“…Brassicaceae oilseed meals represent a particular type of meals; despite the similar N and phosphorous (P) content with respect to sunflower, no genetically improved seeds contain glucosinolates (GLSs) that through enzymatic hydrolysis via myrosinase produce a series of biologically active compounds (mainly isothiocyanates) (Fahey et al, 2001) that have shown an effect in controlling weeds (Ascard and Jonasson, 1991;Vaughn and Berhow, 1998;Vaughn et al, 2006;Rice et al, 2007), insect pests (Elberson et al, 1996(Elberson et al, , 1997, nematodes (Walker, 1996;Lazzeri et al, 2009), and soilborn pathogens (Smolinska et al, 1997;Manici et al, 1997;Mazzola et al, 2001;Chung et al, 2002). On the other hand, some authors demonstrated also significant allelopathic effects on seedlings of crops seeded after soil incorporation of brassicaceous crops with high GLS content (Jafariehyazdi and Javidfar, 2011), whilst for transplant crops, such as field vegetables, only minor effects on plant growth are reported (Haramoto and Gallandt, 2004;Ackroyd and Ngouajio, 2011). In any case the biocidal activity was clearly related to GLSs-type and concentration Vaughn, 1999;Bending and Lincoln, 2000).…”