Asian Journal of Advances in Agricultural Research 2019-11-12T07:44:10+00:00 Asian Journal of Advances in Agricultural Research Open Journal Systems <p style="text-align: justify;"><strong>Asian Journal of Advances in Agricultural Research (ISSN: 2456-8864)</strong> aims to publish high quality papers (<a href="/index.php/AJAAR/general-guideline-for-authors">Click here for Types of paper</a>) in the field of agricultural science. This journal facilitates the research and wishes to publish papers as long as they are technically correct, scientifically motivated. The journal also encourages the submission of useful reports of negative results. This is a quality controlled, OPEN peer reviewed, open access INTERNATIONAL journal.</p> Development of an Automated Solar Powered Hot-air Supplemented Dryer 2019-11-12T07:44:10+00:00 O. Taiwo Aduewa S. Ajiboye Oyerinde P. Ayoola Olalusi <p>The world is facing two major challenges: one is to meet the exponential growing demand for energy particularly in developing and underdeveloped countries and other is to deal with global, regional and local environmental impacts resulting from supply and use of conventional energy. The cost-effective technology for solar drying that can be easily adopted among the rural farmers of developing countries needs to be developed in areas where solar energy is abundantly available. As cheap as the solar energy could be, there are associated problems with the stability of the energy for different purposes due to instability of climatic conditions. For this research, a solar powered hot-air supplemented dryer (SPHSD) with a capacity of 20 kg of sliced yam was designed and developed. The SPHSD has three sections which are solar collector chamber, drying chamber and hot-air supplement chamber which is powered with two 150-watt solar panel and a 200 amps solar battery for continuous operation during bad weather. All data were logged digitally for accuracy and test was done using yam slices. Difference in drying time and stability in drying temperature was evaluated using SPHSD and indirect solar dryer. The result shows stability of temperature in the drying chamber when SPHSD was used while the drying temperature fluctuates throughout the indirect solar drying test period. Drying experiment was conducted for 481 minutes (between 0910 hrs to 1713 hrs) reducing the moisture content from 71.91%, 72.1% and 72.8% to 27.95%, 25.78% and 28.23% for MC<sub>1</sub>, MC<sub>2</sub> and MC<sub>3</sub>in wet basis respectively. Drying experiment was conducted for 832 minutes (between 0901 hrs to 2257 hrs) reducing the moisture content from initial moisture content levels of 72.66%, 71.48% and 71.48% to 13.47%, 12.53% and 12.54% for MC<sub>1</sub>, MC<sub>2</sub> and MC<sub>3</sub>in wet basis respectively.</p> 2019-11-01T00:00:00+00:00 ##submission.copyrightStatement## Market Integration and Price Movement of White and Brown Cowpea in Urban and Rural Markets of Gombe State, Nigeria: A Granger - Causality Approach 2019-11-12T07:44:09+00:00 U. K. Iroegbute I. Mohammed S. A. Jibril E. F. Panwal J. Moses <p>The study investigated the price movement and market integration of rural and urban price of brown and white cowpea in Gombe State, Nigeria. Monthly market prices (measured in Naira per kilogram) of brown and white cowpea in the rural and urban markets from January 2009 to December 2014. The data was obtained from the Gombe State Agricultural Development Programme (GSADP). Augmented Dickey Fuller test was used to detect for the presence of unit root in the series. The Granger causality test was used to test the direction of influence between prices.The descriptive statistics shows that the average price of rural brown cowpea was ₦109.88k, rural price of white was ₦95.71k, urban price of brown was ₦ 123.18k while urban price of white was ₦ 110. Unit root test indicated that the prices were stationary at level I(0) and first difference I(1). The Johansen co- integration analysis was used to test for the relationship between markets price and the results indicated that the rural and urban markets price were co- integrated. Pair-wise granger causality test indicated a bi-directional movement between the urban price of brown and urban price of white and a uni-directional movement between rural price of white cowpea and rural price of brown cowpea. There is need for the State government to establish market information centers and information centre of the GSADP should facilitate efficient communication and flow of information concerning prices of agricultural products using the mass media and social media.</p> 2019-11-04T00:00:00+00:00 ##submission.copyrightStatement## Design and Construction of Thermal Control Solar Heated Poultry House 2019-11-12T07:44:08+00:00 T. O. Tehinse F. R. Falayi T. O. Aduewa <p><strong>Introduction: </strong>Chickens in extensive and semi-intensive poultry production systems account for more than 75% of all poultry in the Southern Nigeria.</p> <p><strong>Aims: </strong>To design, construct and test a thermal control solar heated poultry house.</p> <p><strong>Methodology:</strong> Thermally controlled solar heated poultry house was designed and constructed in the Department of Agricultural and Environmental Engineering Research Farm, Federal University of Technology, Akure, Nigeria. The poultry house consists of seven sections/rooms of which five rooms were regulated into five different temperature levels while one of the last two serve as control experiment section and the other serve as the observation section. The poultry house was tested and evaluated using developed and calibrated data logger to determine the environmental condition in the thermally controlled animal house with respect to the ambient conditions. The results obtained from the pre-stock test were analyzed graphically using Microsoft excel software version 2016</p> <p><strong>Results:</strong> The dry bulb temperature in the poultry house is 28.91±0.02ºC, 31.75±0.14ºC, 34.93 ±0.06ºC, 37.92±0.07ºC, 40.95±0.06ºC and 26.47±1.72ºC for sections with preconditioned temperature of 29ºC, 32ºC, 35ºC, 38ºC 41ºC and control respectively, dry bulb temperature in the poultry house is 20.39±0.32ºC, 21.64±0.1ºC, 19.13±0.2ºC, 17.57±0.27ºC, 16.26±0.27ºC and 24.77 ±0.1ºC for sections with preconditioned temperature of 29ºC, 32ºC, 35ºC, 38ºC 41ºC and control respectively, the relative humidity in the poultry house is 44.69±2.37%, 41.9±1.21%, 38.43±0.38%, 33.8.</p> <p><strong>Conclusion:</strong> There was little or no temperature stability in the non-thermally controlled section of the poultry house, the temperature of the thermally controlled section of the poultry house was found in a close range with low deviation from the preset temperature in the sections.</p> 2019-11-11T00:00:00+00:00 ##submission.copyrightStatement##