Figure 6: Effect of faba bean root exudates on germination of broomrape seeds in vitro: (a) Pure faba bean root exudates (b, c and d) mixture of faba bean root exudates and compost tea (v/v). Note different radical malformation is formed by adding compost tea to faba bean root exudates after 7 days of preconditioning period (par 0.5 mm).