Drought episodes in the Czech Republic and their potential effects in agriculture

Potop, Vera; Türkott, Luboš; Kožnarová, V.; Možný, Martin

doi:10.1007/s00704-009-0148-3

Cited by 30 publications

(13 citation statements)

References 32 publications

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“…The main findings of these studies include variations in dates of onset, small proportion of rainy days supplying high proportion of rainfall and occurrence of dry spells that disrupt crop development and lower yield in SSA. Similar results have been found in the Czech Republic where standardised precipitation index, percentage of long-term precipitation index (r) and Ped drought index (S i ) were used as tools in identification of the severity, frequency and extent of drought episodes (Potop et al 2010).…”

Section: Introductionmentioning

confidence: 56%

Determination of seasonal rainfall variability, onset and cessation in semi-arid Tharaka district, Kenya

Recha

Makokha

Traoré

et al. 2011

Theor Appl Climatol

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The study quantified rainfall variability for March-May (MAM) and October-December (OND) seasons in Tharaka district, Kenya. The parameters analysed were inter-annual variability of seasonal rainfall, onset and cessation using daily rainfall data in three agro-ecological zones' stations. Percentage mean cumulative method was used to determine onset and cessation, and seasonal variability was estimated using rainfall variability indices. Although both seasons are highly variable, OND has been persistently below mean over time while MAM shows high within-season variability. Despite the near uniformity in the mean onset and cessation dates, the former is highly variable on an inter-annual scale. The two rainfall seasons are inherently dissimilar and therefore require specific cropping in agro-ecological zone LM4 and LM4-5. It is possible that farmers in IL5 are missing an opportunity by under-utilising MAM rainfall. The results should be incorporated in implications of climate variability and vulnerability assessment in semi-arid Tharaka district.

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Section: Introductionmentioning

confidence: 56%

Determination of seasonal rainfall variability, onset and cessation in semi-arid Tharaka district, Kenya

Recha

Makokha

Traoré

et al. 2011

Theor Appl Climatol

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“…Intermittent periods of water stress can occur during spring (early drought) and summer (terminal drought; e.g. Łabędzki 2007; Potop and Soukup 2009;Potop et al 2010). Compared to Mediterranean and tropical/subtropical dry climates, stress is mostly of short duration and intermediate severity only.…”

Section: Plant Resistance To Droughtmentioning

confidence: 99%

Management of crop water under drought: a review

Bodner

Nakhforoosh

Kaul

2015

Agron. Sustain. Dev.

455

234

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Drought is a predominant cause of low yields worldwide. There is an urgent need for more water efficient cropping systems facing large water consumption of irrigated agriculture and high unproductive losses via runoff and evaporation. Identification of yield-limiting constraints in the plant-soil-atmosphere continuum are the key to improved management of plant water stress. Crop ecology provides a systematic approach for this purpose integrating soil hydrology and plant physiology into the context of crop production. We review main climate, soil and plant properties and processes that determine yield in different water-limited environments. From this analysis, management measures for cropping systems under specific drought conditions are derived. Major findings from literature analysis are as follows. (1) Unproductive water losses such as evaporation and runoff increase from continental in-season rainfall climates to storage-dependent winter rainfall climates. Highest losses occur under tropical residual moisture regimes with short intense rainy season. (2) Sites with a climatic dry season require adaptation via phenology and water saving to ensure stable yields. Intermittent droughts can be buffered via the root system, which is still largely underutilised for better stress resistance. (3) At short-term better management options such as mulching and date of seeding allow to adjust cropping systems to site constraints. Adapted cultivars can improve the synchronisation between crop water demand and soil supply. At long term, soil hydraulic and plant physiological constraints can be overcome by changing tillage systems and breeding new varieties with higher stress resistance. (4) Interactions between plant and soil, particularly in the rhizosphere, are a way towards better crop water supply. Targeted management of such plant-soil interactions is still at infancy.We conclude that understanding site-specific stress hydrology is imperative to select the most efficient measures to mitigate stress. Major progress in future can be expected from crop ecology focussing on the management of complex plant (root)-soil interactions.

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“…This can affect besides others agriculture and stream ecosystems. There is a variety of different impacts on agriculture such as decrease of crop yields (Potop et al, 2010) or higher demands on irrigation and on stream ecosystems such as temporal loss of habitat for aquatic organisms or loss of stream connectivity (Lake, 2003). Moreover, the needs of sustainable stream ecosystem management can be opposite to human needs related mainly to agriculture and water supply (Baron et al, 2002;Gordon et al, 2008).…”

Section: Introductionmentioning

confidence: 98%

Analysis of Available Retention Volume in Extinct Ponds – Case Study for Blanice River Catchment

David

Davidová

2015

Agriculture and Agricultural Science Procedia

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The risk of increasing frequency and duration of dry periods has become much more discussed topic with respect to expected climate change. This can result in water scarcity for different purposes. Besides others, agriculture and river ecosystems can be mentioned as those which can suffer from droughts. The retention of the landscape is therefore still more accented. Increase of landscape retention capacity is considered as a good way to keep water in the landscape which can be then available during dry periods. Despite the most retention capacity consists in the soil, the volume of small water reservoirs must be considered as important in conditions of the Czech Republic. This results in increased demand for building new small water reservoirs spread in the landscape. However, there is a lack of suitable profiles for that due to relatively high population density in the Czech Republic. The restoration of extinct ponds is considered therefore as a good option for this purpose. The paper presents the results of GIS analysis of the volume of water which would be available in case of the restoration of extinct ponds in the catchment of the river Blanice (543 km 2 ). For this purpose, detail elevation data were used to avoid unacceptable error in volume estimates due to the sizes of considered areas. The results of analyses show that there is considerable retention volume available which could be used either to improve hydrologic conditions in stream network or for agricultural use consisting mainly in irrigations. Additionally, the results were compared to discharge data for three profiles on main major stream channels. In general, the results show how the building of new small water reservoirs can be used to mitigate droughts.

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Drought episodes in the Czech Republic and their potential effects in agriculture

Cited by 30 publications

References 32 publications

Determination of seasonal rainfall variability, onset and cessation in semi-arid Tharaka district, Kenya

Determination of seasonal rainfall variability, onset and cessation in semi-arid Tharaka district, Kenya

Management of crop water under drought: a review

Analysis of Available Retention Volume in Extinct Ponds – Case Study for Blanice River Catchment

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