Ghana Journal of Science, Technology and Development http://gjstd.org/index.php/GJSTD Ghana Journal of Science, Technology and Development (GJSTD) is an online double blind peer review journal which publishes scholarly articles in all disciplines of science, technology and development and will normally be published every quarter of the year en-US <p style="text-align: justify;">Submission of a manuscript implies: that the work described has not been published before (except in the form of an abstract or as part of a published lecture, review, or thesis); that it is not under consideration for publication elsewhere; that its publication has been approved by all co-authors, if any, as well as – tacitly or explicitly – by the responsible authorities at the institution where the work was carried out. Transfer.</p> <p style="text-align: justify;">As a publisher of the journal, we reserve full copyright ownership of the journal and all submissions published in it.</p> tansah@uds.edu.gh (Editor in Chief) smintah@uds.edu.gh (Mr. Stephen Mintah) Tue, 07 May 2019 15:05:02 +0000 OJS 3.1.1.4 http://blogs.law.harvard.edu/tech/rss 60 Selection in the M2 Generation of Soybeans (Glycine Max (L.) Merill) irradiated with Cobalt – 60 Gamma Irradiation in the Guinea Savannah Agroecology of Ghana http://gjstd.org/index.php/GJSTD/article/view/127 <p><em>Field studies were conducted at the research fields of the University for Development Studies, Ghana from July to November, 2014 and June to October 2015. The studies were aimed at investigating the effect of gamma irradiation on growth and grain yield of soybean. Seeds of soybean variety Jenguma were subjected to gamma irradiation at 150, 200, 250 and 300 Gy from the 60Co source at the Biotechnology and Nuclear Agricultural Research Institute of the Ghana Atomic Energy Commission in Accra, Ghana. The irradiated seeds and some unirradiated control (0 Gy) were planted during the 2014 cropping season in a randomized complete block design with three replications. At harvest, all M<sub>1</sub> seeds for respective gamma ray doses were harvested and composited, and advanced to the M<sub>2</sub> generation during the cropping season of 2015.&nbsp; In M<sub>1</sub>, gamma irradiation significantly (P &lt; 0.05) affected seedling emergence. There was significant reduction in survival of seedlings especially from the 150 Gy. Seedling heights of the irradiated species were significantly (P &lt; 0.05) reduced. Number of days to 50% flowering was also significantly (P &lt; 0.05) affected. &nbsp;In M<sub>2</sub>, more desired traits were found from plants irradiated with the 200 Gy and 250 Gy doses, with only few in the 150 Gy and 300 Gy treated plants. There was a potential for total grain yield improvement. Numbers of pods per plant and seed weight were the key parameters found to influence grain yield. Maturity period was also found to be shorter in the selected plants. The shattering resistance of plants in the 200 Gy and 250 Gy was found to be a potential improvement over the parental variety ‘Jenguma’ which was originally bred for that purpose. Selected plants would be advanced into M<sub>3</sub> generation for further studies and results will be published</em></p> Isaac Kwahene ADDAI ##submission.copyrightStatement## http://gjstd.org/index.php/GJSTD/article/view/127 Tue, 07 May 2019 14:52:32 +0000 Planting Dates and Nutrition Management Regimes Impact Positively on Bulb Size, Quality and Yield of Rain-fed Onion http://gjstd.org/index.php/GJSTD/article/view/129 <p><em>&nbsp;Bulb size, appropriate time of planting and sufficient growth nutrients may determine the quality of seeds and productivity of onion. Studies were conducted during the cropping seasons of year 2015 and 2016 to assess the effects of planting date and nutrients management regimes on bulb size, quality and yield of rain-fed onion using seeds of variety Prema as planting material. Three levels of transplanting dates namely early transplanting (N1)), transplanting of seedlings two weeks after early transplanting (N2), and transplanting of seedlings four weeks after early transplanting (N3) were factorially combined with the following six fertilizer application regimes: F1 (no fertilizer application), F2 (application of 375 kg/ha of NPK 23:10:10), F3 (application of 10 t/ha fertisoil compost), F4 (application of 187.5 kg/ha of NPK 23:10:10 plus 5 t/ha of fertisoil compost), F5 (application of 125 kg/ha of NPK 23:10:10&nbsp; plus 6.6 t/ha of fertisoil compost) and F6 (application of 250 kg/ha of NPK 23:10:10 plus 3.3 t/ha of fertisoil compost). Seedlings from the above treatment combinations were planted using RCBD in three onion growing communities in the Northern Region of Ghana. At harvest, bulbs were sorted into three groups (large, medium and small bulbs). Results from the studies indicated that in each group of bulb size, N1 x F4 plants produced the highest bulb fresh weight and bulb diameter. Plants from these regimes also produced the highest bulb quality and bulb yield. Farmers should nurse onion seeds early, latest by first week of June in the rainy season, so as to transplant seedlings by first week of July and apply 187.5 kg/ha of 23:10:10 NPK plus 5 t/ha fertisoil compost for improved bulb sizes in the study area.</em></p> Isaac Kwahene ADDAI, Joseph X. KUGBE ##submission.copyrightStatement## http://gjstd.org/index.php/GJSTD/article/view/129 Tue, 07 May 2019 14:49:58 +0000 Farmers’ Perceptions of Information and Communication Technology (ICT) Use in Extension Service Delivery in Northern Region, Ghana http://gjstd.org/index.php/GJSTD/article/view/126 <p><em>Extension methodologies for communicating technologies to farmers have evolved over the past 200 years from so-called traditional methodologies to more advanced and technology-based methodologies that enable extension staff to reach many people within the shortest possible time in a more effective and efficient way. Though traditional methods are still relevant and effective, current trends require the use of more innovative and cost-effective methodologies.&nbsp; This paper examined the perceptions of farmers on the use of ICTs in Extension Service delivery in the Northern Region of Ghana. Ninety farmers were randomly sampled from 6 communities in 6 districts in the region. Data was collected using semi-structured questionnaire. A 5-point Likert scale was used to determine farmers’ perceived effects of ICT on extension delivery. Data were analysed using means, standard deviations, t-test, frequencies and percentages. The most widely used ICTs by farmers are radio, mobile phone and television. Farmers perceive the use of mobile phone to have resulted in timely delivery of information, increased interaction among farmers and between farmers and AEAs and effective use of time and energy by AEAs. The use of radio has improved adoption of technologies and enhanced farmers’ awareness of innovations. It is concluded mobile phone, radio and television are used widely in the region and have very positive effects on extension service delivery.&nbsp;&nbsp; </em></p> Francis K. OBENG, Salifu GUMAH, Stephen Mintah ##submission.copyrightStatement## http://creativecommons.org/licenses/by-nc-sa/4.0 http://gjstd.org/index.php/GJSTD/article/view/126 Tue, 07 May 2019 14:43:05 +0000