The effect of urea and urea with urease inhibitors on tuber yields and starch content in potatoes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F16%3A43910074" target="_blank" >RIV/62156489:43210/16:43910074 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.17660/ActaHortic.2016.1142.6" target="_blank" >https://doi.org/10.17660/ActaHortic.2016.1142.6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17660/ActaHortic.2016.1142.6" target="_blank" >10.17660/ActaHortic.2016.1142.6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The effect of urea and urea with urease inhibitors on tuber yields and starch content in potatoes

Popis výsledku v původním jazyce

Volatile losses of NH3 originating from urea may be reduced by the application of urease inhibitors. The objective of the work was to compare the effect of three rates of nitrogen applied in two different fertilisers - urea and urea with urease inhibitor (NBPT). The effect of the fertiliser on tuber yields and starch content in potatoes was monitored. Two-year small-plot field experiments were established with the early cultivar 'Red Anna'. The experiment involved seven treatments (with 4 replications), including a control unfertilised treatment. The N rates were as follows: 54, 72 and 90 kg N ha-1. The yields differed statistically significantly in the respective years, i.e., 29.3-40.5 t ha-1 in 2010 and 17.3-23.7 t ha-1 in 2011. The effect of both fertilisers and/or nitrogen rates on tuber yields was irregular. Higher yields were achieved in treatments where higher rates of urea were applied as compared to the same rates of urea with the inhibitor only in 2011. On the other hand treatment with the lowest rate of urea with urease inhibitor showed yields comparable to or higher than all the other treatments in both years. The year-on-year fluctuation in the starch content of the tubers was minimal, i.e., 12.48-15.00% (2010) and 11.79-13.60% (2011). The lowest starch content in tubers was achieved with the lowest rate of N in urea. No differences in the starch content were observed in terms of the N rates applied in urea with the urease inhibitor in the two years. The results showed that the effectiveness of both fertilisers was affected primarily by the year.

Název v anglickém jazyce

The effect of urea and urea with urease inhibitors on tuber yields and starch content in potatoes

Popis výsledku anglicky

Volatile losses of NH3 originating from urea may be reduced by the application of urease inhibitors. The objective of the work was to compare the effect of three rates of nitrogen applied in two different fertilisers - urea and urea with urease inhibitor (NBPT). The effect of the fertiliser on tuber yields and starch content in potatoes was monitored. Two-year small-plot field experiments were established with the early cultivar 'Red Anna'. The experiment involved seven treatments (with 4 replications), including a control unfertilised treatment. The N rates were as follows: 54, 72 and 90 kg N ha-1. The yields differed statistically significantly in the respective years, i.e., 29.3-40.5 t ha-1 in 2010 and 17.3-23.7 t ha-1 in 2011. The effect of both fertilisers and/or nitrogen rates on tuber yields was irregular. Higher yields were achieved in treatments where higher rates of urea were applied as compared to the same rates of urea with the inhibitor only in 2011. On the other hand treatment with the lowest rate of urea with urease inhibitor showed yields comparable to or higher than all the other treatments in both years. The year-on-year fluctuation in the starch content of the tubers was minimal, i.e., 12.48-15.00% (2010) and 11.79-13.60% (2011). The lowest starch content in tubers was achieved with the lowest rate of N in urea. No differences in the starch content were observed in terms of the N rates applied in urea with the urease inhibitor in the two years. The results showed that the effectiveness of both fertilisers was affected primarily by the year.

Druh

D - Stať ve sborníku

CEP obor

GC - Pěstování rostlin, osevní postupy

OECD FORD obor

—

Projekt

<a href="/cs/project/QI101A184" target="_blank" >QI101A184: Technologie pěstování brambor - nové postupy šetrné k životnímu prostředí</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

Acta Horticulturae 1142

ISBN

978-94-6261-130-6

ISSN

0567-7572

e-ISSN

—

Počet stran výsledku

4

Strana od-do

37-40

Název nakladatele

International Society for Horticultural Science

Místo vydání

Leuven

Místo konání akce

Zagreb

Datum konání akce

29. 9. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000392627800006