Data/hora: 21/09/2024 12:20:40

Biblioteca(s): 	Embrapa Cerrados; Embrapa Pantanal; Embrapa Soja; Embrapa Uva e Vinho.	
Data corrente: 	16/08/1993	
Data da última atualização: 	21/12/2011	
Autoria: 	SOUZA, I. F. de.	
Título: 	Effects on growth and yield of soybeans from interactions of sequential herbicide applications.	
Ano de publicação: 	1981	
Fonte/Imprenta: 	West Lafayette: Purdue University, 1981.	
Páginas: 	111p.	
Idioma: 	Inglês	
Notas: 	Ph.D. Thesis.	
Conteúdo: 	Field and greenhouse studies were conducted in two years to evaluate the effects of several pre-plant incorporated and postemergent herbicides applied alone and in sequence upon growth parameters of soybeans [Glycine max (L.) Merr. Amsoy 71]. In general, the greenhouse and field data supported  each other. All PPI treatments oversprayed with the post-emergent 2,4-DB reduced yield when compared with the PPI's alone. All yield reductions were additive effects, except bifenox at 1.12 kg/ha plus 2,4-DB and vernolate at 3.36 kg/ha plus 2,4-DB. A significant reduction in pods dry weight a thirty-eight days after planting did not correlate with the yields (ninety-eight days later), although all significant yield reductions were precede by significant reductions in pods dry weight. Bifenox at 0.56 kg/ha over sprayed with acifluorfen at 0.56 kg/ha increased leaf area, leaf dry weight, support tissue dry weight, and yield (antagonistic effects). Of the postemergent treatments, bentazon gave the least interaction showing only significant decrease in leaf area and support tissue dry weight with the PPI treatments of vernolate at 3.36 and 5.04 kg/ha; at 5.04 kg/ha it also significantly decreased pods dry weight. After bentazon, came acifluorfen followed by dinoseb + naptalam with no significant yield reduction. Dinoseb + naptalan significantly reduced several parameters including pods dry weight and leaf area when applied over all PPI treatments at the two highest rates. Aciflourfen on the other hand only significantly reduced the growth parameters, other than leaf area, when applied over vernolate at  3.36 and 5.04 kg/ha. The greenhouse results indicated that 2,4-DB applied at 1-trifoliate stage of soybeans reduced several growth parameters when compared with 2,4-DB applied ten days later (3-trifoliate). Vernolate at 3.36 and 5.04 kg/ha reduced chloroform soluble extraction of the soybean laves, under field and greenhouse condictions.	
Palavras-Chave: 	Aplicacao; Growth; Herbicide; Pathology; Patologia; Plant; Soybean.	
Thesagro: 	Agrotóxico; Botânica; Crescimento; Glycine Max; Herbicida; Planta; Rendimento; Soja.	
Thesaurus Nal: 	botany; herbicides; plant pathology; soybeans; yields.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Cerrados (CPAC)	
Exemplares: 	CNPSO - (21792-1) - ADD - TS - -- - 25/81 -  - 25/81 - DIS
CNPUV - (1757-1) - ADD - TS - PP - TS00156 -  - TS00156 - DIS
CPAC - (16168-1) - ADD - TS - -- - T035/81 - SOU - T035/81 - DIS
CPAP - (33260-1) - ADP - TS - PP - TS90.00022 -  - 1990.00022 - DIS