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Showing 1 to 20 of 27 for “"soil acidity"”.
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Impact of soil acidity on groundnut productivity in Mpumalanga and KwaZulu - Natal Province
… hypogaea L.] is grown on sandy or sandy loam soil by the smallholders in the lowveld region of Mpumalanga and the Northern coast of KwaZulu-Natal. These soils are highly susceptible to leaching, which leads to acid-soil infertility. The goal of the current study was to examine the fertility …
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GROWTH, NODULATION AND NITROGEN FIXATION OF ALFALFA (MEDICAGO SATIVA L) AND RED CLOVER (TRIFOLIUM PRATENSE L) AS INFLUENCED BY SOIL ACIDITY AND LIMING
… were conducted to examine the influence of soil acidity and liming on the growth of Rhizobium and the nodulation, nitrogen fixation, and yield of alfalfa and red clover.</p><p>In the greenhouse, from soil pH 5.0 to 5.6, nitrogen fixation was shown to be more correlated to Al saturation than …
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Acidity of certain Virginia soils as related to their mineralogy and chemistry
… investigation were to (1) segregate the forms of soil acidity in certain Virginia soils and to study each form Independently, (2) to develop techniques to more accurately define the components of soil acidity, and (3) to relate forms of soil acidity to mineralogical and chemical properties and …
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Soil potassium level in relation to potassium treatment, season of year and soil moisture level
Soil samples on twice monthly basis were taken from six plots located on Agronomy-plant pathology South farm and five samplings from four plots located on the Agronomy Northern Experiment Station at DeKalb. Twice monthly soil samples showed that percent soil moisture content, soil acidity, …
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Ecological Enhancement of Timber Growth: Applying Compost to Loblolly Pine Plantations
… for accelerated rates of growth for the trees. Soil parameters were also monitored. A total of 270 trees were planted and studied in a northeast Texas forest ecosystem. Compost rates of 5, 25, and 50 tons per acre with either soil or compost backfill were utilized and compared to a control …
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Spectroscopy as a tool for the management of soil acidification
Globally, soil acidity is a significant problem for crop production. It affects both surface and subsurface soils, reduces availability of essential nutrients, increases aluminium toxicity generating yield losses and reduces productivity in agricultural crops. While lime (CaCO3) application is an …
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Pengaruh pemberian kapur dan pupuk kandang pada tanah latosol terhadap pertumbuhan bibit tanaman jarak pagar (Jatropa curcas L)
… Latosols land use constraints are high soil acidity and have a low nutrient content. Attempt to overcome soil acidity and liming is to improve the soil fertility by fertilizing. The purpose of this study was to investigate the effect of lime dose and goat manure, and to determine dose …
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Improved Management of Acid Sulfate Soils for Rice Production in Casamance, Senegal
… rice is primarily produced, have acid sulfate soils with low pH and potential aluminum and iron toxicity. The goal of this work was to determine if soil amendments can alleviate soil acidity, counteract the negative biogeochemical effects that occur in flooded conditions, and increase rice …
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The amendment of acid soil with an ettringitic waste and its effects on plant growth
… the waste had potential as an ameliorant of acid soil, research into this possibility was initiated. Following the determination of a calcium carbonate equivalent (HCl-CCE) value of 78% using the HCl back titration method of Horwitz (1980), an incubation experiment was initiated using three acid …
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The potential of lime-stabilized and chemically-fixed municipal sewage sludges for land application as lime or nitrogen sources
… for utilization as amendments to acid soils. Laboratory incubation studies were employed to evaluate calcium carbonate equivalence (CCE) and nitrogen (N) mineralization rates of these sludges when applied to three acid Typic Hapludults from Virginia. Greenhouse studies were conducted to …
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Forest soil and vegetation characteristics in two forest types following wildfire in the Shenandoah National Park, Virginia
… was established to measure post-fire forest soil and vegetation characteristics in both the mixed pine and mixed oak forest types occurring on Dovel Mountain in the Shenandoah National Park, Virginia. Vegetation and soil results represent one (1989) and two (1990) growing seasons following …
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Impacts of selected leguminous tree species and kaolinite pre-amendment on oil-contaminated soil for bioremediation in the oil-bearing region of Nigeria
… and kaolinite pre-amendment on oil-contaminated soil. It covered assessment of different levels of contamination (0, 25, 50, 75 and 100 ml in 4000 g soil; which represents the degree of light crude oil spillage concentration as 0.0, 0.63, 1.25, 1.88 and 2.5 %v/w) on the growth performance of …
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Lucerne establishment studies on two types of uncultivated country : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Agricultural Science with Honours in the University of Canterbury, Lincoln College
… is not common due to low seedling vigour and soil acidity problems which require further investigation. It is well recognised that over the majority of the area where lucerne would be of value on the unimproved grasslands, unless satisfactory alternatives to the conventional introduction …
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The impact of plantations of Pinus spp. on the chemical properties of soils and stream waters in South African upland catchments
… significant component of the acid load to forest soils and can result in significant decreases in soil pH, acid neutralising capacity and base status. Despite this, the possibility that these processes can result in a significant transfer of acidity to drainage solutions and consequently to …
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Acid deposition effects on soil chemistry and forest growth on the Monongahela National Forest
… impact forest ecosystems. AD may acidify soils through base cation leaching or Al mobilization, may cause accumulation of nitrates and sulfates in soils, and in some cases has been related to forest decline. The Monongahela National Forest (MNF) lies downwind from many sources of AD …
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Carbon and nitrogen cycling in watersheds of contrasting vegetation types in the Fernow Experimental Forest, West Virginia
… and N across both watersheds and identified key soil properties associated with NO3-N in soil solution and streamwater. In a third study, I performed a soil inoculation and incubation experiment, which utilized soil from both watersheds, mixed in ratios in order to create a gradient of soil …
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The movement of calcium and magnesium in selected Virginia soils from surface applied dolomitic limestone
… Mg ha⁻¹ on the Piedmont and Ridge and Valley soils were made to seven acid Virginia soils. These amendments were made to document movement of Ca and Mg as well as neutralization of soil acidity within these soil profiles. During the fourth growing season following application, samples in 5 or …
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Alfalfa growth on acid soil as influenced by Al, Ca, pH and Mo
Soil acidity is a major cause of low yields of alfalfa (Medicago sativa L.) in the southeastern United States. Two field experiments were conducted on an Ernest silt loam soil (fine—loamy, mixed, mesic Aquic Fragiudult) to determine what conditions are necessary for optimal alfalfa growth in an …
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