Rodrigues João Domingos

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• Full/Emeritus Professor
• Professor at São Paulo State University

Plant growth-promoting bacteria (PGPB) naturally occur in the environment and offer various plant benefits. The Bacillus genus, part of the PGPB group, is effective in post-harvest disease control and may influence fruit quality mechanisms. The objective was to evaluate the pre-harvest application of different doses of a commercial B. subtilis form...

O alecrim de jardim (Rosmarinus officinalis L.) é uma espécie medicinal, aromática e condimentar amplamente utilizada pela população mundial para diversos fins. Esta espécie apresenta dificuldade de enraizamento e, portanto, este trabalho foi conduzido com o objetivo de se estabelecer tratamentos que possam promover e acelerar o enraizamento de est...

Tomatoes are widely consumed globally, however their high perishability demands secure storage methods to mitigate post-harvest losses. This research aimed to investigate the impact of a Bacillus subtilis QST 713-based biofungicide on the post-harvest characteristics of tomatoes during storage. The experimental design adopted was a randomized block...

The increasing incidence of heat stress due to global climate change poses a significant challenge to avocado (Persea americana) cultivation, particularly in regions with intense solar radiation. This review evaluates sun protection strategies, focusing on the efficacy of different sunscreen products such as kaolin, titanium dioxide, and calcium ox...

The yellow (Passiflora edulis) and sweet (Passiflora alata) passion fruit plants hold significant economic importance in tropical fruit cultivation, valued not only for the quality of their fruit but also for their medicinal properties. Conventional propagation through seeds faces challenges due to irregular and slow germination, affecting the time...

Capsicum annuum L. has worldwide distribution, but drought has limited its production. There is a lack of research to better understand how this species copes with drought stress, whether it is reversible, and the effects of mitigating agents such as salicylic acid (SA). Therefore, this study aimed to understand the mechanisms of action of SA and r...

The phenolic profile and antioxidant activity of whole grape juices from Vitis labrusca and Brazilian hybrids in two training systems were analyzed. Genotypes of V. labrusca (‘Bordô’ and ‘Isabel’) and Brazilian hybrids (‘IAC 138-22 Máximo’ and ‘BRS Violeta’) were grafted onto the rootstock ‘IAC 766 Campinas’ (106-8 ‘Mgt’ × Vitis caribaea) and train...

The propagation of citrus seedlings is accomplished through grafting, utilizing seeds for the production of rootstocks. The germination of certain seeds may be low and uneven, complicating the production of high-quality seedlings. The use of plant growth regulators (PGRs) is a viable alternative to improve the quality of seedling production, as the...

The choice of training system impacts the architecture and physiological characteristics of grapevines, affecting grape production and quality. Continuous studies are necessary to optimize viticulture production in Brazil. This study aimed to evaluate the effects of rootstocks and different training systems on the production and quality of ‘IAC 138...

Abiotic stresses, such as water limitation, are significant limiting factors in basil production. One alternative to mitigate the harmful effects of this stress on plants is using plant growth regulators. This study’s objective is to evaluate different doses of plant regulators in basil under water deficiency conditions. A randomized block experime...

The primary focus of hop cultivation is the brewing industry. Brazil is one of the largest producers and consumers of beer worldwide and therefore one of the largest importers of hops. Therefore, it is essential to develop research that promotes the national production of hops. This study aimed to analyze the photosynthetic, morphometric and produc...

Water availability is a limiting factor for plant production, especially in Brazilian semi-arid regions. The main aim of the study was to investigate the physiological effects of drought during the fruiting stage of watermelon cultivation. A completely randomized block design with four replications and six treatments varied by the number of lateral...

Hops are grown mainly for the brewing market due to the rich chemical composition that gives beer aroma and bitterness. Brazil is one of the largest beer producers and consumers in the world and one of the largest hop importers. There is growing demand and interest in producing hops for domestic supply; however, as this crop originates from a tempe...

Farmers often use glyphosate for cost-effective land clearance to streamline coffee harvest processes despite recommendations against its application near the harvest period. However, as set by national and international regulatory authorities, this practice poses a high risk of exceeding the maximum residue limit (MRL) for glyphosate in coffee bea...

The use of low-quality water, with high salt concentrations, can cause several changes in plant metabolism, requiring strategies to facilitate its use in agriculture. Nitric oxide (NO) is an alternative among biological or synthetic substances that has promising effects on the physiological and biochemical responses of plants under salt stress cond...

Objetivou-se avaliar respostas fisiológicas e relações hídricas na brotação de gemas de plantas de Vitis vinifera L. submetidas ao frio e deficiência hídrica. O delineamento experimental foi inteiramente casualizado, em esquema de parcela subdividida (3 x 6), onde a parcela está representada pelos tratamentos: 1. Controle (25-30 oC / 60-70% umidade...

Crops are constantly threatened by salinity. Nitric oxide (NO) is an attenuating agent for salt stress; however, the specific roles of NO in gas exchange and lettuce production are not well established. The objective of this study was to evaluate the application of different concentrations of sodium nitroprusside (SNP) as an agent to mitigate salt...

Water deficiency is one of the most limiting abiotic factors to sugarcane world production (Saccharum spp.). Data on chlorophyll content and gas exchange are used to select genotypes tolerant to water deficit. However, these variables are influenced by environmental factors, which vary intensely throughout the day. Thus, this research aimed to eva...

The interaction between variety, rootstock, and trellis height is important for grapevine management, mainly for producing new varieties of grapes for juice and wine in new wine-growing regions with high production potential. Then, this study aimed to evaluate the rootstocks and trellis height influence on photosynthesis, biochemical, and yield per...

The presence of weeds in forest estates is considered one of the biggest problems in the implantation, maintenance, and renovation of eucalyptus plantations. This research aims to evaluate the phytotoxicity of herbicides on eucalyptus and I. nil. The experiment was installed inside a greenhouse in a completely randomized design with five replicatio...

Basil is susceptible to biotic or abiotic stress, negatively interfering with growth and production. Thus, the objective of this work was to evaluate the physiological effects of the application of plant regulators in basil plants that suffer from water deficit. The experiment was conducted in a randomized block design (RBD) in a 2 × 4 factorial sc...

The use of fungicides from the strobilurin and carboxamide groups demonstrates an effect on photosynthetic efficiency by increasing CO2 assimilation and, consequently, plant productivity, due to better a physiological performance. The objective was to evaluate the effect of the application of these fungicides on the physiology and yield of tomato p...

p>A espécie vegetal Vasconcellea quercifolia A. St.-Hil. é nativa do Brasil, promissora para a agricultura, com grande importância ecológica e grande consumo em algumas regiões. Neste estudo objetivou-se analisar a fenologia reprodutiva e fenologia vegetativa em uma população natural da espécie. Foram realizados os levantamentos durante 25 meses, o...

Salicylic acid (SA) is an important plant regulator reported as a mitigator of water deficit in plants, however without a recommendation for use in field conditions. Thus, this research aims to validate the use of SA under field conditions in regions with low water availability. For that, we evaluated CO2 assimilation (A), stomatal conductance (gs)...

Because there is a close relationship between plant physiological response and crop performance, the current study aims to evaluate the photosynthetic efficiency and productive performance of vegetable versus conventional soybean cultivars for edamame production. The study was conducted at the School of Agriculture (FCA UNESP), Botucatu-SP, Brazil....

Hormonal balance is important for plant metabolism and, consequently, berry development of grapevines (Vitis vinifera L.). Exogenous application of plant growth regulators (PGRs) combined with mineral elements, in satisfactory dosages, can promotes physiologic efficiency. We investigated the effect of foliar application of PGRs alone or combined wi...

The use of physical protectors has been shown to be an efficient technique for success direct sowing of different species, mainly in native plants. By having in view of the importance of the species Peltophorum dubium for the use of repopulation of degraded areas, afforestation and landscaping, the behavior is determined physiology of their seedlin...

Tomatoes are the most important and grown vegetable crop in the world. The salicylic acid (SA) application could improve crop yields due the positive physiological effects of this plant growth regulator. Thus, this study aimed to evaluate the possible effects of SA application on leaf regarding the intensification of antioxidant enzymes activities,...

The aim of this study was to evaluate the application effects of fungicides based on strobilurins and carboxamides on the physiology, management of Alternaria sp. and production of tomato fruits in a protected environment. Two experiments were carried out in Salto-SP in 2018 and 2019. The randomized block design was used, with seven treatments: ino...

High solar radiation in tropical regions can affect the development, physiology, and biochemistry of plants. Our aim with this research was to evaluate the biochemical responses and production of iceberg lettuce cultivars under environments with different shadings. An experiment under field conditions was installed in a 4 × 4 factorial scheme. Four...

Management with synthetic fungicides in the control of phytopathogens in viticulture can cause environmental pollution and contamination with residues in grape cluster. The objective of this study was to verify the effect of aqueous cinnamon extract on the in vitro and in vivo control of Plasmopara viticola on catalase activity on ‘Isabel Precoce’...

: The objective of this experiment was to study the effects of different concentrations of the plant growth regulators prohexadione-calcium (ProCa) on the growth control of tomato seedlings. The experiment was conducted in the forest seedling nursery of the Faculty of Agronomic Sciences - UNESP, Botucatu Campus-SP. The experimental design was compl...

O objetivo do estudo foi avaliar os efeitos de diferentes substratos na produção de mudas de cultivares de manjericão (Ocimum basicilicum L.). O delineamento experimental foi o inteiramente casualizado, com cinco tipos de substratos (Carolina®, Provaso®, Provaso® + Fibra de coco, Fibra de coco + Turfa e Fibra de coco), sendo estudado em duas cultiv...

The use of physical protectors has been shown to be an efficient technique for successful direct seeding of different species, especially in native plants. Considering the importance of the species Peltophorum dubium for use in the repopulation of degraded areas, afforestation and landscaping, the physiological behavior of its seedlings was determi...

O objetivo deste trabalho foi avaliar os efeitos de quatro reguladores vegetais- 2,4-D; NAA; GA3 e STIMULATE- nas características físico-químicas das Cultivares de melancia, Crimson Sweet e Charleston Gray. O experimento foi realizado no campo do DTCS-UNEB, Juazeiro-Bahia, entre janeiro e abril de 2011. Bandejas de polipropileno com substrato Vivat...

This work aimed to study the production of ‘Niagara Rosada’ seedlings in an environment located at Botucatu, state of São Paulo, as well as seedlings of ‘Isabel Precoce’ and ‘Thompson Seedless’ on rootstock ‘IAC 766’ in environments in Petrolina, state of Pernambuco, and Juazeiro, state of Bahia, using plant growth regulators, polyamines and cytoki...

We hypothesized that phytohormones and essential mineral nutrients influence the duration of leaf photosynthetic activity, fruit production and quality. We used a randomized block design, with four treatments and six replicates. Two commercial products were studied: Stimulate® (Stim), which is composed of a mixture of 0.009% cytokinin [N6-furfuryla...

Usually, fungicides are used to control and prevent diseases, however, a group of fungicides called strobilurins has brought about a new possibility of use for these products: the physiological effects. This group of fungicides modifies the plant physiology, through changes in metabolism and growth, which increases crop yield. Another group of fung...

The exploitation of the existing genetic variability for the physiological traits related to the yield and quality of maize forage can assist in the development of superior inbred lines and hybrids. The objective of this work was to evaluate the general and the specific combining ability and the nature of gene effects of physiological and chemical...

Resumo Para que ocorra o controle de doenças na pós-colheita de uvas, são utilizados agroquímicos que, apesar de eficientes, podem causar problemas à saúde humana. Neste sentido, o presente trabalho tem o objetivo de verificar o potencial dos compostos voláteis presentes no óleo essencial de pitanga (OEP), guaçatonga (OEG) e melaleuca (OEM) no cont...

In order to guarantee better results in the rooting of cuttings of some fruit species, it is necessary to determine the best time for the removal of the branches and making the cuttings that will be used as vegetative propagules in the method of propagation by cuttings. Apical and basal pinheira (Annona squamosa L.), gravioleira (Annona muricata L....

Abstract: Photosynthesis is directly proportional to light and the stomatal aperture reduces with the decrease in irradiance. The increase in irradiance reduces the respiration and photorespiration, besides increasing CO2 fixation. As grafting induces significant changes in the growth and development of the plant, the present work aimed to evaluate...

The objective of this work was to evaluate the effect of different concentrations of bioregulators on the germination and emergence of jiló seedlings. Two independent experiments were carried out, being the first experiment in chamber type BOD, evaluating the germination and seed vigor as a function of different concentrations of plant regulators a...

Salicylic acid (SA) and acibenzolar-S-methyl (ASM) can be used as biotic/abiotic stress attenuators in plants, thus, there are few studies that reduce the negative effects of herbicide use on plants. Therefore, this study aimed the effect of SA and ASM as attenuators of phytointoxication caused by chlorimuron-ethyl in soybean crop. The experiment w...

A propagação por estaquia surge como alternativa para garantir produção de mudas uniforme e geneticamente homogêneas. Estacas apicais de pinheira (Annona squamosa L.), gravioleira (Annona muricata L.) e a atemoeira (Annona cherimola L. x Annona squamosa L.) foram retiradas em duas épocas do ano, com 15cm de comprimento, com dois pares de folhas cor...

Este é um artigo publicado em acesso aberto (Open Access) sob a licença Creative Commons Attribution, que permite uso, distribuição e reprodução em qualquer meio, sem restrições desde que o trabalho original seja corretamente citado. Resumo Para que ocorra o controle de doenças na pós-colheita de uvas, são utilizados agroquímicos que, apesar de efi...

The effects of adverse climate constrain vegetable production, and protected cultivation has shown to be a promising technique in maximizing yield. However, protected environments might change with meteorological elements, particularly solar radiation, consequently affecting gas exchanges. The aim of this study was to assess gas exchanges of tomato...

During two years (2015 and 2016), an experiment was carried out to investigate the effects of the application of strobilurin and carboxamides on the photosynthetic efficiency and yield of tomato plants inoculated with A. solani grown in greenhouse in southern Brazil. The experimental design was randomized blocks with five replicates and seven treat...

The objective of this study was to evaluate the effect of the isolated and combined foliar application of boron, calcium, and the plant growth regulator Stimulate® on fruit yield and gas exchange in bell peppers. The evaluated treatments were boron, calcium, Stimulate, boron + calcium, boron + Stimulate, calcium + Stimulate, boron + calcium + Stimu...

Clubroot (Plasmodiophora brassicae Woronin) is a disease that attacks all brassicaceae and that can make their cultivation unfeasible. The objective of this research was to evaluate the efficiency of 3 fungicides with physiological effect, and one resistance inducer product that lessens the reproduction of Plasmodiophora brassicae in the cultivatio...

The grafting of two cucumber scions (Cucumis sativus L.)—Taiko hybrid and Tsuyoi hybrid—onto a Tropical hybrid pumpkin rootstock (Cucurbita moschata L.) was studied. The study was conducted in a greenhouse. Plants grafted using the tongue approach grafting technique were compared with ungrafted plants. We evaluated the initial establishment of graf...

The tomato fruit is rich in antioxidant compounds and has great nutritional and economic importance, annually promoting research on the nutritional and productive characteristics. The present study aimed to evaluate whether foliar application of commercial products based on growth regulators [auxin, cytokinin and gibberellin (Ax+CK+GA)], micronutri...

In tomato, grafting is being used as a preventive measurement of diseases control. During the grafting process, plants tend to overproduce reactive oxygen species in response to injury, controlling oxidative stress. It may be an important factor in achieving success in grafting. The present work aimed to evaluate if the before and after grafting ap...

Efeitos do plantio direto e do preparo convencional sobre alguns atributos físicos de um latossolo vermelho-escuro argiloso, sob pivô central

PRODUÇÃO DE PEPINO (Cucumis sativus L.), ENXERTADO E NÃO ENXERTADO, SUBMETIDO À ADUBAÇÃO CONVENCIONAL EM COBERTURA E VIA FERTIRRIGAÇÃO, EM CULTIVO PROTEGIDO Eurides Küster Macedo JuniorUniversidade Estadual do Oeste do Paraná/Unioeste/Agronomia-Campus de Marechal Cândido Rondon - Fone: 45-254-3216 - E mail:kuster@unioeste.brRua Pernambuco, 1777 - C...

ANÁLISE DE CRESCIMENTO NA CULTURA DA BATATA (Solanum tuberosum ssp Tuberosum), SUBMETIDA A DIFERENTES LÂMINAS DE IRRIGAÇÃO: RAZÃO TUBÉRCULO-PARTE AÉREA, ÁREA FOLIAR ESPECÍFICA, RAZÃO DE ÁREA FOLIAR E RAZÃO DE MASSA FOLIAR[1] Antenor de Oliveira Aguiar NettoUniversidade Federal de Sergipe, Departamento de Engenharia Agronômica, CEP: 49100-000, São C...

Este livro aborda a fisiologia da produção de cana-de-açúcar contemplando os seguintes aspectos: crescimento e desenvolvimento, ação hormonal (auxinas, giberelinas, brassinosteróides, citocininas e reguladores vegetais estimuladores de enraizamento), fenologia, metabolismo fotossintético, florescimento e maturação. Além desse enfoque, aborda de for...

The tomato fruit is rich in antioxidant compounds and has great nutritional and economic importance, annually promoting research on the nutritional and productive characteristics. The present study aimed to evaluate whether foliar application of commercial products based on growth regulators [auxin, cytokinin and gibberellin (Ax+CK+GA)], micronutri...

The aim of this work was to study the effect of different active ingredients composed by triazoles on yield, yield components and growth rate of soybean plants in Guarapuava (PR). Six products (Ciproconazole (Alto100®), Difeconazole (Score®), Epoxiconazole (Rubric®), Metconazole (Caramba 90®), Propiconazole (Tilt®) and Tebuconazole (Folicur 200 EC®...

The current study aimed to evaluate the effect of indole butyric acid (IBA) and boric acid to induce rooting on atemoya “Thompson” cuttings. A randomized block design with 10 treatments and four blocks was laid out. The treatments consisted in the use of different levels of IBA (i.e., 0, 500, 1,000, 2,000 and 4,000 mg/L) with or without boric acid...

RESUMO Redução no ciclo e uniformidade na maturação de frutos são características desejadas para a colheita mecanizada da cultura da mamona. O objetivo do presente trabalho foi estudar o efeito da limitação do crescimento secundário sobre o crescimento e os parâmetros produtivos da mamona. O experimento de campo foi conduzido entre fevereiro e maio...

Rubi' table grape has wide acceptance of the consumer market due to its affordable price and attractive color as a function of the accumulation of anthocyanins. However, environmental conditions do not always favor the suitable accumulation of these pigments, resulting in commercial devaluation and nutritional depreciation of fruits. Thus, the pres...

Strobilurins are fungicides with beneficial physiological effects on crop yield due to promotion of net carbon assimilation, nitrate reductase enzyme activity, stress tolerance and hormonal balance. The carboxamides complement the action of the strobilurins when applied alternately or together. This study aimed to evaluate the effect of application...

This study aimed at evaluating the germination and the growth of eggplant (cultivar ‘Embu’) seedlings submitted to imbibition in GA3 and GA4+7+Benzyladenine (BA). The experiment was carried out under laboratory and greenhouse conditions, adopting a completely randomized design, in a 2 x 6 factorial arrangement, i.e. two plant growth regulators (GA3...

We characterized the pollination and fecundation times in soybean flowers and evaluate the effects of kinetin and calcium applications on physiological and productive traits of soybean plants during the reproductive stage. The anatomical study of flowers of eight soybean cultivars showed that fecundation occurred in closed flowers with visible peta...

Until recently, fungicides were used exclusively for disease control; however observations of physiological effects brought a new concept to the use of these products. Strobilurins have positive physiological effects on crop yield, due to the increase of liquid photosynthesis and better hormonal balance. However, boscalid complements the action of...

A utilização de protetores físicos tem se mostrado uma eficiente técnica para o sucesso da semeadura direta de diferentes espécies, principalmente em plantas nativas. Tendo em vista a importância da espécie Peltophorum dubium para a utilização no repovoamento de áreas degradadas, arborização e paisagismo, objetivou-se determinar o comportamento fis...

In this study we aimed to evaluate the effect of using the mixture of plant growth regulators auxin, gibberellin and cytokinin in the physiological behavior and productive components of cabbage plants hybrid Fuyutoyo®. The experimental design was completely randomized, with four replications, evaluating five doses of the mixture of plant growth reg...

RESUMO: A utilização de protetores físicos tem se mostrado uma eficiente técnica para o sucesso da semeadura direta de diferentes espécies, principalmente em plantas nativas. Tendo em vista a importância da espécie Peltophorum dubium para a utilização no repovoamento de áreas degradadas, arborização e paisagismo, objetivou-se determinar o comportam...

Key message Fine roots of orange trees reached a depth of approx. 6 m in a sandy tropical soil. Root area index was more responsive to irrigation than leaf area index. Abstract Although the crucial role of deep rooting on the hydraulic functioning of tropical trees has been pointed out, studies dealing with root development below 2 m are still sca...

Several physiological and environmental factors can influence the development and growth of vines cultivated in irrigated areas of the Brazilian semi-arid region. Therefore, it is necessary to characterize the phenology of ‘Sweet Sunshine’ grapevine under Sub-medium São Francisco Valley, Brazil conditions in order to set up the managements employed...

This study aimed to evaluate the effect of plant growth regulators and shading on seed germination of macadamia nut trees. The experiment was conducted in a seedling production nursery of the company "QueenNut Macadâmia" located in the "Palmeiras" Farm, Dois Córregos, São Paulo (SP) state, Brazil. The Treatments were T1: water (control) under a sha...

The utilization of physical protectors has been considered an efficient technique for direct sowing of different species, mainly native ones. Based on the importance of the species Peltophorum dubium for revegetation of degraded areas, tree planting and landscaping, this study evaluated gas exchanges in canafistula seedlings under the influence of...

Some factors, such as yield increase and production cost reduction, must still be assessed as a way toimprove the sweet sorghum success prospects. The use of plant growth regulator mixtures has shown significant results in crop yield.Nitrogen assimilation stands out as one of the main limiting factors in plant production. Given the physiological ef...

Major problem affecting some upland rice cultivars is the increase in plant size when subjected to high doses of nitrogen fertilizer, leading to high levels of lodging. A method to reduce the height of upland rice, and therefore lodging, would be to use plant growth regulators. However, little information exists on the effect of these regulators on...

The castor bean shows great potential for cultivation under the conditions found in Brazil, however, in order to achieve high productivity and introduce the crop into the Brazilian agricultural system, ever more efficient methods of crop management should be developed. The aim of this study was to evaluate the agronomic characteristics and producti...

The utilization of physical protectors has been considered an efficient technique for direct sowing of different species, mainly native ones. Based on the importance of the species Peltophorum dubium for revegetation of degraded areas, tree planting and landscaping, this study evaluated gas exchanges in canafistula seedlings under the influence of...

EFEITOS DO DÉFICIT HÍDRICO SOBRE A CULTURA DO CAUPI, Ev EMAPA-821. III-PRODUÇÃO

Resumo O objetivo do trabalho foi avaliar o comportamento agronômico e de pós-colheita do tomateiro de crescimento indeterminado cv. Débora Plus em função de doses crescentes de Etil-Trinexapac (ET). O trabalho foi realizado na área experimental do Núcleo de Pesquisa em Hortaliças (NUPH) da Universidade Estadual do Centro-Oeste (UNICENTRO), Guarapu...

Resumo O objetivo do trabalho foi avaliar o comportamento agronômico e de pós-colheita do tomateiro de crescimento indeterminado cv. Débora Plus em função de doses crescentes de Etil-Trinexapac (ET). O trabalho foi realizado na área experimental do Núcleo de Pesquisa em Hortaliças (NUPH) da Universidade Estadual do Centro-Oeste (UNICENTRO), Guarapu...

The objective of this study was to evaluate the effects of different levels of pyraclostrobin on bean (Phaseolus vulgaris L.) plants under different soil water tensions, on carboxylate parameters, on the activity of enzymes related to combat reactive oxygen species (ROS) and on grain yield. Randomized blocks in a split-plot design were used with th...

O objetivo do presente trabalho foi avaliar os efeitos de diferentes doses de piraclostrobina em plantas de feijao ( Phaseolus vulgaris L.) submetidos a diferentes tensoes de agua no solo, nos parâmetros carboxilativos, na atividade de enzimas ligadas ao combate de especies reativas de oxigenio (ERO) e a produtividade de graos. O delineamento exper...

Este trabalho teve como objetivo comparar duas variedades de videira cultivadas em Portugal, Syrah e Touriga Nacional, em termos de suas respostas fisiológicas e bioquímicas a um ciclo de estresse hídrico severo seguido de reidratação. Os tratamentos consistiram em videiras continuamente regadas (FI) e videiras não regadas durante 21 dias e reidrat...

The effect of ultrasound and osmotic dehydration pretreatments on papaya drying kinetics was investigated. The ultrasound pretreatment was carried out in an ultrasonic bath at 30 °C. The osmotic pretreatment in sucrose solution was carried out in an incubator at 34 °C and agitation of 80 rpm for 210 min. The drying process was conducted in a fixed...

The present study aimed to test the hypothesis that different levels of the availability of mineral nutrients from Hoagland and Arnon's (1950) nutrient solution no. 2 affect the photosynthesis, ionic concentration and biomass production in seedlings of Annona emarginata (Schltdl.) H. Rainer variety ‘terra-fria’. Seedlings were grown in a hydroponic...

This work had the purpose to study the physiological effects of pyraclostrobin, boscalid, plant growth regulators and plant extract on the accumulation of carbohydrates during the development of tomato plants (Solanum lycopersicum L.), hybrid Giuliana, in protected environment conditions. The treatments were: T1- control; T2- pyraclostrobin 0.2 g L...

Studies of physiological parameters associated with crop performance and growth in different groups of upland rice (Oryza sativa L.) may support plant breeding programs. We evaluated the role of gas exchange rates and dry matter accumulation (DMA) as traits responsible for yields in a traditional (cv. ‘Caiapó’), intermediate (cv. ‘Primavera’) and m...

Nitrogen (N) is the most limiting nutrient for corn production. Thereby, the goal of the paper was to evaluate inoculation methods of Azospirillum brasilense in order to partially supply N required by the crop. The experiment was carried out in Guarapuava, PR, Brasil, in 2011/2012 growing season. Randomized blocks with factorial 3 inoculation metho...

Este trabalho teve como objetivo estudar a variação nos teores de carboidratos, antes e após a formação de raízes e brotação em estacas de videira do porta-enxerto ‘IAC 572’ plantados em diferentes substratos (composto orgânico e substrato comercial Carolina) tratadas ou não com ácido indolilbutírico (2000 mg L-1). Os tratamentos constituíram-...