Data/hora: 14/06/2024 19:31:01

Biblioteca(s): 	Embrapa Gado de Leite.	
Data corrente: 	10/01/2020	
Data da última atualização: 	06/02/2024	
Autoria: 	ALVARENGA, R.; AUAD, A. M.; MORAES, J. C.; SILVA, S. E. B. DA; RODRIGUES, B. S.	
Afiliação: 	Roberta Alvarenga; ALEXANDER MACHADO AUAD, CNPGL; Jair Campos Moraes; Sandra Elisa Barbosa da Silva; Brunno Santos Rodrigues.	
Título: 	Tolerance to nymphs and adults of Mahanarva spectabilis (Hemiptera: Cercopidae) by forage plants in fertilized soils.	
Ano de publicação: 	2019	
Fonte/Imprenta: 	Pest Management Science, v. 75, n. 8, p. 2242-2250, 2019.	
DOI: 	https://doi.org/10.1002/ps.5361	
Idioma: 	Inglês	
Conteúdo: 	BACKGROUND -Several factors may degrade pastures, in particular, inadequate nutrient application and spittlebug attacks. Mahanarva spectabilis (Distant, 1909) (Hemiptera: Cercopidae), one of the species that occur in Brazil, is a limiting pest in forage production. This study analyzes the influence of fertilization with the macronutrients nitrogen, phosphorus and potassium (NPK) on the survival of M. spectabilis nymphs, and the effects of damage by nymphs and adults on the production, quality and regrowth capacity of the forages Brachiaria ruziziensis, Pennisetum purpureum and Digitaria sp. RESULTS-Fertilization of the forages differentially affected damage due to spittlebug herbivory. Attacks by nymphs and adults decreased chlorophyll content, plant regrowth and forage quality, and increased injury, regardless of fertilization. The availability of nutrients in the soil not only decreased fiber content, but also increased crude protein, chlorophyll content and regrowth, even when pest infested. Soil fertilization increased the capacity of forage plants to lessen, albeit not eliminate, the effects of injury by M. spectabilis. CONCLUSION-Forages in fertilized soil are more tolerant to attacks by M. spectabilis nymphs and adults.	
Palavras-Chave: 	Pasture; Plant resistance; Spittlebugs.	
Thesagro: 	Npk.	
Categoria do assunto: 	O Insetos e Entomologia	
Registro original: 	Embrapa Gado de Leite (CNPGL)	
Exemplares: 	CNPGL - (24963-1) - UPC - AP - DD -  -  -  - DIS