1 DISTURBED WATER BALANCE OF AGRICULTURAL PLANTS IN 2009: FROM DROUGHT TO HEAVY RAIN |
Andreja Sušnik, Tjaša Pogačar |
Environmental Agency of Slovenia, Slovenia |
Abstract |
The vegetation period of 2009 was mainly characterised by a diversity of crop water supply disturbance. Heavy rain caused disturbances in north-eastern and central parts of Slovenia. It affected wheat production to such an extent that the Government passed amendments and supplements to the Decree on Financial Aid in Case of Unpredictable Events in Agriculture. However, in the littoral, agricultural plants were affected by drought stress. This article deals with the meteorological circumstances during the vegetation period and their impact on crop water balance. It concludes with a discussion on the “de minimis” provision and crop water balance monitoring development at the Environmental Agency of the Republic of Slovenia. |
2 BULLETIN of Ministry of the Environment and Spatial Planning - CENTER ZA UPRAVLJANJE S SUŠO V JUGOVZHODNI EVROPI (DMCSEE) V SLOVENIJI – KAKO DO TRAJNEGA DELOVANJA? |
Andreja Sušnik, Jožef Roškar |
Environmental Agency of Slovenia, Slovenia |
3 HOP BULLETIN 2009 |
Slovenian Institute of Hop Research and Brewing, Slovenia |
4 HOP BULLETIN 2010 |
Slovenian Institute of Hop Research and Brewing, Slovenia |
5 IMPACT OF CLIMATE CHANGE ON MAIZE YIELD IN SOUTH BULGARIA |
Zornitsa Popova |
Institute of Soil Science “Nikola Poushkarov, Bulgaria |
Abstract |
Sustainability of maize grain yields is studied at one of the hottest and driest agricultural region in Bulgaria - Stara Zagora by model simulations. WINISAREG model, previously validated for two maize hybrids of different resistance to water stress in a vertisol and a chromic cambisol soils, is used. Simulations are performed for present and scenario built weather conditions that include a pessimistic scenario of precipitation decrease in the next 25 years. Results indicate that vulnerability to climate change is higher for non-irrigated crops on the soil of average/low water holding capacity (chromic cambisol). Coping with possible rainfall decreases requires adopting less sensitive crop varieties, including when deficit irrigation would be applied for water saving. |
Keywords: maize, yield sustainability, ISAREG model, climate variability/change, rainfall decrease, Bulgaria |
6 AGROFORUM 2010 |
6a DELKELET-EUROPAI ASZALYKEZELO KOZPONT |
Bihari Zita |
Orszagos Meteorologiai Szolgalat, Budapest |
6b ASZALYINDEX-SZAMITAS ES-TERKEPZES MAGYARORSZAGRA A DMCSEE JERETEBEN |
Lakatos Monika, Orszagos Meteorologiai Szolgalat, Budapest |
Szalai Sandor, SzIE Mezogazdasag-es Kornyezettudomanyi Kar, Kornyezettudomanyi Intezet, Talajtani es Agrokemiai Tanszek |
7 THE POSSIBILITIES OF DROUGHT MONITORING USING SPI MAPS / MOGUĆNOST PRAĆENJA SUŠE PRIMENOM KARATA SPI |
Pavel Benka, Atila Bezdan, Jasna Grabić, Atila Salvai |
Faculty of Agriculture, University of Novi Sad |
Abstract |
This paper presents possibilities of monitoring the spatial analysis of drought occurrence using SPI drought maps. Maps are made based on observed precipitation data collected from 28 principal meteorological stations in Serbia. Interpolation of SPI values was done using Ordinary Kriging method, which belongs to the group of geostatistical interpolation methods. Three maps are made for the territory of Serbia, map of SPI calculated at one-month scale (SPI1), three-month scale (SPI3) and at six-month scale (SPI6), for the august 2003. Based on the analysis of all three drought index maps, very unfavourable moisture conditions are detected in the whole territory of Serbia in the observed period. |
Keywords: SPI, ordinary kriging, drought, GIS |
8 CONTEMPORARY AGRICULTURE |
The Serbian Journal of Agricultural Sciences |
Faculty of Agriculture, University of Novi Sad |
NOVI SAD, Vol. 59, No. 3-4, 2010 |
9 MAIN HYDROLOGICAL STATISTICAL CHARACTERISTICS OF LOW WATER ON THE BARCĂU/BERETTYÓ STREAM |
Károly Konecsny, National Inspectorate for Environment, Nature and Water |
G. Bálint, VITUKI Environmental Protection and Water Management Research Institute |
Abstract |
Main hydrological statistical characteristics of low water on the Barcău/Berettyó stream. Water deficits in low water periods caused by dry periods leading to droughts often are accompanied by considerable damage in the Tisa/Tisza Basin. Owing to the transboundary character of the river and also communal, industrial and considerable agricultural irrigation water demands assessment of low water conditions is utmost important. The Barcău/Berettyó stream entering into the Crişuri/Körös river network is the secondary left bank tributary of Tisa. The catchment is shared by Romania (56%) and Hungary (44%). Daily streamflow data for the description of low flow conditions are available since 1950, namely 55 and 58 years long series for Sălard (RO) and Berettyóújfalu (HU) consequently. Lower reaches of the river were considerable modified during the 19th century river training and flood protection works including the topology and geometry of channel network, while the hydrological regime of the upper hilly and undulating regions remained nearly natural until 1977. Low water thresholds for the analysis of low water events were set by using different statistical approaches. Temporal changes of hydrological regime and low water events are described by the comparison of nearly equally long periods of observed daily flow series (28 and 30 years). Time independent and time dependent block extreme statistics are used to describe low water distributions. |
Keywords: minimum discharge, low flow periods, hydrological statistical analysis, transboundary rivers, water uses, discharge values probabilities. |
10 LOW WATER RELATED HYDROLOGICAL HAZARDS ALONG THE LOWER MURES/MAROS RIVER |
Károly Konecsny, National Inspectorate for Environment, Nature and Water |
G. Bálint, VITUKI Environmental Protection and Water Management Research Institute |
Abstract |
Hydrological hazards associated with low flow periods at the lower section of the Mures/Maros River. Long periods of low water with possible water shortages may lead to considerable losses. Despite this fact hydrological statistical analysis of such periods is poorly represented in publications. Water management of low water periods requires careful handling and needs deep professional knowledge. These necessities are especially emphasised on transboundary rivers, where decision making towards the proper measures can be reached only with the agreement of the interested countries. The 30.322 km2 Mures River Basin is mostly in Romania (92%) and only a minor part falls to the territory of Hungary (8%). Flow records along the lower Mures at Arad (in Romania) and Mako (in Hungary) are more than 50-year long. As it concerns anthropogenic impact observations cover different periods. Discharge series until 1980 are only slightly influenced, while the impact of climate change and other factors can be investigated by the comparison of low flow series for 1951-1980 and 1978-2007 consequently. Discharge values of different probabilities can be compared and their temporal changes investigated. |
Keywords: minimum discharge, low flow periods, hydrological statistical analysis, transboundary rivers, water uses, discharge values probabilities. |
11 A KISVIZEK HIDROLÓGIAI STATISZTIKAI ÉRTÉKELÉSE A FEKETE-KÖRÖS FOLYÓ ALSÓ KÖZÖS ROMÁN-MAGYAR |
Károly Konecsny |
Országos Környezetvédelmi, Természetvédelmi és Vízügyi Főfelügyelőség |
Kivonat |
A folyó vízgyűjtőjének nagyobb része Románia területére, kisebb része Magyarország területére esik. A kisvízi jelenségek kezelése fokozott odafigyelést feltételez, mert a rendelkezésre álló vízkészleteket a két ország meg kell ossza. A kisvizek részletes hidrológiai feldolgozásához szükséges napi vízhozam adatsorok hossza mintegy 50 év. Az alsó, síkvidéki folyószakasz medre a XVIII-XX. századi szabályozási, töltésépítési munkák következtében jelentősen átalakult, a felső szakaszon azonban a vízjárás 1977-ig természeteshez közelinek tekinthető, ezt követően, a kiépült belvízelvezető csatorna-rendszer és a vízhasználatok hatása miatt a vízhozamok módosultak. A kisvízi időszakok elkülönítéséhez szükséges vízhozam küszöbértékeket a szakirodalomból ismert statisztikai módszerrel határoztuk meg. A vízjárási változásokat, a vízhiányos időszakokat a napi kisvízhozam idősorok alapján értékeljük. |
Keywords: kisvízi időszak, vízhozam küszöbérték, kisvízi vízjárás, víztömeghiány, lineáris trend |