Xem 1-20 trên 66 kết quả Pests control
  • Nowadays, chemical pesticides are the traditional solution to weed and pest problems, and although they have saved lives and crops, the greatest risk to our environment and our health comes from their use. Many significant problems from their use include con‐ tamination of the environment, the development of pesticide resistance in the target pest, the recovery of pest species, the phytotoxicity in crop fields, and the unacceptably high levels of pesticide/commodity residue in food.

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  • This book is a compilation of 29 chapters focused on: pesticides and food production, environmental effects of pesticides, and pesticides mobility, transport and fate. The first book section addresses the benefits of the pest control for crop protection and food supply increasing, and the associated risks of food contamination.

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  • The present book is a collection of selected original research articles and reviews providing adequate and up-to-date information related to pesticides control, assessment, and toxicity. The first section covers a large spectrum of issues associated with the ecological, molecular, and biotechnological approaches to the understanding of the biological control, the mechanism of the biocontrol agents action, and the related effects.

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  • Pest and disease management continues to be an important challenge to the agricultural community. Confronted with the shifts in pest pressure and the rise in new pest and crop problems, coupled with public concern over pesticide use and more stringent environmental regulations, today’s crop producer must exhibit good stewardship and stay current with new technologies in order to produce high-quality crops in a profitable manner.

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  • A preliminary study was carried out in mid 1999 on the status and potential impact of the introduction of exotic fish species in the Mekong Basin. Introductions have been made for four main purposes: aquaculture, stocking into lakes and reservoirs, pest control (mosquito) and the aquarium fish trade. Introductions of exotic species and movements of large quantities of fish for stocking are accompanied by risks to the environment, the possibility of native fish species declining through competition, predation or genetic interference, and the possible spread of disease....

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  • Within APEC little is known on the introduction of marine pests. Little practical information on measures to prevent introductions. Lack of knowledge in what individual countries are doing. Need to have information on what measures economies have implemented. What would be most useful to APEC Economies. Explore development of agreed regional strategic measures.

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  • During long time pest control was associated only to insecticides. The formulations were produced as an attempt of improving the insect control. However, some undesirable effects emerged in this time, mainly the toxin action and resistance. Insecticides are substances produced from chemical or biological products to control insect pests. The most common mode of action for insecticides is to kill insects by blocking physiological or biochemical processes (Ware & Whitacre, 2004).

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  • This book is part of the Green Chemistry series published by the Royal Society of Chemistry, and is designed to provide a modern overview of the current status of insecticides. We present the current approaches for insect pest control as green alternatives to classical agrochemicals, which should be of interest to a vast group of researchers: agrochemists, biochemists, chemists, toxicologists, etc. Throughout the book, the different approaches to pest control which involve ‘‘greener chemicals’’ in particular are emphasized.

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  • This book contains 20 chapters about the impact, environmental fate, modes of action, efficacy, and non-target effects of insecticides. The chapters are divided into 7 parts. Part 1 covers the non-target effects of insecticides, whereas part 2 is dedicated to integrated methods for pest control, in which insecticides are an important element for diminishing the populations of insect pests.

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  • The maintenance and operation of public swimming pools falls under the primary authority of the Michigan Department of Environmental Quality, Environmental Health Division, formerly Public Health Department. Yet, Michigan Department of Agriculture regulates the use of pesticides, which includes some chemicals used in swimming pool maintenance. Therefore, public pool operations require that the owner and operator comply with both departments’ rules governing the safe and lawful operation of swimming pools.

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  • Petroleum products are everywhere around us. They appear in visible forms, such as gasoline, diesel, kerosene, and aircraft fuels, and in less visible forms over the entire spectrum of industry, such as automobile lubricants, greases, carbon black for truck tires, bitumen for road building, the waterproofing in house roofs, feedstock for petrochemicals, synthetic fibers, and plastics. Petroleum feedstock is used in the manufacture of white mineral oils in eye ointment, hair oils, cosmetics, petroleum solvents, and pest control sprays....

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  • The structures and functionality of the human component in terms of society, economy, and rights among others should be such that they self-enforce and promote the persistence of the structures and functionality of the natural components—such as the ecosystem, biodiversity and biogeochemical cycles—and vice versa Cabezas et al. (2005).

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  • Determining How to Select a Sample Basic Concepts in Sampling • Population: the entire group under study as defined by research objectives – Researchers define populations in specific terms such as “heads of households located in areas served by the company who are responsible for making the pest control decision.”

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  • Suggested citation for this report: Anne Turbé, Arianna De Toni, Patricia Benito, Patrick Lavelle, Perrine Lavelle, Nuria Ruiz, Wim H. Van der Putten, Eric Labouze, and Shailendra Mudgal. Soil biodiversity: functions, threats and tools for policy makers. Bio Intelligence Service, IRD, and NIOO, Report for European Commission (DG Environment), 2010.

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  • More recently, a QSAR (Quantitative Structure Activity Relantionship) investigation was carried out on a series of nostoclide analogues presenting the general structure (43) to correlate molecular descriptions with their in vitro biological activity (the ability to interfere with ligh-driven reduction of ferrycianide by isolated spinach chloroplasts thylakoid membranes). The results of this investigation suggested that the degree of inhibition efficiency of this class of compounds is intimately associated with their polarity (Teixeira et al, 2009).

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  • 5 Biological Activity of Waters Containing Cationic Surfactants Cationic surfactants along with anionic and nonionogenic surfactants are one of the main classes of surfactants. The proportion of cationic surfactants in the total volume of synthetic surfactants used in the economy is approximately equal to 22% (for the U.S.; Ainsworth 1992). Cationic surfactants enter aquatic ecosystems together with polluted waters because they are widely used in many industries including petroleum industry, oil refining industry, petrochemical industry, and gas industry.

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  • Chapter 15 Ecological Applications at the Level of Population Interactions: Pest Control and Harvest Management 15.1 Introduction Humans are very much a part of all ecosystems. Our activities sometimes motivate us to drive towards extinction the species we identify as pests, to kill individuals of species we harvest for food or fiber while ensuring the persistence of their populations.

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  • By playing a role in the near-annihilation of a species, Theodore Roosevelt, the president of the United States at the turn of the twentieth century, unwittingly laid the groundwork for the most dramatic triumph yet in the use of artificial insemination (AI) to rescue a species from extinction. In the early 1900s, waves of immigrants from Europe settled in the American Midwest. As humans transformed the land, they declared war on a perceived pest: the prairie dog.

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  • Lenne, 1996) and to decrease damage by pests and pathogens (Cantelo & Sanford, 1984). In some crops (e.g. rice) this is applied on a large scale to maximize yield by minimizing damage by pathogens (Zhu et al., 2000). Information on genetic diversity and population structure also assists plant breeding in the selection of parents for crossing, providing a more rational basis for expanding the gene pool, and for identifying materials that harbor genes of value for plant improvement.

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  • Among the methods to control weeds, the use of herbicides or weed killers has become the most reliable and least expensive tool for weed control in places where highly mechanized agriculture is practiced. Since the introduction of 2,4-dichlorophenoxyacetic acid (2,4-D) in 1946, several classes of herbicides were developed that are effective for broad-spectrum of weed control (Böger et al, 2002; Cobb, 1992; Ware, 2000). It is well know that various compounds can interfere with photosynthetic electron transport....

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