Publicações - ciências agrárias
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AMERICO, NÚRIA;
LIMA FIGUEIREDO GUIMARÃES EPIFANIO, MARISTELA;
GOMES DE ALMEIDA SOUSA, HYGOR;
BEZERRA DE SOUZA, PRISCILA;
SILVA DA SILVA, FRANCISCA DE CÁSSIA;
Antonio Carlos Batista;
GIONGO, MARCOS
Palavra-chave:
Incêndios florestais;
inflamabilidade;
prevenção de incêndios florestais;
Combustíveis florestais
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Conservação da Natureza; Controle de incêndios florestais;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Silvicultura; Fisiologia Florestal;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Conservação da Natureza; Recuperação de Areas Degradadas
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Fire can cause damage and benefits to an ecosystem, and this relationship is influenced by two main factors: local weather conditions and fuel material characteristics. One of the main factors influencing the combustion process is the flammability of fuels, and its understanding is essential for the prevention of forest fires. Therefore, this study aimed to evaluate the flammability potential of Tabebuia aurea (Silva Manso) Benth. & Hook.f. ex S.Moore, Pseudobombax grandiflorum (Cav.) A. Robyns, Dimorphandra mollis Benth , Chytraculia concinna (DC.) Kuntz, Eriotheca gracilipes (K. Schum.) A. Robyns and Qualea multiflora Mart. of cerrado sensu stricto and to indicate the species with the greatest potential to help prevent forest fires. The work was carried out at the Forest Research Laboratory at the Center for Environmental Monitoring and Fire Management (CeMAF) at the Federal University of Tocantins where flammability tests were conducted to evaluate ignition time, ignition frequency, combustion duration, combustion index and flammability value of the combustible materials, for each species studied, 50 firings were performed in a epiradiator, each burn consisted of 1 ± 0.1 g of green combustible material. Based on the obtained data it was verified that among the studied species the one that showed the highest flammability index was Eriotheca gracilipes, on the other hand, Tabebuia aurea, Pseudobombax grandiflorum and Dimorphandra mollis species are considered to be weakly flammable, classifying them as potential for use in forest fire prevention.
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O uso do fogo pode ocasionar danos e benefícios a um ecossistema, sendo essa relação influenciada por dois fatores principais: condições meteorológicas locais e característica do material combustível. Um dos principais fatores que influenciam o processo de combustão é a inflamabilidade dos combustíveis, sendo considerado essencial a compreensão deste para a prevenção de incêndios florestais. Diante disso este trabalho objetivou avaliar o potencial de inflamabilidade das espécies Tabebuia aurea (Silva Manso) Benth. & Hook.f. ex S.Moore, Pseudobombax grandiflorum (Cav.) A. Robyns, Dimorphandra mollis Benth, Chytraculia concinna (DC.) Kuntz, Eriotheca gracilipes (K. Schum.) A. Robyns and Qualea multiflora Mart. do cerrado sensu stricto e indicar as espécies com maior potencial para auxiliar na prevenção de incêndios florestais. O trabalho foi realizado no Laboratório de Pesquisas Florestais no Centro de Monitoramento Ambiental e Manejo do Fogo (CeMAF) na Universidade Federal do Tocantins onde os testes de inflamabilidade foram conduzidos para avaliação do tempo para ignição, da frequência de ignição, duração da combustão, índice de combustão e valor de inflamabilidade dos materiais combustíveis, sendo que para cada espécie estudada, foram efetuadas 50 queimas em epirradiador, cada queima foi constituída de 1 ± 0,1 g de material combustível verde. Com base nos resultados verificou-se que dentre as espécies estudadas a que demonstrou maior índice de inflamabilidade foi a Eriotheca gracilipes, por outro lado, identificou-se que as espécies Tabebuia aurea, Pseudobombax grandiflorum e Dimorphandra mollis são consideradas como fracamente inflamáveis, classificando-as como potenciais para uso na prevenção de incêndios florestais.
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Melrian Schetz;
Mariane Bueno de Camargo;
REZENDE, EDUARDO HENRIQUE;
Diego Tyszka Martinez;
Nilton José Sousa
Scientia Forestalis,
v. 49,
p. 1-12,
2021
Palavra-chave:
herbicidas;
Mistura de Herbicidas;
Mistura de Tanque
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Tecnologia de Alimentos;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Silvicultura; Fisiologia Florestal;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Silvicultura; Manejo Integrado de Plantas Infestantes
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Setsuo Iwakiri;
TRIANOSKI, ROSILANI;
ZUNTA, RENAN RAIA;
PEREIRA, GIULIANO FERREIRA;
ROSA, THIAGO SOUZA
Palavra-chave:
Acetato de polivinila;
emulsão polimérica de isocianato;
cisalhamento da linha de cola
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Tecnologia e Utilização de Produtos Florestais; Tecnologia de Chapas
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FELIX, FRANCIVAL CARDOSO;
MATOS, DANIELE CRISTINA PEREIRA DE;
LATOH, LEANDRO PORTO;
MAGGIONI, RENATA DE ALMEIDA;
Antonio Carlos Nogueira
Palavra-chave:
Rizobactéria;
produção de mudas;
Raizes secundárias;
fisiologia de semente
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Sementes Florestais;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Produção de mudas florestais
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Inoculation of rhizobacteria in seeds and plants has been documented as a stimulant and promoter of germination and growth of agricultural crops, but there is little information on native forest species. Therefore, the present study aims to evaluate the potential of Azospirillum brasilense inoculation in the germination of seeds and initial growth of seedlings of native forest species. The following experiments were carried out: (I) germination of seeds in germination chamber, and (II) initial growth of seedlings in nursery, both with four forest species ( Cassia leptophylla , Lafoensia pacari , Mimosa flocculosa and Schinus terebinthifolius ). For the four species, in both experiments, two treatments were used: inoculation of seeds with concentrated solution of A. brasilense and no inoculation of seeds (control). Physiological aspects of seed germination and seedling vigor were evaluated in the first experiment (germination speed, and length and dry weight of seedlings), and seedling growth was evaluated in the second experiment (height, collar diameter and dry weight of seedlings). Inoculation of A. brasilense in seeds of C. leptophylla , L. pacari , M. flocculosa and S. terebinthifolius did not promote beneficial or promising results for seed germination and initial growth of seedlings, so its use to produce seedlings of these species is not recommended.
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GUÉRIOS, INÊS THOMAZ;
CUQUEL, FRANCINE LORENA;
Luis Antonio Biasi
Palavra-chave:
Videira;
Ensacamento;
Cobertura plástica
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Fitotecnia; Manejo e Tratos Culturais
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Vineyards of ‘Niagara Rosada’ have shown great productive potential. However, the grape production has been affected by factors related to climate adversities. Thus, this study aimed to evaluate the effect of plastic cover and bagging of bunches of ‘Niagara Rosada’, in Almirante Tamandaré, PR, Brazil. Plastic cover used was of polyethylene with 250 µm of thickness and bagging of the bunches with white non-woven fabric bags. The treatments were: without plastic cover over the vineyard and without bagging of bunches (control); with plastic cover over the vineyard and without bagging of bunches; with plastic cover over the vineyard and with bagging of bunches; and without plastic cover over the vineyard and with bagging of bunches. To determine the quality of the grapes, we evaluated weight of the bunches and berry, width and length of the bunch, number of berries per bunch, total soluble solids (SS), titratable acidity (TA), pH, and SS/TA ratio. In both crop seasons, treatments with the protected plants or bunches were superior in all evaluated traits. The plastic cover and bagging of bunches delayed maturation and improved the physical and chemical characteristics of bunches and berries of ‘Niagara Rosada’.
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Os vinhedos de ‘Niagara Rosada’ têm mostrado grande potencial produtivo. No entanto, a produção da uva tem sido afetada por fatores relacionados a adversidades climáticas. Assim, este trabalho teve como objetivo avaliar o efeito da cobertura plástica e do ensacamento dos cachos de ‘Niagara Rosada’ em Almirante Tamandaré, PR, Brasil. A cobertura plástica utilizada foi de polietileno com espessura de 250 µm e o ensacamento dos cachos com tecido não texturizado (TNT) de cor branca. Os tratamentos foram: sem cobertura plástica do vinhedo e sem ensacamento dos cachos (Testemunha), com cobertura plástica do vinhedo e sem ensacamento dos cachos, com cobertura plástica do vinhedo e com ensacamento dos cachos e sem cobertura plástica do vinhedo e com ensacamento dos cachos. Para determinação da qualidade das uvas, avaliou-se massa dos cachos e bagas, largura e comprimento do cacho, número de bagas por cacho, teor de sólidos solúveis (SS), acidez titulável (AT), pH e relação SS/AT. Em ambas as safras, os tratamentos com proteção das plantas ou cachos apresentaram superioridade em todas as características avaliadas. A cobertura plástica e o ensacamento dos cachos atrasaram a maturação e melhoraram as características físicas e químicas dos cachos e bagas da uva ‘Niagara Rosada’.
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ZILLI RUIZ, EMÍLIO CARLOS;
Afonso Figueiredo Filho;
BEHLING, ALEXANDRE;
RETSLAFF GUIMARÃES, FABIANE APARECIDA;
DE ABREU NETO, RAUL
Palavra-chave:
Biomass;
bioenergy;
Energetic properties;
calorific value;
Co-produt
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Manejo Florestal; Dendrometria e Inventário Florestal;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Mensuração Florestal;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Energia de Biomassa Florestal
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Nocy Bila;
Alessandro Camargo Angelo;
Roman Carlos Rios;
Christopher Thomas Blum;
Alexandre Behling
Palavra-chave:
Restauração ecológica;
Restauração florestal;
Especies arboreas nativas;
Espécies arbóreas alternativas;
planície litorànea;
Floresta ombrófila densa
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Tecnologia de Alimentos;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Silvicultura; Fisiologia Florestal;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Conservação da Natureza; Recuperação de Areas Degradadas
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SOARES, STALLONE DA COSTA;
BARIZÃO, CAROLINE SILVANO;
Vezzani, Fabiane Machado;
Favaretto, Nerilde;
CHEROBIM, VEREDIANA FERNANDA;
Jeferson Dieckow;
Volnei Pauletti;
BARTH, GABRIEL
Palavra-chave:
animal manure;
epiedaphic fauna;
microbial biomass;
microbial quotient;
microbial respiration;
Pielou
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Agronomia; Ciência do Solo; Manejo e Conservação do Solo;
CIENCIAS_AGRARIAS; Agronomia; Ciência do Solo; Microbiologia e Bioquímica do Solo
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Context Organic amendments in agricultural systems benefit the soil biota; however, their consecutive use can interfere negatively with the biota diversity and functionality.Aims This study evaluated the biomass and microbial activity and the epiedaphic fauna response of soil with consecutive liquid cattle manure (LCM) addition (4 years) in no-tillage.Methods The experiment was run in two Oxisol textures: sandy clay loam and clayey. The treatments were the control (un-manured) and three LCM doses: 60, 120 and 180 m−3 ha−1 year−1, distributed in a completely randomised block design with four replications. Microbial biomass carbon (MBC), soil microbial respiration (SMR), and microbial quotient (qMIC) were performed in the 0–5cm layer. The epiedaphic fauna was captured by traps and abundance and ecological indices were evaluated in spring and autumn seasons.Key results In sandy clay loam soil, the MBC and SMR increased up to 180 m−3 ha−1 year−1 in both spring and autumn, while in clayey soil, only the SMR increased up in the spring. The most representative groups of the epiedaphic fauna were Collembola, Acarine, Coleoptera, and Hymenoptera. The Collembola population was predominant in both soils and seasons.Conclusions Consecutive annual applications of LCM in no-tillage had a greater positive impact in the soil biota in the sandy clay loam soil and in the spring season and did not negatively affect the ecological functioning of the soil biota system.Implications Application of liquid cattle manure may be beneficial for the sustainability of the agroecosystem and as a highly available and low-cost waste, it may be an alternative for replacing chemical fertilisers.
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SOARES, STALLONE DA COSTA;
BARIZÃO, CAROLINE SILVANO;
Fabiane Machado Vezzani;
Favaretto, Nerilde;
CHEROBIM, VEREDIANA FERNANDA;
DIECKOW, JEFERSON;
Volnei Pauletti;
BARTH, GABRIEL
Palavra-chave:
atividade biológica do solo;
rotação de culturas;
resíduo orgânico
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Agronomia; Ciência do Solo; Manejo e Conservação do Solo
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Context Organic amendments in agricultural systems benefit the soil biota; however, their consecutive use can interfere negatively with the biota diversity and functionality.Aims This study evaluated the biomass and microbial activity and the epiedaphic fauna response of soil with consecutive liquid cattle manure (LCM) addition (4 years) in no-tillage.Methods The experiment was run in two Oxisol textures: sandy clay loam and clayey. The treatments were the control (un-manured) and three LCM doses: 60, 120 and 180 m−3 ha−1 year−1, distributed in a completely randomised block design with four replications. Microbial biomass carbon (MBC), soil microbial respiration (SMR), and microbial quotient (qMIC) were performed in the 0–5cm layer. The epiedaphic fauna was captured by traps and abundance and ecological indices were evaluated in spring and autumn seasons.Key results In sandy clay loam soil, the MBC and SMR increased up to 180 m−3 ha−1 year−1 in both spring and autumn, while in clayey soil, only the SMR increased up in the spring. The most representative groups of the epiedaphic fauna were Collembola, Acarine, Coleoptera, and Hymenoptera. The Collembola population was predominant in both soils and seasons.Conclusions Consecutive annual applications of LCM in no-tillage had a greater positive impact in the soil biota in the sandy clay loam soil and in the spring season and did not negatively affect the ecological functioning of the soil biota system.Implications Application of liquid cattle manure may be beneficial for the sustainability of the agroecosystem and as a highly available and low-cost waste, it may be an alternative for replacing chemical fertilisers.
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BILA, NARCISO F;
TRIANOSKI, ROSILANI;
Setsuo Iwakiri;
EGAS, ANDRADE F.;
MANHIÇA, ALBERTO A.;
DA ROCHA, MÁRCIO P.
Palavra-chave:
Bonding quality;
edge glued panel;
polyvinil acetate;
Wood bonding
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Tecnologia e Utilização de Produtos Florestais; Tecnologia de Chapas
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