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| Registros recuperados: 4.346 | |
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| ALCÂNTARA,FLÁVIA APARECIDA DE; FURTINI NETO,ANTONIO EDUARDO; PAULA,MIRALDA BUENO DE; MESQUITA,HUGO ADELANDE DE; MUNIZ,JOEL AUGUSTO. |
| O experimento foi conduzido na Fazenda Experimental Nova Baden, da Empresa de Pesquisa Agropecuária de Minas Gerais (EPAMIG), em Lambari, MG, objetivando avaliar o desempenho dos adubos verdes guandu (Cajanus cajan (L.) Millsp.) e crotalária-júncea (Crotalaria juncea L.), com e sem incorporação da biomassa, na recuperação da fertilidade de um solo (Latossolo Vermelho-Escuro distrófico) degradado, cultivado com braquiária (Brachiaria decumbens Stapf.). Empregou-se o delineamento experimental de blocos casualizados em esquema fatorial de parcelas subdivididas, com três repetições, colocando-se nas parcelas o manejo da biomassa, e nas subparcelas, as leguminosas e a braquiária. As três culturas foram manejadas na fase final de florescimento das leguminosas,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adubo verde; Cajanus cajan; Crotalaria juncea; Manejo da biomassa. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2000000200006 |
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| Radwan,Tharwat El-Sayed El-Desouk; Mohamed,Zeinat Kamel; Reis,Veronica Massena. |
| Foi analisada a produção de compostos indólicos por Azospirillum brasilense Cd, A. lipoferum Br 17, Herbaspirillum seropedicae Z 67, H. rubrisubalbicans M4 e a estirpe 34 isolada de arroz, que não se enquadra em nenhuma das espécies de Herbaspirillum já descritas, em relação a diferentes condições de aeração e concentrações de sais. A maior aeração do meio propiciou aumento na produção de compostos indólicos pelas bactérias testadas. Foi verificado aumento desses compostos, em culturas estáticas, em meio sem nitrogênio no caso de Azospirillum, e na presença de N para as estirpes de Herbaspirillum. O aumento da concentração de sais no meio de cultivo inibiu a produção de compostos indólicos, embora tenha sido observado um pequeno aumento quando a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Azospirillum; Herbaspirillum; Auxina; Ácido-3-indol acético; Compostos indólicos. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005001000008 |
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| Avanzi,Junior Cesar; Norton,Lloyd Darrell; Silva,Marx Leandro Naves; Curi,Nilton; Oliveira,Anna Hoffmann; Silva,Mayesse Aparecida da. |
| The objective of this work was to evaluate the aggregate stability of tropical soils under eucalyptus plantation and native vegetation, and assess the relationships between aggregate stability and some soil chemical and physical properties. Argisols, Cambisol, Latosols and Plinthosol within three eucalyptus-cultivated regions, in the states of Espírito Santo, Rio Grande do Sul and Minas Gerais, Brazil, were studied. For each region, soils under native vegetation were compared to those under minimum tillage with eucalyptus cultivation. The aggregate stability was measured using the high-energy moisture characteristic (HEMC) technique, i.e., the moisture release curve at very low suctions. This method compares the resistance of aggregates to slaking on a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eucalyptus sp.; High-energy moisture characteristic curve; Forest systems; Tropical soils. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000100012 |
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| Loss,Arcângelo; Pereira,Marcos Gervasio; Giácomo,Simone Guimarães; Perin,Adriano; Anjos,Lúcia Helena Cunha dos. |
| O objetivo deste trabalho foi avaliar a estabilidade dos agregados, o conteúdo de matéria orgânica leve do solo (MOL), a distribuição dos teores de carbono orgânico total (COT) e nitrogênio (N) e a abundância natural de 13C e 15N dos agregados de um Latossolo Vermelho argiloso sob sistema plantio direto (SPD) com integração lavoura-pecuária (ILP), em comparação à uma área em SPD sem ILP e uma área de Cerrado natural em Montividiu, GO. Foram coletadas amostras de solo nas camadas de 0-5 e 5-10 cm, em delineamento inteiramente casualizado. Foram avaliados distribuição da massa dos agregados, diâmetro médio ponderado (DMP), diâmetro médio geométrico (DMG) e MOL, e foram quantificados os teores de COT, N, δ13C e δ15N dos agregados. A área de Cerrado apresentou... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carbono orgânico total; Cerrado; Índices de agregação; Matéria orgânica leve; Milho + braquiária; Rotação de culturas. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011001000022 |
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| Garcia,Rodrigo Arroyo; Rosolem,Ciro Antonio. |
| O objetivo deste trabalho foi avaliar a influência dos cultivos de outono-inverno e primavera, em sistema de plantio direto, nos agregados e matéria orgânica de um Latossolo. O experimento foi conduzido durante as safras 2006/2007, 2007/2008 e 2008/2009. No outono-inverno foram estabelecidas parcelas principais com braquiária (Urochloa ruziziensis), sorgo granífero (Sorghum bicolor) e sorgo consorciado com braquiária. Na primavera, foram cultivados, em subparcelas, milheto (Pennisetum glaucum), 'Cober Crop' (Sorghum bicolor x Sorghum sudanense), crotalária (Crotalaria juncea) ou pousio. A soja foi cultivada como safra de verão, o que totalizou 12 tratamentos. A massa de matéria seca e o crescimento radicular das plantas de cobertura da primavera foram... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carbono; Matéria orgânica; Plantas de cobertura. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010001200021 |
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| Aparecido,Lucas Eduardo de Oliveira; Batista,Rafael Madureira; Moraes,José Reinaldo da Silva Cabral de; Costa,Cícero Teixeira Silva; Moraes-Oliveira,Adriana Ferreira de. |
| Abstract: The objective of this work was to elaborate the agricultural zoning of climatic risk (ZARC) for Physalis peruviana, through the thermal and water requirements of the crop in Southeastern Brazil. Air temperature (TAIR) and precipitation (PYEAR) data from 1,530 meteorological stations covering the entire region were used. Regions were considered climatically favorable to Physalis peruviana when TAIR was between 13 and 18ºC and PYEAR between 1,000 and 2,000 mm per year. Regions where TAIR was above 30ºC or less than 13ºC were considered inapt. Maps were created with this information and used to identify climatic characteristics and to establish the agricultural aptitude classes, termed apt, inapt, and marginal for the cultivation of Physalis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Climate risk; Agrometeorology; Modeling; Big data. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000100900 |
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| Nascimento,Fábio Nunes do; Andrade Júnior,Aderson Soares de; Bastos,Edson Alves; Ribeiro,Valdenir Queiroz; Lopes,Alzeneide da Silva. |
| Abstract: The objective of this work was to evaluate the stalk yield, technological quality parameters, and sugar and alcohol productions in the first sugarcane (Saccharum officinarum) crop cycle, according to the response to N and K2O applications by subsurface drip fertigation. The experiment was carried out in a dystrophic Ultisol, in a randomized complete block design with four replicates. The treatments consisted of a 2X + 2X + 1 incomplete factorial arrangement with the application of 60, 80, 120, 160, and 180 kg ha-1 N and 60, 80, 120, 160, and 180 kg ha-1 K2O. The maximum estimated yield (217.5 Mg ha-1) was obtained with the application of 180 kg ha-1 N and 60 kg ha-1 K2O. Sugar and alcohol productions increased with N application above 120 kg... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharum officinarum; Alcohol production; Fertilizer; Irrigation management; Sugarcane juice. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018001201346 |
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| Sá,Jerusa Maia e; Jantalia,Cláudia Pozzi; Teixeira,Paulo César; Polidoro,José Carlos; Benites,Vinícius de Melo; Araújo,Adelson Paulo. |
| Abstract: The objective of this work was to evaluate agronomic and P recovery efficiencies of a granulated organomineral phosphate fertilizer (OMF) produced from poultry litter, compared with those of monoammonium phosphate (MAP), in soils with different textures. The experiment followed a 2x2x4+2 factorial arrangement, with two Oxisols (sandy loam and clay loam textures), two sources of P (OMF and MAP), four levels of P (50, 100, 200, and 400 mg kg-1), besides two control treatments without P application. The treatments were evaluated in 10-kg pots filled with soil, during four successive cultivations of corn without replacing the P absorbed by the plants, in order to evaluate the actual and residual effects of the fertilizers. Available P contents in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Biomass accumulation; Phosphate fertilization; P recovery efficiency; Tropical soils. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000900786 |
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| Cambraia,Thaís Lopes Leal; Fontes,Renildes Lúcio Ferreira; Vergütz,Leonardus; Vieira,Rogério Faria; Neves,Júlio César Lima; Corrêa Netto,Pedro Silva; Dias,Raphael Felipe Nascimento. |
| Abstract: The objective of this work was to evaluate the effects of the split and combinated application of foliar zinc (ZnF) + soil Zn (ZnS) on Zn concentration in the grains (ZnCG) of common bean (Phaseolus vulgaris). Two experiments were carried out in a greenhouse during two seasons. In the first experiment, two common bean cultivars received six ZnF rates (0, 120, 240, 480, 720, or 1,200 g ha-1), with split applications at the R5, R7, and R8, or R7 and R8, or R8 plant stages. In the second experiment, one cultivar received three ZnS rates (0, 5, or 10 kg ha-1) combined with ZnF rates (0, 1, 1.5, 3, 6, or 10 kg ha-1). In the first experiment, with the ZnF increment, ZnCG increased linearly from 15.3 to 20.7 mg kg-1. ZnF splitting did not affect ZnCG.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris; Concentration of Zn in grains; Food quality; Zinc fertilization. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102102 |
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| Sayd,Ricardo Meneses; Amabile,Renato Fernando; Faleiro,Fábio Gelape; Montalvão,Ana Paula Leite; Coelho,Mateus Costa. |
| Abstract: The objective of this work was to estimate the genetic, phenotypic, and environmental parameters of 113 barley accessions (Hordeum vulgare), previously selected based on high yield, in an irrigated production system in the Cerrado (Brazilian savanna), for use in breeding programs in Brazil. The experiment was conducted in 2013 at two sites in the Federal District, using a randomized complete block design with three replicates. The evaluated traits were: grain yield, kernel plumpness, thousand grain weight, plant height, lodging, and days to heading. Significant differences were observed between environment and accessions for all studied traits, as well as genotype x environment interaction. The MCU 3832 PI 402310, MCU 3484 PI 401962, CI 08053... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hordeum vulgare; Elite genotypes; Genetic resources; Malting quality; Plant breeding. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000200084 |
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| Homrich,Milena Schenkel; Passaglia,Luciane Maria Pereira; Pereira,Jorge Fernando; Bertagnolli,Paulo Fernando; Salvadori,José Roberto; Nicolau,Marcio; Kaltchuk-Santos,Eliane; Alves,Laura Bianchessi; Bodanese-Zanettini,Maria Helena. |
| The objective of this work was to analyze the agronomic performance and chromosomal stability of transgenic homozygous progenies of soybean [Glycine max (L.) Merrill.], and to confirm the resistance of these plants against Anticarsia gemmatalis. Eleven progenies expressing cry1Ac, hpt and gusA genes were evaluated for agronomic characteristics in relation to the nontransformed parent IAS 5 cultivar. Cytogenetical analysis was carried out on transgenic and nontransgenic plants. Two out of the 11 transgenic progenies were also evaluated, in vitro and in vivo, for resistance to A. gemmatalis. Two negative controls were used in resistance bioassays: a transgenic homozygous line, containing only the gusA reporter gene, and nontransgenic 'IAS 5' plants. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anticarsia gemmatalis; Glycine max; Plant resistance to insects; Gene transfer. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000700003 |
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| Marodin,Josué Clock; Resende,Francisco Vilela; Gabriel,André; Souza,Rovilson José de; Resende,Juliano Tadeu Vilela de; Camargo,Cristhiano Kopanski; Zeist,André Ricardo. |
| Abstract: The objective of this work was to evaluate the growth and production of a garlic clone subjected to either infection or virus-free conditions, according to bulb and clove size classification. The experiment was carried out in a randomized complete block design with four replicates. Treatments consisted of either virus-infected or virus-free cloves, obtained from bulbs of four size classes and from cloves with three sieve diameters. Vegetative characteristics and plant production were assessed. Plants infected by viral complexes showed a reduction in emergence (8.4%), plant height (9.8%), and production of marketable bulbs (39.4%), as well as a lower average mass of bulbs and cloves. The virus-free clone produced more bulbs in classes 5 (42-47... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium sativum; Garlic seed; Marketable size; Vegetative growth. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102903 |
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| Würz,Douglas André; Brighenti,Alberto Fontanella; Marcon Filho,José Luiz; Allebrandt,Ricardo; Bem,Betina Pereira de; Rufato,Leo; Kretzschmar,Aike Anneliese. |
| Abstract: The objective of this work was to compare the effect of different times of leaf removal on the vegetative-productive efficiency and on the chemical and physical characteristics of 'Cabernet Sauvignon' clusters in a high-altitude region of the state of Santa Catarina, Brazil. The experiment was conducted in the 2015 and 2016 vintages, in a commercial vineyard, located in the municipality of São Joaquim, in the state of Santa Catarina, at 1,230-m altitude. The treatments consisted of different times leaf removal in the cluster zone, in the following phenological stages: full bloom, buckshot berries, pea-sized berries, veraison, and 15 days after veraison, besides a control without leaf removal. The evaluated variables were subjected to the analysis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera; Altitude wines; Early leaf removal; Grape ripening; Vine management. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001000869 |
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| Matei,Gilvani; Benin,Giovani; Woyann,Leomar Guilherme; Dalló,Samuel Cristian; Milioli,Anderson Simionato; Zdziarski,Andrei Daniel. |
| Abstract: The objective of this work was to evaluate the productive performance, and the adaptability and stability parameters of modern soybean (Glycine max) cultivars in multi-environment trials, as well as to identify the ideal genotypes for eight growing environments in Brazil. A randomized complete block experimental design was carried out, with three replicates, for the evaluation of 46 soybean cultivars in eight environments, in the microregions of adaptation 102, 201, and 202, in the 2014/2015 crop season. A complex genotype x environment interaction occurred, with changes in the ranking of genotypes among locations. The NA 5909 RG, M6410IPRO, NS 5959 IPRO, NS6823RR, M5917IPRO, NS 6767 RR, and 6563RSF IPRO cultivars showed the highest mean yields.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Adaptability and stability; Genotype x environment interaction; GGE biplot; Mixed models. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000700500 |
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| Spehar,Carlos Roberto; Santos,Roberto Lorena de Barros. |
| Twenty six breeding lines, selected from individual plant progenies of hybrids among varieties Amarilla de Marangani, Blanca de Junín, Chewecca, Faro 4, Improved Baer, Kancolla, Real, and Salares-Roja, had their agronomic characters evaluated, in Planaltina, DF, Brazil (15º36'S and 47º12'W), 1,000 masl, in randomized complete blocks, on a Ferralsol, previously limed and fertilized. Grain yield was positively associated with plant height, inflorescence length and diameter, and plant cycle. Genetic gain can be attained by selection based in these characters for commercial production of quinoa in tropical regions. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chenopodium quinoa; Breeding line; Selection; Yield; Cerrado. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005000600012 |
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| Krenchinski,Fábio Henrique; Cesco,Victor José Salomão; Rodrigues,Danilo Morilha; Albrecht,Leandro Paiola; Wobeto,Katle Samaya; Albrecht,Alfredo Júnior Paiola. |
| Abstract: The objective of this work was to evaluate the effect of winter cover crop species on the agronomic performance of soybean (Glycine max) cropped in succession, under a no-tillage system. The study was conducted during three crop seasons (2011/2012, 2012/2013, and 2013/2014), with the following cover crops: white oat (Avena sativa), black oat (Avena strigosa), ryegrass (Lolium multiflorum), vetch (Vicia sativa), forage radish (Raphanus sativus), the intercrop black oat + forage radish, and wheat (Triticum aestivum) as the standard management. Forage radish and the intercrop black oat + forage radish provided greater soil cover rates after 30 days of planting, as well as dry matter production in the three crop seasons. After 45 and 90 days from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Crop rotation; Mulching; No-tillage; Soil cover. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000800909 |
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| Kirinus,Marines Batalha Moreno; Oliveira,Roberto Pedroso de; Silva,Pricila Santos da; Barreto,Caroline Farias; Malgarim,Marcelo Barbosa; Soares Filho,Walter dos Santos. |
| Abstract: The objective of this work was to evaluate the agronomic performance of 'Valência' sweet orange (Citrus sinensis) tree, in combination with 13 rootstocks cultivated in soil and climate conditions of the Brazilian state of Rio Grande do Sul. The following agronomic variables were evaluated: scion height and volume, plant production, production efficiency, productivity, fruit diameter, fruit mass, peel mass, juice yield, soluble solids content, titratable acidity, soluble solids:acidity ratio, ascorbic acid, peel color, antioxidant capacity, and phenolic compounds. A randomized complete block experimental design was used, with three replicates and nine plants per plot, in a two-factor arrangement (13 rootstocks and the 2015 and 2016 harvests). The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus sinensis; Bioactive compounds; Fruit quality. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102700 |
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| Mattos,Lorenna Alves; Amorim,Edson Perito; Amorim,Vanusia Batista de Oliveira; Cohen,Kelly de Oliveira; Ledo,Carlos Alberto da Silva; Silva,Sebastião de Oliveira e. |
| The objective of the present work was to characterize banana accessions from the Germplasm Bank at Embrapa Mandioca e Fruticultura Tropical (Brazil), using agronomical, physical and physicochemical characteristics of fruit and simple sequence repeats (SSR) markers. Twenty-six accessions were analyzed, in which high genetic variability was found, especially for the agronomical characters number of fruit and weight of bunch. Accessions with high contents of carotenoids (diploid 'Jaran'), polyphenols (triploid 'Caipira' and tetraploid 'Teparod') and vitamin C (diploid 'Tuugia' and an unknown triploid AAA) in the fruit were identified. Thirteen microsatellite primers revealed an average of 7.23 alleles, which showed high variability. A dendrogram was prepared... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Musa; Functional properties; Fruit quality; Hybrids; Yield. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010000200005 |
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| Registros recuperados: 4.346 | |
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