Luis Sangoi

Luis Sangoi
Universidade do Estado de Santa Catarina | UDESC · Centro de Ciências Agroveterinárias

PhD in Crop Production and Physiolog

About

171
Publications
20,166
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3,378
Citations
Citations since 2016
39 Research Items
1606 Citations
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250

Publications

Publications (171)
Article
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Soybean tolerance to defoliation may be affected by population density, as the plant population interferes with the crop leaf area index . This study aimed to evaluate the effect of defoliation at the beginning of pod formation on the agronomic performance of soybean at different plant densities. The experiment was conducted under field conditions...
Article
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Water deficiency reduces leaf expansion and photosynthetic efficiency, potentially reducing the ability to withstand leaf area (LA) loss. This study aimed to evaluate the effects of water restriction on soybean tolerance to defoliation in the vegetative and reproductive periods of development. Two experiments were conducted in a greenhouse located...
Article
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The use of nitrogen (N) sources that reduce N losses may be an interesting management strategy to increase the economic and environmental sustainability of maize crops. This study aimed to assess the effects of different N sources and rates on maize grain yield and crop profitability. The experiment was conducted in the field on a Red Nitisol of cl...
Article
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A densidade de plantas é uma prática de manejo relevante para obtenção de altas produtividades na cultura da soja (Glycine max (L) Merrill). A tendência de diminuir a população de plantas é crescente devido ao alto custo das sementes. Desta forma, o objetivo do presente estudo foi avaliar o desempenho agronômico de diferentes cultivares de soja à r...
Article
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This study aimed to evaluate the effect of different nitrogen fertilizer sources and rates on the morphophysiological characteristics and nitrogen use efficiency of maize. The experiment was set in Campos Novos, Santa Catarina State, Brazil, during the 2016/2017 and 2017/2018 growing seasons. The experimental design was a randomized block with trea...
Article
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Delay of sowing date in subtropical environments with long growing seasons can modify the yield response of corn hybrids to nitrogen (N) fertilization. This study evaluated the effects of the sowing time, and N top-dress rate on corn hybrids' yield and N-use efficiency with different cycles. Two field experiments were carried out in subtropical env...
Article
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Nos últimos anos, os produtores de arroz irrigado do Litoral Sul de Santa Catarina têm antecipado a semeadura da cultura para o início do mês de setembro, visando viabilizar o cultivo do rebrote. Paralelamente a isto, eles têm aumentado a densidade de semeadura para compensar o menor crescimento da cultura. Este trabalho foi conduzido com o objetiv...
Preprint
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O presente artigo avaliou a interação entre época e densidade de semeadura, objetivando determinar a quantidade de sementes necessária para otimizar a produtividade da cultura para cada época de cultivo. O trabalho mostrou que a densidade ótima para o arroz irrigado cultivado no sistema pré-germinado na região sul de Santa Catarina depende da época...
Article
A emissão e sobrevivência de perfilhos em trigo depende de diversos fatores. Neste estudo, objetivou-se avaliar a influência da densidade de semeadura, do potencial de perfilhamento e da ordem temporal de emissão de perfilhos, na emissão, na sobrevivência e no desempenho de perfilhos individuais em cultivares de trigo contrastantes quanto ao potenc...
Article
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The splitting of nitrogen side-dressing fertilization with the application of a nitrogen dose at maize tasseling may increase grain yield, mainly when the crop is sown at the most favorable date to achieve high productivity. This research was carried out to evaluate the effect of sowing date on the response of maize to the splitting of nitrogen sid...
Article
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Reducing row space and sowing in twin rows of maize (Zea mays L.) allow more equidistant plant distribution at the same density. The objective of this research was to evaluate the effect of these two management practices on the nitrogen content of the index leaf, the leaf area index at silking, and the grain yield of maize at different plant densit...
Article
Sowing date and nitrogen (N) fertilisation modify the morpho-physiological characteristics of maize (Zea mays L.) plants, which can alter the yield. The aim of this study was to analyse the effects of sowing date and N rate on the growth-pattern characteristics of maize hybrids with contrasting cycles, and the subsequent relationship with grain yie...
Article
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Topdressing nitrogen (N) rates may alter the second-crop corn performance, and this response may vary if the corn is grown single or intercropped with grass or leguminous species. This study aimed to evaluate the effect of topdressing N rates on the growth and productive performance of second-crop corn grown single or intercropped with ruzigrass (U...
Article
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The objective of this study was to analyze the effects of nitrogen rates and sowing dates on the severity of white spot disease (WSD) in first season maize hybrids, and their correlation with relative chlorophyll content, thousand grain weight and yield. The experiment was set in a randomized block design with treatments arranged in split-split plo...
Article
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Nitrogen is a nutrient that most limits the development, biomass yield and protein composition of Poaceae. The N losses can be reduced by synchronizing fertilizer additions with plant uptake requirements. The objective of this study was to investigate the effect of N topdressing at different rates and times on grain yield and industrial quality of...
Article
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A temperatura é um dos fatores climáticos mais importantes para o cultivo de arroz. Temperaturas acima de 35ºC limitam a produção deste cereal, podendo acarretar prejuízos irreversíveis à produtividade. A antese é a fase mais sensível do arroz à ocorrência de altas temperaturas. Este trabalho foi conduzido com o objetivo de avaliar o desempenho agr...
Article
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High nitrogen rates favor maize vegetative growth and grain yield losses due to stem lodging. The use of growth regulators can mitigate such effect. This work was carried out aiming to evaluate the effect of trinexapac ethyl on maize hybrids response to side-dress nitrogen rates. The experiment was carried out in Lages, Santa Catarina State, South...
Article
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A qualidade dos grãos é essencial na indústria alimentícia e mostra variações dependendo das condições de manejo da cultura no campo. O objetivo deste estudo foi quantificar o efeito de híbridos, épocas de semeadura e doses de nitrogênio em cobertura sobre a incidência de grãos avariados e sua correlação com fungos patogênicos. O experimento foi co...
Article
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Soybean tolerance to defoliation may be affected by relative maturity group (RMG) of the cultivar. For this reason, this study was carried out to evaluate the effects of artificial defoliation at vegetative and reproductive stages on the agronomic performance of soybean cultivars with different RMG. Two experiments were carried out in greenhouse co...
Article
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Stalk rots compromise the translocation of water and nutrients, affecting grain filling. This study aimed to quantify the incidence of stalk rots in corn hybrids depending on sowing time and nitrogen topdressing rate, and to assess any correlation with grain yield. The experiment was conducted under field conditions in Atalanta, Santa Catarina stat...
Article
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Gibberella ear rot (GER) in maize, caused by Fusarium graminearum species complex, is a destructive disease in southern Brazil and worldwide. Five field-experiments were conducted to determine fungicide efficacy, grain yield and grain quality (study I), as well as response of increasing rates (study II) on GER control, grain yield (GY) and grain da...
Article
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Resumo - Baixas temperaturas reduzem o rendimento do arroz, especialmente quando ocorrem na microsporogênese da cultura. Este trabalho objetivou identificar genótipos tolerantes ao estresse ocasionado pelo frio na microsporogênese. Foram avaliados 17 genótipos do programa de melhoramento da Epagri. O cultivo das plantas foi em casa de vegetação da...
Article
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This work was set aiming to evaluate maize response to the increase in plant population at diferente row spacings. The experiment was conducted in Lages, SC, South of Brazil, on 10/20/2014 and 10/21/2015. Five plant densities (3, 5, 7, 9 and 11 plants m-2) and two row spacings (40 cm – reduced; 80 cm – conventional) were tested.Phenological, morpho...
Article
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The splitting of nitrogen fertilization is a strategy that can increase kernel dry mass accumulation of maize. This work was carried out aiming to evaluate the effects of splitting nitrogen side-dress fertilization on leaf, stem and grain dry mass accumulation after maize silking. The experiment was set in Lages, SC, South of Brazil. Two hybrids (P...
Article
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Title: Diseases incidence in maize hybrids as affected by sowing date and N rate in áreas managed with and without crop rotation. __________ Abstract: The crop rotation system, the sowing date and nitrogen availability affect disease pressure on maize. This work was carried out aiming to evaluate the effect of sowing date and nitrogen side-dress ra...
Article
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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 agronom...
Article
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An uneven distribution of maize plants at the sowing row can decrease grain yield. This work was carried out to evaluate the effect of an increasing nitrogen rate on maize agronomic performance under different variation coefficients of plant spatial distributions at the sowing row. The experiment was conducted in Lages, Santa Catarina State, South...
Article
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In Brazilian agriculture there are few reports on trinexapac-ethyl (TE) effects on maize plant lodging management. This study aimed to evaluate the effects of sequential application of TE sprayed on different plant growth stages of maize using the simple hybrid P30F53HR and the variety SCS 154 Fortuna. Experiments were carried out in a greenhouse i...
Article
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MORPHOLOGICAL CHARACTERISTICS OF MAIZE DUE TO THE USE OF GROWTH REGULATOR AND NITROGEN DOSES ABSTRACT: Nitrogen is the mineral nutrient most absorbed by maize and most interferes with grain yield. To achieve high yields, it is necessary to use high doses of N and high plant densities in the crop. However, these two management practices favor lodg...
Article
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The economy of the High Itajai Valley region is directly influenced by family agriculture. The search for alternatives that increase productivities of the production systems is fundamental to keep these properties profitable. This work was carried out aiming to evaluate the technical efficiency of irrigated production systems for the High Itajai Va...
Article
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This study evaluated the effect of temperatures during the phase of microsporogenesis on spikelet sterility of paddy rice and identified genotypes tolerant to low temperatures at this growth stage. The inbreds SC681, SC491, and SC676 and the cultivars Epagri 109 and SCS116 Satoru were assessed. The genotypes were submitted for three days in a growt...
Article
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The objective of this work was to evaluate the effect of application of the growth regulator Trinexapac-ethyl on maize response to the increase in plant density at two sowing dates. A field experiment was carried out in the municipality of Lages, state of Santa Catarina, Brazil, during the 2014/2015 and 2015/2016 growing seasons. Two sowing dates (...
Article
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As semeaduras adensadas e/ou tardias provocam efeitos morfológicos negativos no milho, tais como redução no diâmetro do colmo, aumento na estatura e da percentagem de plantas acamadas e quebradas. A utilização de reguladores de crescimento pode ajudar a mitigar estas alterações na arquitetura da planta. Este trabalho foi conduzido objetivando avali...
Article
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The recommendation and the use of cultivars adapted to different environmental conditions is fundamental for growers to accomplish high grain yields. The study of maize hybrids potential grain yield on each growing regions is an important tool to make correct decisions about the crop management. This work was carried out aiming to evaluate the agro...
Article
RESUMO – A irregularidade na época de emergência aumenta a competição intraespecífica. Este trabalho foi conduzidoobjetivando avaliar o efeito do tratamento de sementes com bioestimulante sobre o desempenho agronômico do milhosubmetido a diferentes níveis de variabilidade temporal na emergência das plantas. O experimento foi implantado emLages, SC....
Article
RESUMO – A irregularidade na época de emergência aumenta a competição intraespecífica. Este trabalho foi conduzidoobjetivando avaliar o efeito do tratamento de sementes com bioestimulante sobre o desempenho agronômico do milhosubmetido a diferentes níveis de variabilidade temporal na emergência das plantas. O experimento foi implantado emLages, SC....
Article
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The delay of the maize harvest may cause qualitative and quantitative grain losses. This work evaluated the effects of the harvest time on the agronomic performance of maize hybrids with contrasting growth cycles. The experiment was set in Lages, Santa Catarina State, South Brazil, during the 2012/2013 and 2013/2014 growing seasons. A randomized bl...
Article
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RESUMO: A utilização de bioestimulantes pode auxiliar a mitigar os prejuízos ao milho, ocasionados pela má qualidade de estande. Este trabalho foi conduzido objetivando avaliar o efeito do tratamento de sementes com bioestimulante sobre o desempenho agronômico do milho, submetido a diferentes níveis de variabilidade na distribuição espacial das pla...
Article
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Natural infection of Gibberella ear rot (GER) of maize, caused by Fusarium graminearum, is not consistent from year to year in southern Brazil, thus an effective approach to identifying resistance to GER is to use artificial inoculation methods to test germplasm, however not widely implemented in Brazil where no maize hybrids are known with resista...
Article
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A utilização de bactérias diazotróficas pode auxiliar a alcançar maiores produtividades e reduzir os impactos ambientais decorrentes da utilização de fertilizantes nitrogenados. Este trabalho foi conduzido com o objetivo de avaliar o efeito do tratamento de sementes com bactérias do gêneroAzospirillum e da aplicação de doses de N mineral sobre o de...
Article
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A utilização de fontes estabilizadas de N, a partir dos mecanismos de inibição da enzima urease e de inibidores da nitrificação do amônio, pode auxiliar na obtenção de maiores tetos produtivos, contribuindo para a sustentabilidade da atividade agrícola. Este trabalho foi conduzido com o objetivo de avaliar o efeito de diferentes fontes e doses de f...
Article
Nitrogen fertilizer broadcast application over maize (Zea mays L.) is becoming more common as narrow row spacing is adopted and larger fields are cultivated. The contact of N fertilizers with plant leaves can partially damage leaf tissues and consequently affect crop yield. This study was conducted to evaluate the effect of source, method, and time...
Article
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A ocorrência de doenças foliares na cultura do arroz irrigado pode reduzir o rendimento e comprometer a qualidade do grão. O objetivo do trabalho foi quantificar a resposta ao número de aplicações de fungicida, na intensidade de doenças foliares, produtividade, massa de mil grãos e grãos manchados em arroz irrigado. Os experimentos foram conduzidos...
Article
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Nitrogen can mitigate damages caused by leaf area reduction due to its influence on cell division. This work was carried out aiming to evaluate the efficiency of side-dressing different rates of nitrogen as a management strategy to maize stem defoliation at different growth stages. The experiment was set in Lages, during the 2008/2009 and 2009/2010...
Article
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A mancha-de-macrospora, causada pelo fungo Stenocarpella macrospora, tem se mostrado frequente e importante na cultura do milho no Brasil. A resistência genética é uma das principais estratégias de controle de doenças foliares do milho. No Brasil, são escassas as informações sobre resistência de híbridos à S. macrospora. O objetivo deste trabalho f...
Article
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The use of diazotrophic bacteria as a biological input for the production of paddy rice can reduce nitrogen fertilizer applications and contribute to plant development. The use of mixed inoculants’ formulations can increase the efficiency of nitrogen fixation biological process. The objective of this study was to evaluate the effect of single and m...
Article
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The objective of this work was to evaluate the effect of growth retardants on the plants morphological characteristics and on yield components of soybean (cv CD226 RR). The experiment was carried out under field conditions with a completely random experimental layout, with four repetitions, a combination of four growth retardant treatments (mepiqua...
Article
This work was carried out aiming to evaluate the crowding effects on leaf senescence during grainfilling and productivity of maize hybrids commercially released in different eras. The trial was set in Lages, SC,Brazil, during the 2008/2009 and 2009/2010 growing seasons. Two hybrids were evaluated: AG 303 (old hybrid -OH) and P30F53 (modern hybrid -...
Article
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The objective of this work was to evaluate the performance of different sprinkler irrigation systems and their effects on maize grain yield in southern Brazil. The sowing date and treatments in each experiment were: Experiment 1 - November, 8 2005; two irrigation systems, spraying and self-propelled cannon without overlapping and four hybrids (AS 1...
Article
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The evenness of plant distribution at the sowing row is important to reach high productivities. This workwas carried out aiming to evaluate the effect of plant spatial variability in the sowing row on maize grain yield. The trialwas set in Lages, SC, during the 2009/2010 and 2010/2011 growing seasons. Two row spacings (40 and 80 cm) andfive levels...
Article
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Fungicide application is one of the control strategies of fungal diseases in corn leaves. In Brazil, there are no fungicides recorded for the control of corn macrospora leaf spot (MLS). The aim of this study was to assess the efficacy of 16 fungicides on MLS control in a protective, curative and eradicant form. Fungicides of the chemical groups of...
Article
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The objective of this work was to verify if tillers can mitigate damages caused by the main stem defoliation in maize. The experiments were set up in Lages, SC, Brazil, on 10/20/2006 and 10/31/2008. The experimental design was a randomized block with split plots. Two tiller destinations were tested in the main plots: tillers preserved until harvest...
Article
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Historically, tillers have been considered detrimental to maize because they do not produce ears and may act as sinks competing for carbohydrates with the main stem. This work was carried out aiming to evaluate the effect of tiller removal on maize grain yield at different sowing dates. The experiment was set during the 2006/07 and 2008/09 growing...
Article
The objective of this work was to determine plant density of maize hybrids sowed early (August and September), at the end of winter in the South of Brazil, in irrigated and rainfed environments. Two experiments were set in 2008/2009 (one irrigated throughout the whole cycle and another only from V15 to R2) and three in 2009/2010 (in addition to the...
Article
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Resumo – O objetivo deste trabalho foi avaliar a densidade de plantas de híbridos de milho semeados antecipadamente (agosto e setembro), durante o final do inverno no Sul do Brasil, em ambientes irrigados e de sequeiro. Implantaram-se dois experimentos em 2008/2009 (um irrigado durante todo o ciclo e outro apenas de V 15 a R 2) e três em 2009/2010...
Article
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Resumo Na Região Sul do Brasil, a disponibilidade de N para o milho é inferida a partir do teor de matéria orgânica do solo sem nenhu-ma consideração para os teores de N mineral existentes no solo ou nas folhas. O objetivo deste trabalho foi estudar a eficiência de parâmetros de solo (teores de N-NO 3-e N-NH 4 +), e de planta (N total no tecido, cl...