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| Registros recuperados: 112 | |
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| Gonçalves, José Ricardo Pupo; EMBRAPA; Moreira, Adônis; EMBRAPA/CPPSE; Bull, Leonardo Theodoro; UNESP; Crusciol, Carlos Alexandre Costa; UNESP; Boas, Roberto Lyra Villas; UNESP. |
| A utilização de calcário em plantio direto é um dos problemas na adoção desse método de manejo do solo. O trabalho teve por objetivo avaliar as alterações nas propriedades químicas do solo cultivado nos sistemas de plantio convencional (SCC) e plantio direto (SPD), em função da granulometria e de doses de calcário dolomítico aplicado em superfície. Os experimentos foram realizados por três anos agrícolas em Latossolo Vermelho distrófico, em área de pastagem de Urochloa decumbens, com cultivo de milho em sucessão com aveia preta e triticale. O delineamento experimental utilizado foi os blocos casualizados em parcelas sub-subdivididas, com quatro repetições. Foram realizadas análises químicas (pH, Ca, Mg, H+Al e saturação por bases) do solo coletado nas... |
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Palavras-chave: 5.01.01.00-5 acidez do solo; PH; Calagem; Saturação por bases; Manejo do solo 5.01.01.05-6 soil acidity; PH; Liming; Base saturation; Soil management. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3659 |
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| Santos, Carlos Antônio dos; Carmo, Margarida Goréte Ferreira do; Bhering, Aline da Silva; Costa, Evandro Silva Pereira; Amaral Sobrinho, Nelson Moura Brasil do. |
| The effects of the dose and application method of limestone - broadcast or in furrow - and of agricultural gypsum on soil fertility, the control of clubroot, and cauliflower development in mountain farming areas were evaluated. Initially, four doses of broadcast limestone (0.0, 1.0, 2.0, and 4.0 Mg ha-1) and two cauliflower cultivars (Sharon and Piracicaba Precoce) were analyzed. A second experiment evaluated limestone (4.0 Mg ha-1) application treatments: broadcast and in furrow, broadcast limestone + gypsum (3.0 + 1.0 Mg ha-1), and broadcast gypsum (1.0 Mg ha-1). Soil fertility was improved, and significant increases were observed in the total and healthy root volume with increasing doses of limestone. With 4.0 Mg ha-1, a 58 and 85% increase in yield was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica oleracea var. botrytis; Plasmodiophora brassicae; Liming; Slope; Application method. Brassica oleracea var. botrytis; Plasmodiophora brassicae; Liming; Slope; Application method.. |
| Ano: 2020 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42494 |
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| Morales,Luis Alberto; Paz-Ferreiro,Jorge; Vieira,Sidney Rosa; Vázquez,Eva Vidal. |
| The aim of this study was to describe the effect of lime additions on the spatial variability of pH and Eh in a typic Plintacualf cultivated with rice, in Corrientes, Argentina. The 5.1 ha field was divided in three sub plots at which dolomitic lime additions were made at the rates zero, 625 kg ha-1 and 1250 kg ha-1. The soil was sampled at three stages: before sowing thus in aerobic conditions, and then two more times in anaerobiosis. Ninety-six samples per sub plot were taken on each of the three sampling stages on a grid of 11.9 x 20 m. Soil pH and Eh were measured by routine methods. The pH values increased, whereas Eh values decreased, following flooding. The coefficients of variation for pH was rather low during all the three studied periods.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Semivariogram; Flooded field; Liming; Kriging. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052010000500008 |
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| Meda,Anderson R.; Pavan,Marcos A.; Cassiolato,Marcelo E.; Miyazawa,Mário. |
| Low Ca and Mg are serious limitations to crop production in sandy soils of the northwest Paraná, Brazil. Thus soil samples of an Oxisol collected in this region were packed into 30cm long columns. Dolomite lime (2.0, 0.84, 0.30, and < 0.30 mm screen) was added on soil surface, then leached with deionized water. Thereafter, the columns were dismantled and the soil cut into 5cm segments for chemical analysis. Dolomite lime increased pHCaCl2,, KCl-exchangeable Ca and Mg and residual CO3 mostly in the top surface layers. Surface dolomite lime had no effect on pH, Ca, Mg, and CO3 in the leachate, independent on the lime particle size. These results indicated that surface dolomite lime application had no effect on subsoil composition and mostly of the calcium... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Liming; Ca and Mg leaching; Subsoil acidity. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000200014 |
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| Silva,Paulo da; Nahas,Ely. |
| The diversity of bacterial isolates from soil in response to different plants (control, Brachiaria ruziziensis and Cajanus cajan), fertilization (control, simple superphosphate and rock phosphate) and liming (with and without lime) was evaluated. Phenotypic and physiological characteristics of the isolates were recorded and organized in a file to identify the bacteria. Among the isolates, 95% were Gram-positive and 5% Gram-negative rods. Soil cultivated with B. ruziziensis favored the nonsporing Gram-positive and Gram-negative rods compared to soils with C. cajan or uncultivated. Number of spore-forming Gram-positive rods were higher in plots with superphosphate than in unfertilized soil or soil fertilized with rock phosphate. In unfertilized plots, larger... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacteria; Phosphate; Brachiaria ruziziensis; Cajanus cajan; Liming. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000400005 |
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| Barbosa,Julierme Zimmer; Poggere,Giovana Clarice; Dalpisol,Maristela; Serrat,Beatriz Monte; Bittencourt,Simone; Motta,Antonio Carlos Vargas. |
| ABSTRACT Although it is known that alkalinized sewage sludge raises the pH of acid soils, there is limited knowledge regarding its effects on other soil fertility indicators, such as P and K availability and soil organic C content. Thus, the goal of this study was to evaluate how the application of alkalinized sewage sludge affects the fertility of acid soil. Twenty sewage treatment plants were selected throughout Paraná State (Brazil), and samples of alkalinized sewage sludge and samples of the most representative agricultural soil of the region were collected (covering soils with medium, clayey or very clayey texture). Each soil was incubated for 60 days with doses of sewage sludge (0, 10, 20, 40, and 80 Mg ha-1) from its region and equivalent doses of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sanitation waste; Liming; Phosphorus recovery; Nutrient source; Organic matter.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500483 |
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| Maluf,Henrique José Guimarães Moreira; Silva,Carlos Alberto; Curi,Nilton; Norton,Lloyd Darrell; Rosa,Sara Dantas. |
| ABSTRACT Humic acid (HA) may reduce adsorption and increase soil P availability, however, the magnitude of this effect is different when Ca2+ prevails over Mg2+ in limed soils. The objective of this study was to evaluate the effects of HA rates and carbonate sources on the adsorption, phosphate maximum buffering capacity (PMBC), and P availability in two contrasting soils. Oxisol and Entisol samples were firstly incubated with the following HA rates: 0, 20, 50, 100, 200 and 400 mg kg-1, combined with CaCO3 or MgCO3, to evaluate P adsorption. In sequence, soil samples were newly incubated with P (400 mg kg-1) to evaluate P availability. The least P adsorption was found when 296 mg kg-1 of HA was added to Oxisol. Applying HA rates decreased maximum... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic ligands; Liming; Humic acid-metal-P complexes; Langmuir isotherm; Phosphate maximum buffering capacity.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000100007 |
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| Predebon,Rodrigo; Gatiboni,Luciano Colpo; Mumbach,Gilmar Luiz; Schmitt,Djalma Eugenio; Dall’Orsoletta,Daniel João; Brunetto,Gustavo. |
| ABSTRACT: The objective of this study was to compare two methods of evaluation of potencial acidity (H+Al) and two methods to estimate liming requirement (LR) for soils from the west region of Santa Catarina State, Brazil. Fourteen soils were incubated with 7 lime rates for 120 days, obtaining the real values of H+Al at pH 7.0 and LR. These values were used as reference to evaluate the accuracy of two H+Al estimating methods: SMP buffer and calcium acetate at pH 7.0, and to evaluate the accuracy of two LR methods: base saturation (BS) and SMP index. On average, H+Al was underestimated in 6 and 40% by SMP and calcium acetate methods, respectively, especially in soils with high buffer capacity. The LR was underestimated in 20 and 30% by SMP index and BS,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: SMP; Calcium acetate; Base saturation; Liming. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000400253 |
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| XAVIER, A. M.; TROMBETA, N. V.; OLIVEIRA, M. C. de; SOUSA, D. M. G. de. |
| A presente publicação busca responder de forma objetiva às frequentes indagações e dúvidas no momento da preparação da terra para o plantio. É importante para o agricultor ter, de maneira prática, esclarecimentos sobre como proceder a uma correta amostragem de solo, conhecer sua fertilidade, entender questões relativas ao correto uso do calcário agrícola, sua adequada utilização, as diferentes formas de adubação e a importância do plantio de uma semente de qualidade certificada. Esses fatores, implementados sob orientação técnica, deverão proporcionar ao produtor rural êxito em sua atividade. |
| Tipo: Livros |
Palavras-chave: Preparo do Solo; Fertilizing; Soil Preparation; Seeding; Adubação; Calagem; Fertilidade do Solo; Gesso; Semeadura; Semente; Solo; Gypsum; Liming; Soil fertility; Seeds; Soil. |
| Ano: 2009 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/578192 |
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| Registros recuperados: 112 | |
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