Significant attention was paid in all developed countries to the agriculture until the seventies of the last century. It was due to the food deficiency in the post-war period. The period of the intensive agriculture production in the former Czechoslovakia lasted longer, due to the necessity of the high self-sufficiency in food feed and raw materials, produced in the agriculture in the closed system of the socialistic economy. The care for agriculture and soils caused in all countries the boom — golden era of soil science. Not only the basic research aimed at the problems of soil productivity, but especially the soil survey and interpretation of soil maps for agricultural practice was in progress. More sophisticated methods in soil mapping were reflected in the assessment of the soil cover heterogeneity, which is the basis of the regional application of the use and cultivation of agricultural lands. The mentioned concepts have not been developed in the survey of forest soils and natural grasslands because the attention is focused mort the characterization of the soil condition of the forest types or phytocenoses then of soil mapping. This causes some inconsistence in the classification of soils with different uses. In this way the conditions for the unification of the classification of both agricultural and forest soil and the CIS have been created. After the boom of the support of agriculture and pedology, aimed at the rising of the production and soil productivity passed, the production has been champed and pedology has been oriented especially on environmental functions of soils.
In an agricultural landscape small midfield ponds fulfill biocenotic and physiocenotic functions. A variety of species settle in areas of midfield ponds. The aim of our studies was to determine whether the occurrence of aquatic and marsh species in the studied bodies of water is a random effect or a result of spatial autocorrelation. On the basis of conclusions from ESDA, the hypothesis of spatial randomness can be rejected, which opens the way for searching spatial regimes. The review analysis of the spatial data (ESDA) with the use of join-count statistics showed that there is a positive spatial correlation for the midfield ponds in the agricultural area of the Pyrzyce-Stargard Plain in the distribution of ten aquatic and rush species for a distance of 1,250 m. The results of statistical analysis (ESDA) can constitute the basis for the choice and protection of midfield ponds as stop islands fulfilling functions of "mini" ecological corridors in spreading plant species.
Catchment of the Mielnica Stream is situated in Trzebnica Mills area, covered with loess soils and under an intensive agricultural use, Bathometrical and hydrometrical measurements were taken in the hydrological years 1982/83-1993/94. Daily and periodical masses of a suspended load carried out through the hydrometrical cross-section, flow and unit run-off rates were analysed. The weight of total measured annual sediment ranged from 2.56 Mg to 295.94 Mg. Value of the mean annual flow rate, at the catchment closing cross-section, ranged from 8 to 191s-1 and the maximum daily values from /8 to 434 /s-1. Additional analyses of water chemical composition were made in the years 1988-1990. Sixteen different chemical compounds and elements were investigated. Calculated chemical denudation indices were determined by the hydrometeorological conditions.
The weather conditions in winter 2011/2012 in Poland caused severe frost killing of winter crops (in most areas up to 90%) requiring spring resowing. This brought about a considerable impact of chemical plant protection. The paper presents results from two farms, belonging to a State Treasury company, with intensive agricultural production, located in the Wielkopolska voivodship. The number of plant protection treatments increased due to resowing from 39.9 to 81.4%, depending on the farm, and the amount of used p.p.p.(plant protection products) increased from 51.9 to 153.7%. Costs of used p.p.p. increased overall by 28.5%. The value of multi-criteria index of pesticides negative impact on the environment increased from 18.8 to 39.8% in farms 1 and 2. Identifying extremes in plant protection will allow more accurate than only on the basis of average values, planning and calculation of effect in production, as well as projections of adaptation processes to the changing conditions of production caused by the on-going global climatic changes.
Montia linearis is a vascular plant originating from western North America. The expansion of this species has been observed for several decades. For the first time M. linearis was found in Europe in 1989. Further six populations were documented by 2004 within the continent: three in Poland, two in Denmark and one in Hungary. Apart from discovering a new population of M. linearis, we confirmed two out of the three previously known localities of the species in Poland. All the currently known populations of M. linearis occupied predominantly meadow habitats, especially intensively managed sites. Some individuals were also found in disturbed sites with bare soil. The studied species inhabited soils of various types with broad range of fertility as well as humidity. Montia linearis populations reached densities up to 87 individuals per 0.04 m2. The number of seeds produced by an individual was between 10 and 55 in 90% of the studied specimens, however much more fertile specimens were also observed. As the previously presented hypothesis of M. linearis dispersal with rail transport seemed not to be well supported, the connection between the M. linearis presence and cattle husbandry is considered. It is possible that the species can be transferred with living animals or manure. The species was able to survive for at least 26 years within once inhabited site. Further spread of M. linearis within Europe is highly probable. The aim of the study is to: (i) describe the current state of populations of M. linearis in Poland, (ii) provide information on habitat preferences and biology of the species, (iii) assess the invasiveness potential of M. linearis in Poland.
Umiejscowienie płodozmianów w systemach produkcji roślinnej wymaga ustalenia nazewnictwa tych systemów, a następnie kryteriów i granic specjalizacji. Wyróżniono trzy systemy: intensywny, średniointensywny i ekstensywny. Podstawą charakterystyki tych systemów były dane z literatury i technologie produkcji poszczególnych ziemiopłodów: zalecane (IUNG) - intensywna i standardowa oraz powszechnie stosowana w gospodarstwach indywidualnych (IERiGŻ). Opracowano 6 modelowych płodozmianów spełniających podstawowe kryteria doboru i następstwa roślin oraz ich technologii, przypisywane wyróżnionym grupom. W charakterystyce liczbowo-punktowo-słownej grup płodozmianów uwzględniono wiele wskaźników technicznych, produkcyjnych, ekologicznych i ekonomicznych. Zakładając, że w Polsce będą stosowane wszystkie trzy główne systemy produkcji roślinnej i reprezentujące je grupy płodozmianów, spełnienie podstawowych kryteriów ekologicznych, ekonomicznych i strategicznych w kraju będzie uwarunkowane właściwymi proporcjami między nimi.