Browsing by Author "Adebayo, R.A"

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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.