https://hspublishing.org/GRES/issue/feed Global Research in Environment and Sustainability 2024-05-27T00:00:00+01:00 Faruk Soban office@headstartnetwork.org Open Journal Systems <p><strong><em>Global Research in Environment and Sustainability (GRES)</em></strong> is an open access and peer-reviewed international journal. Environmental sustainability has become an increasingly important topic in today's world as the impacts of climate change and human activities on the planet continue to grow. Research in this area focuses on identifying solutions to mitigate these impacts and promote sustainable practices. From renewable energy and waste reduction to conservation and ecosystem management, environmental sustainability research is critical for the preservation of the natural world and the well-being of future generations. This research is multidisciplinary, involving scientists, policymakers, and the general public in the pursuit of a sustainable future.</p> https://hspublishing.org/GRES/article/view/452 Hydro-Priming Effects as A Seed Pretreatment Technique on Early Growth, Development and Yield of Amaranthus thunbergii Accessions 2024-04-26T12:59:06+01:00 Onkgolotse G. Moatshe-Mashiqa ogmoatshe@gov.bw Patrick K. Mashiqa ogmoatshe@gov.bw Motlalepula Pholo-Tait ogmoatshe@gov.bw Nametso Nkoane ogmoatshe@gov.bw <p>Two field experiment were carried out in Sebele (24<sup>o</sup>33’S, 25<sup>o</sup>54’E, 994 m above sea level) during summer 2021/2022. The treatments were two amaranthus accessions collected from South-Eastern region of Botswana as factor A while hydropriming (soaking in preheated water) for duration 0-control (no priming), 30 seconds, 60 seconds, and 90 seconds allocated as factor B. Hydro priming duration and accessions significantly (P &lt; 0.05) influenced growth, phenological characteristics and development of amaranthus in both seasons of study. Amaranthus seed accessions and hydropriming significantly (P &lt; 0.05) influenced the timing/duration of phenological stages. The time amaranthus seeds took from sowing to seedling emergence hastened with an increase in priming duration. This resulted with an average of&nbsp; 3-6.5 days to emerge from 90 seconds or control as the minimum or maximum days taken to reach emergence, respectively. However, when seeds were exposed to hydropriming for the longest time, days from sowing to branching, flowering and physiological maturity were significantly (P &lt; 0.05) delayed. This means 90 seconds duration significantly (P &lt; 0.05) resulted with the longest number of days from sowing to branching, flowering and physiological maturity whereas non primed seeds took the shortest time to mature.&nbsp; There were many branches, largest leaf size, highest leaf fresh weight and seed yield when amaranthus seeds were primed for 90 seconds compared to control. In general, hydropriming for 90 seconds duration outperformed all other treatments producing total leaf fresh weight or seed yield of 10306 kgha<sup>-1 </sup>or 3763 kgha<sup>-1</sup>, respectively. Comparing accessions, the highest emergence percentage, growth and crop yield significantly (P &lt; 0.05) resulted from accession 2 than 1. In conclusion, hydropriming had a significant role in improving phenology, early growth and yield of amaranthus accessions.</p> 2024-05-18T00:00:00+01:00 Copyright (c) 2024 Onkgolotse G. Moatshe-Mashiqa, Patrick K. Mashiqa, Motlalepula Pholo-Tait, Nametso Nkoane https://hspublishing.org/GRES/article/view/458 Relationship between Micro-Climatic Parameters and Atmospheric Pollutants at Selected Road Junctions in Port Harcourt. Niger Delta, Nigeria 2024-04-30T17:52:19+01:00 Rosemary N. Aroh aroloyen@yahoo.com Aroloye O. Numbere aroloyen@yahoo.com Udi O. Emoyoma aroloyen@yahoo.com <p>The increase in vehicular activities has led to the proliferation of atmospheric pollutants in industrialized cities worldwide. This study postulates that there will be a relationship between micro-climatic parameters and atmospheric pollutants. Samples were collected from five locations selected within Port Harcourt, namely Choba Junction, Rumuokoro Junction, Garrison Junction, Mile 3/UST roundabout, and Lagos Bus Stop. The measured parameters are air temperature, relative humidity, wind speed, nitrogen dioxide (NO<sub>2</sub>), sulfur dioxide (SO<sub>2</sub>), carbon monoxide (CO), and suspended particulate matter (SPM). The results showed that the mean concentration of carbon monoxide (CO) ranged between 13 ppm to 27.2 ppm. Sulfur dioxide and nitrogen concentrations were below the detection limit. Choba has the highest SO<sub>2</sub> (0.6 ppm) and NO<sub>2</sub> (0.02 ppm) concentrations. Mornings had the highest concentration of pollutants compared to evenings. Similarly, the mean concentration of PM<sub>2.5</sub> ranged between 71.4µg/m<sup>&nbsp;&nbsp; </sup>to 162.6 6µg/m3. For the micro-climatic, the mean temperature ranged from 25.6°C to 33.7°C, mean relative humidity ranged from 50.6% to 87.3%, and wind speed ranged from 0.8m/s to 1.4m/s. Higher micro-climatic values were also recorded at Choba. The relationship between atmospheric pollutants and particulate matter with microclimatic parameters was not significant (P&gt;0.05). But in contrast, there was a relationship between temperature and relative humidity with the concentrations of PM<sub>2.5</sub> and PM<sub>10 </sub>(P&lt;0.05). The result implies that locations with high micro-climatic parameters have the possibility of having higher concentrations of atmospheric pollutants. Thus, constant monitoring of the emission level of vehicles is essential.</p> 2024-05-09T00:00:00+01:00 Copyright (c) 2024 Rosemary N. Aroh, Aroloye O. Numbere, Udi O. Emoyoma