Effect of fertilization on water use and yield of hops in mature hop plantation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F19%3A43915689" target="_blank" >RIV/62156489:43410/19:43915689 - isvavai.cz</a>
Alternative codes found
RIV/14864347:_____/19:N0000020
Result on the web
<a href="http://dx.doi.org/10.17660/ActaHortic.2019.1236.7" target="_blank" >http://dx.doi.org/10.17660/ActaHortic.2019.1236.7</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.17660/ActaHortic.2019.1236.7" target="_blank" >10.17660/ActaHortic.2019.1236.7</a>
Alternative languages
Result language
angličtina
Original language name
Effect of fertilization on water use and yield of hops in mature hop plantation
Original language description
The effect of decreasing nutrient availability on the ecophysiology and production of hop cones was studied in a plantation of cultivar 'Premiant', in Žatec hop growing region, Czech Republic. The plantation used to be fertilized by 60 t of manure ha -1 year -1 until November 2011 when it was discontinued as a part of the measures towards organic farming. Measurements of total evapotranspiration from the plantation using the Bowen ratio energy balance method, transpiration of hop bines by the means of sap flow, soil water and nutrient availability were conducted from 2011 to 2014. The yield of hop cones and the content of alpha acids were monitored in this period too. The concentration of total soil nitrogen (N) dropped from 19.4 mg kg -1 in March 2012 to 8.2 mg kg -1 in November 2014. Similarly, the content of N in leaves declined from 4.1% of dry mass in 2012 to 2.5% in 2014. The ratio between total evapotranspiration from the plantation to the potential evapotranspiration (PET) was not affected by the soil nutrient availability and did not vary among the years of study, ranging between average to 91 and 96% of PET. In the contrast to total evapotranspiration and PET, the proportion of hop transpiration on the total evapotranspiration steadily declined from 74 to 46% in 2011 and 2014, respectively. Plant regulation of stomatal conductance changed, bringing along lower stomatal aperture, especially upon the conditions of low vapor pressure deficit. In line with decline in transpiration and stomatal conductance, yield of alpha-acids declined from 204 kg ha-1 in 2011 to 97 kg ha-1 in 2014. To sum up, after the stop in fertilizing, total water use of the plantation remained similar as before, but the transpiration and production of alpha acids ha -1 significantly decreased.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
40101 - Agriculture
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Acta Horticulturae 1236
ISBN
978-94-6261-234-1
ISSN
0567-7572
e-ISSN
2406-6168
Number of pages
8
Pages from-to
45-52
Publisher name
International Society for Horticultural Science
Place of publication
Leuven
Event location
Yakima
Event date
Aug 4, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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