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150 results for “Variability”
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Research ArticleOpen accessEvery word in the titleSpatial Variability of Soil Inorganic N in a Mature Oil Palm Plantation in Sabah, MalaysiaAbdul Rahim Anuar, Kah Joh Goh, Tee Bee Heoh, Osumanu Haruna AhmedThe identification and understanding of soil factors influencing yield variability of oil palm enable their efficient management. Soil samples were therefore collected from a fertilizer response trial on oil palm to study the spatial inorganic N distribution and some selected soil chemical properties as affected by long-term N fertilizer applications. The experiment was conducted on mature oil palms grown on … …American Journal of Applied Sciences, Vol. 5, Issue 9 · 30 Sep 2008 · 7,686 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleMaize and Cashew Farming in the Face of Climate Change Variability in the Transitional Zone of Ghana: A Case Study of Nkoranza South MunicipalityVictor Adjei, Louis Kwantwi BoafoThe main aim of the study was to find out reasons behind the widespread conversion of maize farmlands to the production of cashew by most of the farmers in the transition zone of Ghana. The nature of the study necessitated the use of both primary and secondary data to achieve the objectives. Qualitative and quantitative approaches were used for the … …American Journal of Environmental Sciences, Vol. 15, Issue 3 · 31 May 2019 · 8,499 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Seasonal Temperature on the Genotypic Variability of Flowering Duration in Pearl Millet (Pennisetum glaucum) in NigerSani Daouda Ousmane, Mouhamadou Mounkaila Boureima, Maman Nassourou Lawali et al.Heat stress is a major contributor to crop losses worldwide. Millet [Pennisetum glaucum (L.) R. Br.] is a staple crop for inhabitants of arid and semi-arid regions of the world, due to its extraordinary adaptation to drought and high temperatures. Climate change points to an overall increase in temperature, the effect of which on crop growth and productivity remains to … …American Journal of Agricultural and Biological Sciences, Vol. 17, Issue 1 · 30 Nov 2022 · 6,125 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Variability of Indonesian Throughflow in Sumba Strait and Its Linkage to the Climate EventsAhmad Bayhaqi, Yueng-Djern Lenn, Dewi Surinati et al.As one of the Indonesian Throughflow (ITF) outflow passages, the Sumba Strait is a meeting point for the Pacific and the Indian Ocean water mass. In order to study the long-term variability of ITF flowing via Sumba Strait, this research uses observational data from the Ekspedisi WIdya Nusantara (EWIN) research cruise conducted in August 2016 to validate the altimetric geostrophic … …American Journal of Applied Sciences, Vol. 16, Issue 4 · 12 Jun 2019 · 8,824 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEvaluating the Effects of Climate Change and Variability on Water Resources: A Case Study of the Cheliff Basin in AlgeriaYamina Elmeddahi, Hacene Mahmoudi, Abderrahmane Issaadi et al.In aim to well understand of the association between climate change, variability and their impact on water resources availability, an analysis was conducted of the trends in rainfall and stream flows across the Cheliff basin in Algeria. Sen’s non-parametric estimator of slope was employed to estimate the extent of tendencies, whose statistical significance was measured by the Mann-Kendall (MK) and … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 4 · 12 May 2016 · 9,515 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffects of Land Cover on Streamflow Variability in a Small Iowa Watershed: Assessing Future VulnerabilitiesKeith Schilling, Matthew Streeter, Kasey Hutchinson et al.Agricultural expansion and urbanization, coupled with climate change represent major threats to the sustainability of river ecosystems and infrastructure. In this study, we evaluated how subbasins with different dominant land covers within the 27.5 km2 Clear Creek, IA watershed affect key hydrologic indicators. Hydrologic output from two stream gages and a calibrated Soil Water Assessment Tool (SWAT) model were used … …American Journal of Environmental Sciences, Vol. 11, Issue 4 · 6 Jul 2015 · 8,367 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleVariability and Genetic Structure in a Commercial Field of Tequila Plants, Agave tequilana Weber (Agavaceae)Martha Isabel Torres-Moran, Ana Paulina Velasco-Ramirez, Salvador Antonio Hurtado-de la Pena et al.Crops of the tequila plant (Agave tequilana) are produced mainly from offshoots of mother plants in established commercial fields. This propagation method is significant, as it is believed that it facilitates the spread of disease because of the crop’s low genetic variability and is also necessary because it is regulate the use of just that variety in tequila industry. Different … …American Journal of Agricultural and Biological Sciences, Vol. 8, Issue 1 · 22 Feb 2013 · 8,093 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleMorphological Variability and Races of Fusarium oxysporum f.sp. ciceris Associated with Chickpea (Cicer arietinum) CropsRosa Marina Arvayo-Ortiz, Martin Esqueda, Evelia Acedo-Felix et al.Abstract: Problem statement: Mexico is the third largest producer and exporter of chickpea (Cicer arietinum), with the states of Sinaloa and Sonora accounting for 70 and 20% of Mexico’s production, respectively. The most damaging disease affecting this species is caused by Fusarium oxysporum f.sp. Ciceris (FOC), which causes losses of up to 60% in Sonora. The objective of this study … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 1 · 31 Jan 2011 · 8,853 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleSpatial Variability of Irrigation Water Percolation Rates and Its Relation to Rice ProductivityW. Aimrun, M.S.M. Amin, A. GholizadehProblem statement: Study on spatial variability of vertical saturated hydraulic conductivity or percolation loss was conducted within a plot of an area of 1.2 ha paddy plot to find out the relationship between percolation rate and rice productivity. A paddy soil condition that permits percolation rate of 10-20 mm irrigation water day-1 was recommended in order to get high yield … …American Journal of Applied Sciences, Vol. 7, Issue 1 · 31 Jan 2010 · 8,146 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Spatial-Temporal Variability of Nitrates in a Section of the Cuneo Plain (North West Italy)Massimo Vincenzo Civita, Adriano Fiorucci, Bartolomeo VignaThe study of an aquifer system is very important, but also very complicated because of the high temporal and spatial variabilities of a system and because of the phenomena that are at play within the system. It is from these problems that the necessity arises of finding methods that are able to extend point knowledge to an entire area, while … …American Journal of Environmental Sciences, Vol. 3, Issue 3 · 30 Sep 2007 · 6,729 accessesView PDFCite