Cicero Deschamps

• Federal University of Paraná

Purpose Yerba mate (Ilex paraguariensis A.St.-Hil.) can provide many valuable phytochemicals such as methylxanthines, caffeine and theobromine, and caffeoylquinic acids (CQA or CGA– chlorogenic acids). It is necessary to establish cultivation protocols to meet the demand for raw materials with specific phytochemical profiles. Methods In this study...

Shading is one of the factors that influences the production of bioactive compounds in yerba mate leaves (Ilex paraguariensis). In this study, we simulated different shading levels in a new yerba mate cultivation system, semi-hydroponic inside a greenhouse. We evaluated how five levels of artificial shading influence on the bioactive compounds meth...

Yerba mate (Ilex paraguariensis) is a South American tree, and its leaves are used for beverages, cosmetics, pharmaceutical, and other products. The global market demands raw materials with specific phytochemical characteristics and continuous supply throughout the year. Currently, in the field cultivation systems, yerba mate mature leaves are harv...

Despite the great economic importance of yerba mate (Ilex paraguariensis A. St.-Hil.), information about clonal plantations and planting conditions of this tree is still scarce. Thus, we evaluated initial field establishment of five clonal yerba mate cultivars, planted at three seasons of the year (summer, autumn, and spring) in a shaded environmen...

The use of medicinal plants in the treatment of infections is a well-established practice in the context of public health, which has stimulated the exploration of secondary metabolites in the fight against bacterial resistance. Symphyopappus cuneatus (Asteraceae) is a botanical species both native and endemic to Brazil. Although numerous biological...

Barbados gooseberry (BGB) is a non-conventional vegetable highlighted for its nutritional value, particularly its protein content. However, there is a lack of scientific information for improving the plantation system of this plant. This research proposed to evaluate high-density systems to cultivate BGB plants for sprout production. The experiment...

Baccharis dracunculifolia DC. is a pioneer plant native from Brazil that has great importance due to its secondary metabolites (essential oil and Brazilian green propolis) and its potential in the recovery of degraded areas. The main goal of this study was to evaluate the propagation techniques of B. dracunculifolia by sexual reproduction and asexu...

Yerba mate (Ilex paraguariensis) produces several secondary metabolites of interest to the pharmaceutical industry, such as chlorogenic acids and methylxanthines. These compounds have been produced in vitro by callus culture from different species. However, for I. paraguariensis, no studies upon the production of these compounds in vitro have been...

Ilex paraguariensis (yerba mate) is a native species from South America and is a rich source of bioactive compounds. There is a lack of research efforts on the phytochemical investigation of callus culture from this species. In the present study, an effort was made to optimize callus culture conditions and to identify secondary compounds. Calli wer...

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Brazil is the world's third largest beer consumer and currently imports all of its hops for the brewing industry. Such a fact justifies the selection of hop genotypes adapted for cultivation locally, which requires high quality seeds and efficient sex determination of the seedlings. The objectives of this study were to develop a methodology to asse...

The Myrtaceae family has great occurrence in Brazil, mainly in the Atlantic Forest of the South and Southeast regions and presents potential for essential oil production. This work aimed to evaluate the essential oil yield and composition of the species Myrciaria delicatula, Campomanesia xantocarpha, Campomanesia aurea, Calyptranthes clusiifolia, M...

Introduction: Lippia alba (Mill.) NE Br. Ex P. Wilson, commonly known as bushy lippia, is a plant native to Brazil used to treat respiratory conditions as well as gastrointestinal and hepatic disorders. Objective: Evaluate the survival, rooting and budding of different types of cuttings of L. alba (linalool chemotype) using indolebutyric acid (IBA...

ntroduction: Piper aduncum L. (Piperaceae), commonly known as matico, produces an oil with repellent, antimicrobial, insecticidal, antitumor and antiprotozoal activity. Objective: Evaluate the rooting of P. aduncum cuttings of varying lengths in different substrates. Methods: P. aduncum branches and leaves were collected in February 2016 at Bom J...

Stevia rebaudiana Bertoni is a species with high economic importance because of the production of natural sweeteners with a low caloric value. The seed production of this species is irregular and micropropagation techniques raise the cost of seedling production. Thus, this study aimed to optimize the vegetative propagation of a Brazilian accession...

Piper cachimboense is recorded only for the Amazon region of Brazil and Colombia, and the objective of this study was to report the first phytochemical assessment of the composition of the essential oils (EOs) from this species collected in the Amazon rainforest, in Novo Progresso, Pará State, Brazil. Samples of leaves were subjected to hydrodistil...

The toxicities of essential oils (EOs) from 18 species of Brazilian Piperaceae were assessed on eggs of the velvetbean caterpillar, Anticarsia gemmatalis. Oils were extracted using steam distillation, and dilutions were made for bioassays at concentrations of 0.25, 0.5, 1.0, 2.0, and 4.0%. All EOs reduced larval hatching. The lowest lethal concentr...

The essential oil yield and composition of 17 species of the Asteraceae family were evaluated. Samples were obtained by hydrodistillation of the leaves and inflorescences and they were analyzed by GC-MS and GC-FID. A total of 13 species presented essential oils with yields ranging from 0.06 to 3.36% in fresh samples and from 0.07 to 2.53% in dried...

Stevia, a native species of South America, is commercially important as a source of the non-caloric diterpene glycosides stevioside and rebaudioside-A. Although it has been cultivated in southern Brazil, the production is not enough to meet the domestic market demand. This study evaluated biomass accumulation, morphological and physiological charac...

Piper cachimboense is recorded only for the Amazon region of Brazil and Colombia, and the objective of this study was to report the first phytochemical assessment of the composition of the essential oils (EOs) from this species collected in the Amazon rainforest, in Novo Progresso, Pará State, Brazil. Samples of leaves were subjected to hydrodistil...

Piper gaudichaudianum grows abundantly throughout the Brazilian Atlantic Forest. Essential oil extracted from this species has been reported to have larvicidal properties. The aim of the study was to characterize the essential oil (EO) of P. gaudichaudianum and its insecticide activity on the third instar larvae (L3) of Lucilia cuprina under labora...

Background: Flies that cause myiasis are considered one of the main ectoparasites affecting livestock. This pathology may produce a reduction in body development, compromises animal welfare, and in severe cases, can lead to death. Although the control of this pathology relies on the use of synthetic insecticides, drug failure has been reported worl...

This work aimed to evaluate the essential oil yield and composition of fresh and dried samples of native tree species in the Atlantic Forest of Parana State, South of Brazil. The essential oil extraction was carried out by hydrodistillation in a graduate Clevenger type apparatus and the chemical composition was analyzed by gas chromatography couple...

Actually, there is information shortage regarding of trade values in Brazilian essential oils exports, then it aim to consolídate in formation about essential oils exports during the years 2000 through 2015. It were analysed export values of 16 essential oils items from Data Analysis System of Foreign Trade Information (AliceWeb) database, and thei...

Baccharis articulata Pers., Baccharis trimera (Less) DC., Baccharis milleflora DC., Baccharis oblongifolia Pers., Baccharis anomala DC., Baccharis calvescens DC., Baccharis uncinella DC., Baccharis axillaris DC., Baccharis mesoneura DC. and Baccharis myriocephala DC. essential oils were obtained by hydrodistillation. Using gas chromatography/flame...

The objective of this work was to identify the Piper species with natural occurrence in the remaining segment of the Ombrófila Dense Rain Forest located in Morretes, PR, Brazil, and to determine the essential oil yield and composition. The essential oil extraction was carried out by hidrodestillation during two hours and the samples were analyzed b...

Essential oils from fresh Piperaceae leaves were obtained by hydrodistillation and analyzed by gas chromatography mass spectrometry (GC-MS), and a total of 68 components were identified. Principal components analysis results showed a chemical variability between species, with sesquiterpene compounds predominating in the majority of species analyzed...

This article reports a study on the extraction and evaluation of essential oil obtained from dried flowers of Eupatorium intermedium, a plant native to southern Brazil that belongs to the Asteraceae family. The hydrodistillation achieved a maximum yield of 1.01 wt% of essential oil. Regarding the chemical composition, by a qualitative analysis, the...

Drimys brasiliensis Miers is a native plant species to the Atlantic Forest, commonly known as cataia, and used as a stimulant, anti-diahrreal, antipyretic, among other properties. Dried and fresh leaves of cataia were collected in autumn/2012, submitted to hydrodistillation in a Clevenger graduated apparatus over a period of 4 hours after reaching...

The Myrtaceae family has great occurrence in Brazil, mainly in the Atlantic Forest of the South and Southeast regions and presents potential for essential oil production. This work aimed to evaluate the essential oil yield and composition of the species Myrciaria delicatula, Campomanesia xantocarpha, Campomanesia aurea, Calyptranthes clusiifolia, M...

Patchouli é uma espécie aromática pertencente à família Lamiaceae que possui óleo essencial com alto valor comercial devido à aplicação nas indústrias de higiene, cosméticos e perfumarias. Considerando as características voláteis e estruturas de armazenamento em diferentes órgãos das plantas aromáticas, a determinação de métodos de secagem é de ext...

The study aimed to evaluate the performance of soybean cultivars at different sowing dates and plant densities. Two experiments were carried out at FAPA (Fundação Agrária de Pesquisa Agropecuária [Agrarian Foundation for Agricultural and Cattle Research]), located at 25°33' S latitude, 51°29' W longitude and with 1.100 meters of altitude in Guarapu...

The study aimed to evaluate the performance of soybean cultivars at different sowing dates and plant densities. Two experiments were carried out at FAPA (Fundação Agrária de Pesquisa Agropecuária [Agrarian Foundation for Agricultural and Cattle Research]), located at 25?33’ S latitude, 51?29’ W longitude and with 1.100 meters of altitude in Guarapu...

Radiation and soil nutrient levels affect essential oil production in aromatic plants. The objective of this work was to evaluate the vegetative development, essential oil yield and composition of Mentha aquatica L. (linalool chemotype) and Mentha x piperita L. (linalool and menthol chemotypes) cultivated under different radiation levels (100%, 46%...

In the present study, the effects of two CaCl2.2H2O levels (440 and 1320 mg L-1) and two subcultures were evaluated on in vitro shoots of Lavandula angustifolia cv. Provence Blue. Ca2+ content of the apical, middle and basal portion of shoots was determined. Increasing CaCl2.2H2O level in the culture medium increased tissue Ca2+ content and decreas...

A camomila é uma planta herbácea, anual e aromática com várias propriedades medicinais. No Brasil, vem sendo cultivada em área representativa na região Sul devido, principalmente, às exigências climáticas da espécie, e por ter sido introduzida por imigrantes europeus nesta região. A colheita da camomila é realizada em várias colheitas, contudo, a i...

This work evaluated the effect of the application in the planting and maintenance of different levels of nitrogen fertilization (30, 60, 90 and 120 Kg ha-1) in the development of patchouli. The experiment was carried out at Joinville-SC from August 2006 the May 2007. The experimental design was completely randomized blocks subdivided in time, with...

The objective of this estudy was to evaluate the influence of cuttings related to their position in the branch (basal, middle and apical) and presence of leaves on rooting native yellow passionfruit (Passiflora actinia). Cuttings with two nodes were prepared 80-10 cm long, and his was planted inplastic pots containing vermiculite, maintained in a g...

The objective of this estudy was to evaluate the influence of cuttings related to their position in the branch (basal, middle and apical) and presence of leaves on rooting native yellow passionfruit ( Passiflora actinia). Cuttings with two nodes were prepared 80-10 cm long, and his was planted inplastic pots containing vermiculite, maintained in a...

Vegetative development, essential oil yield and composition of nine genetic materials of Lippia alba, linalool chemotype, were compared in the environmental conditions of Southern Brazil. Plants were propagated by stem cuttings and transferred to field in a completely randomized design with four replications and six plants each. The vegetative grow...

O processamento e a extração de óleo essencial do gengibre são de grande importância, pois podem interferirno rendimento e qualidade do óleo essencial. O objetivo deste trabalho foi avaliar diferentes formas deprocessamento e tempos de extração do óleo essencial de rizomas de dois genótipos de gengibre, provenientesdo município de Morretes (PR). A...

O louro (Laurus nobilis L.) é uma espécie de importância econômica, suas folhas são utilizadas na culinária e na extração de óleo essencial. Nas condições do Brasil, a única forma de multiplicar a espécie é via propagação vegetativa, sendo a estaquia considerada uma técnica de grande potencial para utilização. O presente trabalho teve por objetivo...

Pogostemon cablin Benth. possui importância econômica devido à produção de óleo essencial utilizado pelas indústrias farmacêuticas e de perfumarias. Dentre os fatores ambientais, a radiação é de extrema importância no desenvolvimento das plantas, onde sua limitação pode comprometer a produção. A aplicação de giberelinas promove o alongamento celula...

The genus Mentha has 18 species and many chemotypes with inter and intra specific differences. In spite of its great phytochemical diversity, the main economic interest on mint essential oil production is to obtain the constituent menthol. We evaluated the menthol production of 19 genotypes of three Mentha species. The experiment was carried out at...

Piper hispidinervum C.DC. is a plant native to the Amazon region, produces an essential oil rich in safrole. The aim of this study was to evaluate the effect of different methods of drying biomass in chemical composition of the essential oil of P. hispidinervum cultivated in Morretes (PR). The treatments were: fresh leaves; natural drying for 6 and...

The goal of this study was to evaluate commercial sources of phosphite and acibenzolar-S-methyl (ASM) followed by one fungicide application on the control of downy mildew, powdery mildew and asian soybean rust, reducing the number of fungicide applications and increasing the control spectrum of these soybean diseases. Two field experiments were car...

Lavandula angustifolia Mill. is an important producer of essential oil, which presents the difficulty of propagation stem cuttings. In this work the propagation of plant was carried out by micropropagation technique, in which certain conditions were evaluated in vitro. The micropropagated plants were grown in São Joaquim (SC). The essential oil of...

Patchouli accumulatea an essential oil on its leaves, and it is mainly used by the perfume industry. The purpose of this work was to determine the distillation time for the extraction of essential oils from the leaves of patchouli. The treatments included 1, 2, 3, 4, 5, 6, 7 and 8 hours of extraction through the hydrodistillation method, using a Cl...

Pogostemon cablin (Blanco) Benth., commonly known as patchouli, is an aromatic species used by the perfume industry due to its woody fragrance and the fixative characteristic of its essential oil. Factors affecting the content of the constituents of essential oils should be evaluated in order to obtain raw materials with better quality. The experim...

RESUMO: O gênero Mentha é cultivado mundialmente para a produção de óleo essencial, com ênfase no constituinte mentol, amplamente utilizado nas indústrias farmacêutica, cosmética, alimentícia e de higiene pessoal. Este trabalho teve como objetivo avaliar o efeito da utilização de diferentes estruturas de propagação e épocas de colheita de Mentha ca...

Menthol has economic importance to the flavor, food and pharmaceutical industries. Ten menthol mint (Mentha spp) genotypes were assessed for essential oil content and composition at Southern Brazil environmental conditions at two harvest times (February and May). The experimental design was in completely randomized blocks with a 10 x 2 factorial fo...

The cultivar Mandirituba is the only genetic material for chamomile cultivation in southern Brazil. Besides the limitations regarding floral buds and the yield of essential oil presented by this cultivar, phytosanitary problems have also been observed. The objectives of this work were to compare the genetic materials from the Netherlands, Denmark a...

Efficient and sustainable pasture management can be characterized as the control of the pastoral system, aiming at its greater production, better utilization and persistence, with positive impacts on animal performance. Forage production stems from the transformation of solar energy into organic compounds from photosynthesis, where the carbon from...

Lavandula angustifolia Miller (lavender), considered a hard-to-root species, is comprised of many varieties and horticultural forms, and genotypes from different provenances may present variance in rooting capacity. The objective of this experiment was to test different concentrations of indol-3-butyric acid (IBA) on rooting of eight (G1 to G8) L....

Even though the Lavandula species may be propagated by seeds, it should not be the preferred propagation method because it causes a great lack of uniformity. On the other hand, asexually propagated lavender crops would provide more homogeneous crops, and clones from high quality plant material would increase the odds for obtaining a higher quality...

Nitrogen fertilization affects the essential oil yield and composition of aromatic plants. The objective of this work was to evaluate the effect of nitrogen sources and doses on biomass production and essential oil yield and composition of M. x piperita L. The experimental design was in randomized blocks with four replications and the treatments in...

The genus Mentha is cultivated worldwide for essential oil production, with emphasis on its major constituent, menthol, which is used in the pharmaceutical, cosmetics, and food industries and for personal care. This work investigates the use of different propagation structures and harvesting times of Mentha canadensis L., in the Santa Catarina Stat...

Two experiments were carried out aiming to evaluate the ex vitro rooting of L. angustifolia cv. 'Provence Blue' treated with different concentrations (0, 2.5, 5.0 and 10mM) of indolebutyric acid (IBA) with talc as a vehicle to evaluated the ex vitro rooting of 'Vera', 'Provence Blue', 'English' and 'Elegance Ice' lavender cultivars. The experiments...

A produção de gengibre no Paraná concentra-se no município de Morretes, ocupando uma área de plantio de aproximadamente 300 ha. O objetivo deste trabalho foi avaliar o teor e a composição do óleo essencial de rizomas de gengibre produzidos em Morretes e submetidos a diferentes períodos de secagem em temperatura ambiente. O delineamento experimental...

The essential oil of Lavandula dentata L. has economic importance due to its utilization by pharmaceutical, cosmetic and personal care industries. The aim of this study was to evaluate the yield and composition of essential oil from lavender inflorescences and leaves in different development stages. The experimental design was completely randomized...

Essential oil production in aromatic plants is influenced by biotic and abiotic factors. The demand for these products has increased, and essential oils from the genus Mentha have been of great interest for pharmaceutical, cosmetic, food and agronomic industries, especially because of the compound menthol. This study aimed to evaluate the effect of...

Brazil is an important player in the essential oil world market, being the fourth largest producer, after India, China, and Indonesia. Most of this commercial standing is due to the citrus essential oils, since they are a byproduct of the large Brazilian orange juice industry. A few native aromatic species have been recognized as priority for germp...

The essential oil yield and quality on aromatic species is regulated by environmental conditions and vegetative development. The objective of this work was to evaluate the yield and composition of Thymus vulgaris L. essential oil from nearby Curitiba, PR. The essential oil was obtained from aerial fresh plants by hydrodistillation. The extraction w...

Melaleuca alternifolia Cheel. is an aromatic species of high economic interest due to the presence of essential oil in its leaf tissue. However, its seeds have low germinative potential, which has made difficult the obtaining of new genetic materials and the technological advance for production in Brazil. The present work aimed to determine a suita...

Lavandula species may be propagated by seeds. However, plants will present expressive variation both in size and essential oil content. Indole-3-butyric acid (IBA) is a growth regulator which efficiently stimulates rooting and the objective of this research was to observe the influence of different IBA concentrations on rooting of L. dentata cuttin...

Basil (Ocimum basilicum L.) essential oil phenylpropenes are synthesized and accumulate in peltate glandular trichomes and their content and composition depend on plant developmental stage. Studies on gene expression and enzymatic activity indicate that the phenylpropene biosynthetic genes are developmentally regulated. In this study, the methylcha...

The purpose of this research was Eucalyptus saligna in vitro regeneration and transformation with P5CSF129A gene, which encodes Δ1-pyrroline-5-carboxylate synthetase (P5CS), the key enzyme in proline biosynthesis. After selection of the most responsive genotype, shoot organogenesis was induced on leaf explants cultured on a callus induction medium...

The essential oil yield and quality on aromatic species is regulated by environmental conditions and vegetative development. The objective of this work was to evaluate the yield and composition of Thymus vulgaris L. essential oil from nearby Curitiba, PR. The essential oil was obtained from aerial fresh plants by hydrodistillation. The extraction w...

The effect of Saccharomyces cerevisiae was evaluated on the development of strawberry diseases and postharvest quality of fruits. The research was carried out in 2004 and 2005 in Paraná State, Brazil. Five different preparations of the yeast S. cerevisiae (a suspension of commercial fresh biological yeast for bakery, a suspension of yeast cells, a...

The effect of Saccharomyces cerevisiae was evaluated on the development of strawberry diseases and postharvest quality of fruits. The research was carried out in 2004 and 2005 in Paraná State, Brazil. Five different preparations of the yeast S. cerevisiae (a suspension of commercial fresh biological yeast for bakery, a suspension of yeast cells, a...

Avaliou-se o efeito de diferentes tipos de cobertura do solo e épocas de colheita sobre a produção de biomassa e o rendimento de óleo essencial de Melissa officinalis. O experimento foi conduzido na Estação Experimental do Canguiri da UFPR, no município de Pinhais-PR, de novembro de 2005 a maio de 2006. Os tratamentos testados foram acículas de pin...

The effect of covering and harvesting time on biomass production and essential oil production of Melissa officinalis was evaluated. The experiment was carried out at the Estação Experimental de Canguiri, Pinhais, Paraná State, Brazil, from November 2005 to May 2006. The treatments included pine needles, black plastic and control without covering. T...

Este trabalho foi realizado na UFPR, município de Pinhais-PR, de outubro de 2005 a junho de 2006. Avaliou-se a resposta do Ocimum gratissimum à adubação orgânica com composto de esterco de carneiro, verificando a viabilidade dessa prática para o aumento no rendimento de biomassa, na quantidade e qualidade de seu óleo essencial. As mudas foram plant...

This work was carried out at the Universidade Federal do Parana, Paraná State, Brazil, from October 2005 to June 2006. The effect of organic fertilization with sheep manure was evaluated on Ocimum gratissimum development and the viability of this practice was determined to increase biomass and essential oil yield and quality. The plants were spaced...

O conhecimento das relações entre porta-enxerto e copa é vital para produção de mudas sem problemas de compatibilidade. Nesse sentido, a atividade de peroxidases e a concentração de fenóis apresentam grande importância na união entre enxerto e porta-enxerto, influenciando na resposta de compatibilidade de enxertia. Objetivou-se, neste trabalho, ava...

The induction of phenylpropanoid essential oil metabolism by elicitors was investigated in basil (Ocimum basilicum L.). Plants were grown under a controlled hydroponic system and then subjected to three chemical elicitors. Significant increases in total essential oil and methylchavicol biosynthesis were observed following the elicitation with chito...

O presente trabalho buscou verificar os efeitos da aplicação de diferentes concentrações do ácido indolbutírico (AIB), em talco e em solução, no enraizamento de estacas caulinares de Tibouchina sellowiana (Cham.) Cogn. coletadas nas quatro estações do ano, bem como suas variações anatômicas e bioquímicas. Estacas semilenhosas foram tratadas com 0,...

O gênero Mentha compreende diversas espécies de interesse econômico por causa da produção de óleos essenciais. Recentemente, foram introduzidos no Brasil novos materiais genéticos para avaliação da adaptação em relação ao potencial de rendimento e composição do óleo essencial. No presente trabalho, foram comparadas essas características em cultivar...

The genus Mentha includes many species of economic interest due the essential oil production. Recently new genetic materials were introduced in Brazil to evaluate the adaptation related to essential oil yield and composition. In the present work, these characteristics were compared in six cultivars of the species Mentha x piperita L. (cv. Grapefrui...

Barley spot blotch, caused by the fungus Bipolaris sorokiniana (Sacc.) Shoem., leads to decreases in productivity and affects beer quality. The objective of the present study was to validate findings in laboratory and greenhouse experiments on biochemical responses that occur in malting barley cultivar BRS 195 when treated with elicitors of resista...

The genus Mentha includes many species of economic interest due the essential oil production. Recently new genetic materials were introduced in Brazil to evaluate the adaptation related to essential oil yield and composition. In the present work, these characteristics were compared in six cultivars of the species Mentha x piperita L. (cv. Grapefrui...

The present work tried to verify the effects of application of different concentration of indolebutyric acid (IBA) in talc in solution, in the rooting of cutting of Tibouchina sellowiana (Cham.) Cogn. collected in the four seasons, as well as its anatomical and biochemical variation. The semiharwood cuttings were treated with 0, 1500 and 3000 mg L-...

Piptocarpha angustifolia Dusén (Asteraceae) é uma espécie arbórea nativa brasileira pertencente à Floresta Ombrófila Mista, com potencial ambiental para recuperação de ecossistemas e produção madeireira. A propagação seminal desta espécie apresenta dificuldades devido a irregularidade na produção e coleta, aliadas a baixa germinação pela formação d...

The use of inductors of resistance in plants represents an alternative and a promising method to control fruit rots at post harvest. The experiment was carried out at Federal Technological University of Paraná – Dois Vizinhos – Campus, during 2004 with the objective to evaluate the induction of chitosan resistance and acibenzolar–S–methyl (ASM) on...

A diagrammatic scale was developed and valided to assess disease severity of rust in Menthe arvensis L., caused by Puccinia menthae. The scale was elaborated considering the maximum and minimum limits of disease severity observed in the field and the intermediate values folowed logarithmic increments according to the "Stimulus Law by Weber-Fechner"...

Recebido para publicação em 16/03/2006 Aceito para publicação em 21/07/2008 Desenvolvimento, rendimento e composição de óleo essencial de camomila [Chamomila recutita (L.) Rauschert] sob adubação orgânica e mineral AMARAL, W.

Chamomile has several pharmacological properties due to its essential oils stored in peltate glandular trichomes, which are mainly situated in flower heads. This work aimed at evaluating the effect of organic and mineral fertilization on the development and essential oil yield and composition of chamomile. The experiment was carried out in field co...

The disease spot blotch, caused by the fungi Bipolaris sorokiniana, is considered one of the most important phytosanitary problems of barley crop resulting on low productivity and damage on beer quality. The objective of this work was to evaluate the effect of the elicitors xanthan gum and alicin and fungicide epoxiconazole + pyraclostrobin on spot...

O patchouli (Pogostemon cablin), pertencente à família Lamiaceae, possui grande interesse comercial pela presença de óleo essencial, contido nas folhas, que é utilizado principalmente na indústria de perfumaria. O objetivo deste trabalho foi avaliar o enraizamento de estacas de patchouli, de acordo com o número de folhas e a região do ramo utilizad...

The induction of terpenoid biosynthesis has been observed in many plant species. The accumulation of the ter-penoid essential oils in basil (Ocimum basilicum L.) following elicitors treatment was investigated in this work. Plants that exhibited the same stage of development after approximately two weeks in a hydroponic system were selected for trea...

A diagramatic scale was developed and validated to assess dendrophoma severity in strawberry, caused by Dendrophoma obscurans (Ell &Ev.)H.W. Anderson. The scale was developed considering the maximum and minimum severity limits of disease observed in the field and the intermediate levels followed logarithmic increments according to the "Stimulus Law...

Uma escala diagramática foi desenvolvida e validada para quantificar a severidade da mancha-de-dendrophoma do morangueiro, causada por Dendrophoma obscurans (Ell &Ev.)H.W. Anderson. A escala considerou os limites de severidade mínima e máxima da doença observados no campo e os níveis intermediários seguiram incrementos logarítmicos, obedecendo-se à...

Para o controle da mancha marrom da cevada, causada pelo fungo Bipolaris sorokiniana, têm sido utilizados fungicidas e mais recentemente foi proposto o uso de elicitores. O objetivo deste trabalho foi avaliar o desenvolvimento de duas cultivares de cevada cervejeira, "BRS 195" e "BRS 225", em resposta à aplicação de elicitores goma xantana e alicin...