Browsing by Author "Arogundade, Olawale"
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Item Assessment of growth, yield and nutritive quality of two okra (Abelmoschus esculentus) varieties infected with Okra mosaic virus(University of Abuja, 2022) Aliyu, Taiye Hussein; Arogundade, Olawale; Salami, K.O.; Tete, B.A.Item Detection of Viruses Infecting Lettuce (Lactuca sativa L.) in the Derived Savanna of Nigeria and Influence on Proximate Composition(Journal of Food and Agriculture, 2022) Aliyu, Taiye hussein; Arogundade, Olawale; Essien, Emmanuel; Balogun, Olusegun Samuel; Adeoti, Omotayo MorenikeA survey was accomplished in the derived savanna of Oyo State, Nigeria during 2019/2020 cropping season to evaluate the incidence and severity of viruses infecting Lettuce. Laboratory experiments were performed serologically to identify the infecting viruses and to verify possible variations in the proximate composition. A total of 100 symptomatic and asymp-tomatic lettuce leaves were collected from different fields across the study area. Fifty of the leaves which were representative of the locations were then subjected to Antigen Coat Plate (ACP) and Double Antigen Sandwich Enzyme Linked Immunosorbent Assay (DAS ELISA) using specific polyclonal antisera against Cucumber mosaic virus (CMV), broad spectrum potyvirus, Lettuce mosaic virus (LMV) and Lettuce virus X (LeVX). The 50 other samples were subjected to proximate analysis. The incidence of virus infection varied across survey locations from 7.14% to 39.22% with a severity range from 10.33% to 41.32%. ELISA indicated single or multiple virus infection of CMV, LMV and/or Potyvirus while LeVX was not detected in the study. Proximate analysis indicated that the chlorophyll content of infected plants (0.6) was significantly lower than healthy plants (1.4). The total carbohydrate content was also significantly higher in healthy plants (13.8) compared to infected plants (7.7). This study is the first report confirming the infection of Cucumber mosaic virus, Lettuce mosaic virus and Potyvirus in lettuce in the selected agroecological zone. To enhance growth and quality of nutrients derived from lettuce, plant-virus management strategies should be adopted coupled with periodic virus surveys to detect newly emerging virus strains.Item FARMERS’ AWARENESS OF VIRUS SYMPTOMS AND ASSOCIATED DAMAGE ON THREE FRUIT VEGETABLE CROPS GROWN IN TWO STATES OF SOUTHWEST NIGERIA(Nigerian Society for Plant Protection., 2021) Arogundade, Olawale; Amao, I; Aliyu, Taiye HusseinThe study assessed farmers’ awareness of viral disease symptoms and associated levels of severity on Pepper (Capsicum spp.), Tomato (Solanum lycopersicum L.) and Okra (Abelmoschus esculentus L. Moench). Structured questionnaire was used to collect data from 94 farmers in Oyo and Ogun states in southwestern Nigeria. Responses were analyzed using descriptive statistics. Of the respondents, the average age of married male farmers was 46 years (46.48±11.43) and 43.6% had secondary education. Pepper (cv. Rodo) was cultivated by 42.5% of respondents followed by okra (landrace) (37.2%), and tomato (cv. Beske) (29.4%). For pepper and tomato, most farmers observed leaf curl symptoms (73.4 and 72.3%, respectively) while leaf deformation symptom (36.2%) was observed in okra. Farmers observed damage such as reduction in yield (74.5%); reduction in number of leaves and fruit size (70.2%) and reduction in fruit size and yield (41.5%) for pepper, tomato and okra, respectively. Damage caused on these vegetables due to viral infection has led to reduction in family income (94.8%). The farmers made attempts to control the symptoms observed by spraying with chemicals; only 1% dispose the infected plants by burying. This study concludes that the farmers recognized virus disease symptoms on the selected vegetables, admitted that infection leads to yield losses and attempted some control measures, though inappropriate. Thus, farmers should be sensitized on the proper measures for controlling viral infections on the selected vegetable crops.