University of Khartoum

Allelopathic Effects of Alfalfa (Medicago sativa) on Seed Germination and Seeding Growth of Selected Vegetable Crops

Allelopathic Effects of Alfalfa (Medicago sativa) on Seed Germination and Seeding Growth of Selected Vegetable Crops

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Title: Allelopathic Effects of Alfalfa (Medicago sativa) on Seed Germination and Seeding Growth of Selected Vegetable Crops
Author: Ibrahim, Sahar Yahia El-Tayeb
Abstract: This study was conducted in the Department of Horticulture, Faculty of Agriculture, University of Khartoum, Shambat, in 2002, to study the effect of alfalfa Medicago sativa on seed germination and seedling growth of rocket, onion, squash, and okra. The study composed of two experiments, laboratory experiment and nursery experiment. In the laboratory experiment, seeds of rocket, onion, and squash were germinated in aqueous extracts of alfalfa plant parts (Alfalfa seed extract, alfalfa root extract, and alfalfa seed extract). The three aqueous extracts caused reduction in germination percentage of the three crops compared to the control. Alfalfa leaf extract caused the greatest reduction, where as alfalfa root extract caused the least reduction in germination. The nursery experiment was composed of three treatments, chopped alfalfa plant parts mixed with sand, alfalfa plant grown in sand, and soil collected from the root rhizosphere of alfalfa plants. Chopped alfalfa and growing alfalfa resulted in decreased seedling emergence, plant height, and plant dry weight compared to control, while soil collected from the root rhizosphere of alfalfa plants increased seedling emergence, plant height, and plant dry weight of rocket, onion, and okra.
Description: 200341 Pages
URI: http://khartoumspace.uofk.edu/handle/123456789/10380
Date: 2015-05-07


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