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All publications of “Luís Sangoi”

7 results

Timing and Splitting of Nitrogen Side-Dress Fertilization of Early Corn Hybrids for High Grain Yield

Fernando Panison ORCID logo , Luís Sangoi, Murilo Miguel Durli, Lucieli Santini Leolato, Antonio Eduardo Coelho, Hugo Francois Kuneski, [...]

08/Mar/2019

ABSTRACT Currently, most nitrogen fertilizer is side-dressed when corn is in the four (V4) to eight (V8) expanded leaf stage. However, recent studies have shown that modern hybrids take up high amounts of nitrogen during grain filling. This indicates that a late nitrogen fertilization, at the time of crop flowering, may be important to optimize corn agronomic performance. This study aimed to evaluate the effect of the timing and splitting of nitrogen side-dress application on the agronomic performance of early […]

MAIZE AGRONOMIC PERFORMANCE AS AFFECTED BY SEED TREATMENT WITH AZOSPIRILLUM SP. AND MINERAL NITROGEN RATES

Luís Sangoi, Ligia Maria Maraschi da Silva, Murilo Renan Mota, Fernando Panison, Amauri Schmitt, Natalia Maria de Souza, [...]

01/Jul/2015

The use of diazotrophic bacteria can help to achieve higher yields and reduce negative environmental impacts caused by N fertilizers. The aim of this study was to evaluate the effects of seed treatment with Azospirillum bacteria and the application of different rates of mineral N on maize agronomic performance at two levels of yield management. A field experiment was set up in Lages, SC, Brazil, in the 2011/2012 and 2012/2013 growing seasons. A randomized block experimental design arranged in split-split […]

STABILIZED NITROGEN SOURCES AS AN ALTERNATIVE FOR INCREASING GRAIN YIELD AND NITROGEN USE EFFICIENCY BY MAIZE

Murilo Renan Mota, Luis Sangoi, Diego Eduardo Schenatto, Willian Giordani, Cristian Majolo Boniatti, Leonardo Dall’Igna

01/Mar/2015

The use of stabilized N sources, with mechanisms for inhibition of urease enzyme and with ammonium nitrification inhibitors, may help to achieve higher grain yields, contributing to the sustainability of agricultural activity. The aim of this study was to evaluate the effect of different mineral N sources and application rates on maize grain yield and N use efficiency. A field experiment was carried out in Lages, SC, Brazil, in a randomized block design in split-plots. Nitrogen was side-dressed in the […]

Nitrogen availability, tiller survival and contribution to maize grain yield

Luis Sangoi, Vitor Paulo Vargas, Amauri Schimitt, Anderson José Pletsch, Jeferson Vieira, Alexandre Saldanha, [...]

01/Feb/2011

Nitrogen influences the processes of morphogenesis and tillering in Poaceae. However, its effect on maize tillering is unknown. The purpose of this study was to assess whether N rates and application time affect tiller emission, survival and contribution to maize grain yield. The experiment was set up in Lages, Santa Catarina State, Brazil, in the growing seasons of 2006/07 and 2008/09. The experimental design was arranged in randomized blocks with split plots. In the first year, the main plots consisted […]

Addition of triple superphosphate anticipates nitrogen leaching in soil

Analu Mantovani, Paulo Roberto Ernani, Luis Sangoi

01/Oct/2007

Leaching of N added to soils as ammonium or as other forms that transform into it depends partially on nitrification because ammonium is retained by the soil negative charges, while nitrate remains completely in the soil solution. Since the decrease of the soil pH at fertilized sites can negatively affect nitrification, our study aimed to evaluate the effect of adding an acidifying phosphate together with nitrogen fertilizers on nitrogen leaching in an acid soil. The experiment was carried out in […]

Maize response to nitrogen fertilization timing in two tillage systems in a soil with high organic matter content

Luis Sangoi, Paulo Roberto Ernani, Paulo Regis Ferreira da Silva

01/Jun/2007

No-tillage systems, associated to black oat as preceding cover crop, have been increasingly adopted. This has motivated anticipated maize nitrogen fertilization, transferring it from the side-dress system at the stage when plants have five to six expanded leaves to when the preceding cover crop is eliminated or to maize sowing. This study was conducted to evaluate the effects of soil tillage system and timing of N fertilization on maize grain yield and agronomic efficiency of N applied to a soil […]

Nutrient uptake kinetics and morphological traits of roots of maize cultivars with contrasting genetic variability

Delson Horn, Paulo Roberto Ernani, Luis Sangoi, Cleber Schweitzer, Paulo Cezar Cassol

01/Feb/2006

Maize genotypes with contrasting genetic variability have different yield potential. This distinct yield potential may be partially caused by differences in the root system morphology or in the nutrient uptake kinetics parameters. This study aimed to assess such morphological and physiological plant attributes of three maize genotypes with different genetic bases. A single-cross hybrid (P32R21), a double-cross hybrid (Traktor) and an open-pollinated variety (BRS Planalto) were studied. The uptake kinetics parameters (maximum influx – Imax, Michaelis-Mentem constant – Km, and […]