Allelopathic effect of some vegetable peels in germination and growth of three ornamental plants

Abstract

The study was conducted at the University of Mosul/College of Science/Department of Life Sciences, and included experiment in the greenhouse to find out the effect of dry peelings of vegetables added to the soil at percentages (0.5,1,2)% weight: weight for Solanum tuberocm, Solanum melongena and Vicia fava incubated for two weeks on seed germination and some traits Growth and elemental concentrations

(Mg, K, P, N) of three species of ornamental plants, namely Dianthus caryophyllus, Gilardia aristata and Convolvulus tricolor.

The results of the greenhouse showed a significant effect and differences, an increase in % seed germination in ornamental plants when eggplant peels were added, while the addition of potato and bean peels led to a decrease in % seed germination, and significant differences in shoot length were superior to the treatment of adding eggplant and potato peels and inhibition was obtained by the effect of adding bean peels, an increase recorded shoot length and dry weight (23.91, 25.69, 30.88) g and root shoot length and dry weight (16.90, 15.22, (19.20) g sequentially, in the three ornamental plants, as well as an increase in the number of flowers, in the content of chlorophyll in the leaves of ornamental plants and in the concentration of elements (N, P, K, and Mg)%, while the bean extract inhibited most of the mentioned traits.