subject area of Abundance and diversity of plant-parasitic nematodes associated with watermelon in Nigeria, with focus on Meloidogyne spp. First Report of Zucchini yellow mosaic virus Associated with Leaf Crinkle and Yellow Mosaic Diseases of Cucurbit Plants in Mali. Free-living nematode assemblages in the rhizosphere of watermelon plants in Nigeria: a baseline study Productivity of species in cassava/maize/okra/ egusi melon complex mixtures in Nigeria Some analytical aspects of cassava/maize/okra/ egusi-melon complex mixture: I. Soil temperature in relation to leaf-area variation Watermelon-infesting Tephritidae fruit fly guild and parasitism by Psyttalia phaeostigma (Hymenoptera: Braconidae)