Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

You searched for subject:(Scale of note). One record found.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters

1. Marcileyne Pessôa Leite de Lima. Uso de Azadirachta indica A.Juss e Bacillus thuringiensis subsp. aizawai no manejo de Spodoptera frugiperda (J.E. Smith) (Lepidoptera : Noctuidae), na cultura do milho.

Degree: 2008, Universidade Federal Rural de Pernambuco

The synthetic insecticide is the main method used to control Spodoptera frugiperda (J.E. Smith). However, the inadequate application of the insecticide has contributed to increase costs, reduction of the natural enemies, and selection of resistant populations, among other problems. Attempting to obtain alternative control of S. frugiperda more ecologically acceptable, the present work investigated the effects of neem (Azadirachta indica A. Juss) and Bacillus thuringiensis subsp. aizawai (Bta) on S. frugiperda under laboratory, greenhouse and field conditions. In the field, the commercial formulations of Natuneem (10 mL/L in 2005 and 15 mL/L in 2006) and Neemseto (5 and 10 mL/L in 2005, and 10 and 15 mL/L in 2006) and the biological insecticide Xentari (10 g/L in 2005 and 2006) were applied at 15, 30 and 45 and at 15, 25 e 35 days after plant emergency in 2005 and 2006, respectively. Thee evaluations consisted of using a scale of foliar injury from 0 to 5 prior each spray. In 2005, only Neemseto 10 mL/L was efficient at 30 days. In 2006, Neemseto 15 mL/L and Xentari with average score of 0.93 and 0.98, respectively, were different from the control, which produced a score of 2.38 at 35 days after plant emergency. The greenhouse assay consisted of treatment of plants 40-days old with the insecticides Natuneem, Neemseto and Xentari followed by artificial infestation with newly-hatched larvae of S. frugiperda. After 10 days, it was verified that the treatment were equally efficient, differing from the control, regarding to the injury score, as well as, the number of surviving larvae. In the last bioassays, in the laboratory, 10-days old S. frugiperda larvae were fed with corn leaves treated with the insecticides Natuneem, Neemseto and Xentari at 2.5; 5.0; 7.5; 10 mL or g/mL and control (water). The effect of the insecticides increased as function of increasing concentration, causing higher larval mortality, longer period and lower larval weight. In some cases, reduction of pupa weight and viability and longevity of adults were also verified. Larvae 0-24 h old were more susceptible to the insecticides, as compared with 10-days old larvae.

A utilização de inseticidas sintéticos tem sido o principal método de controle de Spodoptera frugiperda (J.E. Smith), mas o uso inadequado tem contribuindo para o aumento do custo de produção, redução de inimigos naturais, seleção de populações resistentes, entre outros problemas. Desta forma, buscando alternativas de controle mais ecológicas, estudou-se no presente trabalho os efeitos de nim (Azadirachta indica A. Juss) e Bacillus thuringiensis subsp. aizawai (Bta) sobre S. frugiperda em experimentos de laboratório, casa de vegetação e campo. Foram testadas em campo formulações comerciais de inseticidas botânicos Natuneem (10 mL/L em 2005 e 15 mL/L em 2006) e Neemseto (5 e 10 mL/L em 2005, e 10 e 15 mL/L em 2006) e do inseticida biológico Bta (Xentari 10 g/L em 2005 e 2006), aplicados aos 15, 30 e 45 e aos 15, 25 e 35 dias após a emergência das plantas em 2005 e 2006, respectivamente.…

Advisors/Committee Members: José Vargas de Oliveira, Jorge Braz Torres, Edmilson Jacinto Marques, Álvaro Aguiar Coelho Teixeira, Valéria Wanderley Teixeira.

Subjects/Keywords: Meliaceae; Lagarta-do-cartucho; Inseticidas botânicos; Inseticida biológico; Bioatividade; Escala de notas; Fall armyworm; Botanical insecticide; ENTOMOLOGIA AGRICOLA; Biological insecticide; Bioactivity; Scale of note

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Lima, M. P. L. d. (2008). Uso de Azadirachta indica A.Juss e Bacillus thuringiensis subsp. aizawai no manejo de Spodoptera frugiperda (J.E. Smith) (Lepidoptera : Noctuidae), na cultura do milho. (Thesis). Universidade Federal Rural de Pernambuco. Retrieved from http://200.17.137.108/tde_busca/arquivo.php?codArquivo=1048

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Lima, Marcileyne Pessôa Leite de. “Uso de Azadirachta indica A.Juss e Bacillus thuringiensis subsp. aizawai no manejo de Spodoptera frugiperda (J.E. Smith) (Lepidoptera : Noctuidae), na cultura do milho.” 2008. Thesis, Universidade Federal Rural de Pernambuco. Accessed October 23, 2020. http://200.17.137.108/tde_busca/arquivo.php?codArquivo=1048.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Lima, Marcileyne Pessôa Leite de. “Uso de Azadirachta indica A.Juss e Bacillus thuringiensis subsp. aizawai no manejo de Spodoptera frugiperda (J.E. Smith) (Lepidoptera : Noctuidae), na cultura do milho.” 2008. Web. 23 Oct 2020.

Vancouver:

Lima MPLd. Uso de Azadirachta indica A.Juss e Bacillus thuringiensis subsp. aizawai no manejo de Spodoptera frugiperda (J.E. Smith) (Lepidoptera : Noctuidae), na cultura do milho. [Internet] [Thesis]. Universidade Federal Rural de Pernambuco; 2008. [cited 2020 Oct 23]. Available from: http://200.17.137.108/tde_busca/arquivo.php?codArquivo=1048.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lima MPLd. Uso de Azadirachta indica A.Juss e Bacillus thuringiensis subsp. aizawai no manejo de Spodoptera frugiperda (J.E. Smith) (Lepidoptera : Noctuidae), na cultura do milho. [Thesis]. Universidade Federal Rural de Pernambuco; 2008. Available from: http://200.17.137.108/tde_busca/arquivo.php?codArquivo=1048

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.