Mustafa Kemal Üniversitesi Tarım Bilimleri Dergisi
Aims: The goal of this investigation was to examine how different dosages of Viva BR® biostimulan... more Aims: The goal of this investigation was to examine how different dosages of Viva BR® biostimulant affected the yield and quality of beet seedlings of Early Wonder Tall Top variety.Methods and Results: The experiment was carried out at intervals of 7 days, the first being at 7 days after sowing (DAS) until 28 DAS, totaling 5 applications (0 (control), 7, 14, 21 and 28 DAS) in the greenhouse of the Universidade Tuiuti do Paraná/Brazil, in a completely randomized design.Conclusions: It is concluded that the application via soil of the Viva BR® biostimulant had a positive impact on the growth of beet seedlings.Significance and Impact of the Study: In warm climates, Beta vulgaris L. (beet) of the Chenopodiaceae family predominates and its cultivated intensively in Brazil's Southeast and South regions. The seedling cultivation phase identifies the crops early establishment in the field in order to ensure stand consistency and appropriate ultimate productivity. Among the diverse techn...
It is known that the use of resistant cultivars and mineral nutrition associated with humic subst... more It is known that the use of resistant cultivars and mineral nutrition associated with humic substances, such as humic and fulvic acids, can favor plant development, promoting aerial parts and roots growth, being a viable technique for better vegetative development of plants in general, and, consequently, for better final productivity. The aim of this work was to evaluate the effect of the fertilizer Bio Humate®, based on humic substances, in the vegetative development of Justyne® hybrid tomatoes. The experiment was conducted in greenhouses of University of Tuiuti do Paraná/Brazil with a completely randomized experimental design, arranged in a 4 x 2 factorial scheme with three doses of the commercial product’s application (1.5, 2, and 2.5 mL L-1 of Bio Humate®) on three repetitions Justyne® hybrid tomato seedlings that were subjected to samplings at 42nd and 56th days after transplanting (DAT)). The treatments were applied every 14 days, starting at 7 DAT at 42 and 56 DAT. The soil a...
In Brazil, cauliflower crop (Brassica oleracea var. botrytis) is mainly a backyard gardening prod... more In Brazil, cauliflower crop (Brassica oleracea var. botrytis) is mainly a backyard gardening production, conducted in small areas of the country. However, its farming practice requires manpower as the production is mostly driven by family farming. Indeed, demand in labor and in sums, further coupled with environmental concerns and high production costs, seeks otherwise alternatives in providing greater efficiency, generating greater yield and quality, compared to other vegetables. Thus, the present study aimed to evaluate the biostimulant effect based on amino acids associated with a nutrient complex with high calcium and boron content in cauliflower cultivation. The experiment was carried out in the municipality of Campo Largo-PR, Brazil in a completely randomized design, with four treatments and three replications. The treatments consisted of 0.50; 0.75 and 1.0ml L-1 doses, plus the control treatment (producer standard), which follows all recommendations for culture, without the a...
Resumo - O brocolis (Brassica oleracea var. italica) e uma hortalica da familia das Brassicas cul... more Resumo - O brocolis (Brassica oleracea var. italica) e uma hortalica da familia das Brassicas cultivado em diversas regioes do mundo, caracteristico de pequenas propriedades, com potencial para cultivos orgânicos, porem e necessario que sejam realizadas pesquisas que disponibilizem produtos que atendam a legislacao orgânica, como biofertilizantes a base de hidrolisados proteicos. Objetivou-se com este trabalho avaliar o efeito da aplicacao de hidrolisado proteico contendo aminoacidos na producao de duas cultivares de brocolis, em sistema de cultivo orgânico. Os tratamentos foram dispostos em delineamento inteiramente casualizado, em esquema fatorial 2 x 4, com quatro repeticoes, sendo duas cultivares (Belstar e Fiesta) e quatro tratamentos: testemunha e aplicacao via foliar de solucoes com as seguintes concentracoes de hidrolisado proteico: 2 mL L -1 , 4 mL L -1 e 8 mL L -1 . As aplicacoes foram realizadas semanalmente com inicio aos sete e termino aos 63 dias apos o transplantio da...
Previous studies have demonstrated that moderate water restrictions and enhanced CO2 concentratio... more Previous studies have demonstrated that moderate water restrictions and enhanced CO2 concentration can maintain or improve yield and accumulation of secondary compounds in lettuce under greenhouse conditions. Therefore, the aim of this study was to evaluate the combination of reduced soil moisture and carbon fertilization in shoot fresh weight (FW) and antioxidant capacity of two Batavia lettuce cultivars (Batabia Rubia Munguia; BRM and Maravilla de Verano; MV). Moderate water restriction treatment was equivalent to 2/3 of the field capacity and elevated CO2 concentration (ECO2) was fixed at ~700 μmol mol-1. While CO2 enrichment exerted a positive effect on shoot FW of MV, especially in combination with water restrictions, the yield of the cultivar BRM was not affected by CO2 concentration, nor by irrigation regime. However, antioxidant capacity of BRM plants was increased under ECO2 conditions. These results demonstrate that carbon fertilization and/or moderate water limitations ca...
The authors wish to thank Amadeo Urdiain for technical support. This study has been supported by ... more The authors wish to thank Amadeo Urdiain for technical support. This study has been supported by the Ministerio de Economia y Competitividad (MINECO, Spain) (AGL2011-30386-C02-02, BFU 2011-26989). Marcelle M. Bettoni received a grant from' Los CAPES y Coordenacao do Programa de Pos-graduacao em Agronomia - Producao Vegetal' from the Brazilian Government.
Early season onion crops, despite lower yield, is an opportunity for farmers to explore market an... more Early season onion crops, despite lower yield, is an opportunity for farmers to explore market and better prices in southern Brazil. Knowing the amount absorbed and the distribution of nutrients in the plant is essential for adequate management of fertilization. However, little information on this matter is available for onion, especially for organic farming and nontraditional periods in southern Brazil. The objective of this study was to evaluate the nutrient absorption and partitioning in open-pollinated onion cultivars grown in organic system. The experiment was conducted in the Canguiri-UFPR experimental organic farm, Curitiba-PR, with sowing in January. The experiment was arranged in a completely randomized design with three replications. Cultivars Franciscana IPA-10 (purple), Vale Ouro IPA-11 and Brisa IPA-12 (from Empresa Pernambucana de Pesquisa Agropecuária - IPA), Alfa Tropical (from Embrapa Hortaliças), Alfa São Francisco (VIII cycle) and Alfa São Francisco-RT (thrips res...
Neste trabalho o objetivo foi avaliar o crescimento de mudas de chicória roxa ‘Palla Rossa’ (Cich... more 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 qu...
Orientador : Prof. Dr. Átlia Francisco MógorCo-orientadores : Prof. Dr. Volnei Pauletti e Profª. ... more Orientador : Prof. Dr. Átlia Francisco MógorCo-orientadores : Prof. Dr. Volnei Pauletti e Profª. Drª. Maria Nieves Preboste GoicoecheaTese (doutorado) - Universidade Federal do Paraná, Setor de Ciências Agrárias, Programa de Pós-Graduação em Agronomia. Defesa: Curitiba, 23/02/2015Inclui referênciasÁrea de concentração: Produção vegetalResumo: O aumento populacional e a crescente demanda por alimentos, fez com que o uso de fertilizantes sintéticos fosse disseminado, sendo frequentemente utilizados de maneira indiscriminada, acarretando problemas ambientais devido a lixiviação de nutrientes e eutrofização de corpos d'água. Neste sentido, o uso de alternativas biofertilizantes, como a fertilização com substâncias húmicas e fungos micorrízicos arbusculares são importantes para a redução do uso de fertilizantes minerais e sintéticos, bem como, diante dos desafios das mudanças climáticas globais, alterar possíveis efeitos negativos do aumento de CO2 na atmosfera, sobre a produtividade e qualidade de plantas.Deste modo, o presente trabalho teve como objetivo avaliar o efeito da biofertilização com fungos micorrízicos arbusculares e substâncias húmicas em diferentes níveis de CO2, como alternativa nutricional na qualidade e produtividade de mudas e bulbos de cebola. Avaliou-se a aplicação de substâncias húmicas e fungos micorrrízicos arbusculares, em dois níveis de CO2 (ambiente e elevado) no tratamento de mudas e a campo. Para a avaliação das mudas foram determinadas as seguintes características: altura da parte área, comprimento de raiz, diâmetro do pseudocaule, massas seca e fresca da parte aérea e da raiz, áreas foliar e radicular, volumes foliar e radicular; conteúdo de água, amido, açúcares solúveis totais, proteínas solúveis totais, prolina, compostos fenólicos solúveis, atividade da fosfatase ácida, teor de clorofila a, clorofila b, clorofila total e carotenoides, atividade antioxidante (DPPH) e índice de eficiência micorrízica. Nos bulbos, foram avaliados: número de catáfilos, diâmetro do bulbo, conteúdo de água, massas fresca e seca, amido, açúcares solúveis totais, proteínas solúveis totais, prolina, compostos fenólicos solúveis, atividade da fosfatase ácida, pH, sólidos solúveis, acidez titulável, relação sólidos solúveis e acidez titulável e composição nutricional. Concluiu-se neste trabalho, que as substâncias húmicas e a inoculação micorrízica arbuscular podem ser utilizadas como alternativa biofertilizante para otimizar o sistema de produção de cebola, mesmo quando exposta a elevados níveis de CO2, pois melhoram a qualidade tanto de mudas quanto de bulbos, bem como a produtividade final da cultura. Palavras-chave: Allium cepa L., inoculação; ácido fúlvico; ácido húmico; metabólitos primários; metabólitos secundários; qualidade de mudas; qualidade de bulbos.Abstract: The increase in population and the growing demand for food, made with the use of synthetic fertilizers were disseminated, being frequently used so indiscriminately, causing environmental problems as nutrients leaching and eutrophication. In this sense, the use of biofertilizer alternatives, as fertilization with humic substances and arbuscular mycorrhizal fungi are important for reducing the use of mineral and synthetic fertilizers, as well facing the challenges of global climate change, modify possible negative effects of increased CO2 in the atmosphere, on the productivity and quality of plants. In this way, the present study aimed to evaluate the effect of biofertilization with arbuscular mycorrhizal fungi and humic substancesat different levels of CO2, as alternative nutritional in the quality and productivity of seedlings and bulbs of onion. Assessed the application of humic substances and arbuscular mycorrhizal fungi, on two levels of CO2 (ambiental and elevate) in the treatment of seedlings and in the production of bulbs. For the evaluation of the seedlings were evaluated the following characteristics: shhot height, root length, diameter of the pseudostem, dry and fresh mass of shoot and root, foliar and root area, foliar and root volume; water contente of root and shoot, starch, total soluble sugars, total soluble proteins, proline, solubles phenolic compounds, acid phosphatase activity, chlorophyll a content, chlorophyll b, chlorophyll total and carotenoids, DPPH and mycorrhizal efficiency index. The bulbs were assessed: cataphyll number, bulb diameter, water contente of bulb, fresh and dry mass of bulb, starch, total soluble sugars, total soluble proteins, proline, solubles phenolic compounds, acid phosphatase activity, pH, solubles solids, titratable acidity, ratiosoluble solids andtitratable acidityand nutritional composition. In this study, it was concluded that humic substances andand the mycorrhizal arbuscular inoculation can be used as an biofertilizer alternative to optimize the production system of onion, even when exposed to high levels of CO2, do improve the quality both seedlings and bulbs, as well as final…
Predicted reduced precipitation, enhanced evaporative demand and increasing CO2 in the atmosphere... more Predicted reduced precipitation, enhanced evaporative demand and increasing CO2 in the atmosphere will strongly influence wheat production. The association of wheat with arbuscular mycorrhizal fungi (AMF) improves growth under stressful conditions. Our objective was to test the influence of mycorrhizal inoculation on yield, and accumulation of macro- and micro-nutrients and gliadins in grains of durum wheat (Triticum durum Desf.) plants grown under different CO2 concentrations and water regimes. The main factors of the experimental design were mycorrhizal inoculation (inoculated or non-inoculated plants); atmospheric CO2 concentration (ambient, ACO2, or elevated, ECO2); and water regime (optimal or restricted water regime). At ACO2, the simultaneous application of AMF and water deficit decreased the number of seeds per spike without affecting the biomass of grains, and grains accumulated higher contents of copper, iron, manganese, zinc and gliadins. The opposite effect was observed ...
O presente trabalho teve por objetivo identificar o efeito de diferentes doses e frequências de a... more O presente trabalho teve por objetivo identificar o efeito de diferentes doses e frequências de aplicação do biofertilizante aminoácido Ácido L-glutâmico em mudas de orégano produzidas em sistema orgânico, quantificando seu crescimento. Os tratamentos compostos por 2 doses (0,4 e 0,8 mL L-1) de Ácido L-glutâmico a 30%, e testemunha com água, foram aplicados via foliar em intervalos regulares de 7 e 14 dias, por 28 dias (fatorial 3 x 2, com 4 e 2 aplicações, respectivamente), em delineamento inteiramente casualizado com 4 repetições. Aos 62 dias após a semeadura foi realizada a coleta de 8 plantas centrais por repetição para avaliação de características biométricas da parte aérea e das raízes. O experimento demonstrou que o biofertilizante aminoácido ácido L-glutâmico influenciou as características avaliadas. A dose de 0,8 mL L-1, aplicada com intervalo de 14 dias, promoveu maior crescimento das mudas de orégano.
Mustafa Kemal Üniversitesi Tarım Bilimleri Dergisi
Aims: The goal of this investigation was to examine how different dosages of Viva BR® biostimulan... more Aims: The goal of this investigation was to examine how different dosages of Viva BR® biostimulant affected the yield and quality of beet seedlings of Early Wonder Tall Top variety.Methods and Results: The experiment was carried out at intervals of 7 days, the first being at 7 days after sowing (DAS) until 28 DAS, totaling 5 applications (0 (control), 7, 14, 21 and 28 DAS) in the greenhouse of the Universidade Tuiuti do Paraná/Brazil, in a completely randomized design.Conclusions: It is concluded that the application via soil of the Viva BR® biostimulant had a positive impact on the growth of beet seedlings.Significance and Impact of the Study: In warm climates, Beta vulgaris L. (beet) of the Chenopodiaceae family predominates and its cultivated intensively in Brazil's Southeast and South regions. The seedling cultivation phase identifies the crops early establishment in the field in order to ensure stand consistency and appropriate ultimate productivity. Among the diverse techn...
It is known that the use of resistant cultivars and mineral nutrition associated with humic subst... more It is known that the use of resistant cultivars and mineral nutrition associated with humic substances, such as humic and fulvic acids, can favor plant development, promoting aerial parts and roots growth, being a viable technique for better vegetative development of plants in general, and, consequently, for better final productivity. The aim of this work was to evaluate the effect of the fertilizer Bio Humate®, based on humic substances, in the vegetative development of Justyne® hybrid tomatoes. The experiment was conducted in greenhouses of University of Tuiuti do Paraná/Brazil with a completely randomized experimental design, arranged in a 4 x 2 factorial scheme with three doses of the commercial product’s application (1.5, 2, and 2.5 mL L-1 of Bio Humate®) on three repetitions Justyne® hybrid tomato seedlings that were subjected to samplings at 42nd and 56th days after transplanting (DAT)). The treatments were applied every 14 days, starting at 7 DAT at 42 and 56 DAT. The soil a...
In Brazil, cauliflower crop (Brassica oleracea var. botrytis) is mainly a backyard gardening prod... more In Brazil, cauliflower crop (Brassica oleracea var. botrytis) is mainly a backyard gardening production, conducted in small areas of the country. However, its farming practice requires manpower as the production is mostly driven by family farming. Indeed, demand in labor and in sums, further coupled with environmental concerns and high production costs, seeks otherwise alternatives in providing greater efficiency, generating greater yield and quality, compared to other vegetables. Thus, the present study aimed to evaluate the biostimulant effect based on amino acids associated with a nutrient complex with high calcium and boron content in cauliflower cultivation. The experiment was carried out in the municipality of Campo Largo-PR, Brazil in a completely randomized design, with four treatments and three replications. The treatments consisted of 0.50; 0.75 and 1.0ml L-1 doses, plus the control treatment (producer standard), which follows all recommendations for culture, without the a...
Resumo - O brocolis (Brassica oleracea var. italica) e uma hortalica da familia das Brassicas cul... more Resumo - O brocolis (Brassica oleracea var. italica) e uma hortalica da familia das Brassicas cultivado em diversas regioes do mundo, caracteristico de pequenas propriedades, com potencial para cultivos orgânicos, porem e necessario que sejam realizadas pesquisas que disponibilizem produtos que atendam a legislacao orgânica, como biofertilizantes a base de hidrolisados proteicos. Objetivou-se com este trabalho avaliar o efeito da aplicacao de hidrolisado proteico contendo aminoacidos na producao de duas cultivares de brocolis, em sistema de cultivo orgânico. Os tratamentos foram dispostos em delineamento inteiramente casualizado, em esquema fatorial 2 x 4, com quatro repeticoes, sendo duas cultivares (Belstar e Fiesta) e quatro tratamentos: testemunha e aplicacao via foliar de solucoes com as seguintes concentracoes de hidrolisado proteico: 2 mL L -1 , 4 mL L -1 e 8 mL L -1 . As aplicacoes foram realizadas semanalmente com inicio aos sete e termino aos 63 dias apos o transplantio da...
Previous studies have demonstrated that moderate water restrictions and enhanced CO2 concentratio... more Previous studies have demonstrated that moderate water restrictions and enhanced CO2 concentration can maintain or improve yield and accumulation of secondary compounds in lettuce under greenhouse conditions. Therefore, the aim of this study was to evaluate the combination of reduced soil moisture and carbon fertilization in shoot fresh weight (FW) and antioxidant capacity of two Batavia lettuce cultivars (Batabia Rubia Munguia; BRM and Maravilla de Verano; MV). Moderate water restriction treatment was equivalent to 2/3 of the field capacity and elevated CO2 concentration (ECO2) was fixed at ~700 μmol mol-1. While CO2 enrichment exerted a positive effect on shoot FW of MV, especially in combination with water restrictions, the yield of the cultivar BRM was not affected by CO2 concentration, nor by irrigation regime. However, antioxidant capacity of BRM plants was increased under ECO2 conditions. These results demonstrate that carbon fertilization and/or moderate water limitations ca...
The authors wish to thank Amadeo Urdiain for technical support. This study has been supported by ... more The authors wish to thank Amadeo Urdiain for technical support. This study has been supported by the Ministerio de Economia y Competitividad (MINECO, Spain) (AGL2011-30386-C02-02, BFU 2011-26989). Marcelle M. Bettoni received a grant from' Los CAPES y Coordenacao do Programa de Pos-graduacao em Agronomia - Producao Vegetal' from the Brazilian Government.
Early season onion crops, despite lower yield, is an opportunity for farmers to explore market an... more Early season onion crops, despite lower yield, is an opportunity for farmers to explore market and better prices in southern Brazil. Knowing the amount absorbed and the distribution of nutrients in the plant is essential for adequate management of fertilization. However, little information on this matter is available for onion, especially for organic farming and nontraditional periods in southern Brazil. The objective of this study was to evaluate the nutrient absorption and partitioning in open-pollinated onion cultivars grown in organic system. The experiment was conducted in the Canguiri-UFPR experimental organic farm, Curitiba-PR, with sowing in January. The experiment was arranged in a completely randomized design with three replications. Cultivars Franciscana IPA-10 (purple), Vale Ouro IPA-11 and Brisa IPA-12 (from Empresa Pernambucana de Pesquisa Agropecuária - IPA), Alfa Tropical (from Embrapa Hortaliças), Alfa São Francisco (VIII cycle) and Alfa São Francisco-RT (thrips res...
Neste trabalho o objetivo foi avaliar o crescimento de mudas de chicória roxa ‘Palla Rossa’ (Cich... more 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 qu...
Orientador : Prof. Dr. Átlia Francisco MógorCo-orientadores : Prof. Dr. Volnei Pauletti e Profª. ... more Orientador : Prof. Dr. Átlia Francisco MógorCo-orientadores : Prof. Dr. Volnei Pauletti e Profª. Drª. Maria Nieves Preboste GoicoecheaTese (doutorado) - Universidade Federal do Paraná, Setor de Ciências Agrárias, Programa de Pós-Graduação em Agronomia. Defesa: Curitiba, 23/02/2015Inclui referênciasÁrea de concentração: Produção vegetalResumo: O aumento populacional e a crescente demanda por alimentos, fez com que o uso de fertilizantes sintéticos fosse disseminado, sendo frequentemente utilizados de maneira indiscriminada, acarretando problemas ambientais devido a lixiviação de nutrientes e eutrofização de corpos d'água. Neste sentido, o uso de alternativas biofertilizantes, como a fertilização com substâncias húmicas e fungos micorrízicos arbusculares são importantes para a redução do uso de fertilizantes minerais e sintéticos, bem como, diante dos desafios das mudanças climáticas globais, alterar possíveis efeitos negativos do aumento de CO2 na atmosfera, sobre a produtividade e qualidade de plantas.Deste modo, o presente trabalho teve como objetivo avaliar o efeito da biofertilização com fungos micorrízicos arbusculares e substâncias húmicas em diferentes níveis de CO2, como alternativa nutricional na qualidade e produtividade de mudas e bulbos de cebola. Avaliou-se a aplicação de substâncias húmicas e fungos micorrrízicos arbusculares, em dois níveis de CO2 (ambiente e elevado) no tratamento de mudas e a campo. Para a avaliação das mudas foram determinadas as seguintes características: altura da parte área, comprimento de raiz, diâmetro do pseudocaule, massas seca e fresca da parte aérea e da raiz, áreas foliar e radicular, volumes foliar e radicular; conteúdo de água, amido, açúcares solúveis totais, proteínas solúveis totais, prolina, compostos fenólicos solúveis, atividade da fosfatase ácida, teor de clorofila a, clorofila b, clorofila total e carotenoides, atividade antioxidante (DPPH) e índice de eficiência micorrízica. Nos bulbos, foram avaliados: número de catáfilos, diâmetro do bulbo, conteúdo de água, massas fresca e seca, amido, açúcares solúveis totais, proteínas solúveis totais, prolina, compostos fenólicos solúveis, atividade da fosfatase ácida, pH, sólidos solúveis, acidez titulável, relação sólidos solúveis e acidez titulável e composição nutricional. Concluiu-se neste trabalho, que as substâncias húmicas e a inoculação micorrízica arbuscular podem ser utilizadas como alternativa biofertilizante para otimizar o sistema de produção de cebola, mesmo quando exposta a elevados níveis de CO2, pois melhoram a qualidade tanto de mudas quanto de bulbos, bem como a produtividade final da cultura. Palavras-chave: Allium cepa L., inoculação; ácido fúlvico; ácido húmico; metabólitos primários; metabólitos secundários; qualidade de mudas; qualidade de bulbos.Abstract: The increase in population and the growing demand for food, made with the use of synthetic fertilizers were disseminated, being frequently used so indiscriminately, causing environmental problems as nutrients leaching and eutrophication. In this sense, the use of biofertilizer alternatives, as fertilization with humic substances and arbuscular mycorrhizal fungi are important for reducing the use of mineral and synthetic fertilizers, as well facing the challenges of global climate change, modify possible negative effects of increased CO2 in the atmosphere, on the productivity and quality of plants. In this way, the present study aimed to evaluate the effect of biofertilization with arbuscular mycorrhizal fungi and humic substancesat different levels of CO2, as alternative nutritional in the quality and productivity of seedlings and bulbs of onion. Assessed the application of humic substances and arbuscular mycorrhizal fungi, on two levels of CO2 (ambiental and elevate) in the treatment of seedlings and in the production of bulbs. For the evaluation of the seedlings were evaluated the following characteristics: shhot height, root length, diameter of the pseudostem, dry and fresh mass of shoot and root, foliar and root area, foliar and root volume; water contente of root and shoot, starch, total soluble sugars, total soluble proteins, proline, solubles phenolic compounds, acid phosphatase activity, chlorophyll a content, chlorophyll b, chlorophyll total and carotenoids, DPPH and mycorrhizal efficiency index. The bulbs were assessed: cataphyll number, bulb diameter, water contente of bulb, fresh and dry mass of bulb, starch, total soluble sugars, total soluble proteins, proline, solubles phenolic compounds, acid phosphatase activity, pH, solubles solids, titratable acidity, ratiosoluble solids andtitratable acidityand nutritional composition. In this study, it was concluded that humic substances andand the mycorrhizal arbuscular inoculation can be used as an biofertilizer alternative to optimize the production system of onion, even when exposed to high levels of CO2, do improve the quality both seedlings and bulbs, as well as final…
Predicted reduced precipitation, enhanced evaporative demand and increasing CO2 in the atmosphere... more Predicted reduced precipitation, enhanced evaporative demand and increasing CO2 in the atmosphere will strongly influence wheat production. The association of wheat with arbuscular mycorrhizal fungi (AMF) improves growth under stressful conditions. Our objective was to test the influence of mycorrhizal inoculation on yield, and accumulation of macro- and micro-nutrients and gliadins in grains of durum wheat (Triticum durum Desf.) plants grown under different CO2 concentrations and water regimes. The main factors of the experimental design were mycorrhizal inoculation (inoculated or non-inoculated plants); atmospheric CO2 concentration (ambient, ACO2, or elevated, ECO2); and water regime (optimal or restricted water regime). At ACO2, the simultaneous application of AMF and water deficit decreased the number of seeds per spike without affecting the biomass of grains, and grains accumulated higher contents of copper, iron, manganese, zinc and gliadins. The opposite effect was observed ...
O presente trabalho teve por objetivo identificar o efeito de diferentes doses e frequências de a... more O presente trabalho teve por objetivo identificar o efeito de diferentes doses e frequências de aplicação do biofertilizante aminoácido Ácido L-glutâmico em mudas de orégano produzidas em sistema orgânico, quantificando seu crescimento. Os tratamentos compostos por 2 doses (0,4 e 0,8 mL L-1) de Ácido L-glutâmico a 30%, e testemunha com água, foram aplicados via foliar em intervalos regulares de 7 e 14 dias, por 28 dias (fatorial 3 x 2, com 4 e 2 aplicações, respectivamente), em delineamento inteiramente casualizado com 4 repetições. Aos 62 dias após a semeadura foi realizada a coleta de 8 plantas centrais por repetição para avaliação de características biométricas da parte aérea e das raízes. O experimento demonstrou que o biofertilizante aminoácido ácido L-glutâmico influenciou as características avaliadas. A dose de 0,8 mL L-1, aplicada com intervalo de 14 dias, promoveu maior crescimento das mudas de orégano.
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