Fertilizing and Nematicidal Effect of Oleaginous Organic Amendements: Fertilizing and Nematicidal Effect of Argan, Castor and Neem Cake on Organic Cucurbits in Southwest Morocco

The aim of this work is to evaluate the impact of oil cakes amendments (argan, neem, castor cake and ground castor) on control of Meloidogyne spp., affecting cucumber and melon; on soil fertility; on the growth and yield of cucumber under greenhouse in south-western Morocco. In cucumber growing- greenhouse, experimental results showed a reduction of gall formation, soil nematodes density, root rot infestation, and improvement of plant height and yield as compared to the control. Argan cake improved yield 112% more than the control. Generally, argan cake gave better results compared to the other treatments. In pots experiment on melon, maximum suppression (100%) of root knots and soil larvae population were found with argan; castor cake and ground argan shoot; while neem cake was less effective. Argan cake resulted in 24% increase in fresh weight compared to the infested control, while ground argan shoot enormously decreased both height and weight