Data/hora: 20/06/2024 03:52:23

Biblioteca(s): 	Embrapa Milho e Sorgo.	
Tipo da produção científica: 	Artigo em Periódico Indexado	
Data corrente: 	11/09/1997	
Data da última atualização: 	21/07/2018	
Autoria: 	CRUZ, I.; TURPIN, F. T.	
Afiliação: 	IVAN CRUZ, CNPMS.	
Título: 	Yield impact of larval infestation of the fall armyworm (Lepidoptera: Noctuidae) to Midwhorl growth stage of corn.	
Ano de publicação: 	1983	
Fonte/Imprenta: 	Journal of Economic Entomology, College Park, v. 76, n. 5, p. 1052-1054, 1983.	
Idioma: 	Inglês	
Conteúdo: 	Egg masses of fall armyworm, Spodoptera frugiperda (J. E. Smith), were artificially placed on corn at the midwhorl growth stage. Levels of infestation tested included egg masses on 5, 10, 15, 20, and 100% of the plants. Population were assessed by leaf damage ratins. Yield parameters of grain weight, ear lenght, kernel number, ear damage, number ofdamaged kernels, and weight of 100 kernels were measured. Significant yield losses of 17% were sustained when 20 or 100% of the plants received egg masses. The relationships of leaf damage ratings and yield was liner and inverse. Yield losses were directly related to reduction in kernel number on ears from infested plants.	
Palavras-Chave: 	Infestation; Pest.	
Thesagro: 	Crescimento; Infestação; Milho; Praga; Zea Mays.	
Thesaurus Nal: 	developmental stages; Lepidoptera.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Milho e Sorgo (CNPMS)	
Exemplares: 	CNPMS - (5110-1) - UPC - AP - DD -  -  -  - DIS