Apricot flowering time prediction using growing degree hours

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25271121%3A_____%2F22%3AN0000069" target="_blank" >RIV/25271121:_____/22:N0000069 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.17660/ActaHortic.2022.1342.15" target="_blank" >http://dx.doi.org/10.17660/ActaHortic.2022.1342.15</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17660/ActaHortic.2022.1342.15" target="_blank" >10.17660/ActaHortic.2022.1342.15</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Apricot flowering time prediction using growing degree hours

Popis výsledku v původním jazyce

The increasing fluctuations in weather conditions in recent decades and the associated change in temperature conditions especially in spring and early spring leads to situations where significantly higher temperatures in January, February or March accelerate beginning of the fruit tree vegetation. In the case of spring frosts, even if they occur in the usual terms as in the past, flowers or already developed fruits will subsequently freeze causing crop damages. Fruit growers try to prevent these damages by various technical measures, but with regard to longer-term planning, they need to know at least approximately the flowering date in the given year. The method of flowering prediction of apricots (Prunus armeniaca L.) according to temperature models is elaborated in this work. Phenological phases of beginning of apricot flowering at locality of Velké Bílovice in South Moravia (Czech Republic) were recorded in years 1998–2018. Calculations of growing degree days (GDD) and growing degree hours (GDH) were performed. The variant of GDH with threshold value of +5 °C (SET+5) corresponded to flowering time as the most accurate. This threshold temperature can be used to predict the time of apricot flowering. Accumulated SET+5 from the beginning of the year to flowering has an average value of 2600 ° C.

Název v anglickém jazyce

Apricot flowering time prediction using growing degree hours

Popis výsledku anglicky

The increasing fluctuations in weather conditions in recent decades and the associated change in temperature conditions especially in spring and early spring leads to situations where significantly higher temperatures in January, February or March accelerate beginning of the fruit tree vegetation. In the case of spring frosts, even if they occur in the usual terms as in the past, flowers or already developed fruits will subsequently freeze causing crop damages. Fruit growers try to prevent these damages by various technical measures, but with regard to longer-term planning, they need to know at least approximately the flowering date in the given year. The method of flowering prediction of apricots (Prunus armeniaca L.) according to temperature models is elaborated in this work. Phenological phases of beginning of apricot flowering at locality of Velké Bílovice in South Moravia (Czech Republic) were recorded in years 1998–2018. Calculations of growing degree days (GDD) and growing degree hours (GDH) were performed. The variant of GDH with threshold value of +5 °C (SET+5) corresponded to flowering time as the most accurate. This threshold temperature can be used to predict the time of apricot flowering. Accumulated SET+5 from the beginning of the year to flowering has an average value of 2600 ° C.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

40105 - Horticulture, viticulture

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proc. I IS on Reproductive Biology of Fruit Tree Species

ISBN

—

ISSN

0567-7572

e-ISSN

—

Počet stran výsledku

4

Strana od-do

111-114

Název nakladatele

ISHS

Místo vydání

Leuven, Belgium

Místo konání akce

Montpellier, France

Datum konání akce

1. 1. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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