Results 1 to 10 of about 1,935 (117)

Nanosilica modulates C:N:P stoichiometry attenuating phosphorus toxicity more than deficiency in Megathyrsus maximus cultivated in an Oxisol and Entisol [PDF]

open access: yesScientific Reports, 2023
Silicon (Si) nanoparticles can attenuate nutritional disorders caused by phosphorus in forages through nutritional homeostasis. This paper aims to evaluate the effects of P deficiency and toxicity in Megathyrsus maximus cultivated in two types of soils ...
Cíntia Cármen de Faria Melo   +5 more
doaj   +2 more sources

A New Approach to UV Protection by Direct Surface Functionalization of TiO2 with the Antioxidant Polyphenol Dihydroxyphenyl Benzimidazole Carboxylic Acid [PDF]

open access: yesNanomaterials, 2020
Skin cancer is the most common malignant cancer with an incidence of 1 million cases/year. It is well known that exposure to UV radiation from sunlight leads the most frequent risk factors for several skin disorders including skin cancer.
Mattia Battistin   +13 more
doaj   +2 more sources

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

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

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

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

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

Indigenous arbuscular mycorrhiza is more important for early growth period of groundnut (Arachis hypogea L.) for P influx in an Oxisol

open access: yesActa Agriculturae Slovenica, 2008
The contribution of indigenous arbuscular mycorrhiza (AM) on phosphorus (P) uptake by groundnut was examined in a low P field soil. The fungicide benomyl was applied to eradicate mycorrhizal infection. The treatments consisted of three P levels viz.
Amitava RAKSHIT, P.B.S. BHADORIA
doaj   +1 more source

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