Ação de diferentes preparações de extrato pirolenhoso sobre Brevipalpus phoenicis (GEIJSKES)

Alves, Mariangela; Cazetta, Jairo Osvaldo; Nunes, Maria Andréia; Oliveira, Claudio; Colombi, Carlos Alexandre

doi:10.1590/s0100-29452007000200037

Cited by 13 publications

(14 citation statements)

References 2 publications

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“…Due to the increasing global concern with environmental risks of soil and water contamination, resulting from the use of synthetic agricultural supplies, has being bolstered the industrial production, use and commerce of pyroligneous acid (PA), which has being preconized to plant and soil treatments (Alves et al, 2007;Steiner et al, 2008;Chalermsan;Peerapan, 2009;Schnitzer et al, 2010;Zulkarami et al, 2011;Pedro et al 2012;Rheinheimer et al, 2012), besides other uses (Tiilikkala et al, 2010;Dariot et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Chemical changes in an oxisol treated with pyroligneous acid

2014

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The use of pyroligneous acid (PA), a by-product of charcoal production, is an ancient practice applied in agriculture to control soil and plant pests and diseases. However, little is known about the chemical alterations that this product may cause on treated soil. Thus, the present work aimed to evaluate the effect of PA concentrations on soil ions movement and to verify possible soil chemical properties changes. Detachable columns were filled with Oxisol, submitted to application of 5 PA concentrations (0, 1, 2, 4, 8% v/v), followed by water infiltration in an amount corresponding to 1.5 times the soil total pore volume, and evaluated the soil of four depths (0-10, 10-20, 20-30, 30-40cm) and the leachate. The use of pyroligneous acid in concentrations up to 2 % (v/v) induces only slight decrease of k, Mg, basis saturation and total cation exchange capacity, in the 0-20 cm soil layer. The application of 4 % (v/v) and 8 % (v/v) pyroligneous acid induces severe increase on the potential acidity, and the decrease on the pH, basis saturation, total cation exchange capacity, and Ca concentration, in the layer of 0-20 cm soil. The P and K concentration reduces in the 0-20 cm soil layer by increasing from 1% to 8% the concentration of pyroligneous acid solution applied on soil surface. By increasing the PA concentration applied on the soil, there is increase of acidity, organic matter, P, K, Ca, and Mg, and decrease of sulfate in the leachate.Index terms: Soil fertility, leaching, wood vinegar. RESUMOO uso do extrato pirolenhoso (PA), um produto obtido pela condensação dos gases oriundos da fabricação de carvão vegetal, é uma prática antiga aplicada na agricultura para controlar as pragas e doenças do solo e das plantas. Entretanto, pouco se sabe sobre as alterações químicas que esse produto pode causar no solo tratado. Assim, este trabalho teve o objetivo de estudar o efeito da aplicação de PA na movimentação de íons no perfil do solo e alterações nas suas propriedades químicas. Colunas desmontáveis foram preenchidas com Latossolo e submetidas à aplicação de 5 concentrações de PA (0, 1, 2, 4 e 8 % v/v), seguidas de infiltração com água equivalente a 1,5 vezes o volume dos poros e, posteriormente, analisado o solo de 4 profundidades (0-10, 10-20, 20-30, 30-40 cm), bem como o lixiviado. Verificou-se que a aplicação de 4 %(v/v) e 8 %(v/v) de PA induz aumento na acidez potencial, bem como diminuição do pH, da saturação de bases, da capacidade total de troca de cations e da concentração de Ca na camada de 0-20 cm do solo. A concentração de P e K reduz na camada de 0-20 cm à medida que se aumenta de 1% a 8% a concentração de PA aplicado no solo. Ao aumentar a concentração de PA aplicado ao solo, também ocorre o aumento da acidez, de matéria orgânica, P, K, Ca e Mg, e redução de sulfato no lixiviado. Termos para indexação:Fertilidade do solo, lixiviação, vinagre de madeira.

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Section: Introductionmentioning

confidence: 99%

Chemical changes in an oxisol treated with pyroligneous acid

2014

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“…By contrast, applications in corn led to small variations in soil fertility, being insufficient for changes in plant growth (ALVES et al, 2007). In this study, ex vitro vegetative propagation of O. maculata was favored when 1 mL L −1 pyroligneous liquor was added to irrigation water, being most effective for overall plant development.…”

Section: Figure 1 Protocorms Of Oeceoclades Maculata (Lindl) With Lmentioning

confidence: 84%

“…Pyroligneous liquor is the aqueous fraction of a condensed liquid, brown colored, and composed of at least 80% water and a range of dozens of chemical components, in particular, acetic acid, methyl alcohol, and acetone. This substance from wood carbonization can be used for different purposes in agriculture such as fertilizers, nematicides, fungicides, and insecticides (PEREIRA; SHAITZA; BAGGIO, 2000;SALVATO et al 2007;SAKITA, 2007;ALVES et al 2007).…”

Section: Introductionmentioning

confidence: 99%

PYROLIGNEOUS LIQUOR EFFECT ON IN AND EX VITRO PRODUTION OF Oeceoclades maculata (Lindl). Lindl.1

et al. 2017

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-Pyroligneous fraction from wood carbonization can be used for several purposes. In this sense, this study aimed to test a pyroligneous liquor extracted during carbonization of forest residues for the vegetative development of the orchid Oeceoclades maculata. The concentrations of pyroligneous liquor used in the treatments were T1 = 0 mL L . These treatments were tested together with and without activated charcoal for in vitro and ex vitro propagation. In vitro developed protocorms were assessed according to development or not, the presence of fungus, leaves, and roots. For ex vitro evaluations, leaf size, size, the number of roots, total plant height, and the number of buds were assessed. Possible differences between treatments were tested by means of analysis of variance (ANOVA) and Tukey's test at 5% significance. The use of pyroligneous liquor at low doses was significant in vegetative tissue development as well as for root and leaf formations in O. maculata seedlings since it presents all the essential mineral elements to the structural development of these plants. Keywords:Orchid. Vegetative propagation. Pyroligneous acid. USO DO LICOR PIROLENHOSO NA PRODUÇÃO DE MUDAS IN VITRO E EX VITRO DEOeceoclades maculata (Lindl). Lindl.RESUMO -A fração pirolenhosa obtida com a carbonização da madeira pode ser utilizada para diversos fins. Sendo assim, este trabalho teve por objetivo testar o licor pirolenhoso extraído durante o processo de carbonização de resíduos florestais no desenvolvimento vegetativo da orquídea Oeceoclades maculata. As concentrações do licor pirolenhoso utilizadas nos tratamentos foram: T1 = 0 ml.L -1 , T2 = 1 ml.L -1 , T3 = 2 ml.L -1 , T4 = 3 ml.L -1 , T5 = 4 ml.L -1 e T6 = 5 ml.L -1 , esses tratamentos foram testas com e sem carvão ativado no desenvolvimento in vitro e ex vitro da orquídea. As seguintes características dos protocórmos desenvolvidos in vitro foram avaliadas: com fungo, sem desenvolvimento, em desenvolvimento, presença de folhas e raízes. Para o desenvolvimento ex vitro foram avaliados: Tamanho das folhas, tamanho e número de raízes, altura total da planta, quantidade de gemas. Possíveis diferenças entre os tratamentos foram testada por meio de Análise de variância (ANOVA) e teste de Tukey a 5% de significância. O uso do licor pirolenhoso em dosagem pequenas mostrou-se significativo no desenvolvimento dos tecidos vegetativos e na formação radicular e foliar de Oeceoclades maculata, uma vez que apresenta todos os elementos minerais essenciais ao desenvolvimento estrutural da planta.Palavras-Chave: Orquídea. Propagação vegetativa. Ácido pirolenhoso.

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“…The pyroligneous extract, also known as pyroligneous acid, pyroligneous liquid or wood vinegar, is a natural liquid product obtained by the smoke condensation, from wood carbonization, collected under controlled temperatures (Schwengber et al, 2007;Alves et al, 2007;Silveira, 2010). This liquid is basically made of water (80 to 90%), containing around 200 different compounds, with prominence of acetic acid (8%), methanol (± 2%) and acetone (± 1%) (Zanetti et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Effects of alternative extracts in the agronomic performance of two soybean cultivars

Morell¹,

Pereira²,

Krenchinski³

et al. 2015

Afr. J. Agric. Res.

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The soybean cultivation along the years has required big investments and high technological level to develop new and more productive cultivars. However, the advent of biotic stress, such as diseases, can lead to losses in yield. To attenuate this interference and obtain the expected yield, chemical products have been used to control these diseases. This technique has shown good efficiency in short-term, but can damage the environment and promote the appearance of resistant biotypes in the long-term. So, alternative methods of diseases control, such as pyroligneous extract and the fungus Pycnoporus sanguineus have been used in soybean and other cultures to control diseases without the prior negative aspects of chemical products. The aim of this study was to evaluate possible interferences of these treatments in the agronomic performance of soybean culture. The experiment was conducted in the 2012/2013 harvest, submitting two soybean cultivars to pyroligneous aqueous extract in the 0.6 and 1.3% concentrations and the fungus P. sanguineus extract in the 2.5 and 5% concentrations, thus comparing their results with a positive control and water control treatment. The results showed that the 2.5% fungus concentration statistically reduced the yield of the Turbo RR ® BMX cultivar and the 5% fungus concentration reduced the grain mass of Vmax RR ® NK 7059. The pyroligneous extracts reduced the number of pods of the Turbo RR ® BMX cultivar and the height of Vmax RR ® NK 7059, but did not affect the yield. In either cultivar, the plant growth regulator obtained the best results for all characteristics.

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Ação de diferentes preparações de extrato pirolenhoso sobre Brevipalpus phoenicis (GEIJSKES)

Cited by 13 publications

References 2 publications

Chemical changes in an oxisol treated with pyroligneous acid

Chemical changes in an oxisol treated with pyroligneous acid

PYROLIGNEOUS LIQUOR EFFECT ON IN AND EX VITRO PRODUTION OF Oeceoclades maculata (Lindl). Lindl.1

Effects of alternative extracts in the agronomic performance of two soybean cultivars

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