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| Pavinato,Paulo Sergio; Merlin,Alexandre; Rosolem,Ciro Antonio. |
| The objective of this work was to evaluate the effect of organic compounds from plant extracts of six species and phosphate fertilization on soil phosphorus availability. Pots of 30 cm height and 5 cm diameter were filled with Typic Hapludox. Each pot constituted a plot of a completely randomized design, in a 7x2 factorial arrangement, with four replicates. Aqueous extracts of black oat (Avena strigosa), radish (Raphanus sativus), corn (Zea mays), millet (Pennisetum glaucum), soybean (Glycine max), sorghum (Sorghum bicolor), and water, as control, were added in each plot, with or without soluble phosphate fertilization. After seven days of incubation, soil samples were taken from soil layers at various depths, and labile, moderately labile and nonlabile P... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Raphanus sativus; Cover crops; Crop rotation; Labile phosphorus; Low-molecular-weight organic acids; Phosphorus fractionation. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008001000017 |
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| Soltangheisi,Amin; Santos,Valdevan Rosendo dos; Franco,Henrique Coutinho Junqueira; Kolln,Oriel; Vitti,André Cesar; Dias,Carlos Tadeu dos Santos; Herrera,Wilfrand Ferney Bejarano; Rodrigues,Marcos; Soares,Thais de Marchi; Withers,Paul John Anthony; Pavinato,Paulo Sergio. |
| ABSTRACT: The use of mineral phosphate fertilizers associated with organic residues can improve fertilizer use efficiency and consequently decrease their usage costs. Soil application of filter cake (FC) can provide nutrients and enhance physical quality. This study aimed to evaluate the effects of different phosphate fertilizers [rock phosphate (RP) and triple superphosphate (TSP)] applied at different rates (90 and 180 kg ha-1 P2O5) associated with filter cake (10 Mg ha-1 dry matter) on the soil phosphorus (P) fractions after two consecutive seasons of sugarcane in two distinct soils, sandy and clayey. Yield was significantly improved with FC addition in the first year in both soils, while inorganic P sources did not influence crop yield at either... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Reactive phosphate; P solubility; Soil P fractionation; Organic waste. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100519 |
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| Pavinato,Paulo Sergio; Merlin,Alexandre; Rosolem,Ciro Antonio. |
| O sistema de manejo normalmente afeta a disponibilidade de nutrientes no solo, em decorrência das práticas de cultivo, da rotação de culturas e dos resíduos remanescentes na área cultivada. O objetivo deste trabalho foi avaliar as alterações na disponibilidade de cátions no perfil do solo sob sistema convencional e semeadura direta, por mais de 10 anos, em dois Latossolos do cerrado brasileiro. Os experimentos foram realizados em Costa Rica, MS, e Luziânia, GO, sendo um Latossolo Vermelho (LV) e um Latossolo Vermelho-Amarelo (LVA), respectivamente, com dois sistemas de cultivo, semeadura direta (SSD) e cultivo convencional (SCC). Os solos foram coletados em tubos de PVC, da superfície até 40 cm de profundidade, e conduzidos para casa de vegetação, no... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acidez e manejo do solo; Potássio no solo; Cálcio no solo; Magnésio no solo; Semeadura direta. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000400027 |
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| Pavinato,Paulo Sergio; Restelatto,Rasiel; Sartor,Laércio Ricardo; Paris,Wagner. |
| Alternative production of forages in periods of scarcity, especially during the winter, is expressively important for grazing of beef and dairy cattle in Brazil. The current work aimed to evaluate the influence of nitrogen fertilization on the production and nutritional value of ryegrass forage (cv. Barjumbo). The experiment was carried out on the winter seasons of 2009 and 2010, at the experimental area of UTFPR, Dois Vizinhos - PR, Brazil. The design consisted of randomized blocks with four N rates (0; 40; 80 and 120 kg ha-1) and three replicates. Each plot measured 5x5 m, with 20 cm row spacing and 2.5 cm between plants, totaling 20 kg ha-1 of viable seeds. It was determined the dry matter production, crude protein level, total accumulation of crude... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lolium multiflorum; Crude protein; Empty of forage; Neutral detergent fiber. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000200002 |
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| Broch,Dirceu Luiz; Pavinato,Paulo Sergio; Possentti,Jean Carlo; Martin,Thomas Newton; Del Quiqui,Erci Marcos. |
| O enxofre é um componente de proteínas e aminoácidos em plantas, sendo exigido em boa quantidade por leguminosas, pelo alto acúmulo de proteínas nessas espécies. Com isso, este trabalho teve por objetivo verificar a influência de diferentes fontes de enxofre sobre a produtividade de grãos na cultura da soja. O experimento foi instalado na área experimental da Fundação MS, em Maracajú, MS, em três anos consecutivos no delineamento de blocos ao acaso, com quatro repetições, submetidas à análise de variância conjunta. Foram implantadas as cultivares BRS-133 (2002/03 e 2003/04) e CD 202 (2004/05). Como tratamento foram avaliados: as adições de enxofre na forma de superfosfato simples, MAP sulfurado + Sulfurgran, Sulfurgran, enxofre elementar, gesso granulado,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soja; Plantas-efeito do enxofre; Cerrado brasileiro. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902011000300027 |
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| Pavinato,Paulo Sergio; Rocha,Gustavo Cassoni; Cherubin,Maurício Roberto; Harris,Ian; Jones,Davey Leonard; Withers,Paul John Anthony. |
| ABSTRACT: Knowledge of the distribution of total phosphorus (P) content in native soils provides information on the management of ecosystem, land capability for agriculture, environmental quality, and biodiversity conservation. We mapped the spatial distribution of total P concentrations in topsoils (0-30 cm) of uncultivated (native) areas in Brazil. We obtained data on native total P of the southern, south-eastern, and north-eastern regions from reports of exploratory projects developed between 1960s and 1970s by EMBRAPA and by the RADAM Brazil Project. We estimated data from the central-western and northern regions from the relationship between total P and soil properties (Fe, Al, C and clay content), based on the RADAM Brazil Project. Soil total P... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil native P; Legacy P; Soil total P; Agriculture expansion. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000601601 |
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