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| Registros recuperados: 139 | |
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| Silva,Matheus Gustavo da; Arf,Orivaldo; Sá,Marco Eustáquio de; Rodrigues,Ricardo Antônio Ferreira; Buzetti,Salatiér. |
| The adoption of appropriate cultural management, which includes nitrogen fertilization and soil tillage system, is very important to increase the efficiency of plant in the utilization of available resource. This research work was conducted for three years aiming at evaluating the effect of sidedressing nitrogen application (0, 25, 50, 75, and 100 kg ha-1) on winter bean crop under different systems of soil management (conventional, minimal, and no-tillage systems). The experimental design was a randomized block arranged in strips relative to tillage systems, with random distribution of nitrogen doses into each strip, with four replications. Grain yield was affected by nitrogen rates and significant increases were obtained with the application of 75 to 100... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris L.; Moldboard plow; Disk harrow; Nitrogen rates; No-tillage. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000300012 |
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| Aita,Celso; Tonetto,Felipe; Gonzatto,Rogerio; Pujol,Stefen Barbosa; Schirmann,Janquieli; Depoi,Juliano dos Santos; Mezzalira,Ana Paula; Hochscheid,Matheus; Zirbes,Emerson; Giacomini,Sandro José. |
| ABSTRACT: The impact on nitrous oxide (N2O) emissions caused by combining dairy slurry (DS) and urea to supply crops with nitrogen (N) is still not well characterized. The main objective of this study was to compare the differences between N2O emissions in the cases of exclusive use of urea and the combined use of DS and urea as N sources to no-tillage wheat and corn. We also compared N2O emissions between two DS application methods (surface-broadcast vs. injection), as well as the addition of dicyandiamide (DCD) to DS. The experiment was conducted under no-tillage and six treatments were applied at sowing as follows: no fertilization (control), surface-broadcast urea (urea-N), surface-broadcast DS (DSs), surface-broadcast DS with DCD (DSs + DCD),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dicyandiamide; DCD; Slurry injection in soil; No-tillage. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100517 |
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| Mafra,Maria Sueli Heberle; Cassol,Paulo Cezar; Albuquerque,Jackson Adriano; Grohskopf,Marco André; Andrade,Andreia Patrícia; Rauber,Luiz Paulo; Friederichs,Augusto. |
| The use of pig slurry (PS) as fertilizer can affect the soil quality and increase total stocks of soil organic carbon (TOC). However, the effects of PS on TOC amount and forms in the soil are not fully understood, particularly in areas under no-tillage (NT). The purpose of this study was to determine TOC contents and stocks in the particulate (POC) and mineral-associated C fractions (MAC) of an Oxisol after nine years of maize-oat rotation under NT, with annual applications of PS, soluble fertilizer and combined fertilization (pig slurry + soluble fertilizer). The experiment was initiated in 2001 in Campos Novos, Santa Catarina, with the following treatments: PS at rates of 0 (without fertilization - PS0); 25 (PS25); 50 (PS50); 100 (PS100); and 200 m3... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Manure; Swine slurry; Carbon fixation; Soil organic matter; No-tillage. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000401161 |
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| 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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| ALMEIDA,RODRIGO E.M. DE; OLIVEIRA,SILAS M. DE; LAGO,BRUNO C.; P. JUNIOR,CLOVIS; TRIVELIN,PAULO C.O.; FAVARIN,JOSÉ L.. |
| ABSTRACT Corn grain yield, nitrogen (N) fertilizer efficiency and distribution to corn alone and three forms of corn and palisadegrass (Urochloa spp.) intercropping implantation was investigated. A field experiment with 15N labeling fertilizer was performed in randomized block design. No form of palisadegrass intercropping implantation affected corn grain yield, total N accumulation and N use efficiency (NUE), which were 8.7 t ha-1, 205 kg ha-1 and 37% respectively. The palisadegrass produced on average 1.9 t of dry mass, absorbing a maximum of 6 kg ha-1 or 5.5% of N fertilizer during corn growing. Furthermore, the palisadegrass did not affect N fertilizer distribution in soil-plant system, in which 28.2% was recovered in the soil and 40.4% in the plants... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 15N isotope; Crop-livestock integration; Nitrogen use efficiency; No-tillage; Urochloa spp.; Zea mays.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401917 |
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| Silva,Franciani Rodrigues da; Albuquerque,Jackson Adriano; Costa,André da; Fontoura,Sandra Mara Vieira; and,Cimélio Bayer; Warmling,Maria Izabel. |
| ABSTRACT Changes in soil physical properties due to different management systems occur slowly, and long-term studies are needed to assess soil quality. The objectives of this study were to evaluate the effects of soil management systems and liming methods on the physical properties of a Latossolo Bruno Alumínico típico (Hapludox). A long-term experiment that began in 1978 with conventional and no-tillage systems was assessed. In addition, different liming methods (no lime, incorporated lime, and lime on the soil surface) have been applied since 1987 and were also evaluated in this study. Moreover, an area of native forest was evaluated and considered a reference for the natural condition of the soil. Soil physical properties were evaluated in layers to a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: No-tillage; Conventional tillage; Soil structure; Long term. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100501 |
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| Andrade,Andréia Patrícia; Mafra,Álvaro Luiz; Baldo,Gizele Rejane; Piccolla,Cristiano Dela; Bertol,Ildegardis; Albuquerque,Jackson Adriano. |
| Soil is the basis underlying the food production chain and it is fundamental to improve and conserve its productive capacity. Imbalanced exploitation can degrade agricultural areas physical, chemical and biologically. The objective of this study was to evaluate some soil physical properties and their relation with organic carbon contents of a Humic Dystrudept under conventional tillage (CT) and no-tillage (NT), for 12 years in rotation (r) and succession (s) cropping systems. The experiment was carried out in Lages, SC (latitude 27 º 49 ' S and longitude 50 º 20 ' W, 937 m asl), using crop sequences of bean-fallow-maize-fallow-soybean in conventional tillage rotation; maize-fallow in conventional tillage succession; bean-oat-maize-turnip-soybean-vetch in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crop rotation; Crop succession; No-tillage; Soil management. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000100022 |
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| GAZOLA,T.; DIAS,M.F.; DUARTE,A.P.; CARBONARI,C.A.; VELINI,E.D.. |
| ABSTRACT: This work is the first one after the consolidation of the introduction of the RR technology in maize and soybean crops, following weed surveys previously carried out in the region of the Middle Paranapanema, São Paulo state. The objective was to carry out a phytosociological survey of weeds in off-season maize crops no-tillage, in the same properties where the studies had been previously carried out, in the described region, taking into account the management of the weed community adopted by farmers, and the percentage of plant coveron the soil. The surveys were carried out in 19 farms conducted under no-tillage systems, with off-season maize cultivated in soybean succession, both RR crops, in nine municipalities of the São Paulo region of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Herbicides; Weeds; No-tillage; Zea mays. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100313 |
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| ANDRADE, C. M. S. de; ABREU, A. de Q.; ZANINETTI, R. A.; FARINATTI, L. H. E.; FERREIRA, A. S.; VALENTIM, J. F.. |
| Os capins xaraés e piatã são atualmente as duas únicas cultivares de Brachiaria brizantha recomendadas para formação de pastagens no Acre. O capim-xaraés, também conhecido como capim-MG5, é a cultivar mais plantada atualmente no Acre, por sua alta produtividade e boa resistência à síndrome da morte do capim-brizantão (ANDRADE; ASSIS, 2008). Já o capim-piatã é menos resistente a essa doença e tem sido utilizado com sucesso somente em áreas menos sujeitas ao encharcamento do solo (ANDRADE; ASSIS, 2010). |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Boas práticas; Capim Xaraés; Capim Piatã; Palisade signalgrass; Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Siembra directa.; Cero labranza; Pastizales; Pastos forrajeros; Semeadura a lanço.; Capim Brachiaria; Brachiaria brizantha; Plantio direto; Pastagem; Gramínea forrageira; No-tillage; Urochloa brizantha; Forage grasses; Pastures; Direct seeding.. |
| Ano: 2015 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1032779 |
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| CAMPOS, I. S.; GOMES, T. C. de A.; PAZ, F. das C. A.. |
| A doença conhecida como Meia do Feijoeiro", causada pelo fungo de solo (Thanatephorus cucumens), é um dos fatores limitantes da cultura do feijão (Phaseolus vulgaris) na região amazônica. A produtividade obtida no Estado do Acre, nos últimos anos, não ultrapassou 600 Kg/ha. Nesta região, as lavouras tradicionalmente implantadas na segunda quinzena de março e início de abril, geralmente, são atacadas pela "Mela» com perda total da produção. Mesmo quando as plantas chegam a frutificar, os grãos são danificados pela doença. Agricultores que plantam um pouco mais tarde, conseguem colheitas razoáveis. Entretanto, o plantio tardio tem provocado muitas perdas devido a falta de chuvas por ocasião da floração do feijão. Com o impacto da chuva o fungo presente no... |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Mela do feijoeiro; Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Paja de arroz.; Marchitez; Enfermedades y desórdenes de las plantas; Cero labranza; Frijoles; Feijão; Phaseolus vulgaris; Plantio direto; Palha de arroz; Doença de planta; Fungo; Thanatephorus cucumeris; Beans; No-tillage; Rice straw; Plant diseases and disorders; Fungi; Blight.. |
| Ano: 1990 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/492178 |
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| Torres,José Luiz Rodrigues; Pereira,Marcos Gervasio; Rodrigues Junior,Dilson José; Loss,Arcângelo. |
| ABSTRACTThe residues of cover plants and crops left on the soil surface can influence decomposition, nutrient cycling and follow crop yield. The objective was to evaluate the production of dry biomass (BD), of residues decomposition rate and yield of maize and soybean grown on different soil covers. The experimental design was a randomized block scheme banded, with four covers: Brachiaria, sun hemp, pearl millet and fallow period in autumn/winter, with maize and soybean crop in the spring/summer. We evaluated BD, decomposition through bags of decomposition and yield of maize and soybeans. Pearl millet and sunhemp were the covers which produced more of BD in the fall/winter period. the rate of decomposition of plant residues in maize and soybeans is slow in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Intercropping; No-tillage; Productivity; Cerrado. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902015000300451 |
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| Migliorini,Francisco; Soares,André Brugnara; Sartor,Laércio Ricardo; Adami,Paulo Fernando; Pattis,Carlos Alberto; Migliorini,Patrícia. |
| The objective of this work was to evaluate the effect on forage yield of sowing winter forage species before and after soybean harvest, at different nitrogen application levels. The experiment was set out in a randomized block design with a strip-split plot arrangement, and three replicates. Sowing methods (18 days before soybean harvest and six days after soybean harvest) were allocated in the main plots, and the combination among forage species (Avena strigosa cv. IAPAR 61 + Lolium multiflorum; A. strigosa cv. Comum + L. multiflorum; A. strigosa cv. Comum + L. multiflorum + Vicia villosa; A. strigosa cv. Comum + L. multiflorum + Raphanus sativus; and L. multiflorum) and nitrogen levels (0, 140, 280 and 420 kg ha-1) in the plots and subplots,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crop-livestock system; Disking process; Feed gap; No-tillage; Sowing date. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010001000022 |
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| Lima,Carlos Eduardo P; Fontenelle,Mariana R; Ligoski,Gabriela R; Madeira,Nuno R; Oliveira,Valter R; Pinheiro,Jadir B; Gondim,Rubens S; Lima,Mirtes F. |
| ABSTRACT The need to adapt agricultural crops to climate change and to develop more sustainable cultivation systems has been a major challenge for agriculture. In this study the effects of soil conservation practices were evaluated on production aspects of melon (Cucumis melo), cultivar BRS Araguaia, cultivated in a greenhouse under soil and climatic conditions of the Brazilian Cerrado. The adopted experimental design was of randomized blocks with three treatments (soil managements) and six replicates. We evaluated the following soil management systems: no-tillage (PD), minimum tillage (CM) and conventional tillage (PC) in two cycles. Increases in commercial productivity and average number of marketable fruits were observed for PD (61.5 and 61.2 t/ha;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cucumis melo; No-tillage; Minimum tillage; Conventional tillage; Greenhouse. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000400576 |
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| Registros recuperados: 139 | |
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