• en
  • pt-br

All publications of “Edson Marcio Mattiello”

5 results

Acid Ammonium Citrate as P Extractor for Fertilizers of Varying Solubility

Wedisson Oliveira Santos ORCID logo , Edson Marcio Mattiello, Matheus Sampaio Carneiro Barreto, Reinaldo Bertola Cantarutti

07/Jan/2019

ABSTRACT: There are several globally accepted methods to chemically characterize P-fertilizers, but not all are suitable to predict the agronomic efficiency of the P sources in terms of plant nutrition. Our aim was to investigate the performance of P extractors for fertilizers, investigating the consistency of different methods for P sources of varying properties and the related plant responses. The experiment was carried out in a greenhouse, using corn as a model plant. Phosphorus values extractable in water, 2 % […]

LOSS OF EXTRACTION CAPACITY OF MEHLICH-1 AND MONOCALCIUM PHOSPHATE AS A VARIABLE OF REMAINING P AND ITS RELATIONSHIP TO CRITICAL LEVELS OF SOIL PHOSPHORUS AND SULFUR

Sarah Vieira Novais, Edson Marcio Mattiello, Leonardus Vergutz, Leônidas Carrijo Azevedo Melo, Írio Fernando de Freitas, Roberto Ferreira Novais

01/Jul/2015

The Mehlich-1 (M-1) extractant and Monocalcium Phosphate in acetic acid (MCPa) have mechanisms for extraction of available P and S in acidity and in ligand exchange, whether of the sulfate of the extractant by the phosphate of the soil, or of the phosphate of the extractant by the sulfate of the soil. In clayey soils, with greater P adsorption capacity, or lower remaining P (Rem-P) value, which corresponds to soils with greater Phosphate Buffer Capacity (PBC), more buffered for acidity, […]

Phloem mobility of Boron in two eucalypt clones

Edson Marcio Mattiello, Hugo Alberto Ruiz, Ivo Ribeiro da Silva, Jorge Eduardo Souza Sarkis, Júlio César Lima Neves, Murilo Marques Pucci

01/Dec/2009

Boron deficiency causes large productivity losses in eucalypt stands in extensive areas of the Brazilian Cerrado region, thus understanding B mobility is a key step in selecting genetic materials that will better withstand B limitation. Thus, in this study B mobility was evaluated in two eucalypt clones (68 and 129), under B sufficiency or B deficiency, after foliar application of the 10B isotope tracer to a single mature leaf. Samples of young tissue, mature leaves and roots were collected 0, […]

Transport of boron in soil and its uptake by eucalypt

Edson Marcio Mattiello, Hugo Alberto Ruiz, Ivo Ribeiro da Silva, Nairam Félix de Barros, Julio César Lima Neves, Maurel Behling

01/Oct/2009

The mechanism and magnitude of B transport to plant roots depend on both water and B soil contents. The contribution of mass flow and diffusion to the B transport in soil to eucalypt roots was evaluated in response to the water potential and B rates. Two water potentials (-10 and -40 kPa) and six B levels (0; 0.5; 1; 2; 3 and 5 mg dm-3 of B) were evaluated. The plants were grown in 2.5 dm3 plastic pots with soil, […]

Dry matter production, root growth and calcium, phosphorus and aluminum absorption by coffea canephora and coffea arabica under influence of aluminum activity in solution

Edson Marcio Mattiello, Marcos Gervasio Pereira, Everaldo Zonta, Jocimar Mauri, José Dioenis Matiello, Paulo Geovane Meireles, [...]

01/Feb/2008

This study had the objective of evaluating the dry matter production, root growth, and the absorption and distribution of Ca, P and Al in the leaves, stem and roots of two Conilon (Coffea canephora) coffee clones (Mtl 25 and Mtl 27) and the coffee variety Catuaí Amarelo (Coffea arabica) grown in nutrient solution with increasing Al3+ activity. The plants were cultivated in 5 L pots, containing modified Hoagland & Arnold nutrient solution. After eight days of adaptation, the plants were subjected to Al […]