Ayodele Adesina Adegbite

Institute of Agricultural Research & Training | IART · Grain Legumes Improvement Programme

Cowpea (Vigna unguiculata (L.) Walp) is an important protein-rich food consumed by rural and urban communities of Africa and other countries. However, cowpea is vulnerable to attack by pests and diseases, especially, insect-transmitted viruses causing yield losses. The study investigated the susceptibility of two cowpea varieties and their associat...

Twenty cassava cultivars were screened in micro-plot experiments in the green house of Institute of Agricultural Research and Training, Obafemi Awolowo University, Moor Plantation, Ibadan for root-knot nematode resistance. Four weeks after planting, each plant was inoculated with 5000 eggs of Meloidogyne incognita. There were three replications per...

Cowpea is an important food legume utilized by millions of people in the sub-Saharan Africa and other countries. However, its production is hindered by biotic and abiotic factors of which virus is one of them. The study therefore, investigated the response of cowpea genotypes to two aphid-borne viruses during 2013 and 2014 growing seasons. Genotype...

In an effort to explore a less toxic and a more environmentally compatible, cheaper and more easily available approach to the control of parasitic nematodes the leaves of three plants (Chromolaena odorata, Thevetia peruviana and Ocimum viride) were evaluated for their potential to protect Celosia argentea from damage by nematodes. A randomized comp...

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Studies on the effectiveness of some indigenous plant extracts as inhibitors of egg-hatch in root-knot nematode (Meloidogyne incognita race 2) were carried out in the Plant Protection Laboratory of Institute of Agricultural Research & Training, Obafemi Awolowo University, Moor Plantation, Ibadan. Azadirachta indica (Neem); Chromolaena odorata (Siam...

Field trials were conducted in 2008 and 2009 to investigate the reaction of 13 varieties of maize (Zea mays L.) to natural infestation of root knot nematode, Meloidogyne incognita at the Institute of Agricultural Research and Training, Obafemi Awolowo University, Moor Plantation, Ibadan, Nigeria under field conditions. Used maize varieties were ART...

The root knot nematodes are included within the genus Meloidogyne Goldi, 1892 and belong to a relatively small but important polyphagous group of highly adapted obligate plant pathogens. Typically, they are distributed worldwide and parasitize nearly every species of higher plant. Due to their endoparasitic way of living and feeding, root knot nema...

Full terms and conditions of use: http://www.informaworld.com/terms-and-conditions-of-access.pdf This article may be used for research, teaching and private study purposes. Any substantial or systematic reproduction, re-distribution, re-selling, loan or sub-licensing, systematic supply or distribution in any form to anyone is expressly forbidden. T...

Field trials were conducted in 2003 and 2004 at the Institute of Agricultural Research and Training, Ibadan (7°38'N 3° 84'E), Nigeria to determine the influence of some agronomic practices on yield and profitability in kenaf bast fibre production. Three kenaf varieties, Cuba 108, Ifeken 400 and Ibadan local, were subjected to three agronomic practi...

Seven under-utilized grain legumes foliages and soybean foliage were evaluated for their nutrient composition, anti-nutrient contents, organic matter digestibility, short chain fatty acid and metabolizable energy levels in order to ascertain their relevance in livestock nutrition. In-vitro gas productions of the ground samples of the legumes foliag...

Cowpea, which has now become an important protein source for the teeming populace of Nigerians especially those living in the humid agro-ecological zones of South-western Nigeria, is severely attacked by diseases. The causal agents of these diseases find the environment more conducive for survival and hence induce disease conditions in the host pla...

Survey of Plant-Parasitic Nematodes Associated with Yams in Ogun and Osun States of Nigeria A survey was conducted to determine the types, frequency and population of plant parasitic nematodes associated with the soils and roots of Yam ( Dioscorea species) in all the Local Government Areas of Ogun and Osun States of Nigeria using random sampling so...

Field studies were conducted in 2006 and 2007 to investigate the reaction of 10 varieties of kenaf (Hibiscus cannabinus) to natural infestation of Meloidogyne incognita. Ten weeks after planting, 10 randomly selected plants per variety were assessed for root galling. Data were also collected on plant height, stem girth, days to maturity, number of...

Root-knot nematode Meloidogyne incognita (Kofoid & White) Chitwood is an economically important pathogen of many agricultural crops, and the frequency of occurrence, abundance and importance of this nematode in resource-poor agricultural production systems make control neces-sary. Field studies were conducted in 2004 and 2005 to determine yield los...

In spite of the economic potential of edible soybean, the crop is attacked by pests and diseases, including the root-knot nematode, Meloidogyne incognita, which is the most troublesome plant-parasitic nematode in the tropics. Field studies were conducted in 2004 and 2005 to assess the reaction of 34 varieties of soybean for resistance to natural in...

Carbofuran 3G was applied at the rates of 0, 100, 200, and 300 kg/ha to three newly released hybrid yam (TDr 89/02665, TDr 89/02565 and TDr 89/02677) varieties across rainforest and derived savanna ecologies in southwestern Nigeria. The results showed that influence of root-knot nematode (Meloidogyne incognita race 2) on tuber yield was significant...

The Study on economic impact assessment for the production of improved soybean varieties in Nigeria was carried out in Nigeria using the agronomic data on yield of the nationally coordinated soybean research from two major zones namely the southwest and the middle belt. The study assesses the economic returns due to improved soybean varieties. Prim...

Comparative effects of Apron plus 50DS (a systemic fungicide) and soil amendment (poultry droppings) on growth yield and food components of soybean (TGX 1485-1D) were studied. Soybean seeds treated with recommended dose of Apron plus 50DS had lower percentage germination when compared to the other treatments while the untreated seeds (control) had...

Control of plant-parasitic nematodes essentially involves use of synthetic nematicides. However, apart from cost, increased concern for the environment has necessitated a reduction in the amount of nematicides used for control. Additionally, there has been an increase in the search for other efficient; ecologically sound and safe control methods. E...

A survey was conducted to determine the types, frequency and population of plant parasitic nematodes associated with the soils and roots of Yam (Dioscorea spp.) in all Local Government Areas of Edo, Ekiti and Oyo States of Nigeria using random sampling for soil and root and using pie pan modification of Baerman funnel for plant parasitic nematode e...

Insects, weeds, vertebrate pests, nematodes, and diseases are major constraints to the production of cowpea. Conventional nematicides are the most effective way of controlling nematode problems in soils where cowpea is grown. However, due to high cost of nematicides, application hazards and fear of environmental contamination, alternatives such as...

The use of stakes in yam production poses environmental hazards due to its effect on rapid deforestation of the forest ecology. The practice is cumbersome, labour intensive and it is a major cost input that makes yam production expensive and less profitable. To discourage this practice, fourteen hybrid lines and four local cultivars of white Guinea...

Field studies were conducted in 2002 and 2003 to assess the reaction of 15 varieties of cowpea for resistance to a natural infestation of Meloidogyne incognita race 2. Ten weeks after planting; ten randomly selected plants per treatment were examined for root-galls and nodules. Data were also collected on plant height, days to 50% flowering, days t...

A study was conducted in three agroecological zones of south-western Nigeria to evaluate the effect of siam weed (Chromolaena odorata) and mucuna (Mucuna utilis) cover/fallow crops on plant-parasitic nematode population. The natural bush regrowth was used as control. Plant-parasitic nematodes were identified and counted during the fallow periods. E...

The role of weeds, soil and plant debris in the epidemiology of foliar diseases of yam was investigated at Ibadan Western Nigeria in the lowland humid tropics. Sclerotium rolfsii , Colletotrichum gloeosporioides , Colletotrichum graminicola , Pestalotia sp., Curvularia lunata , Curvularia eragrostidis , Drechslera sp. and Rhizoctonia solani , fungi...

The etiology of vascular wilt of Roselle ( Hibiscus sabdariffa var. sabdariffa L.) was investigated at Ibadan, in the humid forest region of south-western Nigeria. Out of 250 Roselle plants examined, 26% exhibited symptoms of wilt. The vascular wilting of Roselle was associated with Fusarium oxysporum Schlecht. Emend. Snyd and Hans. Plant debris wa...

Field studies were conducted in 2003 and 2004 to investigate the reaction of 10 varieties of kenaf to natural infestation of Meloidogyne incognita. Ten weeks after planting, ten randomly selected plants per variety were assessed for root galling. Plants were carefully uprooted soil adhering to roots was washed off under a gentle stream of tap water...

Chemical control of plant-parasitic nematodes, essentially, involves the use of synthetic nematicides. However, apart from its very high cost, increased concern for the environment has necessitated a reduction in the amount of nematicide used for nematode control. Additionally, there has been an increase in the intensity of search for other efficie...

Twelve crops commonly grown in association with yam in South-Western Nigeria were evaluated for resistance to root-knot nematode Meloidogyne incognita (Kofoid and White 1919) Chitwood 1949, race 2 infection using the quantitative modification by Sasser et al. (1984) of host suitability designations of Canto-Saenz (1983) for plants infected with roo...

The etiology of fruit anthracnose in hot pepper (Capsicum frutescens) was investigated at Ibadan, Osogbo, and Ikenne in the lowland forest zone of western Nigeria. Collectotrichum capsici (Synd) Butler & Bisby was found associated with the fruit anthracnose of hot pepper in all locations. Out of 300 plants examined in all the locations, over 70 per...

This review presents different diseases associated with yam and the management strategies employed in combating its menace in Nigeria. The field and storage diseases are presented, anthracnose is regarded as the most widely spread of all the field diseases, while yam mosaic virus disease is considered to cause the most severe losses in yams. Dry ro...

Four hybrid yam varieties (TDr 89/01438, TDr 89/02665, TDr 95/01924 and TDr 89/01213) and three local cultivars (Danacha, Obiaturugo and 93-2) were evaluated for tuber yield, leaf mosaic virus and nematodes infection at Orin-Ekiti for three years, 1999 to 2001. Varietal differences and relationship between tuber yield, severity of leaf mosaic virus...

In this study, ten newly developed early maturing soybean varieties were considered. Among all the agronomic parameters of a leguminous crop, eight were considered and they are the following: days to flowering, days to maturity, height at harvest, height at lowest pod, number of plant harvested, dry fodder weight, 300 seed weight and nodulation cou...

This review presents different diseases associated with yam and the management strategies employed in combating its menace in Nigeria. The field and storage diseases are presented, anthracnose is regarded as the most widely spread of all the field diseases, while yam mosaic virus disease is considered to cause the most severe losses in yams. Dry ro...