The impacts of key adverse weather events on the field-grown vegetable yield variability in the Czech Republic from 1961 to 2014

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F17%3A00461691" target="_blank" >RIV/86652079:_____/17:00461691 - isvavai.cz</a>

Alternative codes found

RIV/60460709:41210/17:74337 RIV/00020699:_____/17:N0000052

Result on the web

<a href="http://dx.doi.org/10.1002/joc.4807" target="_blank" >http://dx.doi.org/10.1002/joc.4807</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/joc.4807" target="_blank" >10.1002/joc.4807</a>

Result language

angličtina

Original language name

The impacts of key adverse weather events on the field-grown vegetable yield variability in the Czech Republic from 1961 to 2014

Original language description

The response of field-grown vegetables to adverse weather conditions is strongly coupled to the timing of adverseevents,thesensitivityofthegrowthstageoftheimpactedcropandthemanagementactionsthataretaken.Toestimate the long-term yield response to changes in temperature and precipitation as well as the short-term response to key adverse weather events (e.g. heavy precipitation, drought and heat stress) on the yields of vegetable crops, we used several statistical approaches with six daily impact-indicators, the four monthly drought indices and the climate trends. Our study integrated a newly available historical yield dataset at the district level (the finest spatial resolution) for all highly marketable vegetables (celeriac, late carrots, root parsley, early kohlrabi, summer savoy cabbage, late cauliflower, late cabbage, onions, green peas, tomatoes,saladandpicklingcucumbers)andahigh-resolutionhistoricalclimatedataset(sevendailymeteorologicalvariables at a 10×10km resolution) over a 54-year period in the Czech Republic (CZ). Different indices were used to reflect different dimensions of water and heat stress, which have different impacts on vegetable growth and yield. We find positive long-term impacts of recent warming on fruiting vegetables (from 4.9 to 12.2%∘C−1) but decreases in the yield stability of traditionally grownrootvegetablesinthewarmestareasofthecountry.Short-termextremetemperaturevariabilities(dayswithheatstress) were found to be the dominant type of adverse event for tomato and cucumber production due to its effect on increased soil water demand, which increased transpiration rates, whereas changes in both the diurnal temperature ranges and minimum temperature (Tmin) were associated with minimal risk of frost damage. Brassicas vegetables are widely irrigated in the CZ, but irrigation does not fully mitigate drought effects, hence, short-term extreme precipitation variability largely controls crop production in the growing districts. The high frequencies of dry days and days with heavy precipitation within the critical growth stages of brassicas reflect a competition between more dry days and greater precipitation intensity on wet days. The yieldvariabilityofbulbsislargelyexplainedbybothshort-termextremeprecipitationandtemperaturevariability(drought-heat stress), which reflects the predominantly rain-fed system of onion cultivation. Both drought and heat stress and changes in Tmin were important in explaining yield losses of root vegetables. Legumes had the lowest risk of multiple stresses during their short growth cycle, but droughts remain the dominant type of adverse event. Years with yield gains were substantially more common than years with yield losses for brassicas, bulbs and legumes vegetables in all of the cultivated regions.n

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10509 - Meteorology and atmospheric sciences

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2017

Confidentiality

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

Name of the periodical

International Journal of Climatology

ISSN

0899-8418

e-ISSN

—

Volume of the periodical

37

Issue of the periodical within the volume

3

Country of publishing house

GB - UNITED KINGDOM

Number of pages

17

Pages from-to

1648-1664

UT code for WoS article

000395349500037

EID of the result in the Scopus database

2-s2.0-85014336244