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| Registros recuperados: 1.150 | |
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| Ravn, Helle Weber; Christensen, Trine F.; Pedersen, Hanne Lindhard; Brandt, Kirsten; Diedrichsen, Birgitte; Kristensen, Charlotte V.; Jensen, Anders K.; Husted, Carina L.; Andersen, Jan Buch. |
| In the recent years there has been an increasing focus on the quality and health value of organic plant products compared with conventional products. The use of pesticides and concentrated fertilisers in conventional agriculture implies a risk of effects on plant composition, which may affect health of the consumer (Brandt & Mølgaard, 2001). To determine if organically grown plant food could provide more or less benefits to health than conventional food, a first step is to investigate the differences in the composition and relative concentration of natural compounds in the plant products. In this project apples were grown with two levels of nitrogen availability and with or without the use of |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health. |
| Ano: 2004 |
URL: http://orgprints.org/4883/1/4883.pdf |
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| Collier, Rosemary; Jukes, Andrew; Daniel, Claudia; Hommes, Martin. |
| Abstract: There has been a lot of emphasis over the years on the development and use of pesticides that are specific and/or physiologically selective. This is a property of the chemistry and mode of action of the pesticide and the physiological and biochemical attributes of organisms. However, there is also the potential to make pesticides more selective through their judicious use, based on critical selection, timing, dosage, placement and formulation of pesticides (which are often broad spectrum). This paper discusses approaches to increase the ecological selectivity of pesticides and pesticide application methods, in... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2016 |
URL: http://orgprints.org/32313/1/2016_IOBCCollier.pdf |
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| Wilson, Clevo; Tisdell, Clement A.. |
| Use of chemical inputs such as pesticides have increased agricultural production and productivity. However, negative externalities, too, have increased. The externalities include damage to the environment, agricultural land, fisheries, fauna and flora. Another major externality has been the unintentional destruction of beneficial predators of insects which has led to a virulence of many species of agricultural pests. Mortality and morbidity among agricultural workers, especially in developing countries from exposure to pesticides, are also common. The costs from these externalities are large and affect farmers’ returns. However, despite these high costs, farmers continue to use |
| Tipo: Working or Discussion Paper |
Palavras-chave: Pesticides; Agriculture; Environment; Human health; Sustainability; Hysteresis; Environmental Economics and Policy; Food Consumption/Nutrition/Food Safety. |
| Ano: 2000 |
URL: http://purl.umn.edu/48363 |
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| This desk study will attempt to identify natural pesticides for possible use in organic agriculture. The study concentrates on chemicals extracted fro plants or closely derived from them which have insecticidal, fungicidal or herbicidal action. The study has three main sections: (i) substances which are already approved for use in the UK, for example, Pyerthrins and Derris; (ii) substances licensed for use as pesticides eleswhere in the world, for example Neem and Linalool; and (iii) plant materials or substances which have some documented biocidally active potential but which have not been developed commercially, for example Delphinine and Hibiscus. |
| Tipo: Project description |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2024 |
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| SCHRACK, D.; COQUIL, X.; ORTAR, A.; BENOIT, M.. |
| In Europe, the pervasive use of pesticides in agricultural areas has led to the deterioration of the quality of groundwater and surface water, resources earmarked for human consumption. The aim of the European Water Framework Directive 91/474 is to restore the “good ecological status” of surface water and to protect water that might be used for drinking water production by 2015. Interactions within the soil determine the fate of environmental pesticides. Water resource contamination may persist for a long time after the last use of pesticides (i.e., atrazine). Pesticide persistence is highly variable. The fate and persistence of |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Air and water emissions. |
| Ano: 2009 |
URL: http://orgprints.org/15492/1/36%2DSchrack.pdf |
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| Collier, Rosemary; Daniel, Claudia; Hommes, Martin; Jukes, Andrew. |
| According to David Pimentel, 20 years ago, less than 0.1% of the pesticides applied reached their target pests (Pimentel, 1995). This was partly due to ‘poor’ application methods and partly because of the minuscule amount of pesticide either picked up or consumed by the pest. At the time, Pimentel was describing the application of pesticides mainly by sprays, including aerial spraying, and both pesticide chemistry and application technology have improved since then. However, a considerable proportion of pesticides are still applied as sprays, either to crop foliage or to the soil, and this continues to be a relatively untargeted method of application. |
| Tipo: Working paper |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2015 |
URL: http://orgprints.org/32296/1/2015_FocusGroupBrassicaSelectivity.pdf |
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| Starbird, S. Andrew. |
| In California, acceptance sampling is used to monitor the quality of processing tomatoes delivered by growers to processors. A proposal to change the current quality assurance policy was recently put forth to reduce the growers' incentive to use pesticides. In this article we examine the effect of alternative quality assurance policies on profit-maximizing growers' demand for pesticides. The results indicate that the demand for pesticides is sensitive to changes in the quality assurance policy and that the proposed policy would reduce the optimal level of pesticide use on processing tomatoes. Disregarding the impacts of quality assurance policy may... |
| Tipo: Journal Article |
Palavras-chave: Crop Production/Industries. |
| Ano: 1994 |
URL: http://purl.umn.edu/31225 |
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| Klein, Benoît. |
| The department of Charentes-Maritime has a maritime facade of 440 Km and a surface a rea of 6,383 Km2. The type of soil and the large maritime facade has allowed the development of two different activities: agriculture and shellfish farming. This shellfish farming takes place for a large part in the Marennes-Oléron basin. It regroups the production of oysters (50,000 tons per year) and the production of mussels. The shellfish farming creates 5,000 direct jobs. The agriculture, for its part, is divided into two main activitics: cattle farming and plant production, such as the culture of cereals, oleaginous, wine and other vegetables. The intensive culture induces the farmers to use a lot of pesticides, su ch as insecticides... |
| Tipo: Text |
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| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00451/56303/57891.pdf |
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| 角田, 英男; 上元, 好仁; 堀川, 洋. |
| Using silver nanoparticle substrate fabricated on silicon wafers, we studied pesticides (PALNOX : Thiram) and melamine in wheat flour by surface enhanced Raman spectroscopy(SERS). Based on relationship between the intensity of the highest peak, a liner regression was found in the range of 4-0.04ppm. The limit of detection for melamine using this SERS method was around 1ppm. SERS using the silver nanoparticle substrate and low-cost portable Raman instrument provide sensitive and highly useful analysis of pesticides and chemicals. |
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Palavras-chave: 迅速簡便; ラマン分光; SERS; 農薬; メラミン; Simple and rapid Raman spectroscopy; SERS; Pesticides; Melamine. |
| Ano: 2009 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2651 |
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| Centner, Terence J.; Gunter, Lewell F.. |
| The disposal of accumulated agricultural pesticides is an expensive proposition due to the hazardous nature of these materials. States have inititated unwanted pesticide collection efforts based on several funding options. Through an evaluation of regulations, funding options and comparison of amounts of pesticides collected to expenditures for pesticides, our paper offers some recommendations for future state collection efforts. It may be advantageous to give greater weight to efficiency considerations for the disposal of existing unwanted pesticide stocks, while equity considerations may be emphasized for the disposal of anticipated future stocks. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Environmental Economics and Policy. |
| Ano: 1997 |
URL: http://purl.umn.edu/16724 |
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| Registros recuperados: 1.150 | |
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