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ADOPTION OF BIOENGINEERED CROPS AgEcon
Fernandez-Cornejo, Jorge; McBride, William D..
Use of crop biotechnology products, such as genetically engineered (GE) crops with input traits for pest management, has risen dramatically since commercial approval in the mid-1990s. This report addresses several of the economic dimensions regarding farmer adoption of bioengineered crops, including herbicidetolerant and insect-resistant varieties. In particular, the report examines: (1) the extent of adoption of bioengineered crops, their diffusion path, and expected adoption rates over the next few years; (2) factors affecting the adoption of bioengineered crops; and (3) farm-level impacts of the adoption of bioengineered crops. Data used in the analysis are mostly from USDA surveys.
Tipo: Report Palavras-chave: Biotechnology; Technology adoption; Genetic engineering; Pest management; Financial effects; Tillage; Herbicide-tolerant crops; Bt crops; Corn; Soybeans; Cotton; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies.
Ano: 2002 URL: http://purl.umn.edu/33957
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Advances in induced resistance by natural compounds: towards new options for woody crop protection Scientia Agricola
Llorens,Eugenio; García-Agustín,Pilar; Lapeña,Leonor.
ABSTRACT: The activation of defensive responses of plants is a promising tool for controlling pests in conventional agriculture. Over the last few years, several compounds have been studied to protect crops from pests, without displaying direct toxicity for pathogenic organisms. These compounds have the ability to induce a priming state on the plants that results in resistance (or tolerance) against subsequent infection by a pathogen. In terms of molecular response, induced plant defense involves a broad number of physical and biochemical changes such as callose deposition or phenolic compounds, activation of salicylic and/or jasmonic acid pathways or synthesis of defense-related enzymes. Despite the large number of studies performed to ascertain the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Priming; Enhanced resistance; Pest management; Induced systemic resistance; Systemic acquired resistance.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000100090
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Agricultural Resources and Environmental Indicators, 2006 Edition AgEcon
Wiebe, Keith D.; Gollehon, Noel R..
This is a large file. We have had reports of problems opening the file in Mozilla Firefox. If you have problems, try using Windows Internet Explorer.
Tipo: Report Palavras-chave: ERS; AREI; Agricultural economics; Natural resources; Land; Land use; Land values; Land ownership; Water use; Irrigation; Water quality; Genetic resources; Biotechnology; Agricultural research; Agricultural productivity; Global resources; Soil conservation; Soil erosion; Pest management; Nutrient management; Animal agriculture; Organic agriculture; Conventional agriculture; Conservation policy; Land retirement; Working lands; Wetlands; Farmland protection; Environmental quality; Farm structure; Farm ownership; Farm management decisions; Farm business; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2006 URL: http://purl.umn.edu/7207
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Alternative Specifications and Extensions of the Economic Threshold Concept and the Control of Livestock Pests AgEcon
Davis, Rex; Tisdell, Clement A..
Outlines economic threshold models developed by various authors as an aid to decision-making about pest management. Particular attention is given to the models proposed by Stern et al. (1959) and by Headley (1972) and the major differences in their concepts of the economic threshold. Limitations and scope for applying these models is discussed as well as differences in the extent of their applications are reviewed. After considering general issues in this respect, particular matters are given attention such as difficulties raised by complexities in the nature of yield loss function due to uncertainty in pest densities, the presence of multiple-pests, and the occurrence of pesticide resistance. An extension is provided for multiple species pest models to...
Tipo: Working or Discussion Paper Palavras-chave: Pest control; Pest management; Livestock; Livestock Production/Industries.
Ano: 2001 URL: http://purl.umn.edu/48381
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An experimental test of rainfall as a control agent of Glycaspis brimblecombei Moore (Hemiptera, Psyllidae) on seedlings of Eucalyptus camaldulensis Dehn (Myrtaceae) Rev. Bras. entomol.
Oliveira,Karla N.; Jesus,Fabiene M. de; Silva,Jhonathan O.; Espírito-Santo,Mário M. do; Faria,Maurício L..
An experimental test of rainfall as a control agent of Glycaspis brimblecombei Moore (Hemiptera, Psyllidae) on seedlings of Eucalyptus camaldulensis Dehn (Myrtaceae). Glycaspis brimblecombei is one the greatest threats to eucalyptus plantations in Brazil. The effects of rainfall to reduce the abundance of lerp of Glycaspis brimblecombei on experimentally infested seedlings of Eucalyptus camaldulensis were assessed. The number of lerps on the adaxial and abaxial surfaces of every leaf of 60 seedlings was recorded, before and after submission to the following treatments: "artificial rain", "leaf wetting" and control. A drastic reduction in lerp abundance per plant was observed after the treatments "leaf wetting" and artificial rain (F = 53.630; p <...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Herbivory; Pest management; Red gum lerp psyllid.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262012000100016
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Biological Activity of Piper aduncum extracts on Anticarsia gemmatalis (Hübner) (Lepidoptera: Erebidae) and Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) Anais da ABC (AABC)
LUCENA,DAIANE C.; BERTHOLDO-VARGAS,LUCIA R.; SILVA,WILSON C.; MACHADO,AARON F.; LOPES,TAMIRIS S.; MOURA,SIDNEI; BARROS,NEIVA M..
ABSTRACT Piper aduncum found naturally in the Amazon and southeastern Brazil, is known for its secondary metabolites that have activity on insects. Anticarsia gemmatalis and Spodoptera frugiperda are among the major insect pests associated with agricultural production. This research evaluated the biological activity of hexane, ethyl acetate, and ethanol extracts of P. aduncum leaves on mortality and duration of larval and pupal periods, as well as weight, width, and length of A. gemmatalis and S. frugiperda pupae. The mortality of A. gemmatalis larvae in trials with P. aduncum extracts were 93.3% (hexane) and 90% (ethyl acetate), estimating LC50 of 6.35 and 5.79 mg/mL, respectively. Mortality in S. frugiperda submitted to the hexane extract ranged from...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fall armyworm; Velvetbean caterpillar; Pest management; Plant extracts.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401869
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Biological properties of Endophytic Fungi BABT
Sudha,Venkatesan; Govindaraj,Ramar; Baskar,Kathirvelu; Al-Dhabi,Naif Abdullah; Duraipandiyan,Veeramuthu.
The endophytic fungus is have rich source of secondary metabolites which act as biological active agent in the higher plants. The fungal derivatives play vital part in human life and their compounds are the source of drug for cancer, microbial and viral diseases. The natural compounds from the endophytes acts as growth inhibitor of plant pathogenic organism. Endophytes are rich sources of natural products which are used in agriculture (plant growth and insecticidal), pharmaceutical industries and also used for phytoremediation.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Endophytic fungi; Secondary metabolites; Anticancer; Phytoremediation; Pest management.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100413
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Control of silverleaf whitefly, cotton aphid and kanzawa spider mite with oil and extracts from seeds of sugar apple Neotropical Entomology
Lin,Chien-Yih; Wu,Der-Chung; Yu,Jih-Zu; Chen,Bing-Huei; Wang,Chin-Ling; Ko,Wen-Hsiung.
Development of alternative methods for pest management is needed with the increased concern for adverse effects of pesticides for human health and the environment. The main goal of our study was to test the oil from seeds of sugar apple (Annona squamosa), an edible tropical fruit for pest control. The oil pressed out of seeds was as effective in controlling the silverleaf whitefly, Bemisia argentifolii Bellows &amp; Perring (Homoptera: Aleyrodidae), infesting leaves of tomato plants in greenhouse conditions as the recommended insecticide, with the advantage of not being phytotoxic. When observed with a scanning electron microscope, the seed oil caused whitefly nymphs to shrink and detach from the leaf surface. Sugar apple seed oil was also very...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pest management; Non-pesticide control; Annona.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2009000400016
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Controle do ácaro-da-necrose-do-coqueiro. Infoteca-e
OLIVEIRA, J. E. de M.; MELO, J. W. da S.; DOMINGOS, C. A.; GONDIM JÚNIOR. M. G. C..
O coqueiro (Cocos nucifera L.) destaca-se como a palmeira de maior importância agrícola do mundo por causa da grande quantidade de empregos e renda que gera em vários países onde é cultivada. Seus frutos podem ser consumidos in natura ou industrializados na forma de mais de 100 produtos e subprodutos.
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Coqueiro; Áácaro-da-necrose-do-coqueiro.; Coco; Doença; Cocos Nucifera; Planta Oleaginosa.; Pest management.
Ano: 2012 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/930534
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DEVELOPING FLEXIBLE ECONOMIC THRESHOLDS FOR PEST MANAGEMENT USING DYNAMIC PROGRAMMING AgEcon
Harper, Jayson K.; Mjelde, James W.; Rister, M. Edward; Way, Michael O.; Drees, Bastiaan M..
The rice stink bug is a major pest of rice in Texas, causing quality related damage. The previous threshold used for assisting in rice stink bug spray decisions lacked flexibility in economic and production decision variables and neglected the dynamics of the pest population. Using stochastic dynamic programming, flexible economic thresholds for the rice stink bug were generated. The new thresholds offer several advantages over the old, static thresholds, including increased net returns, incorporation of pest dynamics, user flexibility, ease of implementation, and a systematic process for updating.
Tipo: Journal Article Palavras-chave: Economic thresholds; Dynamic programming; Pest management; Rice; Crop Production/Industries.
Ano: 1994 URL: http://purl.umn.edu/15411
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Dispersal of Cotesia flavipes in sugarcane field and implications for parasitoid releases Bragantia
Dinardo-Miranda,Leila Luci; Fracasso,Juliano Vilela; Costa,Viviane Pereira da; Lopes,Diego Olympio Teixeira.
Diatraea saccharalis Fabr. (Lepidoptera: Crambidae) is a major sugarcane pest in Brazil. The management of infested areas is based on the release of Cotesia flavipes (Cameron) (Hymenoptera: Braconidae), a parasitoid of D. saccharalis larvae, but there are doubts about the effectiveness of C. flavipes, primarily regarding its rate of dispersal in sugarcane fields. Thus, the objective of this study was to evaluate the dispersal of C. flavipes in a sugarcane field and suggest a release method that provides higher parasitoid efficiency. The study was carried out in four areas of approximately 1 ha, in which stalk pieces containing 20 D. saccharalis larvae were distributed in a rectangular grid, and 12,000 C. flavipes adults were released at four points, that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sugarcane borer; Diatraea saccharalis; Biological control; Aggregation; Pest management.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052014000200011
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Ecological engineering: a new direction for agricultural pest management AgEcon
Gurr, Geoff M.; Wratten, Steve D.; Altieri, Miguel A..
Ecological engineering has recently emerged as a paradigm for considering pest management approaches that are based on cultural practices and informed by ecological knowledge rather than on high technology approaches such as synthetic pesticides and genetically engineered crops (Gurr et al. 2004a). This article provides a brief summary of ecological engineering for arthropod pest management and contrasts it with its controversial cousin, genetic engineering. The development of ecological engineering is explored, ranging from a simple first approximation that diversity is beneficial, to contemporary understanding that diversity can have adverse effects on pest management. This requires that the functional mechanisms that lead components of biodiversity to...
Tipo: Article Palavras-chave: Ecological engineering; Ecological agriculture; Biological control; Pest management; Farm Management.
Ano: 2004 URL: http://purl.umn.edu/120916
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Economic Evaluation of Forest Pest Management Strategies AgEcon
Berck, Peter; Liebhold, Andrew; Williams, Nancy.
Tipo: Working or Discussion Paper Palavras-chave: Diseases and pests; Forestry; Management; Pest management.
Ano: 1979 URL: http://purl.umn.edu/37704
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Economic Evaluation of Pollination Services Comparing Coffee Landscapes in Ecuador and Indonesia Ecology and Society
Olschewski, Roland; University of Goettingen; rolsche@uni-forst.gwdg.de; Tscharntke, Teja; University of Goettingen; ttschar@gwdg.de; Schwarze, Stefan; University of Goettingen; sschwar1@gwdg.de; Klein, Alexandra-Maria; University of Goettingen; aklein2@gwdg.de.
Tipo: Peer-Reviewed Reports Palavras-chave: Biodiversity conservation; Certified shaded coffee; Environmental services; Pest management.
Ano: 2006
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ECONOMIC RETURNS TO THE BOLL WEEVIL ERADICATION PROGRAM AgEcon
Ahouissoussi, Nicolas B.C.; Wetzstein, Michael E.; Duffy, Patricia A..
The economic viability of the Boll Weevil Eradication program in Alabama, Florida, and Georgia is assessed based on a five-year survey of producers. Results indicate the program increases yield 100 pounds per acre. This implies a 19 percent internal rate of return for producers over a ten year period.
Tipo: Journal Article Palavras-chave: Cotton; Pest management; Regional pest control; Crop Production/Industries.
Ano: 1993 URL: http://purl.umn.edu/15043
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Fertility Life Table, Population Parameters and Biotic Potential of Helicoverpa gelotopoeon (Dyar) (Lepidoptera: Noctuidae) Anais da ABC (AABC)
HERRERO,MARÍA I.; DAMI,LUCIANA C.; FOGLIATA,SOFÍA V.; CASMUZ,AUGUSTO S.; GÓMEZ,DANIEL R. SOSA; GASTAMINZA,GERARDO A.; MURÚA,MARÍA G..
Abstract Helicoverpa gelotopoeon is an endemic pest of South America that affects soybean and other important crops. Life tables are a fundamental tool used to study insect populations, resulting in crucial information for integrated pest management programs. Therefore, the aim of this study was to evaluate the biotic potential and the construction of a life table of this species under laboratory conditions. The biological parameters that showed significant differences between male and female were pupal duration, longevity and life span, which were all longer in duration for males. The net reproductive rate (R0) was 95.49, the mean generation time (T) 37.53, and the instantaneous rate of population increase “r” 0.12. The population doubling time (DT) was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Life cycle; Pest management; Survival; Adult longevity; South American bollworm.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703831
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GENETICALLY ENGINEERED CROPS FOR PEST MANAGEMENT IN U.S. AGRICULTURE AgEcon
Fernandez-Cornejo, Jorge; McBride, William D..
Adoption of genetically engineered crops with traits for pest management has risen dramatically since their commercial introduction in the mid-1990's. The farm-level impacts of such crops on pesticide use, yields, and net returns vary with the crop and technology examined. Adoption of herbicide-tolerant cotton led to significant increase in yields and net returns, but was not associated with significant changes in herbicide use. On the other hand, increase in adoption of herbicide-tolerant soybeans led to small but significant increases in yields, no changes in net returns, and significant decreases in herbicide use. Adoption of Bt cotton in the Southeast significantly increased yields and net returns and significantly reduced insecticide use.
Tipo: Report Palavras-chave: Biotechnology; Genetic engineering; Pest management; Field crops; Input traits; Crop Production/Industries.
Ano: 2000 URL: http://purl.umn.edu/33931
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Grasshopper Population Ecology: Catastrophe, Criticality, and Critique Ecology and Society
Lockwood, Dale R; Colorado State University; dale.lockwood@colostate.edu; Lockwood, Jeffrey A; University of Wyoming;.
Grasshopper population dynamics are an important part of the North American rangeland ecosystem and an important factor in the economies that derive from the rangeland. Outbreak dynamics have plagued management strategies in the rangeland, and attempts to find simple, linear and mechanistic solutions to both understanding and predicting the dynamics have proved fruitless. These efforts to ground theory in a correspondence with the &#8220;real&#8221; world, including whether the population dynamics are ultimately density dependent or density independent, have generated abundant heat but little light. We suggest that a pragmatic approach, in which theories are taken to be &#8220;tools&#8221; rather than competing claims of truth, has greater...
Tipo: Peer-Reviewed Reports Palavras-chave: Catastrophe theory; Complexity science; Grasshoppers; Models; Pest management; Population dynamics; Rangeland ecosystem; Self-organized criticality.
Ano: 2008
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Identification of a novel plant-derived attractant for Acromyrmex lobicornis leaf-cutting ants Anais da ABC (AABC)
ALMA,ANDREA M.; FERNANDEZ,PATRICIA C.; PERRI,DAIANA; BUTELER,MICAELA.
Abstract: Leaf-cutting ants are considered major pests of agriculture and forestry in the Neotropics. Attractive toxic baits are the prevailing method for managing them. Thus, there is great interest in identifying attractants to incorporate into these baits. Moreover, leaf-cutting ants can avoid toxic baits by associating the attractant with the toxin. We evaluated attractiveness of heptyl butyrate, a volatile compound found in fresh apples and plums. We conducted field experiments with ten colonies ofAcromyrmex lobicornis. First, we evaluated the behaviour of ants exposed to heptyl butyrate at 1% by surrounding resources. Then, we compared the attractiveness of heptyl butyrate and orange pulp, the most commonly used attractant. Finally, we evaluated...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acromyrmex lobicornis; Hepyl butyrate; Pest management; Toxic baits; Attractant.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500612
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Improvement of the spray deposition on rice crop International Rice Research Institute
Alam, Murshed.
1 v. (various pagings) : ill. Thesis (Ph.D.) -- Bangladesh Agricultural University
Tipo: Thesis Palavras-chave: Rice; Spraying; Spray deposition; Spraying equipment; Pest management; Pesticides; Application technology.
Ano: 2002 URL: http://hdl.handle.net/123456789/456
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