• en
  • pt-br

All publications of “Julio César Lima Neves”

42 results

Modeling in the Adjustment of Fertilization Recommendation through Leaf Analysis in Fertigated ‘Prata’ Banana

José Aridiano Lima de Deus, Júlio César Lima Neves, Ismail Soares, Víctor Hugo Alvarez V., Fabricio Martinazzo Regis de Albuquerque, Lauana Lopes dos Santos, [...]

26/Nov/2018

ABSTRACT: In banana cultivation, fertilization recommendations are almost exclusively based on soil chemical analysis, without considering leaf analysis and expected yield, which can help in the adjustment of fertilization programs. The aim of this study was to develop a method to recommend macronutrient fertilization rates which integrates data on leaf analysis, soil chemical analysis, and yield. Yield, soil chemical analysis, and leaf analysis data of fertigated plantations of ‘Prata’ banana were obtained for the first and second halves of the […]

Relationship between Coffee Leaf Analysis and Soil Chemical Analysis

Jailson Silva Sousa, Júlio César Lima Neves, Herminia Emilia Prieto Martinez, Víctor Hugo V. Alvarez

29/May/2018

ABSTRACT: Research focused on adequate nutrition of plants is essential in modern coffee production to increase yield and develop more efficient management strategies with greater environmental and economic sustainability. The objectives of this study were to establish critical and optimal levels of soil fertility properties for high yielding Arabica coffee crops using the Boundary Line method and, then, relate the macronutrient contents in the diagnostic leaf of coffee to the macronutrients available in the soil using the Quadrant Diagram of […]

Tree Growth and Nutrient Dynamics in Pine Plantations in Southern Brazil

Nairam Felix de Barros, Mauro Valdir Schumacher, Júlio César Lima Neves, Nairam Felix de Barros, Samuel Vasconcelos Valadares

21/Nov/2017

ABSTRACT For the development of nutrient budget models to recommend lime and fertilizers for agricultural and forestry crops, curves of plant growth and nutrient accumulation are required. Information about how nutrients are partitioned between the different plant organs is also necessary, but still scarce for pine in Brazil. This study evaluated the growth, biomass partitioning, and nutrient dynamics in pine forests in southern Brazil. To this end, we assessed unthinned 2, 4, 6, and 8-year-old stands of Pinus taeda L. […]

Effect of Mineral Nitrogen on Transfer of 13C-Carbon from Eucalyptus Harvest Residue Components to Soil Organic Matter Fractions

Michelle de Sales Moreira Demolinari, Rodrigo Nogueira de Sousa, Ivo Ribeiro da Silva, Rafael da Silva Teixeira, Júlio César Lima Neves, Gilberto de Oliveira Mendes

21/Jul/2017

ABSTRACT The amount of harvest residues retained in Eucalyptus plantations strongly influences soil organic matter (SOM), but the efficiency of conversion to SOM may vary according to the type of residue. This study evaluated the recovery of C from Eucalyptus residue components – leaves, bark, branches, roots, and a mix of all residues – in different SOM fractions with or without mineral-N supplementation (200 mg kg-1 of N). Variation in natural 13C abundance was used to trace the destination of […]

Soil Compressibility under Irrigated Perennial and Annual Crops in a Semi-Arid Environment

Rafaela Watanabe, Getulio Coutinho Figueiredo, Álvaro Pires da Silva, Júlio César Lima Neves, Teogenes Senna de Oliveira

07/Jul/2017

ABSTRACT In irrigated soils, a continuous state of high moisture reduces resistance of the soil to applied external forces, favouring compaction. The aim of this study was to evaluate the susceptibility to compaction of developed calcareous soils in irrigated annual and perennial cropping systems of the Apodi Plateau, located in the Brazilian semi-arid region. Four areas of irrigated crops were evaluated: banana after two (B2) and 15 (B15) years cultivation, pasture (P), and a corn and beans succession (MB), as […]

Soil Quality after Six Years of Paper Mill Industrial Wastewater Application

Ivan Carlos Carreiro Almeida, Raphael Bragança Alves Fernandes, Júlio César Lima Neves, Hugo Alberto Ruiz, Túlio Luís Borges de Lima, Willem Hoogmoed

18/Jan/2017

ABSTRACT The application of wastewater to irrigate soils may be an attractive option for paper mills, especially when the effluents can also provide nutrients to plants. Since there could be negative environmental effects, such activity must be preceded by a thorough evaluation of the consequences. The changes in soil quality of a Neossolo Flúvico Distrófico (Typic Udifluvent) were evaluated over a period of six years of irrigation with treated effluent from a wood pulp company. Although effluent application for six […]

Omission and Resupply of Nitrogen Affect Physiological and Enzymatic Activities and the Gene Expression of Eucalypt Clones

Loane Vaz Fernandes, Lílian Angélica Moreira, Nairam Félix de Barros, Cléberson Ribeiro, Júlio César Lima Neves

08/Dec/2016

ABSTRACT: The mineral nutrient uptake of plants in the field occurs in pulses, due to variations in the substance concentrations at the root surface. The fluctuations in nutrient supply probably induce changes in the plant, which are to date unknown for Eucalyptus. This study evaluated these changes in plant growth, nutritional status, photosynthesis, and gene expression, which can serve as biomarkers of the nitrogen status, of four eucalypt clones exposed to N omission and resupply. A greenhouse experiment with four […]

CROP RESIDUE DECOMPOSITION AND NUTRIENT MINERALIZATION IN SOIL WITH DIFFERENT TEXTURES

Henrique José Guimarães Moreira Maluf, Emanuelle Mercês Barros Soares, Ivo Ribeiro da Silva, Júlio César Lima Neves, Lucas de Oliveira Guimarães Silva

01/Dec/2015

ABSTRACT The sustainability of conservation farming systems is closely linked to return of nutrients to the soil through decomposition of crop residues. The aim of this study was to evaluate decomposition of crop residues and nutrient mineralization in soils with different textures over a 175-day incubation period. The experimental design consisted of a 6 × 4 × 5 factorial arrangement – six treatments, composed of four crop residues (corn, brachiaria, common bean, and Stylosanthes) and two controls, both without residues, […]

NUTRIENT AVAILABILITY AND RECOVERY FROM CROP RESIDUES IN SOIL WITH DIFFERENT TEXTURES

Henrique José Guimarães Moreira Maluf, Emanuelle Mercês Barros Soares, Ivo Ribeiro da Silva, Júlio César Lima Neves, Mailson Félix de Oliveira Silva

01/Dec/2015

ABSTRACT Crop residues on the soil surface not only provide physical protection but may release significant amounts of nutrients to the soil through decomposition. However, the availability of these nutrients to plants has not been sufficiently studied. The aim of this study was to evaluate the total contents of organic C and N, pH, and the availability and recovery rate of P, K, Ca, Mg, and S from the biogeochemical cycling of different crop residues over time in built soils […]

RATES OF BORON RECOVERED BY DIFFERENT EXTRACTANTS FROM SOILS OF BAHIA AND MINAS GERAIS, BRAZIL, WITH AND WITHOUT LIMING

José Augusto dos Santos, Renildes Lúcio Ferreira Fontes, V Victor Hugo Alvarez, Júlio César Lima Neves, Maurício Paulo Ferreira Fontes, Arlindo Ferreira de Faria, [...]

01/Jul/2015

Information on rates of nutrient recovery by extractants as a function of added doses of the nutrients is scarce, yet necessary for fertilization and liming recommendation systems. The aim of this study was to determine boron recovery rates by boiling water and boiling CaCl2, with and without liming, in soils of the States of Bahia and Minas Gerais, Brazil. We set up three experiments under greenhouse conditions using a (6 × 2 + 9) × 6 factorial arrangement, consisting of […]

1 2 3 5