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Volume 55, Issue 285, September 2019

About the Cover

An experiment was conducted to test the efficacy of eco-friendly and commercial antiviral products for the management of Zucchini yellow mosaic virus of zucchini squash at Plant Pathology Division Khumaltar, NARC. The experiment was conducted using a randomized complete block design with eight treatments namely Garlic clove extracts@ 50ml/lit, Victovirus@3ml/lit, Bougainvillea leaf extracts@200ml//lit, Viricon-H@3ml/lit, Cow–urine@200ml/lit, Anti-Vs@1gm/lit, Control and Yoghurt extracts@25ml/lit, each replicated for three times. Seedlings were transplanted with 100cm x 75cm spacing in 2.25m2 plots, accommodating 4 plants in each plot. The plots were inoculated with ZYMV before the application of treatments. The first spray of treatments was done after 15-20 days after transplanting followed by second, third and fourth and fifth sprayings at 7 days intervals. In control plots, water sprayed with equal volume instead of plant extracts. Observations were recorded weekly on first appearance of disease, disease incidence, disease severity and yield of fruit. Symptoms were recorded at regular interval in all the treatments on the basis of visual observations. The scale used for scoring diseases was 1-5. During 2016, highest severity was found in Control plot (55%) and least in cow urine treated plot (27%). In 2017, highest severity was found in Control plot (65%) and least in yoghurt treated plot (30%).

Table of Contents

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ENGINEERING

Chloride ingress-moisture content in pre-conditioned concrete cubes

Balakrishna MN, Robert Evans, Fouad Mohamad, Rahman MM

The chloride contamination will occur from the application of de-icing salts. It was confirmed that the application of de-icing salts caused a significant reduction in structural and serviceability reliabilities.

Discovery, 2019, 55(285), 453-461

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Influence of microorganisms on Aluu Crude Oil polluted soil environment in Niger Delta

Wecheonwu BC, Ukpaka PC, Puyate YT, Ehirim EO

Investigation was carried out to examine the effect of microorganisms on crude oil contamination of Aluu soil. The microorganisms studied were Total Heterotrophic Bacteria (THB) and Total Heterotrophic Fungi (THF).

Discovery, 2019, 55(285), 462-467

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ENVIRONMENTAL SCIENCE

Ineffective development control and flood susceptibility in Lokoja, Nigeria

Hafiz Shola Salami, Kolade Victor Otokiti

This paper examines the ineffectiveness of development control measures in addressing flood susceptibility in Lokoja, Nigeria. In carrying out this study, buildings susceptible to flooding were identified and factors influencing their vulnerability were determined.

Discovery, 2019, 55(285), 468-476

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Estimation of amount of biomass and carbon stock of cashew trees (Anacardium occidentale) in eastern corridor of Selous – Niassa transfrontier conservation area

Adili Y Zella, Mdee Norah V

Climate is changing and that the changes are largely due to increased levels of carbon emissions into the atmosphere caused by changes of land uses as a result of anthropogenic activities.

Discovery, 2019, 55(285), 477-483

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BIOLOGY

Efficacy testing of eco-friendly and commercial antiviral products for the management of Zucchini Yellow Mosaic Virus

Bimala Pant, Sharada Joshi, Chetana Manandhar, Shrinkhala Manandhar, Suraj Baidya

An experiment was conducted to test the efficacy of eco-friendly and commercial antiviral products for the management of Zucchini yellow mosaic virus of zucchini squash at Plant Pathology Division Khumaltar, NARC.

Discovery, 2019, 55(285), 484-489

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MEDICINE

Assessment of tuberculosis prevalence in Enugu State – A 5-year case study (2014 – 2018)

Wali YS, Effiong EC, Agujiobi IM

Tuberculosis (TB) remains a major global public health problem, as it is an infectious disease and a leading cause of death globally.

Discovery, 2019, 55(285), 490-495

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SUSTAINABILITY & CONSERVATION

Quantifying the impact of changing the initial data on biodiversity: Its extent and sustainable development scenario

Howard CC, Howard IC, Ekaka-a EN

The aim of this study is to quantify the impact of changing the initial data on biodiversity. We have used a numerical method to tackle this challenging scientific problem

Discovery, 2019, 55(285), 496-503

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Quantifying the impact of the co-existence steady-state solution on the type of stability using a numerical simulation approach

Howard CC, Howard IC, Ekaka-a EN

The interaction between species has been a long standing scientific research both for mathematical ecologists and environmental statisticians, biologists or scientists to mention a few

Discovery, 2019, 55(285), 504-508

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AGRICULTURE

Assessment the role of village extension worker in North Kordofan Rural Development Project (NKRDP), Sudan

Mekki Abdalla Adam, Sheikh Eldein Farah El Door, Mohammed AA Hamad

This study was conducted in North Kordofan State. The study covers both Um Ruwaba and Bara localities (NKRDP area).

Discovery, 2019, 55(285), 509-522

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