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Registros recuperados: 43 | |
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Deepak, M.S.; Spreen, Thomas H.; VanSickle, John J.. |
This study evaluates the economic impact of a ban on methyl bromide on the U.S. winter fresh vegetable market for six major crops: tomatoes, green peppers, cucumbers, squash, eggplant, and watermelons. Florida is the primary domestic supplier of these products. Mexico and Texas are the competing suppliers of the five vegetable crops and peppers, respectively. Leontief technologies represent both monocrop and double-crop production systems; linear inverse demand functions represent four demand regions in the U.S. and Canada. By increasing production costs and reducing yields, a ban on methyl bromide decreases Florida's FOB revenues by 54% and increases those of Mexico by 65%. Price increases to U.S. fresh vegetable consumers range from near zero to over... |
Tipo: Journal Article |
Palavras-chave: Fresh vegetables; Methyl bromide; Pesticide; Quadratic programming; Spatial equilibrium; Crop Production/Industries. |
Ano: 1996 |
URL: http://purl.umn.edu/15113 |
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Wenting, Song; Xinhong, Fu; Deping, Xiong; Yan, Wang; Lian, Huang. |
The Ministry of Agriculture of People’s Republic of China put in practice in non-hazardous food production and high-toxicity pesticides elimination, which aim at human, food and environmental safety. To investigate 491 farmers in Sichuan Province, the paper analyzes comparatively training content, fixed-point samples, different areas and training influence. The training content focuses on pesticide purchase, label reading, personal protection, container disposal, sprayer maintenance and sprayer cleaning. The results of SPSS statistical software show that there is a significant difference in 30 fixed-point samples between before and after training, and each index has obvious performance. And the results of component score and comprehensive scores of... |
Tipo: Conference Paper or Presentation |
Palavras-chave: Training performance; Farmers; Pesticide; Agricultural and Food Policy; Community/Rural/Urban Development; Environmental Economics and Policy; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Institutional and Behavioral Economics; Q16. |
Ano: 2009 |
URL: http://purl.umn.edu/49973 |
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Centner, Terence J.. |
Millions of pounds of unwanted pesticides have accumulated in barns throughout our country. The potential environmental and health risks posed by this situation has garnered public attention and governmental action. The federal government has revised its Universal Waste Rule so that it is easier to dispose of unwanted pesticides rather than simply banned pesticides. Nearly every state has initiated efforts to collect and dispose of accumulated pesticides in a safe manner. While the possession of unwanted pesticides generally is not illegal, producers need to follow requisite legal requirements and dispose of pesticides properly to avoid legal infractions. To assist producers, the implementation of a permanent apparatus is advised for the disposal of... |
Tipo: Working or Discussion Paper |
Palavras-chave: Hazardous waste; Pesticide; Pesticide collection program; Universal waste rule; Environmental Economics and Policy. |
Ano: 1997 |
URL: http://purl.umn.edu/16667 |
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Picinin,Lidia Cristina Almeida; Toaldo,Isabela Maia; Hoff,Rodrigo Barcellos; Souza,Fernando Nogueira; Leite,Mônica Oliveira; Fonseca,Leorges Moraes; Diniz,Soraia Araújo; Silva,Marcos Xavier; Haddad,João Paulo Amaral; Cerqueira,Mônica Maria Oliveira Pinho; Bordignon-Luiz,Marilde Terezinha. |
ABSTRACT Veterinary drug residues in bulk tank milk are important to all sectors of the dairy chain because they are one of the major factors which determine the safety of the final product. This study attempted to identify milk quality parameters that are associated with the occurrence of veterinary drug residues using multivariate principal component analysis (PCA). A total of 132 raw milk samples were collected from 45 dairy farms in the state of Minas Gerais - Brazil and analyzed for 42 analytes, including pyrethroids, macrocyclic lactones and antibacterials, using liquid chromatography coupled with mass spectrometry in tandem mode and gas chromatography with electron capture detection. Out of the 132 milk samples, 40 samples tested positive for at... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pesticide; Anthelmintic; Antibacterial; Macrocyclic lactone; Food safety. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000300195 |
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Golombieski,Jaqueline Ineu; Marchesan,Enio; Camargo,Edinalvo Rabaioli; Salbego,Joseânia; Baumart,Joele Schmitt; Loro,Vania Lucia; Machado,Sérgio Luiz de Oliveira; Zanella,Renato; Baldisserotto,Bernardo. |
Sublethal adverse effects may result from exposure of aquatic organisms to insecticides at environmentally relevant concentrations. Fingerlings of the common carp (Cyprinus carpio, Linnaeus, 1758), grass carp (Ctenopharyngodon idella, Valenciennes, 1844), and bighead carp (Aristichthys nobilis, Richardson, 1845) were exposed to diafuran, an insecticide widely used during rice cultivation in Southern Brazil. The aim of this study was to verify the relationship between the lethal concentration (LC50) of diafuran and the acetylcholinesterase (AChE) activity in brain and muscle tissues of these species as a possible early biomarker of exposure to this insecticide. LC50 was determined for fish exposed to diafuran concentrations during 96 h (short term): common... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cyprinus carpio; Ctenopharyngodon idella; Aristichthys nobilis; Pesticide; Lethal concentration. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000400003 |
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WANDSCHEER,ALANA C.D.; MARCHESAN,ENIO; TEDESCO,SOLANGE B.; FRESCURA,VIVIANE DAL-SOUTO; SOARES,CAMILLE F.; LONDERO,GUILHERME P.; TELÓ,GUSTAVO M.; HANSEL,DÂMARIS S.S.. |
ABSTRACT Tricyclazole is currently one of the fungicides recommended for the treatment of diseases in irrigated rice. However, there is relatively little information on its cytotoxic and genotoxic potential. The objective of this study was to evaluate the cytotoxicity and genotoxicity of rice crop water after apllication of the tricyclazole fungicide through the Allium cepa L. test. The rice crop water samplings were collected before and 1, 15 and 30 days after application of the fungicide in rice plant shoots. The Allium cepa roots were placed in contact with the rice crop water to check for possible chromosomal abnormalities and mitotic index of the bioindicators meristematic cells. The data obtained by the Allium cepa test indicates that the application... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioindicator; Chromosomal abnormalities; Mitotic index; Pesticide; Irrigated rice. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301251 |
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Picinin,L.C.A.; Toaldo,I.M.; Hoff,R.B.; Souza,F.N.; Leite,M.O.; Fonseca,L.M.; Diniz,S.A.; Silva,M.X.; Haddad,J.P.A.; Cerqueira,M.M.O.P.; Luiz,M.T.B.. |
ABSTRACT The present study attempted to identify climate conditions that are associated with the occurrence of pyrethroid residues using a multivariate principal component analysis (PCA). A total of 132 raw milk samples were collected from dairy farms in Minas Gerais State - Brazil and analyzed for seven analytes using gas chromatography with electron capture detection. Of the 132 milk samples, pyrethroid residues were identified in 14 (10.6%) milk samples, of which 12 (9.1%) and two (1.5%) milk samples had the identification of cypermethrin and deltamethrin, respectively. From those samples, nine (6.8%) milk samples were regarded as non-compliant for cypermethrin with this analyte concentration above the maximum residue limits set by Brazilian... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Veterinary drug; Pesticide; Raw milk; Seasonality; Dairy cow. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000601721 |
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Contreras,H.R.; Paredes,V.; Urquieta,B.; Del Valle,L.; Bustos-Obregón,E.. |
ParathionÒ is an organophosphorate pesticide amply used in agriculture. Many alterations induced by organophosphorate pesticides have been described, such as: cytogenetic alterations in germinal cells, oligozoospermia and teratozoospermia in the mouse. The effect of ParathionÒ, both pure (PP) and commercial (PC), on mouse interstitial cell testosterone production was evaluated in vivo and in vitro. Male mice were intraperitoneally injected with a single dose of 1/3 LD50 of ParathionÒ, both PP and PC. The animals were sacrificed at 1, 8 and 40 days post injection to evaluate the impact of disrupting testosterone production on spermatogonia, spermatocytes and elongated spermatids. The plasma testosterone was assayed by standard radioimmunoanalysis. The same... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Steroidogenesis; Spermatogenesis; Pesticide; ParathionÒ. |
Ano: 2006 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452006000300002 |
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Registros recuperados: 43 | |
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