The Major Contributions Of Science And Technology To The Development Of Agriculture In Sokoto State, Nigeria
The scientific research has developed a new alternative control measure for the root-knot nematode (Meloidogyne
incognita) of tomato in Sokoto state. The chemicals, nematicides used to control the nematodes are toxic to beneficial flora
and fauna in the soil. This research was conducted at the botanical garden in the Usmanu Danfodiyo University Sokoto.
Seedlings of the hybrid tomato cultivar (cv.) “Roma king” grown in a sandy-loam soil were inoculated with 500 eggs of
root-knot nematodes, Meloidogyne- incognita on nursery bed. Flowering, number of leaf, plant height and fruit yield were
significantly reduced (p<0.05) in comparison with the treated experiment on the plots. About a 100% loss occurred on
number of leaf, fruit and fruit weight; unhealthy plants root galling also increased. The tomato seedlings were then
transplanted on m2 plots and ethanol extracts from four (4) plant species: Azadirachta indica leaf, capsicum annum fruit,
Zingiber officinale rhizome and Parkia biglobosa seed were applied and tested for nematicidal activity at four levels of 250,
500, 750, 1000 ppm concentrations, applying 5ml per tomato stand. Each treatment was replicated four times (4) in
randomised complete block design. At 1,000 ppm concentrations the extracts applied completely (100%) prevented rootknot
juveniles with regular and corresponding increase in the tomato plants over the control treatments. The paper also gives
the recent development in irrigation and processing technology in Sokoto. Therefore government should encourage the local
farmers to adopt new innovations of science and technology.
Keywords: Ethanol extracts, Meloidogyne incognita, Roma king, and Root-knot.