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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Effect of variable rate application of fertilizers on the nitrogen use efficiency
Original language description
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.
Czech name
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Czech description
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Project
<a href="/en/project/SS01020309" target="_blank" >SS01020309: Precision farming on agricultural land with conrolled drainage runoff as a tool to protect water and increase crop production efficiency</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
SGEM2023. Water Resources. Forest, Marine and Ocean Ecosystems: Conference Proceedings
ISBN
978-619-7603-58-3
ISSN
1314-2704
e-ISSN
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Number of pages
7
Pages from-to
217-223
Publisher name
STEF92 Technology Ltd.
Place of publication
Sofie
Event location
Albena
Event date
Jul 3, 2023
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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