The Institute of Soil Science and Plant Cultivation – State Research Institute, in accordance with the Act of the Minister of Agriculture and Rural Development has developed the climatic water balance values for all 2477 Polish municipalities (gminas) and, based on soil categories, calculated the current risk of agricultural drought.
In the eighth reporting period, i.e. from June 1st to July 31st, 2020, the average of Climatic Water Balance values, which are the basis for assessing the risk of agricultural drought, was negative and equalled -20 mm. In the analysed period it has decreased by 48 mm in relation to the previous reporting period (May 21st – July 20th) but increased in relation to the first reporting period (March 21st – May 20th) - by 80 mm.
The largest water deficit, ranging from -160 to -199 mm, was still recorded in the area of Szczecin Coastland (Uznam, Wolin, the Plains: Wkrzańska, Wełtyńska, Pyrzycka, and the Bukowe Hills), where it has increased in relation to the previous reporting period (May 21st – July 20th) by 10 mm. Considerable water shortages, from -120 to -159 mm, were still recorded in the western part of the Pomeranian and Greater Poland Lake Districts. In the vast areas of the country water deficit ranged from -50 to -119 mm whereas in the southern regions no crop water deficit was recorded.
Based on the current humidity conditions, IUNG-PIB states agricultural drought in the area of Poland.
Agricultural drought was stated in the following voivodeships:
Agricultural drought affected the following crops:
In the eighth reporting period, from June 1st to July 31st, 2020, the highest risk of agricultural drought occurred for maize for grain. Agricultural drought in this crop was recorded in 295 gminas (11.91% of all gminas in Poland). In relation to the previous reporting period, the number of gminas affected by agricultural drought has increased by 175, which constitutes an increase of 7.07%.
Drought in maize for grain occurred in 10 voivodeships, in the area of 2.11% of arable land (increase of 1.53%). Table 1 presents detailed data on drought occurrence in maize for grain in particular voivodeships.
Tab. 1. Agricultural drought in maize for grain
| No. | Voivodeship | Number of local districts | Number of local districts at risk | Share of local districts at risk [%] | Share of the area at risk [%] |
|---|---|---|---|---|---|
| 1. | zachodniopomorskie | 113 | 86 | 76.11 | 19.72 |
| 2. | wielkopolskie | 226 | 108 | 47.79 | 6.01 |
| 3. | lubuskie | 82 | 37 | 45.12 | 6.15 |
| 4. | dolnośląskie | 169 | 29 | 17.16 | 1.69 |
| 5. | pomorskie | 123 | 16 | 13.01 | 0.24 |
| 6. | łódzkie | 177 | 8 | 4.52 | 0.38 |
| 7. | warmińsko-mazurskie | 116 | 5 | 4.31 | 0.01 |
| 8. | podlaskie | 118 | 3 | 2.54 | 0.03 |
| 9. | podkarpackie | 160 | 2 | 1.25 | 0.00 |
| 10. | kujawsko-pomorskie | 144 | 1 | 0.69 | 0.00 |
In this reporting period agricultural drought occurred also in maize for silage. It was recorded in 295 gminas in Poland (11.91% of all gminas in the country). In relation to the previous reporting period, the number of gminas affected by agricultural drought has increased by 175, which constitutes an increase of 7.07%.
Drought in maize for silage occurred in 10 voivodeships, in the area of 2.11% of arable land (increase of 1.53%). Table 2 presents detailed data on drought occurrence in maize for silage in particular voivodeships.
Tab. 2. Agricultural drought in maize for silage
| No. | Voivodeship | Number of local districts | Number of local districts at risk | Share of local districts at risk [%] | Share of the area at risk [%] |
|---|---|---|---|---|---|
| 1. | zachodniopomorskie | 113 | 86 | 76.11 | 19.72 |
| 2. | wielkopolskie | 226 | 108 | 47.79 | 6.01 |
| 3. | lubuskie | 82 | 37 | 45.12 | 6.15 |
| 4. | dolnośląskie | 169 | 29 | 17.16 | 1.69 |
| 5. | pomorskie | 123 | 16 | 13.01 | 0.24 |
| 6. | łódzkie | 177 | 8 | 4.52 | 0.38 |
| 7. | warmińsko-mazurskie | 116 | 5 | 4.31 | 0.01 |
| 8. | podlaskie | 118 | 3 | 2.54 | 0.03 |
| 9. | podkarpackie | 160 | 2 | 1.25 | 0.00 |
| 10. | kujawsko-pomorskie | 144 | 1 | 0.69 | 0.00 |
In the eighth reporting period agricultural drought affected also fruit shrubs. It was recorded in 198 gminas in Poland (7.99% of all gminas in the country). In relation to the previous reporting period, the number of gminas affected by agricultural drought has increased by 4.64%.
Agricultural drought in fruit shrubs occurred in 7 voivodeships, in the area of 1.87% of arable land (increase of 1.18 of arable land). Table 3 presents detailed data on drought occurrence in fruit shrubs in particular voivodeships.
Tab. 3. Agricultural drought in fruit shrubs
| No. | Voivodeship | Number of local districts | Number of local districts at risk | Share of local districts at risk [%] | Share of the area at risk [%] |
|---|---|---|---|---|---|
| 1. | zachodniopomorskie | 113 | 80 | 70.80 | 21.83 |
| 2. | wielkopolskie | 226 | 73 | 32.30 | 4.17 |
| 3. | lubuskie | 82 | 21 | 25.61 | 3.68 |
| 4. | dolnośląskie | 169 | 18 | 10.65 | 0.99 |
| 5. | warmińsko-mazurskie | 116 | 3 | 2.59 | 0.00 |
| 6. | pomorskie | 123 | 2 | 1.63 | 0.01 |
| 7. | podlaskie | 118 | 1 | 0.85 | 0.01 |
Agricultural drought occurred in legumes as well. It was recorded in 163 gminas in Poland (6.58% of all gminas in the country). In relation to the previous reporting period, the number of gminas affected by agricultural drought has increased by 100, i.e. by 4.04%.
Agricultural drought in legumes occurred in 6 voivodeships in the area of 1.10% of arable land (increase of 0.82%). Table 4 presents detailed data on drought occurrence in legumes in particular voivodeships.
Tab. 4. Agricultural drought in legumes
| No. | Voivodeship | Number of local districts | Number of local districts at risk | Share of local districts at risk [%] | Share of the area at risk [%] |
|---|---|---|---|---|---|
| 1. | zachodniopomorskie | 113 | 73 | 64.60 | 12.94 |
| 2. | wielkopolskie | 226 | 59 | 26.11 | 2.35 |
| 3. | lubuskie | 82 | 13 | 15.85 | 2.26 |
| 4. | dolnośląskie | 169 | 15 | 8.88 | 0.70 |
| 5. | warmińsko-mazurskie | 116 | 2 | 1.72 | 0.00 |
| 6. | pomorskie | 123 | 1 | 0.81 | 0.00 |
Agricultural drought occurred also in ground vegetables. It was recorded in 52 gminas in Poland (2.10% of all gminas in the country). In relation to the previous reporting period, the number of gminas affected by agricultural drought has increased by 41, i.e. by 1.66%.
Agricultural drought in ground vegetables occurred in 4 voivodeships, in the area of 0.17% of arable land (increase of 0.15% in relation to the previous reporting period). Table 5 presents detailed data on drought occurrence in ground vegetables in particular voivodeships.
Tab. 5. Agricultural drought in ground vegetables
| No. | Voivodeship | Number of local districts | Number of local districts at risk | Share of local districts at risk [%] | Share of the area at risk [%] |
|---|---|---|---|---|---|
| 1. | zachodniopomorskie | 113 | 36 | 31.86 | 2.62 |
| 2. | lubuskie | 82 | 5 | 6.10 | 0.21 |
| 3. | wielkopolskie | 226 | 8 | 3.54 | 0.16 |
| 4. | dolnośląskie | 169 | 3 | 1.78 | 0.00 |
In the current reporting period agricultural drought affected also spring cereals. It was recorded in 40 gminas in Poland (1.61% of all gminas in the country). In relation to the previous reporting period, the number of gminas affected by agricultural drought has decreased by 9, which constitutes a decrease of 0.37%.
Agricultural drought in spring cereals occurred in 3 voivodeships in the area of 0.13% of arable land, which constitutes a decrease of 0.08% in relation to the previous reporting period. Table 6 presents detailed data on drought occurrence in spring cereals in particular voivodeships.
Tab. 6. Agricultural drought in spring cereals
| No. | Voivodeship | Number of local districts | Number of local districts at risk | Share of local districts at risk [%] | Share of the area at risk [%] |
|---|---|---|---|---|---|
| 1. | zachodniopomorskie | 113 | 31 | 27.43 | 2.04 |
| 2. | lubuskie | 82 | 5 | 6.10 | 0.13 |
| 3. | wielkopolskie | 226 | 4 | 1.77 | 0.09 |
Agricultural drought affected also tobacco. It was recorded in 40 gminas in Poland (1.61% of all gminas in the country). In relation to the previous reporting period, the number of gminas affected by agricultural drought has increased by 30, which constitutes an increase of 1.21%.
Agricultural drought in tobacco occurred in 3 voivodeships in the area of 0.13% of arable land, which constitutes an increase of 0.12% in relation to the previous reporting period. Table 7 presents detailed data on drought occurrence in tobacco in particular voivodeships.
Tab. 7. Agricultural drought in tobacco
| No. | Voivodeship | Number of local districts | Number of local districts at risk | Share of local districts at risk [%] | Share of the area at risk [%] |
|---|---|---|---|---|---|
| 1. | zachodniopomorskie | 113 | 31 | 27.43 | 2.07 |
| 2. | lubuskie | 82 | 5 | 6.10 | 0.15 |
| 3. | wielkopolskie | 226 | 4 | 1.77 | 0.09 |
Agricultural drought occurred also in winter cereals. It was recorded in 3 gminas in Poland (0.12% of all gminas in the country). In relation to the previous reporting period, the number of gminas affected by agricultural drought has decreased by 21, i.e. by 0.85%.
Agricultural drought in winter cereals occurred in 2 voivodeships, Table 8 presents detailed data on drought occurrence in winter cereals in particular voivodeships.
Tab. 8. Agricultural drought in winter cereals
| No. | Voivodeship | Number of local districts | Number of local districts at risk | Share of local districts at risk [%] | Share of the area at risk [%] |
|---|---|---|---|---|---|
| 1. | lubuskie | 82 | 2 | 2.44 | 0.03 |
| 2. | zachodniopomorskie | 113 | 1 | 0.88 | 0.00 |
Agricultural drought occurred in strawberries as well. It was recorded in 3 gminas in Poland (0.12% of all gminas in the country). In relation to the previous reporting period, the number of gminas affected by agricultural drought has decreased by 1, i.e. by 0.04%.
Agricultural drought in strawberries occurred in 2 voivodeships. Table 9 presents detailed data on drought occurrence in strawberries in particular voivodeships.
Tab. 9. Agricultural drought in strawberries
| No. | Voivodeship | Number of local districts | Number of local districts at risk | Share of local districts at risk [%] | Share of the area at risk [%] |
|---|---|---|---|---|---|
| 1. | lubuskie | 82 | 2 | 2.44 | 0.03 |
| 2. | zachodniopomorskie | 113 | 1 | 0.88 | 0.00 |
Agricultural drought occurred in hops. It was recorded in 3 gminas in Poland (0.12% of all gminas in the country), in 2 voivodeships. Table 10 presents detailed data on drought occurrence in hops in particular voivodeships
Tab. 10. Agricultural drought in hops
| No. | Voivodeship | Number of local districts | Number of local districts at risk | Share of local districts at risk [%] | Share of the area at risk [%] |
|---|---|---|---|---|---|
| 1. | lubuskie | 82 | 2 | 2.44 | 0.03 |
| 2. | zachodniopomorskie | 113 | 1 | 0.88 | 0.00 |
Agricultural drought affected also potatoes. It was recorded in 2 gminas in Poland (0.08% of all gminas in the country). Table 11 presents detailed data on drought occurrence in potatoes in particular voivodeships.
Tab. 11. Agricultural drought in potatoes
| No. | Voivodeship | Number of local districts | Number of local districts at risk | Share of local districts at risk [%] | Share of the area at risk [%] |
|---|---|---|---|---|---|
| 1. | lubuskie | 82 | 2 | 2.44 | 0.02 |
Agricultural drought occurred also in fruit trees. It was recorded in 2 gminas in Poland (0.08% of all gminas in the country). Table 12 presents detailed data on drought occurrence in fruit trees.
Tab. 12. Agricultural drought in fruit trees
| No. | Voivodeship | Number of local districts | Number of local districts at risk | Share of local districts at risk [%] | Share of the area at risk [%] |
|---|---|---|---|---|---|
| 1. | lubuskie | 82 | 2 | 2.44 | 0.01 |
In the first and second decade of June, the highest temperatures (from 14 to 16°C in the 1st and from 19.5 to more than 20.5°C in the 2nd decade) were recorded in the vast area of Central Poland. In the south and north of the country it was colder, from 12 to 14°C in the first and from 16 to 19.5°C in the second decade. The third decade of the month was the warmest in the eastern regions, with temperatures ranging from 20 to more than 20.5°C. In the majority of areas, the recorded temperatures ranged from 19 to 20°C. The lowest recorded temperatures occurred in the southwestern part of Poland: 16-19°C.
The first and third decade of July were highly diversified in terms of temperature distribution, with lower temperatures in the north (16-18.5°C) and higher in the south (18.5°C to more than 20°C). In the second decade of the month the lowest temperatures were recorded in the south of Poland, reaching up to 16.5°C. The highest values exceeding 18°C were recorded in Lubuskie voivodeship, in Masovia and the Greater Poland Lake District.
In June precipitation was intense in vast areas of the country throughout the month, ranging from 15 to 100m (in the second and third decade even exceeding 100m). However, in the first and second decade of the month, in the northwestern part of the country precipitation was less intense, from less than 5 to 15 mm. Similar precipitation values were recorded in the Silesian, Kraków-Częstochowa and Małopolska Uplands in the first decade, and in Podlasie Lowland in the second decade of the month.
In the first decade of July precipitation was highly diversified as well: small but numerous areas with heavy storms and rainfalls ranging from 20 to 50 mm occurred throughout Poland, accompanied by scarce precipitation (up to 10 mm) in southwestern regions of the country. In the second decade of the month the highest precipitation values ranging from 30 to more than 100 mm were recorded in the south of the country, and in the Iława and Chełmno-Dobrzyń Lake Districts. The lowest precipitation values, below 15 mm, were recorded in the Lubusz Land, Szczecin Lowland, Gdańsk Lake District, eastern part of the Masurian Lake District and Podlasie Lowland. In the third decade of the month, in the vast majority of the country, precipitation reached up to 10 mm or no precipitation occurred. Small-range stormy rainfalls occurred only in scattered locations, reaching from 10 to 35 mm.
As stated by IUNG-PIB, the largest crop water deficit in the period of June 1st to July 31st is recorded in the north-western part of Poland.
Intense precipitation in the vast areas of the country occurring throughout the period under consideration resulted in a small water surplus. Considerable excess of water is still recorded in the southern parts of following voivodeships: Dolnośląskie, Opolskie, Śląskie, Małopolskie, Podkarpackie, Lubelskie and Mazowieckie.
The area affected by agricultural drought has decreased in relation to the previous reporting period in the following crops:
In case of the above crops, the number of gminas and the percentage of the potential area of arable land affected by agricultural drought have decreased as well.
In the same time, the range of agricultural drought has grown for the following crops:
Lack of sufficient precipitation can still be observed in the north-western part of Poland, where it leads to considerable water deficit in soil. Due to a constant water shortage, agricultural drought is still recorded in the following voivodeships: Zachodniopomorskie, Wielkopolskie, Lubuskie, Pomorskie and Dolnośląskie. To a lesser extent, water deficit is also affecting crops in Łódzkie, Warmińsko-mazurskie, Podlaskie, Podkarpackie and Kujawsko-pomorskie.
Executive Director
Prof. dr hab. Wiesław Oleszek
Report prepared by: Dr hab. Andrzej Doroszewski, prof. IUNG-PIB, Dr hab. Rafał Pudełko, Dr Katarzyna Żyłowska, Dr Jan Jadczyszyn, Mgr Piotr Koza, Mgr Elżbieta Wróblewska, Mgr Agata Ścibior