Browsing by Author "Fadina, 0.0"

Now showing 1 - 3 of 3

Organic agriculture and climate change
(2020) Fayinminnu, O.O.; Fadina, 0.0; Ogundola, A.F.
Survey of Downy Mildew Disease of Maize (Peronoscleropora Sorghi) For Appropriate Control Strategies
(2000) Fadina, 0.0; Adeoti, B. O.
The study sets out to find the various factors militating against the effective control of the downy mildew disease of maize in some local government areas of Oyo and Ogun States (Nigeria). Lack of adequate communication between the farmers and researchers and the unavailability of downy mildew resistant seeds at the appropriate time and at affordable prices are some of the factors militating against the effective control of the downy mildew disease of maize. The testing of relationships with chi-square between farmers educational levels and incidence of disease shows that there is no relationship between the two i.e. X2 cal > X2 tab at 95% significant level. The chi-square test also indicated that there is still the occurrence of the disease irrespective of whether farmers have access to extension agents or not because X2 cal = 7.98 while X2 tab = 5.99 at 95% significant level. The adoption of an integrated pest management approach, close linkage between the farmers and researchers and the provision of technical advice by extension agents were suggested
Toxicity of gamma-benzene hydrochloride (y-bhc) to oreochromis niloticus (pisces: cichlidae)
(2000) Fadina, 0.0; Taiwo, V.O; Ogunsunmi, A O; Agbede, S A
The toxicity of gamma-benzene hydrochloride (y-BHC) to Oreochromis mlolicus was evaluated in a static bioassay system A various concentrations and ponods of exposure, changes in behavioural responses and ortahbes were recorded in the test fish, while no such responses or any molality was recorded in the control fish throughout the period of the experiment increasing concentration and periods of exposure to y-BHC caused uncoordinated movements, erratic swimming behavior and extreme dullness prior to death of the lest fish. There are progressive heamoconcentration, hyperproteinaemia, hypernatraemia, decreased plasma cabon concentration, hypoglycaemia and increased plasma levels of ALP, AST and ALT will increasing concentration of y- BHC and period of exposure of test fish Death of test fish pccued cathest in the highest concentration of y- BHC(200ppm) and with increasing ponods of exposure postmortem lesions observed in the test fish include haemorrhagic and necrotic enlentis and myocarditis, hepalocellular degeneration and necrosim and non-suppurative meningoencephalitis it is concluded that y-BHC is very toxic to O.nilolicus, causing severed ncule denydration,haemoconcentration, organ damage and death. Hence, it is suggested that the use of y-BHC to properly controlled and regulated by appropriate legislation in order to prevent its bioaccumulation in the environment and immnent disastrous effect on the ecosystem