Potential Suppression Effects of Aqueous Extracts of Selected Plants on Growth of Carrot Weed (Parthenium hysterophorus L.) in Arusha, Tanzania

Abstract

This study investigates the potential suppression effects of aqueous extracts derived from selected plants on the growth of carrot weed (Parthenium hysterophorus L.) in Arusha, Tanzania. The research aimed to explore natural and sustainable methods for managing the proliferation of this invasive weed species. Through a series of laboratory experiments, aqueous extracts were prepared from specific plants namely amaranth (Amaranthus spinous L.), neem (Azadiratchta indica L.) wheat millet (Sorghum bicolor), and marigold flower (Tagetes erictus L.). The extracts were tested against carrot weed in the laboratory and pot experiment for their effectiveness in inhibiting the germination and growth of carrot weed seeds under controlled conditions. Lea