Data/hora: 21/09/2024 08:18:37

Biblioteca(s): 	Embrapa Agricultura Digital; Embrapa Arroz e Feijão; Embrapa Unidades Centrais.	
Data corrente: 	09/06/2009	
Data da última atualização: 	17/05/2022	
Autoria: 	PINHEIRO, P. V.; QUINTELA, E. D.; OLIVEIRA, J. P. de; SERAPHIN, J. C.	
Afiliação: 	PATRICIA VALLE PINHEIRO, CNPAF; ELIANE DIAS QUINTELA, CNPAF; JAISON PEREIRA DE OLIVEIRA, CNPAF; JOSÉ CARLOS SERAPHIN, UFG.	
Título: 	Toxicity of neem oil to Bemisia tabaci biotype B nymphs reared on dry bean.	
Ano de publicação: 	2009	
Fonte/Imprenta: 	Pesquisa Agropecuária Brasileira, v. 44, n. 4, p. 354-360, abr. 2009.	
DOI: 	https://doi.org/10.1590/S0100-204X2009000400004	
Idioma: 	Inglês	
Conteúdo: 	The objective of this work was to determine the most susceptible nymphal stage of Bemisia tabaci biotype B to neem (Azadirachta indica A. Juss.) oil applied to dry bean (Phaseolus vulgaris L.) in a screenhouse. A solution of commercial oil (Dalneem) extracted from neem seeds was sprayed directly on each nymphal instar at 0, 0.1, 0.25, 0.5, 1 and 2% concentrations for lethal concentration (LC) determination, and at 0, 0.5 and 1% concentrations for lethal time (LT) determination. The number of living and dead nymphs was recorded five days after spraying for LC determination, and daily during six days for LT determination. The LC50 estimated for fourth instar nymphs occurred at 0.56% concentration. For all instars, LC50 and LC95 were estimated at 0.32 and 2.78% concentrations, respectively. The estimated values of LT50 at 1% concentration were 2.46, 4.45, 3.02 and 6.98 days for the first to fourth instars, respectively. The LT50 occurred at five days for 0.5% and at four days for 1% concentration in all instars. A mortality rate of over 80% was observed on the 6th day for the first to third instars at 1% concentration. The first three nymphal stages were more susceptible to neem oil when compared to the fourth nymphal stage.	
Palavras-Chave: 	Concentração letal; Estágio ninfal; Estágios imaturos; immature stages; lethal concentration; mosca-branca; Nim Dalneem; Óleo de nim; whitefly.	
Thesagro: 	Azadirachta Indica; Bemisia Tabaci; Feijão; Mosca Branca; Nim; Phaseolus Vulgaris.	
Categoria do assunto: 	--
O Insetos e Entomologia	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/CNPAF-2009-09/28664/1/44n04a04.pdf
http://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE-2009-09/45889/1/44n04a04.pdf	
Registro original: 	Embrapa Arroz e Feijão (CNPAF)	
Exemplares: 	CNPTIA - (13289-1) - EMB - AP - PP -  -  -  - DIS
AI-SEDE - (45889-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS
CNPAF - (28664-1) - UPC - AP - DD - 2009 -  - 2009 - DIS