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Registro Completo |
Biblioteca(s): |
Embrapa Cerrados; Embrapa Meio Norte / UEP-Parnaíba; Embrapa Rondônia; Embrapa Semiárido. |
Data corrente: |
28/07/1994 |
Data da última atualização: |
12/12/2012 |
Autoria: |
RAIJ, B. van. |
Título: |
Avaliação da fertilidade do solo. |
Edição: |
3. ed. |
Ano de publicação: |
1987 |
Fonte/Imprenta: |
Piracicaba: Instituto da Potassa & Fosfato, 1987. |
Páginas: |
142 p. |
Idioma: |
Português |
Conteúdo: |
The evaluation of soil fertility as it is nowaday practiced in Brazil is described in this publication. In chapter 2 some aspects of the soil constitution are discussed, including a definition of soil, particle size distribution, porosity and aggregation, water retention, aeration, soil minerals and organic matter. The subjects of chapter 3 are soil solution, retention and exchange of ions, origin of ion exchange, cation-exchange equilibrium adsorption of phosphate and biological processes involving nitrogen. In chapter 4 the discussion deals with the concepts on availability of nutrients in soils, response curves, the "law of nimimum", the "law of diminishing increments", the percentage of sufficiency, the mobility of nutrients, interaction of production factors and the most economical amounts of fertilizers. In chapter 5 some aspects of experiments with plants, statistical analysis of experimental results, soil testing and plants analysis are discussed. The steps of a soil testing program include sampling, selection of methods of analysis, correlations between crop responses and results of soil analysis, establisment of classes for interpretation of results and levels of fertilization. Under acidity and liming, in chapter 6, concepts and origin of soil acidity are discussed. The determination of lime requirement is based on, either of three methods, based on the neutralization of aluminum, the increase of soil pH or the increase of base saturation of the cation exchange capacity. In chapter 7 factors affecting the availability of phosphorus and methods for the extraction of soil P are discussed. The correlation between soil P and crop responses to applied phosphorus is shown for soybean, corn and sugar cane and response curves are given for the two first crops to applied phosphorus. The availability of potassium, calcium and magnesium is discussed in chapter 8. Correlations between exchangeable K and crop responses to applied potassium are given for corn, cotton, beans, sugar cane and soybean. The difficulties of soil testing for nitrogen are discussed in chapter 9. Responses of cotton and corn to applied nitrogen. Could not be correlated with soil organic matter. Response curves to nitrogen are shown for sugar cane, corn, beans, cotton and wheat. Practical aspects of the use of soil testing are discussed in chapter 10, concerning informations that should be considered, laboratories, sampling problems, interpretation of the results, implementation of the recommendations and expected variation in soil test results with liming and fertilization. MenosThe evaluation of soil fertility as it is nowaday practiced in Brazil is described in this publication. In chapter 2 some aspects of the soil constitution are discussed, including a definition of soil, particle size distribution, porosity and aggregation, water retention, aeration, soil minerals and organic matter. The subjects of chapter 3 are soil solution, retention and exchange of ions, origin of ion exchange, cation-exchange equilibrium adsorption of phosphate and biological processes involving nitrogen. In chapter 4 the discussion deals with the concepts on availability of nutrients in soils, response curves, the "law of nimimum", the "law of diminishing increments", the percentage of sufficiency, the mobility of nutrients, interaction of production factors and the most economical amounts of fertilizers. In chapter 5 some aspects of experiments with plants, statistical analysis of experimental results, soil testing and plants analysis are discussed. The steps of a soil testing program include sampling, selection of methods of analysis, correlations between crop responses and results of soil analysis, establisment of classes for interpretation of results and levels of fertilization. Under acidity and liming, in chapter 6, concepts and origin of soil acidity are discussed. The determination of lime requirement is based on, either of three methods, based on the neutralization of aluminum, the increase of soil pH or the increase of base saturation of the cation exchange ca... Mostrar Tudo |
Palavras-Chave: |
CORRETIVA; FOSFATOS; MATERIA; METODOS; NUTRIENTES; ORGANICA. |
Thesagro: |
Absorção; Acidez; Adsorção; Adubação; Aeração; Análise; Calagem; Cálcio; Fertilidade; Fósforo; Granulometria; Magnésio; Nitrogênio; Potássio; Solo. |
Categoria do assunto: |
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Marc: |
LEADER 03460nam a2200385 a 4500 001 1566863 005 2012-12-12 008 1987 bl uuuu 00u1 u #d 100 1 $aRAIJ, B. van 245 $aAvaliação da fertilidade do solo. 250 $a3. ed. 260 $aPiracicaba: Instituto da Potassa & Fosfato$c1987 300 $a142 p. 520 $aThe evaluation of soil fertility as it is nowaday practiced in Brazil is described in this publication. In chapter 2 some aspects of the soil constitution are discussed, including a definition of soil, particle size distribution, porosity and aggregation, water retention, aeration, soil minerals and organic matter. The subjects of chapter 3 are soil solution, retention and exchange of ions, origin of ion exchange, cation-exchange equilibrium adsorption of phosphate and biological processes involving nitrogen. In chapter 4 the discussion deals with the concepts on availability of nutrients in soils, response curves, the "law of nimimum", the "law of diminishing increments", the percentage of sufficiency, the mobility of nutrients, interaction of production factors and the most economical amounts of fertilizers. In chapter 5 some aspects of experiments with plants, statistical analysis of experimental results, soil testing and plants analysis are discussed. The steps of a soil testing program include sampling, selection of methods of analysis, correlations between crop responses and results of soil analysis, establisment of classes for interpretation of results and levels of fertilization. Under acidity and liming, in chapter 6, concepts and origin of soil acidity are discussed. The determination of lime requirement is based on, either of three methods, based on the neutralization of aluminum, the increase of soil pH or the increase of base saturation of the cation exchange capacity. In chapter 7 factors affecting the availability of phosphorus and methods for the extraction of soil P are discussed. The correlation between soil P and crop responses to applied phosphorus is shown for soybean, corn and sugar cane and response curves are given for the two first crops to applied phosphorus. The availability of potassium, calcium and magnesium is discussed in chapter 8. Correlations between exchangeable K and crop responses to applied potassium are given for corn, cotton, beans, sugar cane and soybean. The difficulties of soil testing for nitrogen are discussed in chapter 9. Responses of cotton and corn to applied nitrogen. Could not be correlated with soil organic matter. Response curves to nitrogen are shown for sugar cane, corn, beans, cotton and wheat. Practical aspects of the use of soil testing are discussed in chapter 10, concerning informations that should be considered, laboratories, sampling problems, interpretation of the results, implementation of the recommendations and expected variation in soil test results with liming and fertilization. 650 $aAbsorção 650 $aAcidez 650 $aAdsorção 650 $aAdubação 650 $aAeração 650 $aAnálise 650 $aCalagem 650 $aCálcio 650 $aFertilidade 650 $aFósforo 650 $aGranulometria 650 $aMagnésio 650 $aNitrogênio 650 $aPotássio 650 $aSolo 653 $aCORRETIVA 653 $aFOSFATOS 653 $aMATERIA 653 $aMETODOS 653 $aNUTRIENTES 653 $aORGANICA
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro Completo
Biblioteca(s): |
Embrapa Agroindústria Tropical; Embrapa Tabuleiros Costeiros. |
Data corrente: |
22/11/2013 |
Data da última atualização: |
18/09/2014 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
HAWERROTH, F. J.; HERTER, F. G.; PETRI, J. L.; MARAFON, A. C.; LEONETTI, J. F. |
Afiliação: |
FERNANDO JOSE HAWERROTH, CNPAT; FLAVIO GILBERTO HERTER, Prof. Universidade Federal de Pelotas; JOSÉ LUIS PETRI, EPAGRI; ANDERSON CARLOS MARAFON, CPATC; JEISON FURTADO LEONETTI, Universidade Federal de Pelotas. |
Título: |
Evaluation of winter temperatures on apple budbreak using grafted twigs. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Revista Brasileira de Fruticultura, Jaboticabal, v. 35, n. 3, p. 713-721, 2013. |
Idioma: |
Inglês Português |
Conteúdo: |
Temperature is the main climate factor related to induction, maintenance and dormancy release in apple (Malus domestica Borkh.). The inadequate chilling exposure in apples causes budbreak problems, resulting in decrease in yield potential. Thus, the knowledge of physiological principles and environmental factors determining the dormancy phenomenon, especially winter temperature effects, it is necessary for the efficient selection of cultivars in a productive region. In addition, it is indispensable to adapt the orchard management aiming to decrease the problems caused by lack chilling during winter. The objective of this study was to evaluate the influence of different thermal conditions during the dormancy period on budbreak of apple cultivars. One-year-old twigs of ?Castel Gala? and ?Royal Gala? cultivars, grafted on M7 rootstock, were submitted to temperatures of 5, 10 and 15ºC for different exposure periods (168; 336; 672; 1,008 and 1,344 hours). After treatments execution, the plants were kept in a greenhouse at 25ºC. Budbreak was quantified when accumulated 3,444; 6,888; 10,332; 13,776; 17,220 and 20,664 GDHºC after temperature treatments. The cultivars responded differently to temperature effect during the winter period. The temperature of 15°C during winter shows a greater effectiveness on ?Castel Gala? apple budbreak while in the ?Royal Gala? apples the temperatures of 5 and 10ºC show better performance. ?Castel Gala? cultivar (low chilling requirement) may supply its physiological necessities, may be capable to budburst, even when subjected to higher temperatures in relation to ?Royal Gala? apples (high chilling requirement). MenosTemperature is the main climate factor related to induction, maintenance and dormancy release in apple (Malus domestica Borkh.). The inadequate chilling exposure in apples causes budbreak problems, resulting in decrease in yield potential. Thus, the knowledge of physiological principles and environmental factors determining the dormancy phenomenon, especially winter temperature effects, it is necessary for the efficient selection of cultivars in a productive region. In addition, it is indispensable to adapt the orchard management aiming to decrease the problems caused by lack chilling during winter. The objective of this study was to evaluate the influence of different thermal conditions during the dormancy period on budbreak of apple cultivars. One-year-old twigs of ?Castel Gala? and ?Royal Gala? cultivars, grafted on M7 rootstock, were submitted to temperatures of 5, 10 and 15ºC for different exposure periods (168; 336; 672; 1,008 and 1,344 hours). After treatments execution, the plants were kept in a greenhouse at 25ºC. Budbreak was quantified when accumulated 3,444; 6,888; 10,332; 13,776; 17,220 and 20,664 GDHºC after temperature treatments. The cultivars responded differently to temperature effect during the winter period. The temperature of 15°C during winter shows a greater effectiveness on ?Castel Gala? apple budbreak while in the ?Royal Gala? apples the temperatures of 5 and 10ºC show better performance. ?Castel Gala? cultivar (low chilling requirement) may supply i... Mostrar Tudo |
Palavras-Chave: |
Dominancia apical; Grafted twigs; Ramos enxertados; Requerimento em frio. |
Thesagro: |
Dormência; Fisiologia; Maçã; Malus Domestica; Temperatura. |
Thesaurus NAL: |
apical dominance; chilling requirement; dormancy. |
Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/95694/1/AA213010.pdf
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Marc: |
LEADER 02557naa a2200313 a 4500 001 1977140 005 2014-09-18 008 2013 bl uuuu u00u1 u #d 100 1 $aHAWERROTH, F. J. 245 $aEvaluation of winter temperatures on apple budbreak using grafted twigs.$h[electronic resource] 260 $c2013 520 $aTemperature is the main climate factor related to induction, maintenance and dormancy release in apple (Malus domestica Borkh.). The inadequate chilling exposure in apples causes budbreak problems, resulting in decrease in yield potential. Thus, the knowledge of physiological principles and environmental factors determining the dormancy phenomenon, especially winter temperature effects, it is necessary for the efficient selection of cultivars in a productive region. In addition, it is indispensable to adapt the orchard management aiming to decrease the problems caused by lack chilling during winter. The objective of this study was to evaluate the influence of different thermal conditions during the dormancy period on budbreak of apple cultivars. One-year-old twigs of ?Castel Gala? and ?Royal Gala? cultivars, grafted on M7 rootstock, were submitted to temperatures of 5, 10 and 15ºC for different exposure periods (168; 336; 672; 1,008 and 1,344 hours). After treatments execution, the plants were kept in a greenhouse at 25ºC. Budbreak was quantified when accumulated 3,444; 6,888; 10,332; 13,776; 17,220 and 20,664 GDHºC after temperature treatments. The cultivars responded differently to temperature effect during the winter period. The temperature of 15°C during winter shows a greater effectiveness on ?Castel Gala? apple budbreak while in the ?Royal Gala? apples the temperatures of 5 and 10ºC show better performance. ?Castel Gala? cultivar (low chilling requirement) may supply its physiological necessities, may be capable to budburst, even when subjected to higher temperatures in relation to ?Royal Gala? apples (high chilling requirement). 650 $aapical dominance 650 $achilling requirement 650 $adormancy 650 $aDormência 650 $aFisiologia 650 $aMaçã 650 $aMalus Domestica 650 $aTemperatura 653 $aDominancia apical 653 $aGrafted twigs 653 $aRamos enxertados 653 $aRequerimento em frio 700 1 $aHERTER, F. G. 700 1 $aPETRI, J. L. 700 1 $aMARAFON, A. C. 700 1 $aLEONETTI, J. F. 773 $tRevista Brasileira de Fruticultura, Jaboticabal$gv. 35, n. 3, p. 713-721, 2013.
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