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Physico Chemical Properties In Flight Evaporation And Spread Of Spray Droplets Containing Pesticide Adjuvants
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Book Synopsis Physico-Chemical Properties, In-Flight Evaporation and Spread of Spray Droplets Containing Pesticide Adjuvants by : RA. Downer
Download or read book Physico-Chemical Properties, In-Flight Evaporation and Spread of Spray Droplets Containing Pesticide Adjuvants written by RA. Downer and published by . This book was released on 1993 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: In-flight evaporation, droplet spread on water sensitive paper, equilibrium surface tension, and dynamic surface tension were measured for each of 12 adjuvants mixed with water. The correlation between the physico-chemical properties and droplet spread was determined. The results indicated that the adjuvants had significant and varied effects upon the parameters that were measured. Speculative rankings were derived for (A) evaporation rates and (B) spreading potentials. The rankings were compared with manufacturer's claims for the adjuvants and the results are discussed in terms of the benefits to be derived from using these products in pesticide applications.
Book Synopsis Pesticide Formulations and Application Systems by : Paul D. Berger
Download or read book Pesticide Formulations and Application Systems written by Paul D. Berger and published by ASTM International. This book was released on 1993 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented at the 13th Symposium on [title], held in Miami, Florida in November 1992. The subjects involve a wide range of disciplines of interest to formulators, basic pesticide manufacturers, applicators, and suppliers to the agrochemical industry. The volume is a compilation of the latest d
Book Synopsis Impact of Adjuvants on Droplet Spreading and Droplet Deposit Area After Spray Application by : Peter Baur
Download or read book Impact of Adjuvants on Droplet Spreading and Droplet Deposit Area After Spray Application written by Peter Baur and published by . This book was released on 2008 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of adjuvants on spreading of small droplets after spray application and of larger drops with volumes in the microliter range was studied. The characterization of spreading as affected by adjuvants is done often with lab tests on artificial surfaces. In these tests much larger drops in the microliter range are used and plant factors such as the presence of hairs or crystalline waxes and spray related factors such as rapid evaporation, a different drop size magnitude, a drop size distribution in reality, and effects of adjuvants on drop size are not considered. For a set of test compounds from different chemical classes we evaluated stepwise the approximation to real systems with plant surfaces representing the major surface features. With larger drops of 10 and 20 μl we obtained a surprisingly good correlation of spreading on Parafilm® M and the mature leaves of Chlorophytum, tomato, rape, and corn. With good wetters better spreading was observed on leaves than on Parafilm M. The correlation of spread diameters with real spray (flat fan nozzle, 300 l/ha) on an easily wettable plant and drops on Parafilm M was very good as well though with the best spreaders the gravimetric momentum on spreading and longer times for evaporation overestimated spreading of the larger droplets on Parafilm M. If the mean spread diameters of real spray was plotted vs. the logtransformed spread diameter on Parafilm M a linear correlation was obtained (r2=0.92).
Book Synopsis Forestry Pesticide Aerial Spraying by : J. J. C. Picot
Download or read book Forestry Pesticide Aerial Spraying written by J. J. C. Picot and published by Springer Science & Business Media. This book was released on 1997 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book deals quantitatively with the generation, dispersion, and deposition of pesticide droplets on vegetation and with off-target drift of undeposited droplets. A computer simulation model of calculating dispersion, deposition, and drift is described with comparisons between calculated results and field measurement results. The model includes the effects of aircraft vortex, atmospheric turbulence, droplet evaporation, and droplet deposition on foliage. Model output includes values of droplet deposit density and size on foliage and ground as well as droplet concentration and size in the drift cloud. In addition, a detailed description of droplet atomizer characterization methods is presented along with a large number of atomizer spectrum results for atomizers in current use. An analysis of a number of forestry spraying innovations is presented. This text is an essential tool in assessing the efficacy and environmental impact of proposed and actual forest spray operations.
Book Synopsis The Impact of Spray Adjuvants on Solution Physical Properties and Spray Droplet Size by : Bradley K. Fritz
Download or read book The Impact of Spray Adjuvants on Solution Physical Properties and Spray Droplet Size written by Bradley K. Fritz and published by . This book was released on 2018 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past several years, numerous anecdotes from aerial applicators have surfaced concerning observations of increased numbers of fine droplets seen in the applied spray clouds, often associated with tank mixtures that contain crop-oil concentrates (COCs) and foliar fertilizers (FFs). Efforts were made herein to correlate surface tension and viscosity to spray droplet size under a variety of aerial application conditions, but these efforts were unsuccessful. In addition, spray mixtures were examined to compare relative evaporation rates. Researchers are encouraged to actively pursue this line of work. The addition of several adjuvants and FFs were found to significantly affect spray droplet size, so applicators should pay careful attention to spray tank composition when making aerial spray applications.
Book Synopsis Interactions Between Adjuvants, Agrochemicals and Target Organisms by : P.J. Holloway
Download or read book Interactions Between Adjuvants, Agrochemicals and Target Organisms written by P.J. Holloway and published by Springer. This book was released on 1994-10-07 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years the importance of adjuvants for optimising the activity of agrochemicals has become increasingly recognized. This book is aimed at accumulating the current knowledge of the interactions between adjuvants, agrochemicals and target organisms. It provides results, and ideas for future research and defines new methodological, biomechanistic and systematic approaches which can be implemented to streamline research and development of formulations and adjuvant/active ingredient combinations. The book contains micrographs of leaf surfaces and spray deposits, graphical and statistical presentations, and data on the properties of adjuvants. In particular a case study is presented demonstrating the interactions possible between formulation and adjuvant types.
Book Synopsis Evaporation of Pesticide Droplets on Surfaces Under Various Relative Humidity Conditions by : H. Zhu
Download or read book Evaporation of Pesticide Droplets on Surfaces Under Various Relative Humidity Conditions written by H. Zhu and published by . This book was released on 2009 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is important to understand the evaporation process of pesticide droplets on targets for increasing the efficiency and efficacy of foliar applied insecticide and fungicide spray applications. Evaporation characteristics of five droplet sizes (246, 343, 575, 762, and 886 ?m) under three relative humidity (RH) conditions (30, 60, and 90 %) were studied in a laboratory. Sequential images of evaporating droplets placed inside a small environmentally controlled chamber were obtained using a stereoscope for determination of droplet evaporation time and residual patterns. The spray mixtures included different combinations of water, a nonionic colloidal polymer drift retardant, an alkyl polyoxyethylene surfactant, and an insecticide. The droplet evaporation was investigated on the surfaces of hydrophilic and hydrophobic glass slides which represented ideal non-waxy and waxy leaf surfaces, respectively. Among the spray mixtures investigated, the droplets containing the drift retardant had the longest evaporation time, and the droplets containing the surfactant had the shortest evaporation time after these additives were added into insecticide mixtures. The mean evaporation time of 246, 343, 575, 762, and 886 ?m droplets containing water and the insecticide without additives at 60 % RH on the hydrophilic surface were 43, 77, 133, 226, and 384 s, respectively. The mean evaporation times of the same size droplets containing the same insecticide but mixed with the surfactant were 26, 47, 77, 156, and 251 s, respectively. The evaporation time of 575 urn droplets containing the drift retardant at 60 % RH increased from 159 s to 224 s when the deposition surface changed from the hydrophilic slide to the hydrophobic slide. The evaporation time of droplets greatly increased as RH increased, and also increased exponentially as the droplet size increased. Therefore, spray additives, target surface fine structure and RH greatly influenced the evaporation time of spray droplets.
Book Synopsis Proceedings of Fourth International Symposium on Adjuvants for Agrochemicals by : Robyn E. Gaskin
Download or read book Proceedings of Fourth International Symposium on Adjuvants for Agrochemicals written by Robyn E. Gaskin and published by . This book was released on 1995 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Abstracts of Papers by : American Chemical Society. Meeting
Download or read book Abstracts of Papers written by American Chemical Society. Meeting and published by . This book was released on with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technology in Agriculture by : Fiaz Ahmad
Download or read book Technology in Agriculture written by Fiaz Ahmad and published by BoD – Books on Demand. This book was released on 2021-10-13 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food security is one of the primary themes of the United Nations’ Sustainable Development Goals. In this regard, agricultural engineering is considered the backbone of agriculture, and agricultural mechanization is considered a helpful way to enhance crop yield and farmers’ profitability. Technology in Agriculture presents research in the field of agricultural engineering technologies and applications in agricultural equipment engineering, biosystem engineering, energy systems engineering, and computers in agriculture. It provides an overview of recent advancements in agricultural engineering and examines key aspects of emerging technologies and their applications. In addition, the book explores modern methodologies such as artificial intelligence and machine learning for agricultural mechanization.
Book Synopsis The Future Role of Pesticides in US Agriculture by : National Research Council
Download or read book The Future Role of Pesticides in US Agriculture written by National Research Council and published by National Academies Press. This book was released on 2000-11-02 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although chemical pesticides safeguard crops and improve farm productivity, they are increasingly feared for their potentially dangerous residues and their effects on ecosystems. The Future Role of Pesticides explores the role of chemical pesticides in the decade ahead and identifies the most promising opportunities for increasing the benefits and reducing the risks of pesticide use. The committee recommends R&D, program, and policy initiatives for federal agriculture authorities and other stakeholders in the public and private sectors. This book presents clear overviews of key factors in chemical pesticide use, including: Advances in genetic engineering not only of pest-resistant crops but also of pests themselves. Problems in pesticide useâ€"concerns about the health of agricultural workers, the ability of pests to develop resistance, issues of public perception, and more. Impending shifts in agricultureâ€"globalization of the economy, biological "invasions" of organisms, rising sensitivity toward cross-border environmental issues, and other trends. With a model and working examples, this book offers guidance on how to assess various pest control strategies available to today's agriculturist.
Book Synopsis Public Health Significance of Urban Pests by : Xavier Bonnefoy
Download or read book Public Health Significance of Urban Pests written by Xavier Bonnefoy and published by World Health Organization. This book was released on 2008 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second half of the 20th century and the beginning of the 21st century witnessed important changes in ecology, climate and human behaviour that favoured the development of urban pests. Most alarmingly, urban planners now face the dramatic expansion of urban sprawl, in which city suburbs are growing into the natural habitats of ticks, rodents and other pests. Also, many city managers now erroneously assume that pest-borne diseases are relics of the past. All these changes make timely a new analysis of the direct and indirect effects of present-day urban pests on health. Such an analysis should lead to the development of strategies to manage them and reduce the risk of exposure. To this end, WHO invited international experts in various fields - pests, pest-related diseases and pest management - to provide evidence on which to base policies. These experts identified the public health risk posed by various pests and appropriate measures to prevent and control them. This book presents their conclusions and formulates policy options for all levels of decision-making to manage pests and pest-related diseases in the future. [Ed.]
Author :Food and Agriculture Organization of the United Nations Publisher :Food & Agriculture Org. ISBN 13 :9789251022351 Total Pages :216 pages Book Rating :4.0/5 (223 download)
Book Synopsis Manual of Pest Control for Food Security Reserve Grain Stocks by : Food and Agriculture Organization of the United Nations
Download or read book Manual of Pest Control for Food Security Reserve Grain Stocks written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 1985 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Forest Insect Pests in Canada by : John Alexander Armstrong
Download or read book Forest Insect Pests in Canada written by John Alexander Armstrong and published by Canadian Government Publishing. This book was released on 1995 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers presented in this book cover the range of forest insect pest management activities in Canada. The first section contains papers on the current status of insect pests by region, including data on insect populations and extent of defoliation caused by the insect. The next section covers pest management technology, including the use of insecticides, insect viruses, fungal pathogens, growth regulators, antifeedants, pheromones, natural predators, and aerial spraying. The third section contains papers on the application of technology and equipment for forest pest control, and includes papers on the impacts of insecticides on the forest environment. The fourth section describes operational control programs by province. The final paper presents future strategies for the management of forest pests. An author index is included.
Book Synopsis Commercial Greenhouse Cucumber Production by : Jeremy Badgery-Parker
Download or read book Commercial Greenhouse Cucumber Production written by Jeremy Badgery-Parker and published by NSW Agriculture. This book was released on 2015-02-26 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive guide to the basics of growing greenhouse cucumbers, this manual aims to assist Australian greenhouse growers in the development of good agricultural practices. This manual contains science-based information in a simple to use format that is relevant to a basic greenhouse horticultural enterprise to controlled environment horticulture. CONTENTS About this manual List of tables Introduction to greenhouse cucumber production Growing cucumbers Optimising production Greenhouse design and technology Hydroponic systems and technology Feeding the crop Plant nutrition Cucumber disorders and their management Cucumber diseases and their management Cucumber pests and their management Pesticides, sprays and their use in cucumbers Marketing and handling of cucumbers Waste management Health and safety in the greenhouse Some resources and further reading
Book Synopsis Surfactants in Agrochemicals by : TharwatF. Tadros
Download or read book Surfactants in Agrochemicals written by TharwatF. Tadros and published by Routledge. This book was released on 2018-03-29 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work highlights the physical chemistry of surfactant solutions, detailing a fundamental method of selecting surfactants for agrochemical formulations and delineating how surfactants enhance the biological efficacy of agrochemicals. The unique properties of surfactants that have a major influence on the performance of an agrochemical are summarized.;The book is intended for physical, surface and colloid chemists; biochemists; microbiologists; agronomists; research and development personnel in the pesticide and fertilizer industries; and upper-level undergraduate and graduate students taking chemistry and chemical engineering courses.;College and university bookstores may order five or more copies at a special price which is available on request from Marcel Dekker Inc.
Author :United States. Environmental Protection Agency. Office of Water Programs Publisher : ISBN 13 : Total Pages :436 pages Book Rating :4.:/5 (319 download)
Book Synopsis Pesticide Usage and Its Impact on the Aquatic Environment in the Southeast ... by : United States. Environmental Protection Agency. Office of Water Programs
Download or read book Pesticide Usage and Its Impact on the Aquatic Environment in the Southeast ... written by United States. Environmental Protection Agency. Office of Water Programs and published by . This book was released on 1972 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
