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	Provedor de dados Planta Daninha (1) Rev. Bras. Ciênc. Solo (1) Autor ABOUZIENA,H.F. (1) Borkert,Clovis Manuel (1) Castro,Cesar de (1) HAGGAG,W.M. (1) Muniz,Antonio Saraiva (1) Oliveira Neto,Waldemar de (1) Silva,Maria Anita Gonçalves da (1) Mais... Palavra-chave Hot water (2) Available boron (1) Mehlich-1 (1) Mehlich-3 (1) Mulch (1) Natural herbicides (1) Non-traditional methods (1) Safety methods (1) Soil analysis (1) Soil solarization (1) Weeds (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2016 (1) 2009 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Weed Control in Clean Agriculture: A Review1 Planta Daninha ABOUZIENA,H.F.; HAGGAG,W.M.. ABSTRACT Weed control is consider the major obstacle for the growers in the organic farming. Lower plant productivity in organic farming mainly related to the poor weed control. It is widely known, in most cases, that losses caused by weeds exceeded the losses from any category of agricultural pests. Under water-stress condition, weeds can reduce crop yields more than 50% through moisture competition alone. In the light of the environmental and toxicological problems created by herbicides, it has become necessary to develop the safety methods for controlling weeds. Soil Solarization, Mulching, Biodegradable Mulch, Natural Herbicides, Hot Water, and Agronomic Practices have been successfully adopted in many countries as safe methods for controlling weeds in... Tipo: Info:eu-repo/semantics/article Palavras-chave: Weeds; Safety methods; Mulch; Soil solarization; Natural herbicides; Hot water; Non-traditional methods. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000200377 Boron extraction and vertical mobility in Paraná State oxisol, Brazil Rev. Bras. Ciênc. Solo Oliveira Neto,Waldemar de; Muniz,Antonio Saraiva; Silva,Maria Anita Gonçalves da; Castro,Cesar de; Borkert,Clovis Manuel. The deficiency or excess of micronutrients has been determined by analyses of soil and plant tissue. In Brazil, the lack of studies that would define and standardize extraction and determination methods, as well as lack of correlation and calibration studies, makes it difficult to establish limits of concentration classes for analysis interpretation and fertilizer recommendations for crops. A specific extractor for soil analysis is sometimes chosen due to the ease of use in the laboratory and not in view of its efficiency in determining a bioavailable nutrient. The objectives of this study were to: (a) evaluate B concentrations in the soil as related to the fertilizer rate, soil depth and extractor; (b) verify the nutrient movement in the soil profile; (c)... Tipo: Info:eu-repo/semantics/article Palavras-chave: Available boron; Hot water; Mehlich-1; Mehlich-3; Soil analysis. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000500019 Registros recuperados: 2 Primeira ... 1 ... Última

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