The dynamics of weed populations in vineyards

• Published in: Acta Horticulturae et Regio Tecturae (Slovak Republic) no. 1
• Main Author: Elias, P
• Format: Publication
• Language: English
• Published: 1996
• Subjects: DINAMICA DE POBLACIONES; DYNAMIQUE DES POPULATIONS; ECOLOGIA; ECOLOGIE; ECOLOGY; LABRANZA; MALEZAS; MAUVAISE HERBE; POPULATION DYNAMICS; REPUBLICA ESLOVACA; REPUBLIQUE SLOVAQUE; SEASONAL VARIATION; SLOVAK REPUBLIC; TILLAGE; TRAVAIL DU SOL; VARIACION ESTACIONAL; VARIATION SAISONNIERE; VIGNOBLE; VINA; VINEYARDS; VITIS; WEEDS

Population and seasonal dynamics of weed occurrence and abundance were studied for two years in cultivated vineyards near Velcice (Nitra district, SW Slovakia). The population dynamics were related to seasonal aspects of the weed community and frequency of disturbance (by soil cultivation). In the vineyards, the following three groups of weeds resulting from absence of autumn cultivation (spading) can be distinguished: winter weed species with high population density during winter and early spring; summer weed species with maximal population density in autumn, avoiding winter frosts by seeds and/or underground organs, and weed species with similar (usually low) population density during nearly the whole year. Short-living annuals and winter annuals, forming often more than one generation (cohort) during one year, are predominant at high population densities in the long after-harvest period (October to March). Summer annuals occur after soil cultivating, grow slowly at low population density in inter-cultivation times (hoeing), and terminate their life cycle in autumn. The population density of perennials varies, in relation to the strategy of vegetative reproduction and regenerative ability