Allelopathic effects of Amaranthus viridis L. on some growth characters of Swiss chard plant (Beta vulgaris var. Cicla))

A pot experiment was conducted at Faculty of Education, Alzaiem Alazhari University, Sudan, during 2019/2020 to evaluate the effect of Amaranthus viridis powder on the emergence and growth of Swiss chard (Beta vulgaris var. cicla). The experiment was set as a completely randomized design (CRD) with four replicates. In the treatments the powder of Amaranthus viridis was incorporated into the soil at rate of (0, 0.5, 1.0. 1.5 and 2.0% w/w) representing T1 (control), T2, T3, T4 and T5 respectively. Results indicated that Amaranthus viridis powder decrease germination, plant height, number of leaves, leaf area, shoot and root fresh and dry weight, chlorophyll content (a, b) and some chemical elements (P, Ca, Mg, Fe) of Swiss chard (Beta vulgaris var. cicla).