Clovis Souza

Clovis Souza
Universidade do Estado de Santa Catarina | UDESC · Centro de Ciências Agroveterinárias

Dr. Crop Science

About

74
Publications
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535
Citations
Citations since 2016
28 Research Items
392 Citations
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20162017201820192020202120220204060
20162017201820192020202120220204060

Publications

Publications (74)
Article
Full-text available
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
O cultivo de soja em regiões de altitude estimula o crescimento de estruturas vegetativas e diminui as reprodutivas. O uso de reguladores de crescimento favorece a efetivação de estruturas reprodutivas. Objetivou-se avaliar variáveis morformétricas e componentes de rendimento de soja sob aplicação do regulador de crescimento cloreto de clormequate....
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
Seed reserve mobilization is considered a post-germination process; however, seed storage protein mobilization occurs during germination. Thus, the knowledge of seed protein composition is important to understand various processes during germination, and it be associated with seed vigor. Therefore, this study aimed to characterize landrace genotype...
Article
The use of vigorous seeds in drought situations, it may be a strategy to ensure tolerance to drought for better development of the seedlings. It was evaluated whether maize (Zea mays L.) plants from seeds with high vigor possess greater tolerance to water deficit than low vigor seeds and to identify which morphological parameters, biochemical compo...
Article
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Trinexapac-ethyl (henceforth referred to as trinexapac) is a growth regulator that can mitigate some undesirable vegetative growth in Poaceae plants, reducing lodging and optimizing the distribution of photoassimilates to reproductive organs. The objective of this research was to evaluate the morphophysiological and productive responses of rye cult...
Article
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Resumo: O uso de fitorregulador pode reduzir o crescimento vegetativo, tornar a planta de soja mais compacta, reduzindo o índice de acamamento. Objetivou-se neste estudo avaliar os efeitos de dose e estádios de aplicação de fitorreguladores sobre os atributos morfométricos e desempenho produtivo da soja em ambiente controlado e em campo. Os experim...
Article
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A aplicação de dessecantes pode influenciar na qualidade fisiológica das sementes de trigo e ainda não há herbicidas dessecantes recomendados para uniformizar a maturidade das lavouras. Objetivou-se neste trabalho avaliar a qualidade fisiológica das sementes de trigo cultivar CD 123, colhidas em diferentes estádios fenológicos e colorações dos grão...
Article
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The objective of this study was to evaluate the effect of treatment with simple or coated nanoparticle and concentrations on storage time and the germination parameters in corn seeds. The treatments composed of three magnesium sources, magnesium oxide nanoparticles and nanoparticles in the form of (MgO NPs), magnesium carbon oxide core-shell nanopa...
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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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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Callose is cell wall constitutive component of some plant tissues and it is synthesized and deposited in response to stresses (abiotic and biotic). Considering physiological seed quality as an attribute that determines the rapid and uniform emergence of seedlings under a wide range of environmental conditions, this study verified the callose accumu...
Article
Aiming to assess the impact of water deficit on agronomic, photosynthetic and biochemical parameters of two soybean cultivars during reproductive stage, soybean plants were subjected to three gravimetric humidity levels. Water deficit decreased the leaf relative water content, leaf dry matter content, dried pod weight, grain weight, chlorophyll act...
Article
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Root rot (RR), which can occur in different cropping systems, affects soybean seed yield. The aim of this study was to determine the incidence of RR in soybean crop systems and its relationship with soybean yield. The study was carried out for two growing seasons in a no-till system consisting of four soybean crop systems: soybean-oat+soybean-oat,...
Article
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This paper aimed to evaluate the genetic diversity of upland rice varieties, determine the components that contributes most to productivity and evaluate the yield of varieties grown in conventional and organic farming systems. The experiment was carried out during the 2011/2012, 2012/2013 and 2013/2014 crop years, with 11 local upland rice varietie...
Article
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A fim de avaliar o efeito do regulador de crescimento trinexapac-ethyl em diferentes doses e uma época de aplicação em um híbrido de milho, instalou-se um experimentos em Lages, SC, Brasil, no ano agrícola de 2014/2015. O delineamento experimental foi o de blocos ao acaso. Os tratamentos constaram da aplicação do trinexapac-ethyl nas doses de 0,0;...
Article
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Agrobiodiversity is essential for a sustainable food production, and the knowledge of the potential characteristics of landrace seeds may prompt farmers to adopt the habit of seed conservation for this species. This study aimed at categorizing landrace and commercial common bean (Phaseolus vulgaris L.) accessions, according to the physiological qua...
Article
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Selection of effective agronomic and industrial parameters of oat cultivars is a decisive step in oat breeding programs for development of new oat and elite cultivars. In this study, a new approach was utilized to distinguish the most informative agronomic and industrial parameters that are most affected with fungicide application in oat cultivars....
Article
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Defoliation may play a role in source-sink relationships and reduce the physiological quality of seeds. The main goal of this research was to investigate the effect of successive defoliations on physiological quality of wheat seeds in 'BRS Umbu' and 'BRS Tarumã' cultivars. Two experiments were carried out using a complete randomized design with fou...
Article
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The occurrence of leaf diseases in irrigated rice can reduce yield and grain quality. The aim of this study was to evaluate the relationship between incidence and severity in the intensity of leaf spots in irrigated rice. Experiments were conducted with the rice cultivar SCS 116 Satoru in 2011/12 and 2012/13 growing seasons in Rio do Oeste, located...
Article
Full-text available
Resumo Nitrogen is the element that has the most influence on grain yield in maize plantations; however, the excess of this nutrient increases the likelihood of lodging. The occurrence of lodging can be prevented by applying a plant growth regulator. In this respect, an experiment was carried out to evaluate the effects of nitrogen sidedressing ab...
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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Depending on the cultivar, the use of desiccants in the preharvest can favor maintenance of physiological quality. The objective of the study was to assess the physiological quality of soybean seeds as due to the use of apreharvest desiccant and desiccation time in two harvests (2011/12 and 2012/13). The treatments were five soybean cultivars, two...
Article
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The use of desiccants is an alternative to anticipate the soybean harvest and keep the physiological quality of seed. The objective of this work was to assess the production performance and germination seeds in response to differents stages and desiccation chemicals products to early harvest of soybean cultivars. The experiment was conducted in Cam...
Article
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The objective of this work was to evaluate the effects of the application of doses of the plant growth regulator trinexapac‑ethyl on plant height, lodging index, and grain yield of the white oat cultivar Barbarasul at different cultivation environments and nitrogen doses. The experiments were conducted in the 2010 and 2011 crop seasons in the munic...
Article
Barley spot blotch (SB) is a frequent foliar disease of the brewing barley crop in southern Brazil. At present, there are few reports regarding the efficacy of fungicide spray programs in relation to the severity of SB damage to barley crop yield. The goals of this study were as follows: 1) to determine the crop growth stage at which severity of SB...
Article
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O cultivo de arroz de sequeiro, em Santa Catarina, tem diminuido substancialmente nos ultimos anos, e as sementes sao guardadas em dominio do proprio agricultor, o que compromete sua qualidade. Este trabalho tem o objetivo de resgatar os genotipos crioulos de arroz e caracterizar a qualidade fisiologica das sementes produzidas, indicando os genotip...
Article
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The measurement of electrical conductivity (EC) is a quick and easy test to evaluate seed vigor. However, for seeds of white oat still lacking such information on effectiveness and time of imbibition for EC test. Thus, the present study aimed to evaluate the effects of soaking time on the values of electrical conductivity and verify the efficiency...
Article
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O trabalho foi realizado com o objetivo de caracterizar genótipos crioulos de feijão quanto ao potencial fisiológico das sementes produzidas em diferentes regiões de Santa Catarina, por duas safras consecutivas. Foram utilizados sementes de 26 genótipos, produzidas nas safras 2009/2010 e 2010/2011 nos municípios de Anchieta, Joaçaba e Lages. Após o...
Article
The measurement of electrical conductivity (EC) is a quick and easy test to evaluate seed vigor. However, for seeds of white oat still lacking such information on effectiveness and time of imbibition for EC test. Thus, the present study aimed to evaluate the effects of soaking time on the values of electrical conductivity and verify the efficiency...
Article
São consideradas sementes de alta qualidade aquelas que apresentam ótimas características genéticas, fisiológicas, físicas e sanitárias. O controle de qualidade assume importância fundamental para assegurar a obtenção de sementes de alta qualidade, a partir da fase de campo, do beneficiamento e armazenamento das sementes de soja. O objetivo deste t...
Article
This work was carried out with the aim of characterising landrace genotypes of the common bean as to the physiological potential of seeds produced in two consecutive seasons in different regions of the state of Santa Catarina, Brazil. The seeds of 26 genotypes were used, produced during 2009/2010 and 2010/2011 in the towns of Anchieta, Joaçaba and...
Data
Qualidade fisiológica de sementes de feijão crioulo produzidas no oeste e planalto catarinense 1 Physiological quality of seeds from common landrace beans produced in the west and highlands of the state of Santa Catarina, Brazil sementes e produtividade. Com base na análise dos resultados, os genótipos foram separados em classes pelo teste Scott-Kn...
Article
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Growing beans in different environments influences its grain technological quality. Therefore, the performance of different bean genotypes under different growing locations, allows the identification of genotypes with increasing hydration capacity and lower cooking time according to the specific crop environment. The objective of this study was to...
Conference Paper
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The aim of this study was to evaluate the sanitary quality (incidence of Colletotrichum lindemuthianum (Sacc. & Magnus) Briosi & Cavara(1889) of seeds of common bean genotypes from agroecological and conventional system in two years. Bean seeds were produced in the field in agroecological and conventional systems in grown season 2011/2012 and 2012/...
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
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The objective of this study was to identify the phenotypic and genotypic correlations between the plant cycle and plant habit and the effect on yield in landrace bean genotypes. The experiment was conducted in Joaçaba and Lages, Santa Catarina State for the 2008/2009 crop using 26 bean genotypes: 22 landrace and 4 commercial genotypes obtained from...
Article
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O objetivo deste trabalho foi avaliar o efeito dos redutores do crescimento sobre características morfológicas da planta e dos componentes da produção em soja, cv. CD226 RR. O experimento foi desenvolvido em condições de campo, sob delineamento experimental inteiramente casualizado, com quatro repetições, tendo como tratamentos a combinação de quat...
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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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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5 RESUMO-A qualidade das sementes de arroz pode ser afetada pela ocorrência de microrganismos, tanto para condições de implantação da cultura como durante o armazenamento. Sementes de arroz irrigado dos cultivares Epagri 109 e SCS 116 Satoru, obtidas de experimentos realizados em Pouso Redondo/SC e Rio do Sul/SC, safra 2010/11, e em Rio do Oeste/SC...
Article
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The objective of this work was to evaluate the effect of plant spatial arrangement on maize tillering, leaf area, and grain productivity. The experiments were carried out in the spring/summer of the 2007/2008 and 2008/2009 growing seasons. Treatments consisted of four plant densities (three, five, seven, and nine plants per square meter) and three...
Article
Full-text available
The objective this work was to verify the relative contribution between yield components and yield of the common bean landraces cultivars. The experiment was carried out with twenty six genotypes of beans under field conditions in the 2008/2009 growing season using randomized block design with three repetitions, where evaluated the yields component...
Article
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2) Universidade Federal do Rio Grande do Sul, Faculdade de Agronomia, Avenida Bento Gonçalves, n o 7.712, CEP 90001‑970 Porto Alegre, RS. E‑mail: paulo.silva@ufrgs.br Resumo – O objetivo deste trabalho foi avaliar o efeito de variações no arranjo espacial de plantas sobre o perfilhamento, a área foliar e a produtividade do milho. Os experimentos fo...
Article
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O objetivo deste trabalho foi caracterizar a diversidade de genotipos crioulos de feijao em dois anos de cultivo quanto as caracteristicas morfoagronomicas. O experimento foi conduzido com 24 genotipos nas safras de 2006/2007 e 2007/2008 no municipio de Lages - SC, sob delineamento experimental em blocos ao acaso com 3 repeticoes, em que foram aval...
Article
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before cooking, common beans require a soaking time varying from 2 to 18 hours depending on the genotype, which makes it difficult to standardize the soaking time in order to reach the shortest cooking time. The objective of this work was to evaluate the effect of bean hydration capacity to standardize the shortest cooking time. Eighteen bean landr...
Article
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This work studied the influence of different plant densities and Roundup ReadyTM (RR) soybean genotypes, on some morphoagronomic characteristics of soybean sown in two distinct crops. The experiment was carried out in Campos de Cima da Serra in the state of Rio Grande do Sul, Brazil, in the 2006/07 and 2007/08 growing seasons with CD 213RR and BRS...
Article
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The objective of this study was to characterize the physiologic potential of common landrace bean seeds. The seeds were produced in the 2007/2008 growing season with 26 genotypes from Lages-SC. The seed physiological potential was evaluated from the percentage germination, before and after accelerated ageing, the weight of 100 seeds, electrical con...
Article
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The low height of pod insertion in beans is due to the low height of its basal internodes that lead to problems in plant management, low grain quality and inefficient commercial harvest. The objective of this work was to evaluate the effect of exogenous gibberellic acid (GA3) to increase basal internodes of bean seedlings. The experiment was conduc...
Article
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A baixa altura de insercao de vagem em feijao e pela baixa estatura dos entrenos basais da planta, que acarreta em problemas de manejo das plantas, qualidade de graos e ineficiencia na colheita com automotriz. Assim, o objetivo deste trabalho foi determinar o efeito de giberelina exogena para incrementar estatura dos entrenos basais das plantas. O...
Article
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The objective of this work was to characterize the genetic diversity of landrace beans in two years for morphologic and agronomy characteristics. Twenty four bean (Phaseolus vulgaris L.) genotypes were evaluated during the growing seasons of 2006/2007 and 2007/2008, using the randomized block design with three replications in Lages-SC. The genotype...