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Wyszukujesz frazę "deficit irrigation" wg kryterium: Temat


Wyświetlanie 1-7 z 7
Tytuł:
Regulated deficit irrigation of rhododendrons grown in containers
Autorzy:
Matysiak, B.
Koniarski, M.
Treder, W.
Powiązania:
https://bibliotekanauki.pl/articles/101612.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
evapotranspiration
irrigation
ornamental nursery
regulated deficit irrigation
RDI
rhododendron
Opis:
The effect of deficit irrigation imposed in July-August period on shoot growth and flower formation in container grown rhododendron in commercial nursery were assessed. Plants were exposed to three irrigation regimes based on potential evapotranspiration rates (100% ET0 - well-watered control plants, 75% ET0 - moderate drought and 50% ET0 - severe drought). The values of evapotranspiration were calculated using the Penman-Monteith model. The degree of drought had significant effect on the plant growth and water status of plants. Severe drought inhibited secondary shoot elongation compared to less stressful regime but did not affect flower formation. ‘Catawbiense Boursault’, ‘Nova Zembla’ and ‘Pearce’s American Beauty’ plants exposed to severe drought were shorter, respectively by 39, 45 and 86% than well-irrigated plants and two of the three cultivars ‘Catawbiense Boursault’ and ‘Pearce’s American Beauty’ produced fewer secondary branches (5.9 and 0.3) compared to control plants (9.2 and 1.7, respectively). Moderate drought did not affect plant growth but resulted in flower bud formation in ‘Nova Zembla’ and ‘Pearce’s American Beauty’s cultivars. Estimated water consumption by rhododendrons throughout the whole growing season was reduced by 15% for moderate and 25% for severe drought compared to control, well-watered plants. The results have significant implications for water conserving in commercial production of rhododendrons.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2017, II/1; 509-519
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Water Requirements of Grapevines (Vitis vinifera L.) Under Climatic Conditions of Central Poland
Autorzy:
Rolbiecki, Stanisław
Jagosz, Barbara
Stachowski, Piotr
Rolbiecki, Roman
Powiązania:
https://bibliotekanauki.pl/articles/2069915.pdf
Data publikacji:
2021
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
climate changes
evapotranspiration
irrigation
precipitation
rainfall deficit
Opis:
The purpose of this study was to estimate the water needs of grapevines in central Poland in 1981-2010. Water needs were calculated by the plant coefficients, which were assumed according to the Doorenbos and Pruitt method. Reference evapotranspiration was assessed by the Blaney-Criddle’s equation, modified for Polish conditions. Rainfall deficit with the occurrence probability of normal, medium dry and very dry years was determined by the Ostromęcki’s method. Water needs of grapevines during the growing season was 434 mm. Upward time trend in the water needs both in the periods May-October and June-August was estimated. Temporal variability in the water needs was significant for most of the provinces. The rainfall deficit was recorded with the occurrence probability of normal as well as medium or very dry years in the entire study area. Due to climate changes, vineyards will require irrigation in the near future. This research significantly broadens and refines the knowledge about the water needs of grapevines in central Poland, which will allow the design of resource-efficient irrigation programs for grapevines in the studied region of Poland.
Źródło:
Rocznik Ochrona Środowiska; 2021, 23; 731--743
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dendrometric evaluation of Helianthus annuus under water deficit conditions
Autorzy:
Obročník, Oliver
Bárek, Viliam
Powiązania:
https://bibliotekanauki.pl/articles/28411641.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
dendrometer
drought
Helianthus annuus
irrigation
water deficit
water stress
Opis:
Drought is characterised as a recurring climatic phenomenon with prolonged duration, affecting land through below-average rainfall and often accompanied by high temperatures. When the available water falls below the optimum level, water deficit or water stress arises, disrupting normal plant processes. This condition poses challenges for plant growth and development as it hampers the internal water transport, induces stomatal closure, and limits access to photosynthetic resources. The study employed the annual sunflower as the experimental plant. The plants were cultivated in a controlled environment with a temperature ranging from 20 to 25°C and a humidity level of 55 to 60%, supplemented by MARS HYDRO artificial LED lighting set to a 12-h photoperiod. Radial changes in the plant stems were monitored using a DD-S type dendrometric sensor to measure radial fluctuations. The collected data were recorded in a dendrometric data logger DL 18. Data collection occurred at hourly intervals from February 20 to March 9, 2023. The nine plants were divided into three groups, each comprising three plants. All plants from groups 1 and 2 received irrigation at one-day intervals (group 1 - 80 cm3 per plant, group 2 - 40 cm3 per plant) and group 3 was not irrigated. Based on these findings, visible water stress was evident in the plants under experimental conditions. Consequently, continuous monitoring throughout the growing season will be essential to adjust the irrigation rate to meet the requirements of the plants.
Źródło:
Journal of Water and Land Development; 2023, 59; 50--53
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Water Needs of Grapevines in the Different Regions of Poland
Autorzy:
Rolbiecki, Stanisław
Jagosz, Barbara
Rolbiecki, Roman
Ptach, Wiesław
Stachowski, Piotr
Kasperska-Wołowicz, Wiesława
Łangowski, Ariel
Sadan, Hicran A.
Klimek, Andrzej
Dobosz, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/123482.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
evapotranspiration
irrigation
rainfall deficit
Vitis vinifera L.
water requirements
Opis:
The aim of this study was to estimate the water needs of grapevines (Vitis vinifera L.) in the different regions of Poland. The requirements of grapevines water, considered as the crop evapotranspiration, were determined using the plant coefficient method. The grapevine plants crop evapotranspiration was measured using the reference evapotranspiration and plant coefficients. The plant coefficients were adapted to the reference evapotranspiration that was calculated using the Blaney‑Criddle’s formula, modified for Polish conditions by Żakowicz. The water needs of grapevines were determined for five agro‑climatic regions of Poland with the representative meteorological stations. The calculations of grapevines water requirements were carried out for the thirty‑year period determined from 1981 to 2010. The study was based on the six‑month growing season established from May 1 to October 31. Four months, including May, June, July and August, were considered as the irrigation period. The highest grapevines water requirements (440 mm) during the growing season, were observed in the north‑west and central‑east region of Poland. In turn, the lowest water requirements were revealed in the south‑east (414 mm) and north‑east (415 mm) region of the country. During the irrigation period, the highest grapevines water needs occurred in the central‑north‑west (355 mm) and central‑east (353 mm) region of Poland, while the lowest (329 mm) – in the south‑east region of the country. The upward time trend of the grapevines water requirements was observed both in the growing season and in the irrigation period. With the exception of the central‑north‑west region, this time trend was significant throughout Poland. The highest increase in the water needs of grapevines during the growing season (by 6.9 mm in each subsequent ten‑year period) occurred in the central‑east and south‑east region of Poland. In the irrigation period, the highest rise of grapevines water requirements was noted in the south‑west (7.4 mm decade ‑1) and south‑east (7.6 mm decade ‑1) region of the country. The highest rainfall deficit was observed in the central‑north‑west region of Poland; 125 mm during the growing season, and 117 mm in the irrigation period.
Źródło:
Journal of Ecological Engineering; 2019, 20, 7; 222-232
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena możliwości wykorzystania rezerw zasobów dyspozycyjnych wód podziemnych do łagodzenia skutków suszy w rolnictwie
Assessment of the possibility of using reserves of disposable groundwater resources to mitigate the effects of drought in agriculture
Autorzy:
Herbich, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2061553.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
susza
niedobory wodne upraw rolnych
pobór wód podziemnych
nawodnienia
drought
water deficit for agricultural crops
groundwater abstraction
irrigation
Opis:
Na podstawie danych z bazy GIS Mapy Hydrogeologicznej Polski w skali 1:50 000 ustalono optymalne warunki dla intensywnego poboru wody studniami wierconymi z poziomów wodonośnych podczas długotrwałej suszy hydrologicznej na obszarze pasa nizin środkowopolskich o najniższych w kraju opadach atmosferycznych i głębokich niedoborach wody na terenach upraw rolnych w okresie suszy. Zależnie od warunków hydrogeologicznych i rodzaju gleb, pobór z pojedynczej studni może w okresie głębokiej suszy hydrologicznej pokryć wysokie niedobory wody na terenach upraw rolnych na powierzchni najczęściej 15–50 ha, natomiast czas odbudowy retencji sczerpanych zasobów w ujętym poziomie wodonośnym wyniesie najczęściej 1–5 lat.
Based on the GIS database for the 1: 50,000 Hydrogeological Map of Poland, the optimum conditions have been established for intensive water abstraction by drilled wells from aquifers during a long-lasting hydrological drought in the central regions of the Polish Lowlands. It is the area of country’s lowest precipitation and high water deficits for agriculture during droughts. Depending on the hydrogeological conditions and the type of soils, water abstraction from a single well can cover high water deficit for agriculture during a period of deep hydrological drought in an area of most frequently 15–50 hectares. The time of retention recovery in the aquifer for depleted resources will usually be 1–5 years.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2019, Hydrogeologia z. 16; 51--57
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Growth and development of potted rhododendron cultivars "Catawbiense Boursault" and "Old Port" in response to regulated deficit irrigation
Autorzy:
Koniarski, M.
Matysiak, B.
Powiązania:
https://bibliotekanauki.pl/articles/1896.pdf
Data publikacji:
2013
Wydawca:
Instytut Ogrodnictwa
Tematy:
Rhododendron
ornamental plant
Catawbiense Boursault cultivar
Old Port cultivar
plant growth
flowering
plant development
water deficit
irrigation
evapotranspiration
greenhouse cultivation
quality index
Źródło:
Journal of Horticultural Research; 2013, 21, 1
2300-5009
Pojawia się w:
Journal of Horticultural Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of preharvest deficit irrigation treatments in combination with reduced nitrogen fertilization on orchard performance of nectarine with emphasis on postharvest diseases and pruning weights
Autorzy:
Atay, E.
Hucbourg, B.
Drevet, A.
Lauri, P.-É.
Powiązania:
https://bibliotekanauki.pl/articles/12615862.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
nectarine
fruit tree
orchard cultivation
preharvest treatment
climate change
drought
irrigation
water deficit
nitrogen fertilization
postharvest disease
pruning
fruit production
post-harvest durability
Opis:
Fruit production should be adapted to future scenarios that are frequently associated with scarce resources, especially freshwater and fertilizers. New biologically-based fruit production strategies, i.e. taking into account tree growth and water status, are required to optimize irrigation and fertilization under abiotic stress conditions. It was hypothesized that a moderate abiotic stress, here deficit irrigation with or without nitrogen deficit, in the preharvest period, could decrease postharvest losses due to diseases and pruning weights due to reduced vegetative growth, without sacrificing the yield and fruit quality. This study was conducted over two years using the same trees of ‘Moncante’ nectarine cultivar grown in a commercial orchard. Trees were assigned to three treatments: (1) full irrigation at 80% estimated crop evapotranspiration (ETc), (2) deficit irrigation, i.e. at 75% of full irrigation, and (3) deficit irrigation and deficit nitrogen, i.e. at 75% of full irrigation and 75% of usual N-fertilization adopted by the grower in this commercial orchard. Deficit irrigation alone and in combination with deficit nitrogen reduced postharvest diseases and pruning weights without significant yield losses. Our results suggest that ETc-based approaches of reduced water irrigation may be a sustainable way to decrease phytosanitary inputs and workload in the orchard while maintaining the orchard performance.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 1; 207-217
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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