Browsing by Author "Izuogu, Nkechi Betsy"

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    COMPARATIVE EFFECTS OF NEEM EXTRACTS AND CARBOFURAN ON THE PERFORMANCE OF OKRA (Abelmoschus esculentus) INFESTED BY ROOT KNOT NEMATODE IN KOGI STATE, NIGERIA
    (Federal University Oye-Ekiti, 2020) Hinmikaiye, A.S.; Izuogu, Nkechi Betsy; Babalola, T.S.
    The nematicidal effect of aqueous Azadirachtha indica (neem) leaf extract and a standard synthetic nematicide, carbofuran were evaluated for their effect on pathogenicity of Meloidogyne spp on growth and yield of okra. The experiment was carried out during the 2019/2020 cropping season. There were seven treatments and control replicated three times in a Randomized Complete Block Design to give a total of twenty-four plots. Data collected on growth and yield parameter were subjected to analysis of variance (ANOVA) and means were separated using Duncan Multiple Range Test (DMRT) test at 5% level of probability. The results showed the effect of T7 (carbofuran) on okra to be significantly better than all other treatments tested.. Also at harvest, galling was significantly lower in carbofuran treated plants compared to the neem treated plants. The control plants were most galled with poor yield and had stunted growth. The moderate concentrations of both neem (100 and 200 ml aqueous, 100 and 200 ml ethanol, 25 and 50 g powdered neem and 0.26 g of carbofuran performed significantly (p<0.05) better than control plants in suppressing the effects of root-knot nematode on yield and growth of okra. These suggest that the neem extract have nematicidal property and would be effective in the management of root-knot nematodes. Treatment T5 (Powdered neem 25 g) had significantly better plant height and was therefore recommended to farmers in the study area, pending further studies.
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    Comparative profitability of managing Meloidogyne incognita on the vegetative growth of cucumber (Cucumis sativus L.) using Root Grow (Mycorrhizal Fungi) and Broiler Droppings.
    (Federal University of Dutsin-Ma, Katsina, 2021) Bello, O.E.; Izuogu, Nkechi Betsy; Bello, O.M.
    Screen-house and field experiments were carried out to evaluate and compare the activities of Root grow (mycorrhiza fungi) and broiler droppings (singly and both) on root-knot nematode, Meloidogyne incognita infecting Cucumber, Cucumis sativus (L). The experiment was designed as a 2 by 5 factorial fitted into a Complete Randomised Design (CRD) and Randomized Complete Block Design (RCBD) for screen house and field experiments respectively. Two levels each of the two treatments were evaluated both in the screen house and on the field. Root-grow (mycorrhiza fungi) was evaluated at the rate of 0.5 g and 1.0 g while broiler droppings were evaluated at the rate of 50 g and 100 g. The effects of treatments on vegetative growth as well as nematode damage and population were determined both in the screen house and on the field. All data collected were subjected to Analysis of Variance (ANOVA) and where treatment means were significant, multiple comparisons of treatments were done using Tukey’s honesty significant difference at a 5 % level of significance. Broiler droppings at 100 g and 50 g were more effective in controlling nematode than the two levels of Root grow (mycorrhiza fungi). Plant growth was best with broiler droppings at 100 g followed by broiler droppings at 50 g. Nematode population was reduced in all plant treated and were less galled compared with the control. The results showed that broiler droppings and mycorrhiza fungi can be used in controlling root-knot nematode Meloidogyne incognita on cucumber
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    Effectiveness of Ocimum gratissimum, Jatropha curcas and Chromolaena odorata powder in the Management of Scutellonema bradys infecting five Yam varieties in Kogi State Nigeria.
    (COLLEGE OF AGRICULTURAL SCIENCES, JOSEPH AYO BABALOLA UNIVERSITY, IKEJI-ARAKEJI, 2020) Hinmikaiye, S.A.; Izuogu, Nkechi Betsy; Adebayo, R.A
    Scutellonema bradys, a phyto-parasitic nematode is reputed for its symptomatic infections in many varieties of yam. Colossal losses have been attributed to its infection on yam where the land is endemic with S. bradys. Studies were conducted on the effects of Ocimum gratissimum, Jatropha curcas and Chromolaena odorata in the management of Scutellonema bradys infecting five yam varieties in the study area in 2014 and 2015 cropping season. The trials involved three organic material treatments (powders of Ocimum gratissimum, Jatropha curcas, Chromolaena odorata) and the control was factorially combined with the five yam varieties and inoculation of Scutellonema bradys. The cultivars used as test crops were Okunmodo, Kerege and Sebukere as (white yam), Ewura (Water yam) and Olo (Yellow yam). The yam nematode, Scutellonema bradys caused lateral lesions, necrosis and dry rot of yam on the white yam, water yam and yellow yam. The results of this research showed that white yam is susceptible to S. bradys, while water yam and yellow yam cultivars proved to be resistant to S. bradys. The findings indicated that S. bradys in screenhouse and field experiments significantly affected yam growth and yield. All the plant materials; powdered leaf of Ocimum gratissimum, Jatropha curcas, and Chromolaena odorata had significant bio- pesticidal effects on S. bradys as they caused reduction in population both in the screenhouse and field experiments compared to the control. It is therefore advised that yam growers should not plant white yam cultivars on areas of land that are endemic to S. bradys.