The Republic of Poland has 38 500 000
inhabitants, an area of over 312 685 km2, a border length of 3 582 kilometres
(including 528 km of coast) and is divided into 16 administrative provinces. To the
north-east and east, it borders the Russian Federation, Lithuania, Belarus and Ukraine; to
the south, the Czech Republic and Slovakia; to the west, Germany (see Figure 1).
Figure 1. Map of Poland
Polish agriculture is in an economic crisis with a marked decrease in both production and farmers incomes and rising unemployment. Agriculture contributes six to seven percent of the Gross National Product but its share in employment is much greater it employs 1 900 000 people, 14 percent of all registered workers; moreover, there are about 2 000 000 people of pre - and post - productive age and disabled persons. Rural people comprise 38 percent of the population but rural unemployment is 46 percent of the total (i. e. about 2 000 000 people). Agriculture has therefore to cope with unemployment while preparing to be competitive on the market by the time of its entry into the European Union. Increased competitiveness could come from increasing farm size. Polish agriculture is characterized by many small farms: the average family farm is 6.7 ha of arable; 54.0 percent of family farms are under five hectares and 95.7 percent of all farms are under twenty hectares. The public sector share in cropland has fallen to less than 8 percent. Per capita area of arable land is now 0.36 ha.
The area under crops has decreased. In
1999, agricultural lands fell in comparison to 1990 by 285 000 ha (Tables 1 and 2, figure
2) and sown areas - by 1 657 000 ha. Barren and and unused lands increased by 163 000 ha.
According to the Ministry of Agriculture and Food Production the area of marginal soils
(unprofitable for production) is 3 700 000 4 700 000 ha; 1 500 000 ha
of the poorest soils are designated for afforestation.
Table 1. Land use (in thousand ha)
This means that cropland
may decrease to 14 000 000-15 000 000 ha; i.e.
2 000 000-3 000 000 ha below the area which guarantees sustainable
food production for 50 000 000 people, assuming annual meat consumption of 72 kg
The reduction in
agricultural land should therefore be compensated by an appropriate increase in
productivity, which depends mostly on agro-chemicals. Sixty percent of the crop increment
is estimated to be from fertilizer, 40 percent is ascribed to mineral fertilizer,
consumption of which increased to 195 kg/ha by 1989. Now farming has become more
extensive, which is shown by 2-3 times lower fertilizer use (Table 3), a constant decline
of crops (Table 4) and pesticide consumption 7 times lower than in OECD countries (0.59
kg/ha of active substance in 1999 and 0.52 kg in 1990). A decrease in fertilizer
consumption to 163.9 kg NPK/ha occurred in 1989/1990 and now (1998/1999) it is 87.4 kg
NPK/ha and is characterized by an unfavourable N:P:K ratio.
Table 3. Use of mineral fertilizers in kg/hectare on agricultural land
Polands oldest uplands and mountains were formed in the Tertiary. Old geological structures (like the Sudetes) were levelled and uplifted several times. Lowland relief was formed in the Pleistocene. The present relief of the north appeared during the last Baltic glaciation. Its remnants are characteristic postglacial forms: hills of front moraines, morainic plains, drumlins, glacial channels (sometimes with lakes), outwash plains and old river valleys. The geologically and morphologically oldest areas are in the south. The highest and largest is part of the Carpathian Mountains, divided in their Polish part into the Podkarpacie, the Beskidy Zachodnie, the Beskidy Srodkowe and the Bieszczady Zachodnie in the outer mountain zone and the Podhale with Pieniny and Tatra Mountains in the inner zone (see Figure 1).
The geologically oldest mountains - the Sudetes with the Przedgórze Sudeckie - are in the south-west. North of the mountains is an extensive upland area, which is divided into the Slaska, Woznicko-Wielkunska and Kielecka Uplands, the Holy Cross (Swietokrzyskie) Mountains, the Lubelska Upland and Roztocze. All these uplands slope north and west into the Srodkowopolskie Lowlands: the Poludniowowielkopolska Lowland, Wal Trzebnicki, the Slaska Lowland and the Mazovian Lowland, which turns eastward into the Podlaska Lowland
Lakelands (situated north of the lowlands), are divided into the Pomorskie, Wielkopolskie and Mazurskie Lakelands. North of the lakelands a belt of seashore lowlands extends to the Southern Baltic Coast, divided into the Szczecin, Koszalin and Gdansk Coasts.
Soils. Lowland and upland soils cover 92 percent of the area, those in the mountains, only 8 percent. Among the former the largest area is covered by a complex of podzolic, brown and grey brown soils (80 percent). Other types, which cover 16.5 percent, are: alluvial soils (4.5 percent), rendzinas (1 percent), black turf soils (2 percent), chernozem (1 percent) and bog soils (8 percent). Light soils are characteristic of lowlands and occupy over half (52.5 percent) of the country. Alluvial soils are typical of lower accumulation terraces of the Vistula valley. Bog soils mostly occur in the coastal zone, on lakelands, in the old Biebrza-Narew river valleys and between the Bug and Wieprz rivers. Black peat soils are found near Inowroclaw, Brzesc Kujawski, Blonie, Sochaczew, Wroclaw and Pyrzyce (see Figure 3).
Upland areas are rich in loess of the brown earth and chernozem class and in rendzinas typical of calcareous rocks. Many types, subtypes and classes of soils have been distinguished in detailed divisions depending on the relief differentiation, substrate, moisture, plant cover or evolutionary stage.
In the Sudetes and their foothills there is a variety of mountain soils of the podzolic and acidic brown soil types. Less diversified in that aspect are the Carpathians, which are dominated by the lithologically monotonous acidic brown and leached brown soils formed from clastic rocks. These sedimentary rocks of maritime origin are composed of interspaced layers of sandstone, siltstone, clay and marl shale and of conglomerates.
On the Carpathian Foothills a long belt
ranging from Oswiecim through Wieliczka, Bochnia, Brzesko, Pilzno, Rzeszów Lancut,
Przeworsk to the vicinity of Przemysl is lined with loess covered by brown and grey brown
soils and, sometimes, also by chernozem.
Figure 3. Soils
Grassland soils. Meadow soils are commonest in river valleys, through-flow valleys, old river beds, and various depressions but also on mountain slopes and high-mountain pastures where ground water level or steep slopes favour the development of meadow and pasture vegetation and prevent development for crops. Prevailing water regime creates an environment, which favours multi-species meadow swards. Therefore, these soils require different classification criteria from those applied to croplands. Two types of soils are distinguished on permanent grasslands in Poland:
I - soils formed from mineral formations with the following types: brown soils, chernozem, black turf soils, alluvial soils, rendzinas and gley soils created from non-silted and silted formations (called muck-bog soils)
II - organic soils (bog soils called also hydrogenic or hydromorphic soils); moss-peat, sedge, rush and alder peat belong to this class.
Further subdivisions are based upon
organic matter content and its thickness, on the type of soil established according to its
degree of mineralisation and on the advancement of soil processes. Qualitatively, six soil
classes are distinguished, which form the so-called productive complexes defined for the
management of the permanent grasslands. For fiscal and planning reasons associated with
the land trade, a quality index and an appropriate calculation coefficient of agricultural
usefulness (expressed in relative numbers - Table 5) has been prescribed for each soil
Table 5. Agricultural usefulness of permanent grasslands in Poland in relation to the soil quality classes
* range of a coefficient of agricultural usefulness respective to particular classes of meadow-pasture soils in relation to a given tax district
Climate: Polands climate is temperate, determined by air masses coming from the North Atlantic, from the region of the Azores, from the Arctic Sea, polar continental air from the northern part of Eastern Europe or tropical continental air masses from over south-east Asia. Thus, the climate is characterized by great weather variability, both seasonal and between years. Winters are wet, of the oceanic type, or fair of the continental type. Mean summer air temperatures vary from 16.5o C in the north to 19.0O C in the south and south-west; in winter mean air temperatures vary from 0 to -1O C at the sea-shore and in the west to -5O C in the north-east. Average annual precipitation is 600 mm being lower on lowlands (from 450 - 750 mm) and higher in the mountains (1200-1500 mm).
Climatic conditions for plant production are typical for the temperate zone, though marked differences may occur between regions: the growing season is longer and annual temperatures higher in the south and west. Transitory climates are characterized by:
- in the west - predominance of oceanic influences, lower temperature amplitudes, early springs and summers, short winters;
- in the east - predominance of continental influences, greater amplitudes increasing eastward, long summer, especially in the south, long and cold winter;
- in the north - predominance of maritime impacts, cloudiness, amplitudes increasing landward, mild and short summer, winters shorter in the west and longer in the east;
- in the south - predominance of the impact from the mountains and uplands, lower temperatures, higher precipitation, variability of climatic conditions in relation to the altitude and exposure.
Based on climate properties the following climatic regions are distinguished: (see Figure 4).
- Pomorski Region. Prevalence of oceanic influences with the superimposed direct impact of the Baltic Sea. Small temperature ranges. Short, mild winters and summers. High precipitation dependent on aspect. Southward and eastward the effect of the Baltic Sea diminishes, winters tend to be longer, the number of cloudy days increases, precipitation decreases.
- Mazurski Region. Direct impact of the Baltic Sea (declining to the south and east) is interspersed with continental influences - weaker in the northern and western parts and stronger in the south and east. Greater temperature ranges tend to increase eastward. Summers are mild and short, winters - long, cold and snowy, especially in the east.
- Nadwislanski and Gdanski Region. Intermediate. Direct effect of the Baltic Sea is moderated by an impact of the lakeland hills. Summers are warmer and longer, winters - moderate. Low precipitation depends on the slope exposure.
- Slasko-Wielkopolski Region. Predominance of oceanic influences. Temperature ranges below average. Early, long and warm spring and summer, short and mild winter. Precipitation decreasing towards the centre of the country.
- Mazowiecko-Podlaski Region. Prevalence of continental influences. Temperature ranges greater than average, especially in the east. Early and rather long summer, longer and colder winter, especially in the east.
- Kujawski (with Northern Wielkopolska and Northern Mazovia) Region. Intermediate. A great number of cloudy days, the lowest precipitation in Poland.
- Lódzki Region. Intermediate with a mixture of oceanic and continental impacts.
- Malopolski Region with the Holy Cross (Swietokrzyskie) Mountains Upland. Oceanic influence pronounced and more marked in the west, continental in the east. Longer summer and winter. High precipitation, highest in the west.
- Lubelski Region. Upland. Predominance of continental influences. Long summer, long and cold winter. The greatest number of fair and hot days in Poland. High winter precipitation. A great daily temperature range.
- Sandomierski Region. Lowland with predominance of
continental influence and that from the neighbouring mountains and uplands. Many fair
days, long summer, long growing period, frequent hail showers.
- Sudecki Region. Predominance of oceanic influences. Sub-mountainous in the north-eastern part. Mountainous in the south-western part. Temperature decreases, summer shortens and winter lengthens with increasing altitude. High precipitation in the south.
- Karpacki Region. Marked oceanic impact in the western part, in the central and eastern part continental influence prevails. Sub-mountainous in the northern part, mountainous in the western and southern part. Temperatures decrease, summer shortens and winter lengthens (especially in the east) with increasing altitude. High precipitation in the west dependent on the aspect.
- Podkarpacki Region. Intermediate, lowland. Predominance of influences from neighbouring mountains and uplands. Long and warm summers. Many cloudy days.
Thermal conditions and distribution of precipitation enable cultivation of most temperate zone crops in almost the whole country; they do not favour, however, soybean and maize for grain and limit second crops after harvesting cereals; in the north and east of the country they limit also cultivation of plants with high thermal requirements. A significant water deficit occurs in dry years, so irrigation is needed to obtain relatively high yields.
Yields of potatoes, sugar beet, rye, wheat, barley and oats as well as of winter rape, legumes and forages are fairly good. The type of crops is chiefly determined by soil quality, thus there is uneven distribution of plants which require high fertility soils like sugar beet, wheat, barley, lucerne (Medicago sativa) or red clover.
A basis for increased productivity is the regulation of the water supply. According to the Institute of Crops, Fertilization and Soil Science, soils with a good water regime occupy 44 percent of the area, excessively wet - about 20 percent and semi dry and dry soils - 36 percent. Development of irrigation-drainage reclamation is thus required. Almost 6 700 000 ha of agricultural land have been reclaimed up to now, but 2 750 000 ha still await reclamation. Irrigation is required on 1 800 000 ha, 1 500 000 ha of which are grasslands (data from the Ministry of Agriculture and Food Production). Regulation of the water regime on grasslands has an ecological aspect and improves the productivity of such habitats.
There are many signs of soil deterioration: about 20 percent of Poland is affected by hydraulic and aeolian erosion and over 30 percent of soils are seriously acidified. The amount of humus in soils is falling and the effect of the flood of 1997 can easily be seen - with the loss of fertile top soil and increased acidification of 500 000 hectares.
Obviously, livestock are the factor stimulating efficiency of permanent grasslands. The most important are cattle and sheep, which inspire farmers to find and mobilize fodder reserves, found mostly in meadows and pastures. Total reduction of the number of these two groups of animals in the last decade of political transformation (Table 6) does not help the economic efficiency and proper care of permanent grasslands and fodder from arable land. According to the Main Statistical Office (1997), fallow and barren land occupied 1 799 200 ha of agricultural land at the end of 1996, of which 948 400 ha were on private farms. A reduction of grazing animals (Table 6) cannot improve biological and technical progress and other yield-forming factors, for example those associated with the soil and with mineral fertilizers, consumption of which also drastically declined (Table 3). This has resulted in a "backward" agriculture compared to that of most countries of Western Europe.
To obtain high yields from meadows and pastures it is necessary to grow high-yielding mixtures and to develop the best ways of green fodder preservation. There is still much to be done in this aspect.
Table 6. The number of farm animals (in absolute numbers and per 100 ha of agricultural lands)
* 1999 as % 1985/86; ** seven countries of Western Europe: Denmark, France, Spain, The Netherlands, Germany, Great Britain, Italy in 1996;
Supply of slaughter stock (cattle, pigs, sheep, horses
and poultry) to the market was 3 628 500 tons in 1999 i.e. 2.4 percent more then
a year before and the total production was 4 360 000 tons (Table 7). At the end of March
1999 pig stock was 18 900 000 head but changes in herd structure (a decrease in the number
of sows by 3.1 percent and of piglets by 1.6 percent) clearly shows the farmers
actions to reduce livestock keeping.
Table 7. Production of slaughter stock, milk and eggs
Cattle have declined gradually from June 1990 - June 1999 by almost 3 500 000 head (35 percent) and stock density per 100 ha of croplands decreased from 54 to 26.3 individuals. Dairy cows decreased in number by 1 500 000 head (over 30 percent) in the same period and their number per 100 ha decreased from 31 to 19. Private farms contribution to animal production increased from 82.8 percent in 1990 to 93.8 percent in 1999. At the beginning of 1999 cattle totalled 6 455 000 head. A decline of dairy cow numbers continued - from only 0.7 percent in December 1998 to 3.5 percent in June and 5.0 percent in December 1999. Milk production, with fewer cows and an average annual production of 3 465 litres per cow (3 491 litres in 1998), achieved 11 763 000 000 litres, down by 23.5 percent on 1990 (Table 7).
In Poland pastures are a separate category of cropland. Their physiographic features associated with the shape, location and specifics of meadow habitats and associations enable their rapid transformation into arable land. Since the type of grassland is strictly related to its habitat, the latter is a basis of grassland typology. For lowland meadows the division was elaborated by Bury-Zalewska and Pronczuk (1954), improved by Pronczuk (1962) and modified by Grzyb (1996). For mountainous regions the typology was elaborated by Kielpinski and Nowak (1954). Physiography of terrain, water-air relations and the type and fertility of soils were adopted as a basis for classification.
To make the principles of typology easier to understand, all lowland meadow habitats can be presented in the form of a triangle (Figure 5), the sides of which depict the borders between meadow and other habitats and vertices - habitat systems most extreme in hydration, fertility and air relations in soil. The upper apex of the triangle refers to the driest, poorer and well aerated habitats, lower left - to rich habitats and lower right - to wet and poorly aerated habitats. Considering various habitat features the triangle has been divided into sections representing the division of lowland grasslands into groups and types. The sections, marked with digits and letters in the figure, indicate the respective groups and types of meadows. Groups are encircled by a triple line and types - by a single line. In this system, natural permanent grasslands in Poland are divided into three typological groups:
I - flooded meadows: A - proper flooded meadows, B - with flowing water, C - with stagnant water
II - dry meadows: A - post-flooded dry meadows, B - moistened meadows, C - proper dry meadows, D - impoverished dry meadows, E - waterlogged dry meadows
III - boggy and post-bog meadows: A - flooded, B - partly flooded, C - proper boggy meadows, D - "moorsched" (meadows not dependent on soil type)
I- Flooded meadows are mainly in river valleys or on the margins of lakes - on the so-called flood terraces. Water supply is cyclic - flood is followed by water draining to a river or a lake or valley. Therefore, water content in the meadow varies throughout the growing season. Floods result in the formation of alluvial soils. There is a tendency for organic matter accumulation at a distance from open water due to poor soil aeration. Soils dominating here are: alluvial soils, mud-gley soils, peat-gley soils, peat-mud and sometimes peat soils. Flooded meadows are characterized by a high vegetation composed mainly of grasses and sedges. Dominating species from the associations Cynosurion Tx, Arrhenaterion Br. Bl., Phragmition Koch and Magnocaricion Koch are: Alopecurus pratensis, Arrhenatherum elatius, Poa palustris, Glyceria aquatica, Phalaris arundinacea, Carex acuta.
II - Dry meadows - occur on higher ground and are mainly fed by atmospheric precipitation. On slopes and in the depressions of dry valleys, dry meadows use seepage from ground water or that flowing down from higher ground. As the moisture supply of these sites is thus correlated with precipitation and with seasonal ground water movement. Dry meadows develop on various mineral soils Diversified vegetation is found here, generally however, less so and having a greater ability for turf formation than that on flooded meadows. Dominant species of the class MolinioArrhenatheretea Koch i FestucoBrometea Br. Bl are: Poa pratensis, Festuca rubra, Agrostis vulgaris, Nardus stricta, Alopecurus pratensis, Trifolium repens, Agrostis stolonifera, Deschampsia caespitosa, Juncus refusus, J. conglomeratus, and Carex panicea.
III -Boggy and post-bog meadowsBoggy and post-bog meadows are found in sites without an outflow, or in wide river valleys and are fed mainly by ground water. Such conditions favour the growth of sedges and mosses and enhance peat-forming processes. After reclamation boggy meadows transform into the post-bog meadows with typically muck soils. Vegetation on both boggy and post-bog meadows does not form a compact sward in spite of species diversity within particular genera. Organic soils are the substrate for these meadows. Dominating species of the class Molinio Arrhenatheretea Tx are Festuca rubra, Carex glauca, Poa pratensis, Alopecurus pratensis, Phalaris arundinacea and of the class Schenchzerio Caricetea fuscae North Carex nigra, Carex panicea, Calamagrostis sp., Carex acutiformis, Carex rostrata, Carex vesicaria, Carex lasiocarpa, Carex paradoxa.
Typology of mountain meadows. Forest is the dominating plant formation in the mountains. Grass associations are mostly of anthropogenic origin resulting from a replacement of forests (after logging) with grasslands. All forms of the mountain landscape are small, close to each other and characterized by great dynamics of processes. The nature of these processes is, however, the same as on lowlands thus flooded, dry, and boggy habitats can be found there.
Grasslands are a source of fodder and have also some non-production functions, in all aspects they are environmentally friendly. Their location is usually associated with the physiography. Most Polish grasslands are on soils with high ground water (river valleys, lake margins) or on hilly areas with steep slopes i.e. in habitats unsuitable for other crops. Playing the landscape and protective role in the environment, grasslands are, first of all, a valuable source and the cheapest ruminant fodder, which, especially in summer, may be the only food for cattle. A comparison of the costs of obtaining one oat unit (this unit, the equivalent of one kilogramme of oat grain, was previously widely used in Eastern Europe; 1 barley unit = 0.06 oat units) from various types of fodder shows that pasture is the cheapest fodder. These costs expressed in relative numbers are as follows:
The total area of permanent grassland is over 4 100 000 ha, which comprises 13.2 percent of the country area and 22.3 percent of all agricultural land. The private sector uses 3 600 000 ha of grassland, 87.9 percent of the total. The number of farms with permanent meadows and pastures was 1 871 700 and comprised 61.0 percent of the total. Mean area of the permanent grassland in the private sector was 1.8 ha, that in the public sector 213.0 ha.
Permanent meadows covered an area of 2 800 000 ha in 1996 and comprised 66.9 percent of all permanent grassland while the area of permanent pastures was 1400 000 ha, 33.1 percent of all grasslands. Permanent meadows were owned by 1 698 000 farms i.e. 55.4 percent of farms (mean area 1.5 ha/farm) and permanent pastures were possessed by 784 000 farms i.e. 25.6 percent of farms (mean area 1.4 ha/farm). In comparison with the past a marked shift has taken place from grazed to mown area, from pastures to meadows. This means an extensifying of agricultural production in general and on permanent grasslands in particular.
As much as 64 percent of nutritional units were obtained
from field fodder crops, which covered 30.1 percent of the total fodder area in 1996 (main
crop only), thus more than from combined meadows and pastures covering almost 70 percent
of the total fodder area (Table 8). This is a result of abandoning production on parts of
the permanent grasslands or of their being abandoned (Table 9).
In practice, there are several ways of using meadows and pastures; they can be exploited by free grazing (extensively), tethering livestock (intensive use but extensive management), rotational grazing without cutting the excess fodder and variable use with single or double cutting on parts every year.
Meadows can also be used by cutting once (extremely extensive), twice (semi-intensive) and three or four times (intensive use). Rotational pastures and meadows, especially those intensively used, require regulation of the water regime and intensive fertilization with at least 450-525 kg NPK ha at the proper N:P:K ratio (1:0.25:0.5). No other crops respond better to intensive fertilization than grasslands. At this level of fertilization and the proper N:P:K ratio, we might expect hay increments of 20-25 kg per kg NPK i.e. 12 - 13 tons of hay per ha and the total yield (at a mean yield of 5 tons/ha of hay from an average meadow) of 17-18 tons of herbage per hectare or about 85-95 tons of the raw material for haylage production.
From among various ways of grazing the most
rational and useful in farms seems to be limited and paddock grazing wi th a typical
(10-14 paddocks) or a decreased number of quarters (4-8). In every case this is a
rotational grazing. Parameters to calculate pasture area and animal stock are given in
Table 10. At an alternating (mown-pasture) system, given areas should be enlarged by
*) utilization of the pasture is assumed at 80% (20% of unused fodder), which gives the daily consumption of 70 kg green mass per animal
The number of paddocks on a sub-divided pasture is estimated from the number of days needed for sward to regrow during autumn (September-October) and from the number of grazing days of one quarter in rotation. At moderate soil-climatic conditions and on good pastures regrowth period lasts:
In the classic quarter way, the period of grazing for one quarter in rotation is 3-4 days, in that of limited number of quarters: 7-10 days.
Alternate mown-pasture utilization increases the yield by 5-10 percent and results in more equilibrated botanical composition of the sward. This optimum composition comprises 60-70 percent of grasses (low, medium and high grasses in a similar proportion), 20-30 percent of legumes (mostly Trifolium repens) and herbs as a dietary-palatable component. Herb plants should constitute ca. 10 percent. This type of utilization favours the formation and maintenance of a strong, resilient turf, which determines proper management and enhances the growth of a compact sward yielding 0.4-0.5 t of green fodder per ha per each cm of height of its main mass. This type of meadow and pasture management improves also fodder utilization by animals (unused food is lower even by 10 percent), yielding repeatability and distribution (more uniform supply throughout the season) and fodder quality.
Pasture sward should be dense and have a good and diversified botanical composition. The following species should dominate: Lolium perenne, Poa pratensis, Phleum pratense, Dactylis glomerata, Festuca pratensis, F. rubra, Agrostis alba and Trifolium repens. The contribution of each species depends on the soil type and moisture, on the trophic status of the habitat and on fertilizer used.
Trifolium repens is of special importance for
rational pasture management due to its high ability to fix atmospheric nitrogen by
bacteria of the genus Rhizobium. This allows decreased mineral fertilizer use since
grasses use this nitrogen with almost the same efficiency as that delivered with mineral
fertilizers. It is best to introduce Trifolium in a mixture with grasses when
managing or renewing the grassland. Examples of grass mixtures for meadows and pastures
developed in the Institute for Land Reclamation and Grassland Farming are presented in
Tables 11 and 12.
Table 11. Seed mixtures used in management or in renewing lowland pastures, after Grzyb 
Table 12. Seed mixtures used in management and in renewing lowland meadows after Grzyb 
Application of mineral and organic fertilizers
(particularly in large doses) without knowing the soil nitrogen, phosphorus and potassium
contents is irrational. Figures presented in Table 13 refer to meadows, and the given
doses of phosphorus and potassium fertilizers allow to obtain 8.0-12.0 tonnes of hay/ha
under Polish conditions. Plant samples are collected from the beginning of earing to the
flowering of most grasses on meadows (May 20th - June 20th).
Threshold figures for determining soil requirements of potassium and phosphorus for
pastures should thus be increased because this form of management of grasslands is more
intensive than only by cutting.
Table 13. Phosphorus and potassium content in a grass sward at the first cut
Optimum annual nitrogen doses on mineral soils range from 60 to 240 kg N/ha and those on organic soils - from nil (at places with an intensive mineralisation of organic matter) to 140 kg N/ha. Small nitrogen doses are recommended for pastures on light mineral soils in semi-dry habitats, where there is only adequate moisture in spring. Large doses are only applied on moderately compact humus soils, which due to an appropriate ground water supply, are well watered and covered by valuable grasses (so-called intensive species) of good yield.
Fertilization of pastures with phosphorus is indispensable inter alia due to better nitrogen and potassium use and to an improvement of the fodder quality. Phosphorus doses are basically determined by its content in fodder (optimum range 0.40-0.45 percent in dry weight) and vary between 40 and 90 kg P2O5 per ha. Phosphorus can be applied once annually at the seasons given earlier. Use of high percent superphosphates is recommended.
Annual potassium rates for the lowland parts of Poland vary between 60 and 180 kg K2O per ha and single doses - between 30 and 60 kg K2O/ha. The amounts of nutrient that return to the soil in animal faeces should be considered when calculating fertilization level of pastures. Potassium "cycling" in the system animal-soil-plant amounts, depending on the K content in fodder, is from 15 to 25 kg K2O per ha from one cow. At a stocking rate of three livestock units per hectare this is between 45 and 75 kg K2O/ha. Potassium does not pose a threat to water quality and its management should be determined by its content in fodder and by the total yield.
Liming of pastures on mineral soils is necessary when pHKCl
drops below 5-5.5, depending on the soil type. Liming is intended to improve soil pH,
structure and fertility; lead to a better use of other nutrients by plants, improve
botanical composition of a sward by stimulating legumes and result in improved fodder
quality. Requirements for liming and calcium doses in relation to soil pH (according to
the Institute for Land Reclamation and Grassland Farming)) are given in Table 14. Lime
should be applied as the carbonate or as calcium-magnesium salts in autumn. Frequent but
smaller doses are better than the reverse.
Table 14. Liming requirements and doses recommended for mineral soils of humus content between 1.25 and 5 percent of oxidizable carbon
Supplementary fertilization of pastures with copper at a rate of 5-10 kg Cu/ha (equivalent to 20-40 kg/ha of copper sulphate technical grade) should be done when the copper content of the green fodder is lower than 7 mg Cu/kg dry weight. It is best to apply copper once in several years sprinkling 4% solution or spreading a solid, well ground preparation.
Manure and liquid (fermented and unfermented) manure are used as organic fertilizers. Manure composts (manure after a years fermenting) at a rate of 30 tons once per 2-4 years are recommended for pastures. Mineral fertilization may be unnecessary in the year of manure application. Composted manures have no obnoxious odour, do not pollute the sward (low ammonium losses) and are easily absorbed by turf. They do not contain pathogenic microbes. Application of fermented liquid manure to pastures is limited for zootechnical reasons. Its can be used only in the early spring (after the soil is thawed out). A single dose of liquid manure is 10-20 m3/ha and an annual dose up to 50 m3. Liquid manure can be applied every year.
Caring for pastures consists of an early spring levelling of molehills and dung-pats with grassland drags and harrows. Topping grazed pastures is also recommended. Caring for pastures also means repairing and maintaining fences, water-supplies and roads. Reclamation installations - ditches (silt removal, repairs of banks and slopes damaged by animals), culverts (removal of silt and other obstacles to water flow) and water lifting devices - need special attention. It is recommended that animals be given salt-licks with microelements, regardless of the mineral content in the green fodder, on every pasture.
Economic differences between meadows and pastures arise from the different milk producing efficiency of green forage and hay and from the costs of their acquisition. Depending on the method of conservation (drying and silage) these differences may reach 30-42 percent and even more with poorly made hay. Differences can be reduced by switching (in a massive scale) from drying the hay on the meadow to drying with the method of active ventilation or to the production of haylage, which is a basis for nutrition of meat and dairy cattle in Western Europe. In Poland, however, the amount of haylage only slightly exceeds three percent of all bulk fodder. Low quality bulk fodder is associated with the low unit cow efficiency, thus the production is expensive and less competitive than that in EU countries.
The basic reason, why silage production is uncommon, is the lack of a tradition and the limited agricultural knowledge of producers. The role and economic importance of permanent and rotational pastures will increase with the increasing prices of concentrates, milk and beef. Increasing the number and types of specialist equipment for collection and preservation of meadow fodder and more favourable price relationships between the means of production and dairy and meat products would further enhance the efficiency of our grasslands. Grasslands may successfully be used as a source of raw material for valuable green dried fodder. It might be used to enrich nutritional doses in an intensive breeding of meat and dairy cattle. Poland has a rich tradition in producing dried fodder on permanent and alternate grasslands (800 000 tons were produced annually in the past) and a considerable technical background.
Full agricultural utilization of productive space like meadows and pastures will require the following actions in the years to come:
The task of research institutes under the Ministry of Agriculture are scientific studies, their implementation and dissemination within their specialty. One of the forms of such activity is the preparation of instructive materials (printed training materials, brochures, leaflets, video tapes, instructions etc.) for the Centres of Agricultural Advice. The Centres are based in each of the 16 provinces and disseminate the material to regional advisory units, which co-operate with farmers directly. Two brochures prepared by the Institute for Land Reclamation and Grassland Farming in Falenty within the project FAO - TCP/RER/6711 may serve as an example of materials for farmers and their agricultural advisors:- "Niskonakladowe sposoby wypasu owiec w Karpatach Polskich" [Low budget methods of the sheep grazing in the Polish Carpathians] by Stanislaw Twardy, Robert G. Hamnett, Wydawnictwo IMUZ Falenty 2000;
- "Zakiszanie runi lakowej" [Silage of the meadow sward] by Jan Zastawny, Robert G. Hamnett, Halina Jankowska-Huflejt, Wydawnictwo IMUZ Falenty 2000;
Institutes and academic institutions carrying studies on meadow and pasture management and in animal production are shown below in tabular form.
Geograficzny atlas Polski. (1999) wyd. V. [Geographic atlas of Poland. Vth edition] Redakcja atlasu: Skiba M. Red.map:Bujno S. et al. CIP Biblioteka Narodowa.
Grzyb St. (1988). Mieszanki na laki i pastwiska trwale. [Mixtures for permanent meadows and pastures] Mat. Instr. 53.Wyd.2.Falenty IMUZ ss 36.
Grzyb St. (1996). Typologiczny podzial uzytków zielonych w Polsce oraz charakterystyka i zasady identyfikacji wazniejszych jednostek. W: Podstawy typologicznego podzialu uzytków zielonych i zasady ich inwentaryzacji. (Typology of grasslands in Poland and the characteristic and principles of identification some important units. In: The bases of typology of grasslands and their valorisation). Falenty: Wydawnictwo IMUZ.
GUS: Powszechny spis rolny. [General agricultural register]. Warszawa 1997.
GUS, - [Main Statistical Office], 2000.
Jankowska-Huflejt H. (1998). Ocena wplywu wieloletniego nawozenia obornikiem na stan i produktywnosc laki. Rozprawa doktorska,[Evaluation of the impact of a long-term manure fertilization on the meadow status and productivity. PhD thesis] IMUZ, maszynopis.
Kielpinski J.,Nowak M. (1954). Projekt podzialu typologicznego lak górskich. [A project of typology of mountain meadows] Postepy Nauk Rolniczych 4,s.71-77.
Kondracki J. (1980). Geografia fizyczna Polski. [Physical geography of Poland] Wyd. IV. Warszawa: PWN.
Michna W. (1999). Znaczenie rolnictwa dla gospodarki narodowej. W: Gospodarowanie na uzytkach zielonych w warunkach rolnictwa integrowanego. [The importance of agriculture for the state economy. In: Managing grasslands in the integrated agriculture]. Materialy Seminaryjne 44.
Moraczewsk R. (1996). Laki i pastwiska w gospodarstwie rolnym. [Meadows and pastures in a farm] Fundacja. Rozwój SGGW. Warszawa.
Moraczewski R., Zastawny J. (1999). Uzytki zielone jako jeden z kierunków gospodarowania w rolnictwie. W: Wspólczesne problemy melioracji, gospodarki wodnej, ksztaltowania i ochrony przestrzeni rolniczej w Polsce, a wymogi Unii Europejskiej. [Grasslands as one of the managing options in agriculture. In: Current problems of reclamation, water management, formation and protection of the agricultural space in Poland against the EU requirements]. Inf. Nauk. i Techn. (4) 1999.
Moraczewski R. (1997). Ocena gospodarki na trwalych uzytkach zielonych. [The evaluation of management on permanent grasslands]. Wiadomosci Lakarskie i Melioracyjne nr 2 s. 102. 105, 1997.
Lekawska I., Krynski K., Kowalczyk J., Loszewski A. (1995). Nawozenie NPK i nawozami gospodarskimi trwalych uzytków zielonych polozonych na glebach mineralnych. [Fertilization with NPK and with farm fertilizers of permanent grasslands on mineral soils] Falenty: IMUZ Mater. Instr. 112.
Nawozenie trwalych uzytków zielonych polozonych na glebach torfowo-murszowych. [Fertilization of permanent grasslands on peat-muck soils] (1992). W: Doradztwo nawozowe IMUZ. [Praca zbiorowa]. Falenty: IMUZ Mater. Instr. 104.
Pronczuk J. (1962).Typologiczne zasady zróznicowania uzytków zielonych na przykladzie wydzielonych typów florystycznych w dolinach rzek na nizu. [Typological principles of the grassland differentiation exemplified by the distinguished floristic types in the lowland river valleys] Biblioteczka, Wiadomosci IMUZ" nr 5,s. 65-191.
Sapek B. (1992). Zasady oceny potrzeb wapnowania i wyznaczania dawek nawozów wapniowych na trwale uzytki zielone na glebach mineralnych. [Principles of the assessment of liming requirements of and doses for permanent grasslands on mineral soils] Falenty: IMUZ Mater. Instr. 101.
Wasilewski Z. (1997). Urzadzanie pastwisk i organizacja wypasu w gospodarstwach farmerskich. W: Produkcja pasz objetosciowych w gospodarstwach specjalizujacych sie w integrowanym chowie bydla. [Pasture establishment and organization of grazing in farms. In: Bulk fodder production in farms specializing in an integrated cattle breeding] Falenty IMUZ, s. 59-72.
Witek T. et al. (1981).Waloryzacja rolniczej przestrzeni produkcyjnej Polski wedlug gmin. [Evaluation of the agricultural productive space in Poland by communes] Wyd. IUNG, Pulawy.
Zastawny J. (1993). Wartosc pokarmowa róznie konserwowanych pasz objetosciowych z uzytków zielonych w swietle badan chemicznych i zootechnicznych. [Nutritive value of variously preserved bulk fodder from grasslands in view of the chemical and zootechnical studies] Rozprawy habilitacyjne, Wydaw. IMUZ, ss. 102.
Zastawny J., Jankowska-Huflejt H. (2000). Stan i rola uzytków zielonych w obecnym rolnictwie Polski. W: Nowoczesne metody produkcji pasz na uzytkach zielonych i ocena ich wartosci pokarmowej. [Status and the role of grasslands in the current agriculture of Poland. In: Modern methods of fodder production on grasslands and an evaluation of their nutritive value] Mater. Semin. 45. Falenty: Wydaw. IMUZ, s. 9-17.