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Showing 1 to 20 of 84 for “"application rate"”.
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Optimization of in-situ tack coat application rate and installation
… phase 2, focuses on optimizing in-situ tack coat application rate and field installation. The main objectives of phase 2 were to validate the lab-determined optimum residual application rate for tack coat materials on a milled hot-mix asphalt (HMA) surface and to evaluate field performance of tack …
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Development of a testing approach for tack coat application rate at pavement layer interfaces
… different factors including tack coat material, application rate and temperature, as well as pavement mix type, volumetric characteristics, surface texture and cleanliness. Tack coat is a light layer of diluted asphalt that is applied to hot mix asphalt concrete (HMA) or Portland cement concrete …
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Determination of Optimum Tack Coat Application Rate for Geocomposite Membrane Use in Roads and Overlaid Bridge Decks
… infrastructure, bridges and roads, have deteriorated in the past two decades at an accelerated rate and are in need of maintenance and rehabilitation. Geosynthetics may have the potential to provide a long-term solution to some of the problems that are present in these roads and bridges. When …
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Automatic Control of Chemical Application Rate With Soil Organic Matter and Travel Speed as Inputs (Microprocessor, Digital Control)
… and efficient control of agricultural chemical application rate will allow a reduction in the use of pesticides for proper pest control with less environmental contamination. A microprocessor based sprayer control system was developed to regulate chemical application rate according to the soil …
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Long-term Effects of Broiler Litter Application Rate on Runoff, Leaching, and Soil Respiration from a Captina Silt Loam
… to enhance yields of forage grasses. However, application of BL to pasture lands in karst regions, like the Ozark Highlands, can potentially reduce water quality if BL-derived contaminants enter surface or groundwater via runoff or drainage. Additionally, BL applications stimulate carbon …
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Discerning Agronomic Best Management Practices for the Bioenergy Crop Camelina: A Focus on Water Requirements, Sowing Date and Method, and Nitrogen Application Rate in the Semiarid Environment of Northern Nevada
… stimulated multiple innovations and adaptive strategies to optimize agricultural productivity in semiarid regions of the world. However, water availability for agricultural production is a growing challenge globally and has significant implications for long term sustainable agriculture …
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Risk assessment formulation for nitrate leaching
… evaluating the risk of water pollution from the application of liquid dairy manure to agricultural fields was developed and applied. The GLEAMS (Groundwater Loading Effects of Agricultural Management Practices) (Ver 2.1) model was used to simulate NO₃-N leaching below the root zone for different …
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Validation of the aquacrop model for the irrigated african eggplant(solanum macrocarpon) at the UNZA field station
… raises crop productivity. The effect of water application rate on biomass and yield of African eggplant was evaluated at the University of Zambia, Field Station for partially irrigated, fully irrigated and rain fed eggplant crop under three water application rates at 50 percent, 75 percent and …
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Long-term Impacts of Annual Cattle Manure and Fertilizer on Soil Quality Under Corn-Soybean Rotation in Eastern South Dakota
… quality; however, their impacts under long-term application in corn-soybean rotation need to be evaluated. Nutrient based recommended rates of manure applications on soils are important and also need to be monitored. This study, therefore, was conducted at two long-term sites to assess the …
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Overhead sprinkler irrigation strategies to reduce water and nitrogen loss from container-grown plants
… to determine the influence of intermittent water application via overhead irrigation on water and N leaching, substrate water distribution, and plant growth in a pine bark substrate. Intermittent irrigation was defined as the application of a plants' daily water allotment in multiple applications …
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Modeling and study of infectious disease : stochastic modeling for antibiotic resistance and treatment strategies
… fraction treatment (50-50,60-40,80-20,100-0) strategies in ICU and finds that no single strategy will outperform all others. Human, hospital and pathogen conditions such as admission/departure rate, transmission rate, drug application rate, and incoming patients' characteristics influence the …
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Spray stake irrigation of container-grown plants
… media moisture deficit, irrigation application rate, and intermittent irrigation on irrigation efficiency [(amount applied - amount leached) amount applied' 100] of spray stake-irrigated, container-grown plants. In the first experiment, pine bark-filled containers were irrigated to …
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The influence of application timing and soybean (Glycine max L.) canopy on imazethapyr efficacy
… narrow row spacings and reduced herbicide rates in no-tillage systems shows promise (DeFelice et al., 1989). However, the issues of the appropriate herbicides to use, proper application timings, and the size of the weeds at the times of application become important factors to address. These …
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Laboratory Test Program of Rotary Plate Sprinklers
… the 1970's. These designs tend to produce small application areas resulting in high application rates that could exceed the infiltration capacity of the soil and result in runoff. In 1988, Nelson Manufacturing introduced their ROTATORTM and SPINNERTM series low pressure sprinkler heads that had …
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Management of annual bluegrass and bermudagrass in creeping bentgrass greens
… 200, 300, 400, and 500 g ai ha-1. A sequential application of each treatment was made on December 22, 2011 and February 29, 2012. An untreated check was included for comparison. The non-treated check pots exhibited 0% control and 0.59 to 0.83 g of biomass 3 weeks after initial treatment (WAIT), …
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Pyrolysis Processing and Feedstock Impact on Biochar Soil-Plant Interactions
… insensitive mutant). Biochar treatments at a 4% application rate increased plant available water (PAW) but had no effect on water content at the permanent wilting point. There was no effect of biochar on corn, alfalfa, or soybean germination in soil. Biochars reduced wild sunflower germination …
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Reclamation of fine-textured sodic soil using gypsum, langbeinite, and calcium chloride
The effects of various application rates of gypsum (Aqua-cal = finely ground gypsum), langbeinite (K₂SO₄.2MgSO₄), and CaCl₂ (anhydrous) on exchangeable Na removal and saturated hydraulic conductivity of a sodic soil were investigated under laboratory batch studies and laboratory column leaching …
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Characterization and agronomic evaluation of biochar amendments in a midwestern loam soil: effects on soybean yield, soil nutrient retention, and leachate quality
The development and application of biochar as a soil amendment has shown promising results for improving soil fertility, enhancing nutrient retention, and mitigating environmental degradation in agroecosystems. This dissertation investigates the physicochemical properties of biochar derived from …
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Corn responses to high levels of copper application as copper rich pig manure
… Virginia soils indicated that the long-term application of Cu as either copper sulfate or Cu rich pig manure, even at high application rates (average application rate for 9 years was 108 metric tons of manure ha⁻¹ year⁻¹ or 32 kg Cu ha⁻¹ year⁻¹), had no adverse effects on corn yields. Copper …
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The impact of biochar on soil functioning in two contrasting climates
Previous research has demonstrated that biochar addition to soil improves the soil’s physical and chemical characteristics, reduces nutrients leaching, increases crop yield and enhances microbial activity in the soil. This has attracted significant research interest into the effects of biochar …
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