Embrapa Agrossilvipastoril

Sinop, Brazil

Embrapa Agrossilvipastoril

Sinop, Brazil
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Isernhagen I.,Embrapa Agrossilvipastoril | Moraes L.F.D.,Embrapa Agrobiologia | Engel V.L.,São Paulo State University
Restoration Ecology | Year: 2017

As ecological restoration is gaining importance worldwide, researchers, practitioners, and interested people are beginning to self-organize, in order to exchange knowledge and experiences in this growing area. Latin America has recently shown some examples, and the Brazilian Network for Ecological Restoration (REBRE) is one of them. Working on a nonhierarchical basis, its members, some of whom are important actors in the proposing and implementing of public policies, are able to freely express their doubts and share experiences, thereby contributing to legislative improvements, developing relevant restoration initiatives, and adopting novel approaches and paradigms. Through its three main communication platforms (website, Google Groups, and Facebook), REBRE has reached more than 2,300 members, and although a more equitable distribution through Brazilian regions should still be reached, it is gradually becoming stronger and more representative. In this scenario, REBRE will act with its branch organization, SOBRE (Brazilian Society for Ecological Restoration), to host the next Society for Ecological Restoration Conference, to be held in Brazil, in 2017, exchanging relevant experiences and welcoming restorationists from all over the world. © 2017 Society for Ecological Restoration

Correa P.C.,Federal University of Viçosa | Botelho F.M.,UFMT | Botelho S.C.C.,Embrapa Agrossilvipastoril | Goneli A.L.D.,UFGD
Revista Brasileira de Engenharia Agricola e Ambiental | Year: 2014

The objectives of this study were to evaluate and to model the isotherms curves obtained by adsorption and desorption processes for the fruits of ripe (cherries) coffee (Coffea canephora), for different psychrometric conditions of the air. For all sorption processes, different conditions of temperature (between 10 and 50 °C) and relative humidity (between 10 and 95%) were used, until the product reached its equilibrium moisture content with the air condition specified. For experimental data of sorption, different mathematical models often use to represent hygroscopicity of agricultural products were adjusted. It was verified that the equilibrium moisture content of the fruits of coffee increased with relative humidity for a given temperature and decreased with increasing temperature for a given relative humidity. The hysteresis, regardless of temperature, was more pronounced for relative humidity of the air between 65 and 75%. The Sigma-Copace model was the best in describing hygroscopicity of the fruits of coffee both in desorption and adsorption. © 2014, Departamento de Engenharia Agricola - UFCG/Cnpq. All rights reserved.

Paulino J.,University of Sao Paulo | Zolin C.A.,Embrapa Agrossilvipastoril | Bertonha A.,State University of Maringa | Freitas P.S.L.,State University of Maringa | Folegatti M.V.,University of Sao Paulo
Revista Brasileira de Engenharia Agricola e Ambiental | Year: 2011

This work was conducted in the Cidade Gaúcha PR, with the objective to evaluate the mechanical resistance of soil, the levels of calcium, magnesium, potassium, base saturation in the soil, the roots distribution and yield of sugarcane fertigated with wastewater (stillage) of sugarcane industry for 1, 2, 3, 4, 12 and 20 consecutive years and a control without application. The soil compaction was evaluated with penetrometer cone to 0.50 m depth in intervals of 0.02 m. The results of chemical analysis of soil samples collected between the depths of 0 to 0.20 and 0.20 to 0.40 m were evaluated. The root density was evaluated with the weight of the dry matter of roots with the monolith method retreats to each 0.10 m depths to 0.50 m. The high soil mechanical resistance occurred where wastewater of sugarcane industry was applied for 20 years. The concentration of calcium decreased after two years of application of wastewater, accompanying the fertility of the soils not showing direct connection with the productivity as well as the magnesium. The concentration of the potassium in soil presented linear relation with the productivity. The roots of the sugarcane presented a direct relation with the application time of wastewater of sugarcane industry.

dos Santos H.P.,Embrapa Trigo | Fontaneli R.S.,Embrapa Trigo | Spera S.T.,Embrapa Agrossilvipastoril | Maldaner G.L.,Linha Cinco Irmaos
Pesquisa Agropecuaria Brasileira | Year: 2011

The objective of this work was to assess energy conversion and balance of integrated crop-livestock production systems, under no-tillage. The experiment was carried out from 2001 to 2008. From 2001 to 2002, the following systems were evaluated: 1, wheat/soybean, and black oat pasture+common vetch/corn; 2, wheat/ soybean, and black oat pasture+common vetch+ryegrass/corn; 3, wheat/soybean and black oat pasture+common vetch/millet pasture; 4, wheat/soybean and black oat pasture+common vetch+rygrass/millet pasture; 5, wheat/ soybean, white oat/soybean, and black oat pasture+common vetch/millet pasture; 6, wheat/soybean, white oat/soybean, and black oat pasture+common vetch+rygrass/millet pasture. From 2003 to 2008, the following systems were evaluated: 1, wheat/soybean, and common vetch/corn; 2, wheat/soybean, and black oat pasture/ corn; 3, wheat/soybean, and black oat pasture/soybean; 4, wheat/soybean, and field pea/corn; 5, wheat/soybean, common vetch/soybean, and double purpose triticale/soybean; and 6, wheat/soybean, double purpose white oat/soybean, and double purpose wheat/soybean. Corn showed highest returned energy in comparison to the other grain crops, and to winter and summer annual pastures. Of the winter cover crops and green manure species evaluated, field pea was the most efficient in energy conversion. Systems 1, 2, and 4, from 2003 to 2008, had the most efficient energy balance.

Cunha C.P.,University of Sao Paulo | Hoogerheide E.S.S.,Embrapa Agrossilvipastoril | Zucchi M.I.,Age ncia Paulista de Tecnologia dos Agronegocios | Monteiro M.,Age ncia Paulista de Tecnologia dos Agronegocios | Pinheiro J.B.,University of Sao Paulo
American Journal of Botany | Year: 2012

Premise of the study: A new set of microsatellite or simple sequence repeat (SSR) markers for garlic, an important medicinal spice, was developed to aid studies of genetic diversity and to defi ne effi cient strategies for germplasm conservation. • Methods and Results: Using a (CT) 8 - and (GT) 8 -enriched library, a total of 16 SSR loci were developed and optimized in garlic. Ten loci were found to be polymorphic after screening 75 accessions. The parameters used to characterize the loci were observed and expected heterozygosity, number of alleles, Shannon Index, and polymorphism information content (PIC). A total of 44 alleles were identifi ed, with an average of 4.4 alleles per loci. The vast majority of loci were moderate to highly informative according to PIC and the Shannon Index. • Conclusion: The new SSR markers have the potential to be informative tools for genetic diversity, allele mining, mapping and associative studies, and in the management and conservation of garlic collections. © 2012 Botanical Society of Americal.

Pitta R.M.,Embrapa Agrossilvipastoril | Wruck F.J.,Embrapa Arroz e Feijao
Neotropical Entomology | Year: 2014

We report Paricá as the first host recorded for Mysaromima liquescens Meyrick, and the damaging potential of M. liquescens larvae as borers in Nova Canaã do Norte, state of Mato Grosso, Brazil. © 2014 Sociedade Entomológica do Brasil.

PubMed | Embrapa Arroz e Feijao and Embrapa Agrossilvipastoril
Type: Journal Article | Journal: Neotropical entomology | Year: 2016

We report Paric as the first host recorded for Mysaromima liquescens Meyrick, and the damaging potential of M. liquescens larvae as borers in Nova Cana do Norte, state of Mato Grosso, Brazil.

Zorzeto T.Q.,University of Campinas | Fernandes Junior F.,Embrapa Agrossilvipastoril | Dechen S.C.F.,Instituto Agronomico
Bragantia | Year: 2016

The strawberry, when grown in soil, becomes susceptible to fungi present on it. Rotations of planted areas are essential to control disease, reality unworkable for some Brazilian farmers who have small areas for cultivation. This problem encouraged the use of substrates, a technical pattern already well-established in Europe. The objective was to assess the response of strawberry growth (‘Oso Grande’) on three substrates (granulated coconut fiber, pure rice husk and a mixture of both in equal proportions), volumes (1.0; 1.5 and 2.0 L) and irrigation frequencies (twice, three and four times a day). The experiment was carried out in a greenhouse in Jundiaí (SP), from July 2 to October 4, 2010. The data were submitted to the joint analysis of experiments, in a triple factorial scheme (irrigation frequencies, substrate types and substrate volumes). The best result obtained occurred for substrate mixture, with the irrigation frequency of three times a day, in 1.0 L of the material, with an average yield of 223 g per plant. Rice husk is ineffective for cultivation in pots. Nevertheless, in the form of mixtures, this substrate is suited for cultivation, allowing better results when compared to granulated coconut fiber. © 2016, Instituto Agronomico. All rights reserved.

This study was carried out to characterize species composition and phytosociology of a native forest located at Caracaraí, Roraima, Brazil. All trees with breast diameter (DBH) above 10 cm in nine 1-ha-permanent plots (100 x 100 m each) were inventoried. We observed 4,724 individuals (525 trees per hectare) distributed in 42 families, 111 genera and 165 species. The families with greater number of individuals were Fabaceae (1883), Lecythidaceae (609) and Sapotaceae (434), comprising 52% of the total. The higher densities of individuals were observed in the pioneer (219 trees ha-1), followed by secondary (193 trees ha-1) and climax species (113 trees ha-1). However, species of secondary group had the highest species richness (95), followed by the climax (44) and the pioneer (26). The Shannon diversity index (H' = 3.27) and the value of Pielou equability (J = 0.64) were lower than those obtained in other floristic inventories in the Amazon, because of the high occurrence of Pentaclethra macroloba. The importance values (VI) were higher for Pentaclethra macroloba (52.1), Eschweilera bracteosa (23.7) and Pouteria caimito (8.1). The importance values of these three species alone accounted for 28% of the total VI across species. Most of the individuals (71.3% = 374 trees ha-1) were recorded in the middle stratum (12.4 m < height < 26.5 m) of forest. The forest community can be considered well-structured, mature and diverse, and so it is in good state of conservation.

dos Santos H.P.,Embrapa Trigo | Fontaneli R.S.,Embrapa Trigo | Caierao E.,Embrapa Trigo | Spera S.T.,Embrapa Agrossilvipastoril | Vargas L.,Embrapa Trigo
Pesquisa Agropecuaria Brasileira | Year: 2011

The objective of this work was to assess yield and yield components of wheat cultivated for grain production and for dual-purpose under no-tillage crop-livestock integration systems (CLIS). Grain yield of the two wheat types and yield components for the grain type were evaluated in the 2003 to 2008 growing seasons, in a Rhodic Hapludox, in Coxilha, RS, Brazil, in the following systems: 1, wheat/soybean and common vetch/corn; 2, wheat/soybean and black oat pasture/corn; 3, wheat/soybean and black oat pasture/soybean; 4, wheat/soybean and field pea/corn; 5, wheat/soybean, dual-purpose triticale/soybean, and common vetch/soybean; and 6, wheat/soybean, dual-purpose white oat/soybean, and dual-purpose wheat/soybean. A randomized complete block design, with four replicates, was used. There were no differences between CLIS in yield components (number of spikes, number of grains per spike, and grain mass) of wheat for grain production in differentes CLIS. The systems 2, 3, 4, and 5 showed higher yield of the grain-type wheat in comparison to 6. There are no significant differences in grain yield, hectoliter weight, and weight of 1,000 kernels between wheat cultivated for grain production and for dual-purpose.

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