Highlights:The Italian cultivar Fiano is productive and adapted to the region of Campo Largo. Sprouting of dormant buds can be increased with Erger in years of low chill. Wine production in the altitude region in the Paraná State may be a new economical option. AbstractDespite the expansion of viticulture in Brazil, the lack of chilling hours is a factor that requires the use of growth inducers to promote sprouting. Erger™ is a product of low toxicity and efficient in the bud induction of apple. However, there is a lack of studies testing such a product on the grapevine. This research was carried out to evaluate the sprouting and phenological cycle of 'Fiano' grapevine after Erger™ and calcium nitrate application in comparison to hydrogen cyanamide, as well as characterizing its production in Brazil. The experiment was carried out in Campo Largo, PR, under a trellis system, with plants spaced at 1.25 × 2.7 meters. The experimental design was a randomized complete block design with four replications and three plants per plot. Different concentrations of Erger™ and calcium nitrate (3%, 5%, 7%, and control) were tested compared to the standard dose of Dormex™ (4%) to induce sprouting in 'Fiano' grapevine, while phenological aspects of this cultivar were evaluated following the BBCH scale. Soluble solids content, titratable acidity, and pH were evaluated weekly after the beginning of berry maturation. The main biometric and qualitative characteristics of bunches were evaluated at harvest. All treatments presented satisfactory sprouting rates in 2014, but a lower cold accumulation was observed in 2015, and Erger™ application significantly increased sprouting when compared to the control. Plants treated with Erger™ had a delay in sprouting in the two years of study, requiring more time to reach a satisfactory percentage of open buds. The anticipation of sprouting was also observed in all treatments in the second agricultural season due to higher temperatures in relation to the previous year when the occurrence of low temperatures led to a longer time to start bud opening, which was related to ecodormancy. The cultivar Fiano is productive and adapted to the conditions of Campo Largo, PR, Brazil.
RESUMOO desenvolvimento da videira está bastante relacionado às condições climáticas de cada região; portanto, para se obter frutos de qualidade, torna-se essencial o conhecimento dos estádios fenológicos que, somados ao conhecimento da demanda térmica da planta, fazem com que o viticultor programe as práticas culturais de seu vinhedo reduzindo custos e fornecendo matéria-prima de qualidade para a indústria. O objetivo deste trabalho foi avaliar o potencial da uva 'Bordô' para seu cultivo na região de Bocaiuva do Sul-PR, caracterizar os estádios fenológicos, a demanda térmica e o momento de sua colheita. O experimento foi realizado em um vinhedo convencional, sustentado em espaldeira, no município de Bocaiuva do Sul, PR, em duas safras (2009/2010 e 2010/2011). As avaliações foram feitas desde a poda até a colheita sendo avaliados: estádios fenológicos, a exigência térmica e o momento de colheita por meio de análises químicas de sólidos solúveis, acidez titulável, pH e a relação sólidos solúveis/ acidez titulável. A uva 'Bordô' apresentou potencial para ser produzida em Bocaiuva do Sul, PR, cujo ciclo é de 154 a 171 dias e exigência térmica de 1524 a 1623 GD no período da poda à colheita. O momento ideal de colheita foi a primeira semana de fevereiro quando a uva 'Bordô' apresentou características mínimas exigidas pela legislação. Palavras-chave: pós-colheita, viticultura, Vitis labrusca Phenology, thermal requirement and ripening of the 'Bordo' grape in Bocaiuva do Sul, PR -Brazil ABSTRACTThe grapes cultivation is highly dependent on the climatic conditions of each region. Therefore to obtain high quality fruits it is essential to have knowledge of phenological stages, thermal demand of plant which helps the grower to program different cultural practices for vineyard which in turn reduce the cost of production and providing high quality raw material for the industry. The objective of this study was to evaluate the potential of the 'Bordo' grape for its cultivation in the region of Bocaiuva do Sul, PR, to characterize the phenological stages in days, the thermal demand and ideal time to harvest 'Bordo' grapes. The experiment was performed in a conventional orchard, conducted in trellis in the municipality of Bocaiuva do Sul, PR, harvests in 2009. Evaluations were made from pruning to harvest, were studied: the phenology, the thermal demand and timing of harvesting by means of chemical analyzes of SS, TA, pH and relation between SS/TA. The 'Bordo' grape has the potential to be produced in Bocaiuva do Sul-PR, with a cycle from 154 to 171 days and thermal demand from 1524 to 1623 GD during the pruning at harvest. The ideal time to harvest was the first week of February, when the 'Bordo' grapes already has the minimum characteristics required by law.
The knowledge of phenological stages and thermal requirement are important in vineyard management because provides information for production and quality of the grapes. This study had the objective to evaluate phenology and thermal demand of the grape cultivars Bordô, Concord, and BRS Carmem on rootstocks Paulsen 1103, IAC 766, and VR 043-43. The experiment was conducted in a family owned vineyard in Campo Largo, Paraná State, Brazil. The vineyard was carried out on ridges with semitrellis in 'T' systems conducting (Geneva Double Curtain trellis). The evaluations were assessed during the production cycles of 2011/2012 and 2012/2013. The phenology was evaluated with a scale of 13 phenological stages. The thermal demand was defined by calculating the degree-days accumulation (DD) from bud swelling until harvest stage. The cultivar BRS Carmem had the longest cycle, being influenced by the rootstock, IAC 766 e Paulsen 1103 showed opposite results for cycle time. The cultivar Concord was more stable; there was no influence of rootstock on the cycle or of the thermal demand on the two harvests. The duration of the phenological cycle in 2012/2013 was lower than on the first harvest. Thermal requirement of 'BRS Carmem' was influenced by tree different rootstocks, 'Concord' was not influenced, and the results to 'Bordô' were not consistent. Key words: Vitis labrusca, degree-day, American grapes, phenological behavior Resumo O conhecimento de estágios fenológicos e exigência térmica são importantes em gerenciamento de vinhedo porque providenciam informações para a produção e qualidade das uvas. Este trabalho objetivou avaliar a fenologia e exigência térmica das cultivares Bordô, Concord e BRS-Carmem sobre os porta-enxertos Paulsen-1103, IAC 766 'Campinas' e VR 043-43. O experimento foi conduzido na Região Metropolitana de Curitiba, num parreiral em propriedade de agricultura familiar, no município de Campo Largo, PR. O parreiral foi instalado em camalhões com sistema de condução em semilatada em 'T'. As avaliações foram realizadas nos ciclos de produção 2011/2012 e 2012/2013. A fenologia foi avaliada por uma escala fenológica com 13 estádios. A exigência térmica foi definida pelo cálculo do acúmulo de graus-dia (GD) desde o estádio de gema inchada até a colheita. A cultivar BRS Carmen apresentou o ciclo mais longo, sendo influenciada pelo porta-enxerto, IAC 766 e Paulsen 1103 apresentaram resultados opostos para duração do ciclo. A cultivar Concord foi mais estável, não sofrendo influência do porta-enxerto sobre o ciclo e sobre a demanda térmica nas duas safras avaliadas. A duração do ciclo fenológico na safra 2012/2013 foi menor se comparada à primeira safra. A exigência térmica de BRS Carmem foi influenciada pelos diferentes porta-enxertos, Concord não apresentou esta influencia, e os resultados para cultivar Bordô não foram consistentes.
Neste trabalho o objetivo foi avaliar o crescimento de mudas de chicória roxa ‘Palla Rossa’ (Cichorium intybus - Asteraceae) submetidas a diferentes doses do aminoácido ácido L-glutâmico (AG-30®). O experimento foi realizado na área de Olericultura Orgânica da Estação Experimental do Canguiri/UFPR. A semeadura foi realizada no dia 06/01/2012 em bandejas de poliestireno expandido com 200 células e mantidas em casa de vegetação. Os tratamentos foram dispostos em delineamento inteiramente casualizado com 4 repetições, e constaram de aplicação via foliar de três doses (0,2 ml L-1, 0,4 ml L-1 e 0,8 ml L-1) do produto AG-30® (ácido L-glutâmico 30%) e testemunha sem aplicação. As aplicações ocorreram aos 17 e 24 dias após a semeadura (DAS). Aos 31 DAS, as mudas foram coletadas e, avaliados o número médio de folhas, a altura média da parte aérea, a área média foliar, o volume médio de raiz, a massa seca média da parte área e das raízes, bem como o teor relativo de clorofila. Verificou-se que o produto AG-30® influenciou o crescimento de mudas de chicória roxa ‘Palla Rossa’, com destaque para a concentração 0,2 ml L-1, promovendo os maiores valores médios de volume radicular, área foliar e teor relativo de clorofila.
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