Results 11 to 20 of about 20,693 (272)

Magnetic susceptibility in the prediction of soil attributes in two sugarcane harvesting management systems [PDF]

open access: yesEngenharia Agrícola, 2013
This study aimed to investigate the potential use of magnetic susceptibility (MS) as pedotransfer function to predict soil attributes under two sugarcane harvesting management systems. For each area of 1 ha (one with green sugarcane mechanized harvesting
Rafael G. Peluco   +4 more
doaj   +1 more source

Evaluación del desempeño productivo y las reacciones metabólicas de ovinos de ceba alimentados con Brachiaria spp, en el trópico bajo de Colombia, al darles suplementos alimenticios

open access: yesRevista de Investigación Agraria y Ambiental, 2023
Contextualización: los sistemas de producción animal en Colombia se caracterizan por la deficiente disposición y calidad de forrajes, en zonas como el piedemonte llanero, debido a las condiciones edafológicas y climáticas de estas zonas .
María Ligia Roa Vega   +1 more
doaj   +1 more source

Chemical attributes of a remineralized Oxisol [PDF]

open access: yesCiência Rural, 2017
ABSTRACT: Remineralizers are comminuted rocks that are applied to soil, and their use as an agricultural amendment was regulated in Brazil in 2013. However, mechanisms of action of these materials must be better known to enable them to be best used in agricultural fields.
Silva, Rafael Cipriano da   +4 more
openaire   +4 more sources

Comparison of spatial interpolation techniques to predict soil properties in the colombian piedmont eastern plains

open access: yesTecnura, 2017
Context: Interpolating soil properties at field-scale in the Colombian piedmont eastern plains is challenging due to: the highly and complex variable nature of some processes; the effects of the soil; the land use; and the management. While interpolation
Mauricio Castro Franco   +2 more
doaj   +1 more source

Solubilización de fosfatos por bacterias del género Burkholderia aisladas de oxisoles de la altillanura colombiana

open access: yesCiencia y Tecnología Agropecuaria, 2021
Los oxisoles de la altillanura en Colombia contienen hasta 400 mg/kg de fósforo. Sin embargo, la fracción disponible para las plantas es inferior a 3,5 mg/kg, lo que obliga la suplementación con fertilizantes fosfóricos.
Lina Margarita Moreno-Conn   +2 more
doaj   +1 more source

Terrain forms and spatial variability of soil properties in an area cultivatedwith citrus Formas do relevo e variabilidade espacial de propriedades do solo em área cultivada com citros

open access: yesEngenharia Agrícola, 2011
The technique of precision agriculture and soil-landscape allows delimiting areas for localized management, allowing a localized application of agricultural inputs and thereby may contribute to preservation of natural resources.
Marisol G. A. de Leão   +4 more
doaj   +1 more source

Potential of Grasses in Phytolith Production in Soils Contaminated with Cadmium

open access: yesPlants, 2020
Cadmium (Cd) is a very toxic heavy metal occurring in places with anthropogenic activities, making it one of the most important environmental pollutants. Phytoremediation plants are used for recovery of metal-contaminated soils by their ability to absorb
Múcio Mágno de Melo Farnezi   +7 more
doaj   +1 more source

Relationships between soil class and nutritional status of coffee plantations Relacionamento entre classes de solo e o estado nutricional de lavouras cafeeiras

open access: yesRevista Brasileira de Ciência do Solo, 2005
Farm planning requires an assessment of the soil class. Research suggest that the Diagnosis and Recommendation Integrated System (DRIS) has the capacity to evaluate the nutritional status of coffee plantations, regardless of environmental conditions ...
Paulo Guilherme Salvador Wadt
doaj   +1 more source

Convergent adaptations: bitter manioc cultivation systems in fertile anthropogenic dark earths and floodplain soils in central Amazonia [PDF]

open access: yes, 2012
Shifting cultivation in the humid tropics is incredibly diverse, yet research tends to focus on one type: long-fallow shifting cultivation. While it is a typical adaptation to the highly-weathered nutrient-poor soils of the Amazonian terra firme, fertile
Alessandro Alves-Pereira   +5 more
core   +5 more sources

Fontes de potássio em solos distroférricos cauliníticos originados de basalto no Rio Grande do Sul Potassium-bearing minerals in two oxisols of Rio Grande do Sul State, Brazil

open access: yesRevista Brasileira de Ciência do Solo, 2004
Este estudo teve como objetivo identificar os minerais fonte de K em dois solos originários de basalto: um Latossolo Vermelho distroférrico típico e um Nitossolo Vermelho distroférrico típico. A análise mineralógica por difratometria de raios-X mostrou a
G. W. Melo, E. J. Meurer, L. F. S. Pinto
doaj   +1 more source

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