Diferentes Concentrações de Retardante de Fogo em Plantios de Eucalipto

Canzian, W.P.; Fiedler, N.C.; Brinate, I.B.; Juvanhol, R.S.; Bighi, K.N.

doi:10.14583/2318-7670.v04n04a02

Cited by 9 publications

(15 citation statements)

References 5 publications

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“…The concentration of 0.0100% in all spray volumes was less eff ective than the concentrations of 0.0050 and 0.0075%; in this case, this higher concentration allowed the formation of a gelatinous layer (lumps of gel), (BALENA, 1998) after 1.0 h of application of the product, which in turn, maintained the moisture only in the surface layer of the combustible material. This behavior diff ered from other studies with retardants, in which increasing product concentrations generated greater effi cacy (RIBEIRO et al, 2006;FIEDLER et al, 2015;CANZIAN et al, 2016).…”

Section: Fire Behaviorcontrasting

confidence: 86%

“…with application of retardant (Phos-chek ® ) at a concentration of 13.4% in the spray volume of 1.2 L m -2 , where they obtained fuel material consumed below 2.0% due to the extinction of the fi re in the plots. However, in the application of smaller spray volumes, there was a reduction in the behavior of fi re and a higher percentage of combustible material consumed, as also evidenced by Canzian et al (2016).…”

Section: Survey Of the Remaining And Consumed Fuel Materialsmentioning

confidence: 91%

“…In this context, several methods of direct and / or indirect fi ghting of forest fi res have been developed; in this case, attention is given to chemical fi rebreaks composed of fi re retardants (RIBEIRO et al, 2006;FILHO et al, 2012). The retardants are products associated with water, which inhibit the preheating and ignition of combustible material by conserving moisture for a prolonged period (LIODAKIS et al, 2003;CANZIAN et al, 2016;PLUCINSKI et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…In the indirect fi ght against forest fi res, the retardants available on the market are generally eff ective, but present drawbacks such as environmental impacts, high costs and lack of information regarding concentrations, spray volumes and duration of effi cacy after application (DIETRICH et al, 2014;CANZIAN et al, 2016), associated with the lack of legislation relevant to Brazilian conditions (IBAMA, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Effectiveness of Water-Retaining Polymer as Fire Retardant in Indirect Use

et al. 2020

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The use of fire retardants increases efficiency in fighting forest fires, however, it still presents uncertainties regarding environmental contamination, recommendations for preparation, and it lack of regulation in Brazil. In this scenario, alternative products such as water-retaining polymers, that can reduce the rapid evaporation of water, can also have positive effects in terms of reducing fire behavior. Efficiency and ways of using the water-retaining polymer as a short-duration fire retardant (indirect combat) in controlled burns in eucalyptus plantations were evaluated. Five concentrations (dilution in water), three volumes of spray solution, and two post-application times on the combustible material available in the area were evaluated. Controlled burns were conducted downwind, between 10 am and 2 pm, during dry season in the region, with micrometeorological and fire behavior assessments (fire propagation speed and length of flames). Increased spray volume and concentration of water-retaining polymer led to reductions in the spread of fire. In eucalyptus combustible material, the water-retaining polymer can be used as a fire retardant of short duration (effective up to two hours after application), considering a spray volume of 2.0 L m-2 and concentration of 0.0060% (diluted in water).

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Section: Fire Behaviorcontrasting

confidence: 86%

Section: Survey Of the Remaining And Consumed Fuel Materialsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effectiveness of Water-Retaining Polymer as Fire Retardant in Indirect Use

et al. 2020

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“…De acordo com Canzian et al (2016), o incêndio florestal é um dos maiores causadores de prejuízos no triângulo da sustentabilidade no meio florestal, ou seja, proporciona prejuízos econômicos, sociais e ambientais.…”

Section: Introductionunclassified

Análise Temporal Da Ocorrência De Incêndios Florestais Nas Américas E Região Do Caribe

Silva

Fiedler

Juvanhol

et al. 2018

NAT

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Com as mudanças climáticas ocorridas nas últimas décadas e com longos períodos de estiagem, as chances de ocorrências de fogo com maior frequência e intensidade, aumentam e, sem o devido controle, acabam ocasionando grandes incêndios florestais. Como consequência, pode haver elevados prejuízos ao meio ambiente e à sociedade. Sabendo da importância das estatísticas sobre incêndios florestais, objetivou-se nesta pesquisa, analisar dados estatísticos publicados pela Food and Agriculture Organizacion of the United Nations – FAO, sobre as principais causas, ocorrências e áreas queimadas nas Américas do Norte, Central, Sul e Região do Caribe, no período de 1990 a 2004. Os dados foram tabulados de diferentes maneiras, a fim de produzir uma estatística única, de acordo com a série temporal proposta. Os países da América Central e Caribe são os que menos apresentaram dados disponíveis enquanto que, os Estados Unidos é o que apresenta maior base de dados estatísticos. Os resultados mostraram que a América do Sul tem as maiores médias, em comparação com as demais regiões, os Estados Unidos têm o maior quantitativo de ocorrências, existe forte influência de fenômenos como El Ninõ e que as atividades humanas foram responsáveis pela grande maioria das ocorrências de incêndios florestais.Palavras-chave: proteção florestal, fogo, estiagem. TEMPORAL ANALYSIS OF THE OCCURRENCE OF FOREST FIRES IN THE AMERICAS AND THE CARIBBEAN REGION ABSTRACT:With the climatic changes that occurred in the last decades and with long periods of drought, the chances of occurrences of fire with more frequency and intensity, increase and, without proper control, end up causing forest fires. As a consequence, there can be great damage to the environment and to society. The objective of this research was to analyze statistical data published by the Food and Agriculture Organization of the United Nations (FAO) on the main causes, occurrences and areas burned in North, Central, South and Central America of the Caribbean, from 1990 to 2004. Data were tabulated in different ways to produce a single statistic, according to the proposed time series. Central American and Caribbean countries are the least likely to have available data, while the United States has the largest statistical data base. The results showed that South America has the highest averages compared to the other regions, the United States has the highest number of occurrences, there is a strong influence of phenomena such as El Nino and that human activities were responsible for the great majority of forest fires.Keywords: forest protection, fire, drought.

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FLAME RETARDANTS EFFECTS ON THE INITIAL GROWTH OF Schizolobium amazonicum HUBER EX DUCKE

et al. 2021

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Flame retardants are efficient in fighting wildfire; however, their environmental implications, especially regarding the vegetation, need to be clarified. This work aimed at assessing the effects of flame retardant on the initial growth of Schizolobium amazonicum. Treatments consisted in applying different flame retardant concentrations via substrate and leaf: Phos-Chek WD-881® (0, 3.00, 6.00, 8.00 and 10.00 mL L-1), Hold Fire® (0, 7.00, 9.00, 12.00 and 15.00 mL L-1) and water-retaining polymer Nutrigel® used as alternative retardant (0, 0.25, 0.50, 0.75 and 1.00 g L-1). Growth analyses were carried out to assess the effects of these substances (10 repetitions per treatment). The aliquot of 10.00 mL L-1 of Phos-Chek WD881 applied on the leaves led to an increase of 70% in leaf area and 15% in seedling height. The same Phos-Chek concentration favored height increase (32%) and total dry mass accumulation (33%) throughout time. The concentration of 15 mL L-1 of Hold Fire® applied on leaves, compromised 45% the accumulation of dry biomass in the seedling. Initially, 1.00 g L-1 of Nutrigel® applied via substrate led to an increase of 70% in leaf area, 29% in plant height, and 89% in leaf dry mass. Therefore, Phos-Chek applied on leaves favored shoot growth in S. amazonicum. Hold Fire® applied on leaves impaired biomass accumulation in seedlings. Nutrigel® applied on substrate does not cause long-lasting damage to the initial growth of S. amazonicum. The aliquot of 0.50 g L-1 administered via polymer leave had positive effect on seedling shoot.

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Diferentes Concentrações de Retardante de Fogo em Plantios de Eucalipto

Cited by 9 publications

References 5 publications

Effectiveness of Water-Retaining Polymer as Fire Retardant in Indirect Use

Effectiveness of Water-Retaining Polymer as Fire Retardant in Indirect Use

Análise Temporal Da Ocorrência De Incêndios Florestais Nas Américas E Região Do Caribe

FLAME RETARDANTS EFFECTS ON THE INITIAL GROWTH OF Schizolobium amazonicum HUBER EX DUCKE

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