680 ATTEMPTS TO CONTROL INFESTATION OF POTATO CANOPY CULTIVATED USING ECOLOGICAL AND INTEGRATED CROP PRODUCTION SYSTEMS 1 Sawicka B., 2 Kuś J. 1 Department of Plant Production, University of Agriculture, Akademicka 15 20-950 Lublin, Poland, barbara.sawicka@ar.lublin.pl 2 Department of Systems Economics of Crop Production, IUNG, Osada Pałacowa 1, 24-100 Pulawy, Poland INTRODUCTION The far goes chemicalization of agriculture in UE, as it and in Poland is the reason the growing fears of societies about this or the consumed food is fully healthy or it does not contain harmful for health of remainder of toxic chemical centres. The systematic growth of interest is effect of this food come from production approximate to natural − ecological and integrated. Comparison of letting the run to weeds in these systems of husbanding was the aim of investigations from here also. Key words: potato, cultivars, production systems, infestation, weed control systems MATERIALS AND METHODS The results of the researches were based he the field experiment carried out in the years 1998-2000 at the experimental station IUNG Osiny on a soil of good rye complex. The experimental factors were made by: plant production systems (integrated and ecological); four potato cultivars. Potato tubers, in class A, were sown at spacing 70 x 35 cm. In each system there were various cropping systems and production technologies used. At the integrated system the phosphatic - potassium fertilization was introduced equivalent to the uptake of the following quantities: 110 kg N, 60 kg P 2 O 5 , and 60 kg K 2 O. Compost at a dose 35 t . ha -1 you used only once at crop rotation - i.e. under potato. The chemical treatments of plant protection were applied regarding agrophage damage thresholds. At the ecological system no fertilizations or pesticides were introduced, except preparation against potato beetle. Only two-year compost (strow + red clover + hay) was used under potato in amount 35 t ha -1 only once at crop rotation - i.e. under potato. The chemical treatments of plant protection were applied regarding agrophage damage thresholds. At the ecological system (potato  spring barley  clover and grass used for two years  winter wheat + aftercrop of white mustard and spring vetch) no fertilizations or pesticides were introduced, except Novodor and Permasect preparation against potato beetle. Only two - year compost (strow + red clover + supplement of manure) was used under potato in amount 35 t . ha -1 . Weed control in this system consisted in the harrowing with weeder till plant emergences, triple hillings and single hand hoeing prior to the last hilling. It frame method before potato's gathering was marked was letting run to weeds field on surface 1 m 2 . Quantitative determination were executed in three repetitions every combination of experience. It was defined was: weeds', number weeds' fresh and air-dry matter one - and dicotyledonous as well as their botanical composition according to Badowski and all [2001]. The results of investigations were having worked out with the help of the analysis of variance. It