Proliferacy of some segetal weed species in a canopy of different field crops on light and heavy soils
2000
Podstawka-Chmielewska, E. | Kwiatkowska, J. | Kosior, M. (Akademia Rolnicza, Lublin (Poland). Katedra Ekologii Rolniczej)
The paper presents the results of proliferacy of 21 weed species on light (podzolic) soil and of 23 species on heavy soil (rendzina) found in canopy of winter and spring grain crops, rape and in root crops. The plants used in the studies were picked at random from various places between July and August of 1997. Their proliferacy was determined on the basis of 30 specimens. The studies show that the proliferacy of the examined weed species was affected by the conditions created by the canopy in which they grew. Generally, the greatest amount of diaspores was produced by the weeds growing in root crops, and the smallest number - by those which grew in grain crops. Besides, proliferacy of the examined weeds, independent of the field plant, was characterized by considerable individual changeability, which was related to the given species and the habitat conditions
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