Consulta: subjectFacets:"Soil chemical properties"
Registros recuperados: 9
Data/hora: 11/06/2024 09:14:56

Efeito de diferentes usos da terra nas características do solo no Estado do Acre.
Provedor de dados: 14
Autores: AMARAL, E. F. do; BROWN, I. F.; MELO, A. W. F. de.
O uso da terra na Amazônia está condicionado ao processo de fragmentação florestal. No Acre, o arco do desmatamento é constituído pela BR-364 e BR-317. Este trabalho tem como objetivo avaliar os efeitos do uso da terra nas características químicas e físicas do solo, em uma cronosseqüência de uso em uma área de grande fazendeiro no sudeste acreano. Foi conduzido na fazenda Ponteio, situada às margens da BR-317, no município de Capixaba, sendo georreferenciadas três unidades amostrais, caracterizando o gradiente de pressão antrópica: pasto, capoeira e floresta. Em cada unidade amostral foram retiradas informações sobre o histórico de uso e coletados dados referentes às seguintes características: densidade aparente, resistência do solo até 60 cm...
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Fragmentação florestal; Arco do Desmatamento; Rodovia BR-364; Rodovia BR-317; Fazenda Ponteio; Capixapa (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Propiedades químicas del suelo; Uso de la tierra.; Fragmentación de hábitats; Propiedades fìsicas del suelo; Uso da terra; Solo; Propriedade Físico-Química; Land use; Habitat fragmentation; Soil chemical properties; Soil physical properties.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/495274

Aptidão natural para o cultivo de pimenta longa (Piper hispidinervum) no Acre.
Provedor de dados: 14
Autores: AMARAL, E. F. do; PACHECO, E. P.; PEREIRA, J. B. M.
Uma das culturas promissoras para o Estado do Acre é a pimenta longa, por tratar-se de uma planta nativa que ocorre principalmente em áreas de capoeira e que ainda hoje é encarada pela maioria dos produtores, como uma planta invasora de difícil controle em áreas de agricultura de subsistência e nas pastagens. O atual Governo do Estado já elencou 9 espécies como sistemas de produção estratégicos visando fortalecer a economia do setor primário, provenientes de áreas desmatadas e, uma destas é a Pimenta Longa. O trabalho objetivou caracterizar os locais de ocorrência de populações nativas de pimenta longa.
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Western Amazon; Características físico-químicas; Reconocimiento de suelos; Análisis del suelo; Propiedades químicas del suelo; Propiedades fìsicas del suelo; Acre; Amazônia Ocidental; Amazonia Occidental.; Pimenta Longa; Piper Hispidinervum; Aptidão Agrícola; Reconhecimento do Solo; Características Agronômicas.; Análise do Solo; Piper longum; Soil physical properties.; Agronomic traits; Soil analysis; Soil surveys; Soil chemical properties.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1117287

Relationships between microbial activity and soil physical and chemical properties in native and reforested Araucaria angustifolia forests in the state of São Paulo, Brazil
Provedor de dados: 90
Autores: Pereira,Jamil de Morais; Baretta,Dilmar; Bini,Daniel; Vasconcellos,Rafael L. de F.; Cardoso,Elke Jurandy Bran Nogueira.
Araucaria angustifolia (Bert.) O. Kuntze is the main component of the Mixed Ombrophilous forest and, in the State of São Paulo, it is associated with a high diversity of soil organisms, essential for the maintenance of soil quality, making the conservation of this ecosystem a major and pressing challenge. The objective of this study was to identify the physical and chemical properties that are most closely correlated with dehydrogenase enzyme activity, basal respiration and microbial biomass under native (NF) and replanted (RF) Araucaria angustifolia forests in three regions of the state of São Paulo, in winter and summer. The main differentiating factors between the areas were also determined. Each forest was represented by three true replications; at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Multivariate analysis; Soil quality; Soil chemical properties; Microbiological properties.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000300003

Effect of wildfire on soil physical and chemical properties in a Nothofagus glauca forest, Chile
Provedor de dados: 97
Autores: LITTON,CREIGHTON M.; SANTELICES,RÓMULO.
Effects of a wildfire on soil chemical and physical properties in a Nothofagus glauca (Phil.) Krasser forest in the Coastal Mountain Range of south-central Chile were investigated. Response of the soil during the first two years following a wildfire was examined, where data from soil in a burned forest were compared to that in an adjacent, unburned stand. The effects that wildfire have on soil properties in this highly fragmented ecosystem are not well understood, but results from this study suggest similar responses to those found in other mediterranean forest systems. Both physical (bulk density, percent soil moisture, and soil organic matter content) and chemical properties (exchangeable inorganic nitrogen, extractable phosphorus, exchangeable...
Tipo: Journal article
Palavras-chave: Nothofagus glauca; Soil chemical properties; Soil physical properties; Wildfire.
Ano: 2003
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2003000400001

Long-term effect of mulching with fertilizer under corn-legumes cropping on crop yield and improvement of soil chemical and physical properties
Provedor de dados: 106
Autores: Samnao Phetchawee; Nonglak Vibulsukh; Maleewon Theppoolpon; Withaya Marsangsan.
2 ill., 7 tables
Palavras-chave: Corn; Maize; Fertilizer; Mulching; Corn-legume cropping system; Yields; Soil chemical properties; Soil physical property; Long-term effect; ข้าวโพด; ปุ๋ย; การใช้วัสดุคลุมดิน; ระบบการปลูกพืช; พืชตระกูลถั่ว; ผลผลิต; คุณภาพทางฟิสิกส์ของดิน; คุณสมบัติทางเคมีของดิน.
Ano: 1985
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4600

ผลของอัตราปุ๋ยเคมีและน้ำกากส่าต่อผลผลิตอ้อยและความอุดมสมบูรณ์ของดินร่วนทราย ชุดยโสธร
Provedor de dados: 106
Autores: Srisuda Thippayarugs; Kobkiet Paisancharaen; Jeam Jabrakon.
Tipo: PhysicalObject
Palavras-chave: Sugarcane; Loamy sand; Yasothon soil series; Chemical fertilizer; Vinasse; Soil chemical properties; Soil physical properties; Sugarcane yield; อ้อย; การปลูก; ดินร่วนทราย; ชุดดินยโสธร; การบำรุงดิน; การให้ปุ๋ย; อัตราปุ๋ย; ปุ๋ยเคมี; น้ำกากส่า; ปริมาณธาตุอาหารพืช; คุณสมบัติทางเคมีกายภาพของดิน; ผลผลิต; ผลกระทบ.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5826

Effect of mulching and manuring on corn cultivation
Provedor de dados: 106
Autores: Samnao Phetchawee; Nonglak Vibulsukh.
1 ill., 3 tables
Palavras-chave: Corn; Maize; Mulching; Manuring; Cultural practices; Fertilizers; Composts; Yields; Nutrient uptake; Soil chemical properties; ข้าวโพด; การคลุมดิน; การใช้ปุ๋ยคอก; การเพาะปลูก.
Ano: 1982
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4107

พลวัตอนินทรีย์ไนโตรเจนระหว่างการปลูกข้าวไร่-พืชตระกูลถั่วและความอุดมสมบูรณ์ของดินก่อนปลูกอ้อย
Provedor de dados: 106
Autores: Wanwipa Kaewpradit; Namfon Thawaro; Poramate Banterng.
The objective of this experiment was to study the effect of preceding legume-upland rice planting on soil fertility before succeeding sugarcane planting. The experimental design was Randomized Complete Block Design (RCBD) with four replications. The treatments were: (1) Control (2) Upland rice (rice planting without chemical fertilizer) (3) Upland rice + F (rice planting with chemical fertilizer) (4) Soybean (5) Sun hemp. Soil data were collected at 0-15 cm soil depth for chemical analysis before experiment. At 1, 2, 4, 8 and 16 weeks after planting, soil were sampled for soil mineral N analysis by Flow Injection Analyzer (FIA). Soil samples were collected at the preceding crop harvest were analyzed for chemical properties which showed that soil mineral N...
Tipo: PhysicalObject
Palavras-chave: Soybean; Sun hemp; Upland rice; Legumes; Preceding crop; Crop residue incorporation; Soil inorganic nitrogen; Soil chemical properties; Soil fertility; Sugarcane planting; ถั่วเหลือง; ปอเทือง; ข้าวไร่; การไถกลบเศษซากพืช; ปริมาณอนินทรีย์ไนโตรเจน; คุณสมบัติทางเคมีและกายภาคของดิน; ความอุดมสมบูรณ์ของดิน; พื้นที่ปลูก; การปลูกอ้อย.
Ano: 2013
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5812

Tropical soils characterization at low cost and time using portable X-ray fluorescence spectrometer (pXRF): Effects of different sample preparation methods
Provedor de dados: 64
Autores: Silva,Sérgio Henrique Godinho; Silva,Elen Alvarenga; Poggere,Giovana Clarice; Guilherme,Luiz Roberto Guimarães; Curi,Nilton.
ABSTRACT Portable X-ray fluorescence spectrometer (pXRF) has been recently adopted by the Soil Science community for uses in both field and laboratory, obtaining the total content of several chemical elements in a few seconds. Sulfuric acid digestion is an expensive and time-consuming laboratory analysis that provides contents of Fe2O3, Al2O3, SiO2, TiO2 and P2O5, important for soil studies. Due to few pXRF studies in tropical soils, this work aimed to compare contents of Fe2O3, Al2O3, SiO2, TiO2 and P2O5 obtained by pXRF with sulfuric acid digestion results, and to evaluate the effects of varying forms of preparing soil samples and scanning with pXRF on the resulting values in Brazilian soils. Soils were scanned in five conditions in-field (in situ) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil chemical properties; Proximal sensor; Sulfuric acid digestion analysis; Soil properties prediction; Oxides.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000100080