Results 11 to 20 of about 1,581 (179)

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

Sci Rep, 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 ...
de Faria Melo CC, Silva Amaral D, de Mello Prado R, de Moura Zanine A, de Jesus Ferreira D, de Cássia Piccolo M.   +5 more
europepmc   +2 more sources

GEOCHEMICAL BACKGROUND IN AN OXISOL [PDF]

Engenharia Agrícola, 2017
ABSTRACT Geochemical background establishment is indispensable to determine the actual state of contamination of soils and sediments. However, no scientific consensus exists regarding the methodology for determining these values. In this context, this study aimed to establish the geochemical background in an Oxisol (Rhodic Hapludox) by means of an ...
Cembranel, Adir S., Sampaio, Silvio C., Remor, Marcelo B., Gotardo, Jackeline T., Rosa, Pábolla M. Dalla   +4 more
openaire   +5 more sources

The mechanism for enhancing phosphate immobilization on colloids of oxisol, ultisol, hematite, and gibbsite by chitosan.

Chemosphere, 2022
Phosphorus (P) availability in highly weathered soils is significantly influenced by the contents of iron (Fe)/aluminum (Al) oxides, clay minerals, and organic matter. With the increasing interest in bio-fertilizers (e.g.
J. Nkoh, Ke-wei Li, Yangguang Shi, Jiu‐yu Li, R. Xu   +4 more
semanticscholar   +1 more source

Precrops alleviate soil physical limitations for soybean root growth in an Oxisol from southern Brazil

, 2021
The impact of soil compaction on soybean root growth and grain yield can be alleviated by the presence of biopores and root channels in the soil profile.
A. Bertollo, M. T. Moraes, J. C. Franchini, A. Soltangheisi, A. A. Balbinot Junior, R. Levien, H. Debiasi   +6 more
semanticscholar   +1 more source

Soil compaction impacts soybean root growth in an Oxisol from subtropical Brazil

Soil & Tillage Research, 2020
Soil mechanical impedance, hypoxia and water stress are the main soil physical causes of reduced root growth, but they are rarely included in root growth models. The aim of this work was to study the impact of soil compaction on soybean root growth in an
M. T. Moraes, H. Debiasi, J. C. Franchini, A. A. Mastroberti, R. Levien, D. Leitner, A. Schnepf   +6 more
semanticscholar   +1 more source

Chemical attributes of a remineralized Oxisol [PDF]

Ciência 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, Cury, Marina Elias, Ieda, João José Cardinali, Sermarini, Renata Alcarde, Azevedo, Antonio Carlos de   +4 more
openaire   +4 more sources

Copper adsorption in tropical oxisols [PDF]

Brazilian Archives of Biology and Technology, 2003
Cu adsorption, at concentrations between 0 to 800 mg L-1, was evaluated in surface and subsurface samples of three Brazilian soils: a heavy clayey-textured Rhodic Hapludalf (RH), a heavy clayey-textured Anionic ''Rhodic'' Acrudox (RA) and a medium-textured Anionic ''Xanthic'' Acrudox (XA). After adsorption, two consecutive extractions were performed to
Silveira, Maria Lucia Azevedo, Alleoni, Luís Reynaldo Ferracciú   +1 more
openaire   +4 more sources

Phosphorus speciation by P-XANES in an Oxisol under long-term no-till cultivation

, 2020
In highly weathered soils with low phosphorus (P) content and high P fixing capacity, long-term application of P fertilizers may influence P speciation.
J. Antonangelo, R. F. Firmano, Hailin Zhang, M. Colzato, D. Abdala, H. Carvalho, A. O. Junior, L. Alleoni   +7 more
semanticscholar   +1 more source

Opal phytolith extraction in oxisols [PDF]

Quaternary International, 2013
Peer ...
Calegari, Marcia R., Madella, Marco, Vidal Torrado, Pablo, Otero, Xosé Luis, Macias, Felipe, Osterrieth, M.   +5 more
openaire   +2 more sources

Agronomic biofortification of leafy vegetables grown in an Oxisol, Alfisol and Vertisol with isotopically labelled selenium (77Se)

, 2020
Selenium biofortification of crops is a proven technology for improving dietary nutrition. This study used isotopically labelled selenate (>99% enriched 77Se) to assess uptake and Se availability to two green vegetables, Brassica napus L (B.
I. Ligowe, S. Young, E. Ander, V. Kabambe, A. Chilimba, E. Bailey, R. Lark, P. Nalivata   +7 more
semanticscholar   +1 more source