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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
91

Atividade do inseticida chlorantraniliprole, sobre as principais pragas do tomateiro

Takao, William [UNESP] 28 February 2011 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:29:41Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-02-28Bitstream added on 2014-06-13T18:39:32Z : No. of bitstreams: 1 takao_w_me_ilha.pdf: 277134 bytes, checksum: b8bb935ea70f0a723081fcf7f8c27a77 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / O trabalho teve como objetivo avaliar a atividade de um novo composto inseticida de performance toxicológica favorável (chlorantraniliprole), pertencente ao grupo químico antranilamida, aplicado via “drench” em diferentes doses e em mistura com imidacloprido e tiametoxam, sobre as principais pragas do tomateiro (tripes, mosca-branca, mosca-minadora e traça) em ambiente protegido. O experimento foi conduzido em casa-de-vegetação na Fazenda de Ensino e Pesquisa e Extensão da Faculdade de Engenharia de Ilha Solteira, localizado no município de Ilha Solteira. O delineamento experimental foi blocos casualizados com 10 tratamentos e 4 repetições. Cada parcela constou de uma linha da cultura com 10 plantas, totalizando 6 m2, considerando-se as 8 plantas centrais como área útil. Os tratamentos e doses foram: testemunha não aplicada, chlorantraniliprole nas doses de 20, 40 e 80 g i.a.ha-1, chlorantraniliprole + imidacloprido nas doses de 20 + 210 e 40 + 210 g i.a.ha-1, chlorantraniliprole + tiametoxam nas doses de 20 + 50 e 40 + 50 g i.a.ha-1, imidacloprido na dose de 210 g i.a.ha-1 e tiametoxam na dose de 50 g i.a.ha-1. Foram realizadas 3 aplicações, sendo a primeira no dia do transplantio, a segunda (15 dias após o transplante) e a terceira (30 dias após o transplante). As avaliações foram realizadas aos 5, 10 e 15 dias após a primeira aplicação, aos 5, 10 e 15 dias após a segunda e aos 5, 10, 15, 20 e 25 dias após a terceira aplicação, contando o número de adultos de mosca-branca, Bemisia tabaci, tripes, Frankniella schultzei e folíolos atacados por mosca-minadora, Liriomyza huidobrensise e sintomas de traça, Tuta absoluta, encontrados nos ponteiros de 5 plantas tomadas ao acaso em cada parcela. Ninfas de B. tabaci foram contados em 5 folíolos coletados por parcela. Aos 15 dias após a segunda aplicação... / The objective of this work was to study a new insecticide (chlorantraniliprole), from the diamide nitrilics chemical group, applied in diferents doses, and associated with the neonicotinoide thiamethoxam and imidacloprid applied in the soil (drench), on the control the mains tomate pests. The experimente were conducted in the greenhouse at Farm of UNESP University in Ilha Solteira City. The experimental design was randomized blocks with four replications and ten treataments. Each plot consisted of row one of the crop with tem plants, totality 6m2. The treataments and doses were: untreated, chlorantraniliprole at the doses of 20, 40 and 80 g a.i.ha-1, chlorantraniliprole + imidacloprid at the doses of 20 + 210 and 40 + 210 g a.i.ha-1, chlorantraniliprole + thiamethoxam at the doses of 20 + 50 and 40 + 50 g a.i.ha-1, imidacloprid at the dose of 210 g a.i.ha-1 and thiamethoxam at the dose of 50 g a.i.ha-1. It was accomplished three applications: the first application in the day of seeding transplant, the second (15 days after the transplant) the last application (30 days after transplant). The evaluations were accomplished at 5, 10 and 15 days after the first application, 5, 10 and 15 days after the second application and 5, 10, 15, 20 and 25 days after the last application, counting the Bemisia tabaci adults number, Frankniella schultzei and leaflets with Liriomyza huidobrensise and Tuta absoluta (number of mines encountered in the five leaflets in each plot). For nymphs of B. tabaci were collecteds 5 leaflets per plot, that were transportated at Laboratory for couting under microscope. The 15 days after the second application, was counted the number of plants with symptoms of viral disease, in the 8 plants of central plots. The data obtained were submitted to analysis of variance of F Test, and averages were compared by... (Complete abstract click electronic access below)
92

Characterisation of the proteolytic activity in the digestive system of the field slug Deroceras reticulatum as a target for novel methods of control

Walker, Anthony John January 1997 (has links)
No description available.
93

A comparative study of four species of Encarsia (Hymenoptera: Aphelinidae) as potential control agents for Bemisia tabaci (Gennadius) (Homoptera: Aleyrodidae)

Avila, Aristobulo Lopez January 1988 (has links)
No description available.
94

Growing Grain Sorghum in Arizona

Ottman, Michael J 10 1900 (has links)
3 pp. / Originally published: 2009 / Production practices for grain sorghum are discussed including hybrid selection, planting date, seeding rate, row configuration, irrigation, fertilization, pest control, and harvesting. Grain sorghum (milo) is a warm season, annual grain crop. It is more resistant to salt, drought, and heat stress than most other crops. Nevertheless, highest yields are obtained when stresses are minimized. Revised 10/2016. Originally published 06/2009.
95

Ecological interaction among natural enemies and its consequences for biological control /

Chang, Gary C. January 2000 (has links)
Thesis (Ph. D.)--University of Washington, 2000. / Vita. Includes bibliographical references (leaves 121-139).
96

Factors affecting the establishment of a classical biological control agent, the horehound plume moth (Wheeleria spilodactylus) in South Australia /

Baker, Jeanine. January 2002 (has links) (PDF)
Thesis (Ph.D.)--University of Adelaide, Dept. of Applied and Molecular Ecology, 2002. / Includes bibliographical references (leaves 168-198).
97

Factors influencing the control of citrophilous mealybug Pseudococcus calceolarie (Maskell) by Coccophagus gurneyi Compere in the Riverland of South Australia /

Alfaro Lemus, Ana Lilia. January 2001 (has links) (PDF)
Thesis (M.Ag.Sc.)--University of Adelaide, Dept. of Applied and Molecular Ecology. / Includes bibliographical references (leaves 102-114).
98

An Investigation into the Monitoring of Pest Control Devices using Wireless Communication

Jeffcote, Richard Grant January 2013 (has links)
The monitoring of animal control devices (animal traps) in remote areas currently requires field workers to visit each device on a regular basis, which is costly and time consuming. Better monitoring practices could allow DOC to increase their trapping practices through reduced costs. Essentially, the aim of this paper is to reduce the number of man-hours, and hence resources, required to check each trap. An attempt will be made to use wireless communications to check the status of each trap, and hence decide whether or not it will need to be checked, bringing benefits of efficiency and cost savings to the Department of Conservation. It is recognised that the environment is very difficult for traditional wireless communications to operate reliably and therefore new methods or technologies were investigated for this application. A system operating at 27MHz using a modified pulse position modulation scheme was found to be an appropriate solution; however the success of wireless communications in pest control management is dependent upon the trapping location, patterns and terrain.
99

Woodrat Control in Citrus Groves with Zinc Phosphide and Diphacinone

Kerns, David L., Sullivan, Lawrence M. 11 1900 (has links)
Two studies were conducted investigating the efficacy of Prozap (zinc phosphide), Ramik Green, and Ramik Brown (diphacinone) rodenticides on woodrats infesting citrus. Based primarily on using feeding activity as an indication of population density, Zinc phosphide (ZP) provided a rapid knockdown of the rat population, and offered 60 to 75% control. However, this product is known to cause "bait-shyness" following the initial application so additional control with subsequent applications of ZP targeting the same rat population would not likely result in a significant increase in control. Ramik Green and Ramik Brown are slow acting anticoagulant rodenticides, and performed similarly to each other. Anticoagulant rodenticides are not known to cause bait-shyness. In this study, these products only offered 20 to 38% control, but it is possible that these values may be artificially low since the rats may have been preferentially feeding on stored oat groats used to gauge feeding activity rather than consuming the anticoagulant baits.
100

Pest Management and Yield Enhancement Qualities of Particle Film Technologies in Citrus

Kerns, David L., Wright, Glenn C. 11 1900 (has links)
Surround WP and Snow were evaluated for their ability to manage citrus thrips populations in lemons on the Yuma Mesa, and their impact on lemon yield, fruit quality, and packout. Both Surround and Snow effectively controlled citrus thrips and prevented fruit scarring, but their ability to manage Yuma spider mite was inconclusive. Preference tests indicated that both Surround and Snow act primarily by repelling the thrips, but also induce some mortality. Surround produced higher yields than Snow at the first harvest (#8 ring), but did not differ from the commercial standard. There were no differences in yield among treatments for the strip harvest, nor were their any differences in total yield. These data suggest that Surround may have some yield or increased fruit earliness enhancement qualities and that Snow may be slightly detrimental. There were no statistical differences among any of the treatments in fruit size frequency or quality for any of the harvests, and there was no apparent benefit from applying an additional application of Surround or Snow post thrips season solely for quality, fruit size, or yield enhancement.

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