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Atividade enzimática de solo sob pastagem nativa na sub-região da Nhecolandia, Pantanal Sul Mato-Grossense. Repositório Alice
PELISSARO, H. E. G.; ZANELLA, M. S.; SANTOS, S. A.; CARDOSO, E. L.; MENDES, I. de C.; REIS JUNIOR, F. B. dos; BRASIL, M. S..
O objetivo foi avaliar a atividade enzimática (glicosidase, fosfatase ácida e arilsulfatase) do solo de áreas de pastagens nativas do Pantanal em diferentes estados de conservação (Excelente, Bom e Moderado) e uma área de pastagem sem gado (Reserva). Foi conduzido na fazenda Nhumirim, na sub-região da Nhecolandia, Pantanal Sul MatoGrossense. Classificados em função do percentual de cobertura de forrageiras (CF) e solos Neossolo Quartzarênico.
Tipo: Separatas Palavras-chave: Atividade microbiana; Bioindicadores.; Microbiologia do solo; Perfil do solo; Solo.; Soil biology; Soil enzymes; Pantanal..
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1056812
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Barley seed coating with urease and phosphatase to improve N and P uptake Scientia Agricola
Mvila,Beaufray Gilaime; Pilar-Izquierdo,María Concepción; Busto,María Dolores; Perez-Mateos,Manuel; Ortega,Natividad.
ABSTRACT: In this work, barley seed coating with urease and phosphatase, free and immobilized in humic acids, was studied as a tool to enhance the use efficiency of N and P by plants. The seeds were encapsulated in gels of Ca-alginate by a method that allows gelation of the polymer, containing enzymes, from the surface of seeds outward. The coating process did not affect seed germination. A pot experiment with the coated seeds was carried out. The seed coating with free enzymes increased soil ammonium-N (NH4+-N) and inorganic P up to 39 and 54 %, respectively, and up to 62 and 64 %, with the immobilized enzymes, in comparison with control pots. Seed coating improved N (47-137 %) and P (29-61 %) uptake by plants. Moreover, a synergistic response in N and P...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil enzymes; Seed encapsulation; Plant nutrients uptake; Humic acids.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000601401
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Chemical and biochemical properties of Araucaria angustifolia (Bert.) Ktze. forest soils in the state of São Paulo Rev. Bras. Ciênc. Solo
Carvalho,Fernanda de; Moreira,Fatima Maria de Souza; Cardoso,Elke Jurandy Bran Nogueira.
Araucaria angustifolia, commonly named Araucaria, is a Brazilian native species that is intensively exploited due to its timber quality. Therefore, Araucaria is on the list of species threatened by extinction. Despite the importance of soil for forest production, little is known about the soil properties of the highly fragmented Araucaria forests. This study was designed to investigate the use of chemical and biological properties as indicators of conservation and anthropogenic disturbance of Araucaria forests in different sampling periods. The research was carried out in two State parks of São Paulo: Parque Estadual Turístico do Alto do Ribeira and Parque Estadual de Campos de Jordão. The biochemical properties carbon and nitrogen in microbial biomass...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil quality; Microbial biomass; Soil enzymes; Soil respiration; Microbial metabolic quotient; QCO2.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000400013
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EFFECT OF ARBUSCULAR MYCORRHIZAL FUNGAL INOCULATION ON Eucalyptus globulus SEEDLINGS AND SOME SOIL ENZYME ACTIVITIES UNDER APPLICATION OF SEWAGE SLUDGE AMENDMENT R.C. Suelo Nutr. Veg.
Arriagada,César; Pacheco,Patricio; Pereira,Guillermo; Machuca,Angela; Alvear,Marysol; Ocampo,Juan Antonio.
The sewage sludge (SS) represents a source of organic matter although its increasing accumulation need a suitable environmental treatment. Our study analyzed the effect of the interaction between sewage sludge (doses 0, 2, 4, 6 and 8 g per 100 g of soil) and Eucalyptus globulus nursery seedlings inoculated with arbuscular mycorrhizal (AM) fungi as a fertilizers alternative and evaluate its effect on some soil enzyme activities. The seedlings were inoculated with Glomus claroideum, Glomus viscosum, Glomus intraradices and Glomus constrictum, establishing a uninoculated control. The sewage sludge application increased the shoot dry weight and the inoculation with G. viscosum was more effective at 6 g of SS in 100 g soil. The root colonization and succinate...
Tipo: Journal article Palavras-chave: Biological fertilisers; Glomus; Sewage sludge; Soil enzymes; Symbiosis.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912009000200001
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Effect of compounds on microbiota and yield in two soils. Repositório Alice
VILELA, E. S. D.; OLIVEIRA, R. R.; OLIVEIRA, Q. D. A.; MAY, A..
Abstract: Soybean planting in Itapetininga and Itapeva represents 30% of the state of São Paulo. There are regions where corn and soybean crop rotations are used, stimulating greater biological diversity and chemical quality (conservation technology). The productivity of an area is known to depend on chemical, biological, physical and climatic factors. The aim of this work was to evaluate the effect of the use of organic compounds (OC) taken from healthy soybean plants, in plants cultivated in high and low yield soils.
Tipo: Anais e Proceedings de eventos Palavras-chave: Plant enzymes; Soja; Solo; Composto Orgânico; Rendimento; Extracts; Soybeans; Soil enzymes.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1129462
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Enzymatic activity and mineralization of carbon and nitrogen in soil cultivated with coffee and green manures Rev. Bras. Ciênc. Solo
Balota,Elcio Liborio; Chaves,Julio César Dias.
There are great concerns about degradation of agricultural soils. It has been suggested that cultivating different plant species intercropped with coffee plants can increase microbial diversity and enhance soil sustainability. The objective of this study was to evaluate enzyme activity (urease, arylsulfatase and phosphatase) and alterations in C and N mineralization rates as related to different legume cover crops planted between rows of coffee plants. Soil samples were collected in a field experiment conducted for 10 years in a sandy soil in the North of Paraná State, Brazil. Samples were collected from the 0-10 cm layer, both from under the tree canopy and in-between rows in the following treatments: control, Leucaena leucocephala, Crotalaria...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil enzymes; Mineralization potential; Green manure; Mulching; Nutrient cycling.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000500010
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Intercropping Acacia mangium stimulates AMF colonization and soil phosphatase activity in Eucalyptus grandis Scientia Agricola
Bini,Daniel; Santos,Cristiane Alcantara dos; Silva,Mylenne Calcciolari Pinheiro da; Bonfim,Joice Andrade; Cardoso,Elke Jurandy Bran Nogueira.
ABSTRACT: Arbuscular mycorrhizal fungi (AMF) are very important to plant nutrition, mostly in terms of acquisition of P and micronutrients. While Acacia mangium is closely associated with AMF throughout the whole cycle, Eucalyptus grandis presents this symbiosis primarily at the seedling stage. The aim of this study was to evaluate the dynamics of AMF in these two tree species in both pure and mixed plantations during the first 20 months after planting. We evaluated the abundance, richness and diversity of AMF spores, the rate of AMF mycorrhizal root colonization, enzymatic activity and soil and litter C, N and P. There was an increase in AMF root colonization of E. grandis when intercropped with A. mangium as well as an increase in the activity of acid...
Tipo: Info:eu-repo/semantics/article Palavras-chave: AMF spores; Mycorrhiza; Mixed species; Soil enzymes; Phosphorus.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000200102
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MODIFICATION OF BIOCHEMICAL PROPERTIES BY SOIL USE R.C. Suelo Nutr. Veg.
Trasar-Cepeda,Carmen; Leirós,Maria Carmen; Gil-Sotres,Fernando.
Human activity is one of the main causes of the physical, chemical and biological degradation of soils. This degradation implies a change in soil quality as it involves both a decrease in productivity and changes in the ecological functions of the soil. The objective of the present study was to investigate the effect of soil use on soil biochemical properties, with the aim of providing data that allow assessment of the usefulness of enzymatic activities as indicators of soil quality. In addition to physical and chemical properties, different hydrolase enzymes involved in the C, N, P and S cycles, and other biochemical properties, such as the microbial biomass C and soil basal respiration, were analysed. The results obtained allowed different conclusions to...
Tipo: Journal article Palavras-chave: Soil enzymes; Soil biochemical properties; Soil use; Soil management; Forest soils; Agricultural soils.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912008000200007
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Outstanding impact of soil tillage on the abundance of soil hydrolases revealed by a metagenomic approach. Repositório Alice
SOUZA, R. C.; CANTAO, M. E.; NOGUEIRA, M. A.; VASCONCELOS, A. T. R.; HUNGRIA, M..
Abstract: The soil represents the main source of novel biocatalysts and biomolecules of industrial relevance. We searched for hydrolases in silico in four shotgun metagenomes (4,079,223 sequences) obtained in a 13-year field trial carried out in southern Brazil, under the no-tillage (NT), or conventional tillage (CT) managements, with crop succession (CS, soybean/wheat), or crop rotation (CR, soybean/maize/wheat/lupine/oat). We identified 42,631 hydrolases belonging to five classes by comparing with the KEGG database, and 44,928 sequences by comparing with the NCBI-NR database. The abundance followed the order: lipases > laccases > cellulases > proteases > amylases > pectinases. Statistically significant differences were attributed to the...
Tipo: Artigo de periódico Palavras-chave: Metagenome; Manejo do Solo; Plantio Direto; Microbiologia do Solo; Soil management; Soil enzymes; No-tillage; Metagenomics; Microbiome.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1100838
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Outstanding impact of soil tillage on the abundance of soil hydrolases revealed by a metagenomic approach BJM
Souza,Renata Carolini; Cantão,Maurício Egídio; Nogueira,Marco Antonio; Vasconcelos,Ana Tereza Ribeiro; Hungria,Mariangela.
ABSTRACT The soil represents the main source of novel biocatalysts and biomolecules of industrial relevance. We searched for hydrolases in silico in four shotgun metagenomes (4,079,223 sequences) obtained in a 13-year field trial carried out in southern Brazil, under the no-tillage (NT), or conventional tillage (CT) managements, with crop succession (CS, soybean/wheat), or crop rotation (CR, soybean/maize/wheat/lupine/oat). We identified 42,631 hydrolases belonging to five classes by comparing with the KEGG database, and 44,928 sequences by comparing with the NCBI-NR database. The abundance followed the order: lipases > laccases > cellulases > proteases > amylases > pectinases. Statistically significant differences were attributed to the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Metagenome; Microbiome; Soil enzymes; Soil management; No-tillage.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000400723
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Phosphorus distribution and availability in untreated and mechanically separated biogas digestates Scientia Agricola
Bachmann,Silvia; Uptmoor,Ralf; Eichler-Löbermann,Bettina.
ABSTRACT Biogas digestates contain valuable nutrients but also have high water contents. Di-gestates were sampled from two different biogas facilities before and after solid-liquid separation and were analyzed with regard to their composition and phosphorus (P) fractions. Additionally, to investigate the P fertilizer effects of these digestates in comparison with undigested slurry or TripleSuper-P (TSP), they were applied in a pot experiment (6 kg soil per pot) in an amount corresponding to 200 mg P per pot in combination with various crops (amaranth, maize, maize + beans mixed cropping, sorghum). A separation of digestates resulted in higher P concentrations of the solid fraction in comparison with the liquid fraction. The proportion of the readily...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phosphorus fractions; Anaerobic digestion; Amaranth; Mixed cropping; Soil enzymes.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000100009
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Reclamation status of a degraded pasture based on soil health indicators Scientia Agricola
Santos,Cristiane Alcantara dos; Krawulski,Cristina Célia; Bini,Daniel; Goulart Filho,Tadeu; Knob,Adriana; Medina,Cristiane Conti; Andrade Filho,Galdino; Nogueira,Marco Antonio.
Pasture degradation is a concern, especially in susceptible sandy soils for which strategies to recover them must be developed. Microbiological and biochemical soil health indicators are useful in the guindace of soil management practices and sustainable soil use. We assessed the success of threePanicum maximum Jacq. cultivars in the reclamation of a pasture in a sandy Typic Acrudox in the northwest of the state of Paraná, Brazil, based on soil health indicators. On a formerly degraded pasture withUrochloa brizantha (Hochst. ex A. Rich.) R.D. Webster, a trial with threeP. maximum (cv. Massai, Tanzânia, or Mombaça) was conducted. Lime and phosphate were applied at set-up, and mineral N and K as topdressing. A remnant of degraded pasture adjacent to the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Microbial biomass; Bio-indicators; Soil enzymes; Soil quality; Reclamation of pastures.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000300195
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Soil attributes under different water management systems of rice paddies in the Amazonian Savanna of Brazil. Repositório Alice
EVALD, A.; MELO, V. F.; ROCHA, P. R. R.; CORDEIRO, A. C. C.; MAIA, S. da S.; ESPINDOLA, I. DE C..
The rational use of water while considering the increases in food production is a great challenge for agriculture currently. The aim of the present study was to evaluate the soil properties of rice paddy areas under different water management systems. For this, the rice cultivars BRS Tropical and IRGA 424 were grown under the following treatments: M1: Intermittent flooding; M2: Intermittent flooding, followed by continuous flooding; M3: Continuous flooding, followed by intermittent flooding; and M4: Continuous flooding for the entire plant cycle. As a control, a non-cultivated area, adjacent to the experimental plots was also evaluated. The variables analyzed were P, K+, Ca2+, Mg2+ and Al3+ contents, pH, soil organic carbon (SOC), total nitrogen (TN)...
Tipo: Artigo de periódico Palavras-chave: CO2 efflux; Paddy environment; Soil quality indicators; Soil enzymes.
Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133047
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Soil microbial and chemical properties influenced by continuous cropping of banana Scientia Agricola
Sun,Jianbo; Zou,Liangping; Li,Wenbin; Wang,Yuguang; Xia,Qiyu; Peng,Ming.
ABSTRACT: The impacts of continuous cropping of banana on soil microbiological and biochemical properties are little understood. In this study, we evaluated the variations in soil bacterial community abundance and diversity, microbial biomass carbon (MBC) and nitrogen (MBN) as well as soil enzyme activities involved in C, N and P cycles as affected by continuous cropping of banana. An initial increase in bacterial 16S rRNA copy and soil microbial biomass was observed in the second cropping and then decreased until the fourth cropping. The diversity of bacterial community showed a continuous decrease throughout the experiment. In addition, continuous cropping of banana caused shifts in bacterial community composition and structures. Soil urease and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rhizosphere; Soil bacterial abundance; Bacterial community diversity; Soil microbial biomass; Soil enzymes.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000500420
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Soil quality indicators in a rhodic kandiudult under different uses in northern Parana, Brazil. Repositório Alice
KUWANO, B. H.; KNOB, A.; FAGOTTI, D. S. L.; MELEM JUNIOR, N. J.; GODOY, L.; DIEHL, R. C.; KRAWULSKI, C. C.; ANDRADE FILHO, G.; ZANGARO FILHO, W.; TAVARES FILHO, J.; NOGUEIRA, M. A..
Sustainable use of soil, maintaining or improving its quality, is one of the goals of diversification in farmlands. From this point of view, bioindicators associated with C, N and P cycling can be used in assessments of land-use effects on soil quality. The aim of this study was to investigate chemical, microbiological and biochemical properties of soil associated with C, N and P under different land uses in a farm property with diversified activity in northern Parana, Brazil. Seven areas under different land uses were assessed: fragment of native Atlantic Forest; growing of peach-palm (Bactrys gasipaes); sugarcane ratoon (Saccharum officinarum) recently harvested, under renewal; growing of coffee (Coffea arabica) intercropped with tree species; recent...
Tipo: Artigo de periódico Palavras-chave: Bioindicadores; Biomassa microbiana; Coeficiente metabólico; Enzimas do solo; Qualidade do solo; Uso do solo; Bioindicators; Metabolic coefficient.; Land use; Microbial biomass; Soil enzymes; Soil quality..
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/984910
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Soil quality indicators in a rhodic kandiudult under different uses in northern Parana, Brazil Rev. Bras. Ciênc. Solo
Kuwano,Biana Harumi; Knob,Adriana; Fagotti,Dáfila Santos Lima; Melém Júnior,Nagib Jorge; Godoy,Leandro; Diehl,Raquel Cátia; Krawulski,Cristina Célia; Andrade Filho,Galdino; Zangaro Filho,Waldemar; Tavares-Filho,João; Nogueira,Marco Antonio.
Sustainable use of soil, maintaining or improving its quality, is one of the goals of diversification in farmlands. From this point of view, bioindicators associated with C, N and P cycling can be used in assessments of land-use effects on soil quality. The aim of this study was to investigate chemical, microbiological and biochemical properties of soil associated with C, N and P under different land uses in a farm property with diversified activity in northern Parana, Brazil. Seven areas under different land uses were assessed: fragment of native Atlantic Forest; growing of peach-palm (Bactrys gasipaes); sugarcane ratoon (Saccharum officinarum) recently harvested, under renewal; growing of coffee (Coffea arabica) intercropped with tree species; recent...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioindicators; Land use; Metabolic coefficient; Microbial biomass; Soil enzymes; Soil quality.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000100005
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Sunflower Residue Incorporation Suppresses Weeds, Enhances Soil Properties and Seed Yield of Spring-Planted Mung Bean Planta Daninha
ULLAH,R.; ASLAM,Z.; KHALIQ,A.; ZAHIR,Z.A..
ABSTRACT: Continuous and excessive use of herbicides to control various weed biotypes is posing severe threats to soil and human health. Nevertheless, the strategy of using allelopathic crop residues and water extracts for weed control seems to be a sustainable and friendly option to reduce dependence on synthetic herbicides. In addition to controlling weeds, residues of allelopathic crops positively affected soil health. A two-year field study was carried out to examine the impact of sunflower residues on soil properties, weed dynamics and productivity of mung bean. The study was comprised of five treatments viz., control, sunflower water extracts at 10 and 20 L ha-1, and sunflower residues incorporation at 4 and 6 ton ha-1. Results indicated that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Allelopathy; Soil fertility; Soil enzymes; Crop residues.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100258
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