The evaluation of biological-agricultural results in multi-directional plant cultivation in the crop-rotation system and in conditions of extreme specialization - the monoculture system;
Evaluating the possibilities of diminishing the negative-biological and production results of continuous cultivation by pesticide application;
The economic evaluation of input, the structure and efficiency of human labour and accumulated energy spent on the agro-technological process. The experiment was carried out in two phases. In the first phase, on the basis of technological cards, including agro-technological activities, material input, obtained yield, the group of proper equivalents, very detailed documentation for each species was made. The results of the above are presented in annexes 1-5 [RZESZUTEK et al. 1995/96, TAWFlK SALAM et al. 1995/96a, 1995/96b, ZAWIŚLAK et al. 1995, 1995/96]. In the second phase, this dissertation was written as a synthesis of data enabling the comparison of the experimental objects for all plant species. Working with the data, the common methods of natural yield evaluation was used (grain, seeds, roots) as well as the adventive crop (straw, leaves). The data was also calculated into cereal units, fodder protein, and energy values. In order to evaluate economic input and profit, the methods and equivalents used by Polish economists in their works were applied [ANUSZEWSKI 1987, BŁAŻEK and WIELICKI 1990, FEDEJKO et al. 1994, GOLEMO and MICHALEK 1988, HARASIM 1991, HARASIM et al 1991, KUŠ et al. 1988, LIPIŃSKI and ORLIŃSKI 1992, MACIEJKO 1984, NOWACKI 1988, PAWLAK 1987, 1988, RZESZUTEKI and SOBCZ-AK 1992, SOBCZAK et al 1990, SOBCZAK 1982, SOBCZAK and SIEDLISKI 1988, WIELICKI 1988, 1990a, I 990b, 1990c, WÓJCICKI 1981, ZAREMBA 1986] The source data from the basic experiments underwent transformation into production conditions. The scientific literature in agriculture accessed in Poland and abroad was examined.
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