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| Registros recuperados: 154 | |
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| Luna Cruz, Alfonso. |
| Bactericera cockerelli es una de las plagas más importantes en solanáceas en México. Su manejo se basa en el uso de insecticidas y recientemente se ha explorado el uso del parasitoide Tamarixia triozae dentro de un programa de MIP. El objetivo del presente trabajo fue explorar la compatibilidad de insecticidas con este parasitoide. En este trabajo se evaluó, en condiciones de laboratorio (25±2ºC, 60±5% H.R.), la toxicidad de Azadiractina, Spinosad, Imidacloprid y Abamectina sobre T. triozae y B. cockerelli. Los cuatro insecticidas resultaron tóxicos tanto para el psílido como para el parasitoide, aunque el grado de toxicidad dependió de la especie, insecticida, estado biológico específico, dosis y forma en que los insectos se expusieron a los productos. De... |
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Palavras-chave: Psyllidae; Plaguicidas; Control biológico; Manejo integrado; Pesticides; Biological control; Pest management; Entomología y Acarología; Maestría. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/119 |
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| Murillo Hernández, Juan Eduardo. |
| Cuando no se puede evitar el uso de insecticidas es recomendable que la propuesta de manejo de sus plagas incluya el efecto de dichos insecticidas sobre los enemigos naturales (EN). En el presente estudio se evaluó el efecto de la residualidad y la toxicidad letal y subletal de los insecticidas beta-cyfluthrin, bifenazate, clorantraniliprol, flonicamid, spirotetramat y thiametoxam sobre Catolaccus hunteri, un ectoparasitoide del picudo del chile, Anthonomus eugenii. En las evaluaciones se empleó el método de contacto residual, se utilizaron discos foliares de plantas de chile como superficies de exposición. Se encontró diferencia significativa en la toxicidad letal, según la clasificación de la IOBC, thiametoxam resultó moderadamente nocivo (98% de... |
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Palavras-chave: Picudo del chile; Control biológico; Enemigos naturales; Plaguicidas; Efectos subletales; Pepper weevil; Biological control; Natural enemies; Pesticides; Sublethal effects; Entomología y Acarología; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2321 |
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| Maggi, Pierre. |
| The effect of the 2 pesticides most frequently used against mosquitoes was tested on a number of marine organisms. Growth inhibition was tested using Phaeodactylum tricornutum and Gyrosigma spencer (algae). To 0.5 ml of culture inoculum containing similar to 100000 cells in exponential growth phase, 9.5 ml of insecticide in varying concentrations were added and the growth was recorded every 48 hour; LG sub(50) was determined. Muscular activity and filtration rate of Crassostrea angulata were tested. The acute toxicity was tested using 4 species of gastropods, 2 lamellibranchs, 5 crustaceans, 1 coelenterate and 3 fishes; the species used were: Gibbula umbilicalis, Purpura lapillus, Littorina littorea, Patella vulgata, Mytilus edulis, Cardium edule, Artemia... |
| Tipo: Text |
Palavras-chave: Marine organisms; Toxicity test; Fenitrothion; Abate; Pesticides. |
| Ano: 1973 |
URL: http://archimer.ifremer.fr/doc/1973/publication-2229.pdf |
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| Di Poi, Carole; Costil, Katherine; Bouchart, Valerie; Halm-lemeille, Marie-pierre. |
| Despite a growing scientific attention on ecological impact of emerging pollutants (EPs) such as pharmaceuticals, personal care products, and pesticides, knowledge gaps remain regarding mixture toxicity and effects on aquatic organisms. Several EPs were screened in seawater (Normandy, France), and the ecotoxicity of five compounds, chosen on their occurrence in ecosystems and use worldwide, was assessed and were the biocides methylparaben (MP) and triclosan (TCS), a pesticide degradation product (AMPA), and the pharmaceuticals venlafaxine (VEN) and carbamazepine (CBZ). The acute or sub-chronic toxicity, alone or in binary/ternary mixtures of three of them (CBZ, AMPA, and MP), was assessed on one marine and two freshwater organisms: Crassostrea gigas,... |
| Tipo: Text |
Palavras-chave: Pharmaceuticals; Personal care products; Pesticides; Mixture and single-compound toxicity; Freshwater species; Marine bivalve. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00389/50004/52260.pdf |
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| Taylor, Richard D.; Koo, Won W.. |
| Pesticides have become a major farm production cost over the past 25 years. There are price and label differences for agricultural herbicides between the United States and Canada. Trade names are different in some cases, label restrictions vary, and weights and measures are different. The reasons for the price differences are unclear. Whether they are due to increased costs in labeling requirements, different levels of competition and use, or market segmentation is not determined. The largest total impact of using lower priced Canadian herbicide is on HRSW, followed by durum and corn. The largest per acre impact is for canola, corn, and HRSW. Herbicides with the largest total impact are Puma, followed by Roundup and Fargo. Net farm income for large,... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Agricultural Herbicide Costs; Trade armonization; North Dakota Representative Farm; Land Value; Pesticides; Crop Production/Industries. |
| Ano: 2001 |
URL: http://purl.umn.edu/23634 |
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| REIS,F.C.; VICTÓRIA FILHO,R.; ANDRADE,M.T.; BARROSO,A.A.M.. |
| ABSTRACT: Sugarcane is one of the main agricultural cultivations of Brazil, and one of the crops in which herbicides are most applied. In the 2017/2018 season, the estimated sugarcane production was 694.54 million tons, with an estimated increase of 0.9% in yield for this season. In order to evaluate the use of herbicides in this crop in the São Paulo State during a five-year period, a survey was carried out with sugarcane farmers. The use of herbicides applied alone and in a formulated mixture, according to their mechanism of action, were evaluated from 2010 to 2014. Photosystem II inhibitor herbicides were the most used in this period and the total amount of herbicides of almost all mechanism of action increased from 2010 to 2014, except for photosystem... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Marketing; Mechanism of action; Research; Pesticides; Saccharum officinarum. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100262 |
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| Cunha,João P. A. R. da; Alvarenga,Cleyton B. de; Rinaldi,Paula C. N.; Marques,Matheus G.; Zampiroli,Renan. |
| ABSTRACT The use of remotely piloted aircrafts (RPAs) to apply plant protection products has grown a lot in agriculture worldwide. However, little research data are available regarding the efficiency and safety of this method, especially in Brazil. Thus, this review aimed to present the current scenario of scientific research involving RPAs in the application of pesticides. Several factors interfere with the quality of this type of application. Among them are height and flight speed, droplet generator elements, application rate, and spray solution properties. In general, applications have been performed between 1.0 m and 3.0 m of height and 1.0 m s-1 and 7.0 m s-1 of speed. As for the droplet generator element, there is still no clarity as to the ideal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Application technology; Drones; Pesticides; Spraying. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162021000200245 |
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| Fermam, Ricardo Kropf Santos; Antunes, Adelaide Maria de Souza. |
| Pesticides play an important role in agriculture, prevent loses by pests which destroy cultures and causes several damages to producers and to exporting countries of agriculture products. However, pesticides leave residues where they are used. A parameter used for residue quantification is known Maximum Residue Limit (MRL). This parameter is the most important, not only in terms of public health, but mainly international trade, causing many impacts that can represent, in some cases, barriers to trade between countries, especially when established values for a country differ from those established by international organizations. The present Article show how this parameter impacts agriculture products´ trade of developing countries, based on case study. |
| Tipo: Journal Article |
Palavras-chave: Pesticides; Residue; MRL; International trade; International Relations/Trade. |
| Ano: 2009 |
URL: http://purl.umn.edu/56853 |
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| FELICIO,ANA LUCIA S.M.; MONTEIRO,ALESSANDRA M.; ALMEIDA,MARIANA B.; MADEIRA,TIAGO B.; NIXDORF,SUZANA L.; YABE,MARIA JOSEFA S.. |
| ABSTRACT Diuron is one of the most widely herbicide used worldwide, which can undergo degradation producing three primary metabolites: 3,4-dichlorophenylurea, 3-(3,4-dichlorophenyl)-1-methylurea, and 3,4-dichloroaniline. Since the persistence of diuron and its by-products in ecosystems involves risk of toxicity to environment and human health, a reliable quantitative method for simultaneous monitoring of these compounds is required. Hence, a simple method without preconcentration step was validated for quantitation of diuron and its main metabolites by high performance liquid chromatography with ultraviolet detection. Separation was achieved in less than 11 minutes using a C18 column, mobile phase composed of acetonitrile and water (45:55 v/v) at 0.86 mL... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pesticides; Degradation products; HPLC-UV; Soil; Environmental control. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000401235 |
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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 pesticides and in increasing quantities. In this paper, we examine this... |
| 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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| Registros recuperados: 154 | |
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