ARCHIVES (2017)
Do roku 2016 raport oznaczony numerem 1 był tworzony za okres od 1 kwietnia do 31 maja. Od roku 2017 analizy są wykonywane o dekadę wcześniej czyli 1 raport oznacza okres od 21 marca do 20 maja
Communication report regarding the incidences of drought conditions in Poland
Year: 2017; period: 04 (21.IV - 20.VI)
The Institute of Soil Science and Plant Cultivation – State Research Institute, in accordance with an Act of the Minister of Agriculture and Rural Development has developed the climatic water balance for all 2478 Polish local districts and, on the basis of soil categories, calculated the current risk of agricultural drought for the following crops: winter and spring cereals, grain maize and maize for silage, rape and turnip rape, potatoes, sugar beet, hops, tobacco, ground vegetables, fruit shrubs and trees, strawberries and legumes.
In the fourth reporting period, i.e. from April 21st t° June 20th 2017, IUNG-PIB stated agricultural drought conditions in Poland. The Climatic Water Balance values, which are the basis for assessing the risk of agricultural drought, are negative for the majority of areas.
In the current sixty-day reporting period drought occurs in:
- Spring cereals
Currently agricultural drought occurs in spring cereals cultivated on soils of Category I (very light soils), granulometric groups:
Loose sand
Loose dusty sand
Slightly loamy sand
Slightly loamy dusty sand
Agricultural drought in spring cereals occurs in 2 local districts in Poland, one in Lubuskie Voivodship (1.22% of all local districts in this voivodship) and the other in Warmińsko-Mazurskie Voivodship (0.86% of all local districts), i.e. 0.08% of all local districts in the country.
The average Climatic Water Balance value in Poland was -93 mm, and in the whole country CWB values were above -149 mm. It was yet another period with decreasing CWB values, which, however, were higher than critical values for the monitored crops. Therefore, currently, no risk of agricultural drought is stated for Poland, except for the above local districts.
The lowest Climatic Water Balance values ranging from -140 to -149 mm were recorded in several regions of Poland: The Lower Lusatian Depression, Wrocławska Proglacial Valley, The Masurian Lake District, Łomżyńskie Interfluve, and in the eastern part of the Masurian Plain.
Low Climatic Water Balance values occurred also in the Sasko-Łużycka Lowland, Leszczyńska and Kaliska Uplands, Masurian Lake District, Podlaska Lowland, Gdańskie Coastland, Polesie Lubelskie and Roztocze, where they ranged from -120 to -139 mm. Relatively large water deficiency, from -100 and -119 mm were recorded in vast areas of Eastern Poland.
Low water deficiency occurred in the Pomeranian Lake District, Polish Uplands and Carpathian Foothills, ranging from -50 to -70 mm.
May was warm this year, with air temperature ranging from 10 to 15ºC. The highest temperatures were recorded in the Silesian and Central Masovian Lowlands and in the Sandomierska Basin (14-15ºC), where they exceeded the multiannual norm by 0.5-1ºC. The lowest temperatures occurred in the north of the country, ranging from 11 to 13ºC. In the vast majority of the country temperature ranged from 13 to 14ºC and was close to the multiannual norm.
The first and second decades of June were characterised by highly diversified temperatures, and the air temperature distribution was similar in both periods. The lowest temperatures were recorded in the north-eastern part of the country, from even below 14 to 15ºC in the first decade and 1ºC higher in the second decade of June. In the western, south-western and eastern parts of the country the highest temperatures were recorded, between 16 and 18ºC. In the rest of the country air temperature ranged from 15 to 16ºC.
In May precipitation was also highly diversified. Precipitation from below 20 to 30 mm occurred in the Silesian Lowland and in the northern and north-eastern regions of the country, constituting 30-70% of the multiannual norm. In the vast majority of areas precipitation ranged from 30 to 50 mm, which is 70-90% of the norm. Very high precipitation (60-110 mm) was recorded in the Szczecińska and Podlaska Lowlands and in the Carpathian Foothills, where it constituted 100 to 170% of the multiannual norm. Particularly intense precipitation occurred in Podhale and Tatra Mountains, 110 to more than 130 mm, which constituted 100 to 110% of the multiannual norm.
The first decade of July was also highly diversified in terms of precipitation distribution. In the eastern part of the country it ranged from below 5 to 10 mm. More intense precipitation occurred in the western and central parts of Poland, ranging from 10 to 50, or even more than 60 mm. In the second decade, on the other hand, in the eastern and northern regions precipitation was relatively intense, from 10 to more than 60 mm. In the rest of the country it ranged from 5 to 20 mm.
Recently, a decrease of water resources can be observed for crop plants. In some regions of Poland water deficiency is growing, however, the current levels of water deficiency do not reduce the yield significantly.
Report prepared by:
Dr hab. Andrzej Doroszewski, associate professor
Dr hab. Rafał Pudełko
Dr Katarzyna Żyłowska
Mgr Piotr Koza
Mgr Elżbieta Wróblewska
Reports
- Report 14 (1.VIII - 30.IX)
- Report 13 (21.VII - 20.IX)
- Report 12 (11.VII - 10.IX)
- Report 11 (1.VII - 31.VIII) +
- Report 10 (21.VI - 20.VIII)
- Report 09 (11.VI - 10.VIII)
- Report 08 (1.VI - 31.VII)
- Report 07 (21.V - 20.VII)
- Report 06 (11.V - 10.VII) +
- Report 05 (1.V - 30.VI) +
- Report 04 (21.IV - 20.VI)
- Report 03 (11.IV - 10.VI)
- Report 02 (1.IV - 31.V)
- Report 01 (21.III - 20.V)
