (UNI) application of mineral nitrogen fertilizers in winter wheat and to evaluate the effect on the achieved yields, nitrogen balance and nitrogen use efficiency (NUE). For these purposes, a field experiment with an area of 16.98 ha of winter wheat was established in 2022 at farm Agra Risuty s.r.o. (Czech Republic, EU). Variable nitrogen topdressing was realized twice during the vegetation period based on yield potential (YP) maps. The evaluation of crop yield maps showed high spatial variability of achieved yield levels within the observed field and their coincidence with the zones of YP. In the case of the UNI variant, the same N rate over all zones led to significant over-fertilization in lessproductive zones in the range of 50 - 70 kg N per ha. This was also reflected by the lower value of NUE for zones with a lower value of YP. The results of the experiment thus point to the importance of the identification of YP zones and the reduction of nitrogen doses in the areas with lower yield productivity to ensure equal nitrogen balance and high NUE.

Název v anglickém jazyce

Effect of variable rate application of fertilizers on the nitrogen use efficiency

Popis výsledku anglicky

The aim of the study was to compare variable rate (VRA) and uniform (UNI) application of mineral nitrogen fertilizers in winter wheat and to evaluate the effect on the achieved yields, nitrogen balance and nitrogen use efficiency (NUE). For these purposes, a field experiment with an area of 16.98 ha of winter wheat was established in 2022 at farm Agra Risuty s.r.o. (Czech Republic, EU). Variable nitrogen topdressing was realized twice during the vegetation period based on yield potential (YP) maps. The evaluation of crop yield maps showed high spatial variability of achieved yield levels within the observed field and their coincidence with the zones of YP. In the case of the UNI variant, the same N rate over all zones led to significant over-fertilization in lessproductive zones in the range of 50 - 70 kg N per ha. This was also reflected by the lower value of NUE for zones with a lower value of YP. The results of the experiment thus point to the importance of the identification of YP zones and the reduction of nitrogen doses in the areas with lower yield productivity to ensure equal nitrogen balance and high NUE.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

40101 - Agriculture

Projekt

<a href="/cs/project/SS01020309" target="_blank" >SS01020309: Precizní zemědělství na pozemcích s regulovaným drenážním odtokem jako nástroj pro ochranu vod a zvýšení efektivity rostlinné výroby</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

SGEM2023. Water Resources. Forest, Marine and Ocean Ecosystems: Conference Proceedings

ISBN

978-619-7603-58-3

ISSN

1314-2704

e-ISSN

—

Počet stran výsledku

7

Strana od-do

217-223

Název nakladatele

STEF92 Technology Ltd.

Místo vydání

Sofie

Místo konání akce

Albena

Datum konání akce

3. 7. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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