Navegando por Assunto "Feijão-caupi"

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Acúmulo e exportação de macronutrientes primários no feijão-caupi fertirrigado por gotejamento contínuo e pulsado
(2024-08-14) Costa, Maria Vitória Gomes da; Silva, Gerônimo Ferreira da; http://lattes.cnpq.br/4596017290307351; http://lattes.cnpq.br/8775749630925927
Atividade antagonista de Bacillus spp. frente a patógenos radiculares
(2022-05-23) Andrade, Beatriz Rayana Damásio de; Oliveira, José de Paula; Silva, Maria Luiza Ribeiro Bastos da; http://lattes.cnpq.br/0134127720822401; http://lattes.cnpq.br/3540150611094753; http://lattes.cnpq.br/2101194146601855
No Brasil, a produção de feijão-caupi (Vigna unguiculata (L.) Walp.) é prejudicada por vários fatores, principalmente as doenças radiculares causadas por fungos. Devido aos danos significativos ocasionados por esses agentes nas lavouras de feijão, agricultor vem intensificando uso de compostos químicos, acarretando, por conseguinte, em uma série de danos irreparáveis ao meio ambiente e ao ser humano. Como alternativa aos impactos ocasionados pelo uso dos fungicidas, estudos voltados para utilização de agentes de biocontrole, em especial bactérias do gênero Bacillus spp, têm aumentado em importância, visto que apresentam uma variedade de mecanismos de ação antifúngicas. Desta forma, a presente pesquisa objetivou selecionar microrganismos do gênero Bacillus com potencial uso no biocontrole de fitopatógenos acometidos nas plantações de feijão-caupi. Deste modo, as bactérias do gênero Bacillus foram isoladas de amostras de solo coletadas no município de Cedro- PE, e submetidas a tratamento térmico; após isso, 12 isolados foram selecionados e submetidos a testes morfofisiológicos, bioquímicos e antagônicos. A morfologia bacteriana foi observada através da coloração de Gram, no qual foi identificado a forma bacilar dos microrganismos, sendo, por conseguinte inoculados em meios bioquímicos específicos para a seleção de bactérias com características similar ao Bacillus subtilis (ATCC 6633). Após o processo seletivo, foi executado o teste de pareamento de culturas em placa de Petri, onde, a atividade antagônica das bactérias isoladas foram avaliadas frente aos fungos fitopatogênicos Rhizoctonia solani Kuhn, Fusarium oxysporum f. sp. Tracheiphilum e Macrophomina phaseolina. Os resultados obtidos evidenciaram que apenas o isolado IPA 125 foi capaz de inibir o crescimento micelial in vitro apresentando uma elevada atividade antagônica frente a Rhizoctonia solani Kuhn, Fusarium oxysporum f. sp. tracheiphilum e macrophomina phaseolina, sendo obtidos halos de 88,4 ± 1,2 c, 88,3 ± 2,5 c e 53,9 ± 3,1 a respectivamente. Dessa forma, esse estudo contribui e permite vislumbrar a utilização Bacillus spp. IPA 125 na produção de biofungicidas com potencial supressor a doenças radiculares acometidas nas sementes de feijão- caupi.
Ausência de transmissão por sementes do vírus do mosaico severo do caupi
(1992) Assis Filho, Francisco Miguel de; Lima, José Albérsio de Araújo; Ribeiro, Gilvan Pio; Mariano, Rosa de Lima Ramos
Estudou-se a possibilidade de transmissão do vírus do mosaico severo do caupi - CpSMV. "Cowpea Severe Mosaic Comovirus", através de sementes de seis cultivares de Vigna unguiculata, obtidas de plantas infectadas artificialmente em condições de campo e de casa-de-vegetação. Foram testadas 12.81 7 sementes pelos métodos sorológico, infectividade e plantio direto. Para o teste sorológico utilizaram-se macerados de pares de hipocóltilos, obtidos a partir de 11.120 sementes das cvs. BR 1- Poty, Carrapicho, Pitíuba, Sempre Verde, Seridó e TVu 2331 germinadas em papel toalha e testadas contra anti-soro específico para CpSMV através de dupla difusão em agar. O teste de infectividade foi realizado com 800 sementes das cvs. Carrapicho e Seridó, produzidas em campo, das quais foram dissecados o tegumento, cotilédones e eixo embrionário. Extrato obtido pela maceração em tampão fosfato de 5 unidades de cada uma das partes, foi inoculado em plântulas de caupi cv. Sempre Verde. em casa-de-vegetação, as quais foram observadas por 20 dias, visando verificar a ocorrência ou não de infecç8o viral. Para o plantio direto, 1.000 sementes de 'Carrapicho' e 'Seridó', produzidas em campo, foram postas a germinar em vasos plásticos contendo solo esterilizado, e as plantas observadas por 30 dias. Para confirmação dos resultados do plantio direto, testaram-se sorologicamente 10% das plantas contra anti-soro específico para CpSMV. Observou-se a ocorrência de manchas em sementes de algumas cultivares. A despeito destas alterações no tegumento, não se detectou a presença do vírus em nenhuma semente madura, indicando que o CpSMV não é transmitido através de sementes de caupi.
Avaliação da aplicação de molibdênio e nitrogênio no crescimento do feijão-caupi irrigado com água salina em ambiente semiárido
(2021-12-06) Maciel, Lucas Henrique; Oliveira, Alexandre Campelo de; http://lattes.cnpq.br/8164135937542569; http://lattes.cnpq.br/3063695672625738
Cowpea (Vigna unguiculata (L.) Walp.) has its center of origin located in the African continent, being introduced in Brazil around the 16th century and is still recognized today as one of the most consumed legumes in the North and Northeast regions. Its cultivation is expressive by irrigating farmers, however, the water used is of poor quality and extremely saline. This salinity can affect the absorption of nitrogen, an important macronutrient for the growth and development of the legume and associating with this condition the deficiency of molybdenum, an important micronutrient in nitrogen metabolism, which together can be an important nutritional management strategy to provide the expression of maximum productive potential of cowpea. The objective of this work was to evaluate the behavior of cowpea cv. IPA 207, when subjected to increasing doses of molybdenum associated with nitrogen doses, aiming to establish the treatment that would enable the best increment of the studied variables. The experimental design used was in randomized blocks, generating a factorial scheme, 5x2x4, totaling 40 experimental units, with the following treatments: 5 doses of molybdenum (0, 40, 80, 120 and 160 g/ha) and two doses of nitrogen ( 0, 80 kg/ha) and 4 repetitions. The molybdenum source used was sodium molybdate, and urea was nitrogen. Treatments were applied 23 days after seedling emergence. The variables studied were: plant height (cm), stem diameter (mm), number of pods per plant, number of grains per pod, mass of one hundred grains (g), fresh and dry mass of shoot (g), fresh and dry root mass (g) and the activity of the nitrate reductase enzyme. The data obtained were submitted to analysis of variance and then to polynomial regression analysis. The increasing doses of molybdenum applied via the leaves in association with nitrogen fertilization positively influenced the activity of the nitrate reductase enzyme, as well as the accumulation of fresh and dry matter of cowpea, in addition to the significant increase in the variables number of grains per pod and number of pods per plant.
Avaliação de extratos de mamona Ricinus communis e do coité Crescentia cujete L. no controle de Aphis craccivora Koch (Hemiptera: Aphididae) em feijão caupi
(2019) Ferreira, Vandeilson Bezerra; Evangelista Júnior, Walter Santos; Nascimento, Antônio Henrique Cardoso do; http://lattes.cnpq.br/5216997634308364; http://lattes.cnpq.br/6728342264331935; http://lattes.cnpq.br/2799857312943263
Controlling agricultural pests is a practice that has been undergoing innovations constantly. The use of plant extracts appears as an alternative of pest control and is recommended mainly in family agriculture, and in fields of production mainly in organic agriculture, being a low cost product, easy to obtain and high effectiveness in pest control. The extracts of the plants of MamoneiraRicinuscommunisand CoitéCrescentiacujeteL. are promising in the natural control of pests, as they have toxic substances such as ricin, phenolic compounds and flavonoids, respectively. The objective of this work was to evaluate the effect of the extracts of these plants on the black aphid mortality of the common bean Aphis craccivora(Hemiptera: Aphididae). Mamona and Coité extracts caused a high mortality on black bean aphid with rates of 74.69% and 70.23%, respectively. Comparing the black aphid mortality in the different extracts per day after the application of the extracts, it was verified that the Mamona extract had a higher mortality rate (84.86%) on the first day of evaluation and the second day had a coefficient of 81.3%. However, there was no difference between the plant extracts during the five days of evaluation and they differed from the control throughout the evaluation period, which reinforces the efficiency of the use of these extracts in the control of this pest, as well as the necessity of use of control methods. It is concluded that the plant extracts of Mamona and Coité are efficient in controlling the mortality of black aphid A. craccivoraand contribute to the management of this pest in family agriculture, organic and agroecologicalcrops.
Avaliação de extratos secos vegetais para o manejo de Callosobruchus maculatus fabr. (1775) (Coleoptera: Chrysomelidae) em feijão-caupi armazenado
(2023-05-02) Santos, Priscila Araujo dos; Oliveira, Carlos Romero Ferreira de; http://lattes.cnpq.br/2515051171734004; http://lattes.cnpq.br/1451445237327488
The beetle Callosobruchus maculatus (Fabr., 1775) (Coleoptera: Chrysomelidae) is considered the main pest of Vigna unguiculata (L.) Walp - Leguminosae (Cowpea) under storage conditions. The use of products of a plant nature, such as powders, aqueous extracts, and oils for the control of agricultural pests have been studied as an alternative for a more sustainable management. Research using vegetable powders is less frequent but of great importance for the small producer, because it has a low cost of preparation, are easy to obtain and use, and do not require skilled labor. The objective of this work was to evaluate the effect of dry plant extract from the leaves of Croton pulegiodorus Baill. – Euphorbiaceae (Velaminho), Momordica charantia L. – Cucurbitaceae (Melon-de-são-caetano) and Sarcomphalus joazeiro (Mart.) Hauenshild – Rhamnaceae (Juazeiro), on mortality, repellency, oviposition and emergence of C. maculatus in stored cowpea. Arenas consisting of plastic pots (140ml), containing 20g of cowpeas, were used, in which the dry extract of each plant was added separately according to the treatments (0g, 1g; 1.5g; 2g; 2.5g and 3g). After assembling the arenas, 10 non-sexed adult insects were inserted, which were confined for 48 hours in B.O.D (28±2°C, 70±5UR and 24h scotophase). For the mortality test, the live and dead insects were counted, then they were discarded and the data obtained were submitted to ANOVA, and the means were compared by Tukey's test (P < 0.05). For the repellency, arenas composed of two plastic containers, symmetrically interconnected by two plastic tubes, to a central container were used. In the two side pots, 20g of cowpea were deposited, adding in one of them the established amount of dry vegetable extract (treatment) and the other, corresponded to the control. In the central box, 10 adult insects of C. maculatus were released in 10 replications. The insects attracted to each treatment were counted, and the Repellency Index (RI) was determined. The beetles were removed and the number of eggs in all grains was counted, which were transferred to small plastic pots (140ml) and taken back to B.O.D. After 30 days of storage, the number of adult insects emerged was counted. The experiments were carried out in a completely randomized design with 10 replications. The results of RI, oviposition and emergence were submitted to Student's t test to determine their statistical significance. The dry plant extract Croton pulegiodorus was the one that showed the best results among all the plants used, it was the only species that caused mortality of the insects with percentages ranging from 58% to 96%. The RI demonstrated that the treatments containing the dry extract of C. pulegiodorus and S. joazeiro were the only ones that presented repellent effect, which significantly interfered in the oviposition and emergence of insects. It was demonstrated that the extracts of the leaves of C. pulegiodorus and S. joazeiro are promising for the management of C. maculatus. On the other hand, M. charantia did not affect the behavior of the pest in any of the experiments performed, being considered neutral.
Controle alternativo e biológico da murcha de Fusarium nos feijões caupi (Vigna unguiculata (L.) Walp.) e comum (Phaseolus vulgaris L.), e promoção de crescimento vegetal utilizando isolados de Trichoderma
(2020) Silva, Rewysson Alves Ribeiro da; Costa, Antônio Félix da; http://lattes.cnpq.br/7860458096623659; http://lattes.cnpq.br/3347968873366595
Desenvolvimento inicial do feijão-caupi em função de crescentes doses de molibdênio
(2019) Sousa, José Victor Lessa de; Oliveira, Alexandre Campelo de; http://lattes.cnpq.br/8164135937542569; http://lattes.cnpq.br/7406808303559442
The cultivation of cowpea began with the advance of colonization of the country, being introduced in the state of Bahia and spread by routes in the interior of the Northeast, becoming highly adapted to edaphoclimatic conditions and characterizing as the main source of protein of the sertanejo until nowadays. Even when it is a legume, the bean can not supply its nitrogen demand only with what is produced by biological fixation, and associated with this condition, the deficiency of molybdenum, an important element in nitrogen metabolism can be an important strategy of nitrogen. nutritional management that provide the expression of their maximum productive potential. The objective of this work was to evaluate the behavior of cowpea cv. Paulistinha, when subjected to increasing doses of molybdenum associated with nitrogen doses, seeking to determine the treatment that provided the best development for the studied variables. The experimental design was in blocks, in a 5x2x3 factorial arrangement, with the following treatments: 5 doses of molybdenum (0, 40, 80, 120 and 160 g / ha), and 2 doses of nitrogen (0, 80 kg / ha). , with 3 repetitions, totaling 30 experimental units. The source of molybdenum used was sodium molybdate, and nitrogen, urea. The treatments were applied 20 days after seedling emergence. The studied variables were: plant height (cm), stem diameter (mm), leaf area (cm²) and fresh matter mass (g). The data were submitted to variance analysis and later to polynomial regression analysis. Increasing doses of molybdenum applied via leaf provided higher plant height, stem diameter and leaf area in cowpea. The variable fresh matter mass was not influenced by the applied treatments.
Efeito de nanopartículas de cobre e prata sobre as alterações fisiológicas e bioquímicas de plantas de arroz submetidas ao estresse hídrico, infecção de Bipolaris oryzae e feijão-caupi submetido ao estresse pela infecção do Fusarium oxysporum f. sp. tracheiphilum
(2021) Lôbo, Rodrigo Albuquerque; Rios, Jonas Alberto; http://lattes.cnpq.br/1157022372359214; http://lattes.cnpq.br/9438329131277566
Efeito do óleo de pequi (Caryocar brasiliense Camb) obtido na feira livre de Princesa Isabel – PB, sobre Callosobruchus maculatus em feijão armazenado
(2018) Lima, Edna Alves de; Silva, Renato Augusto da; http://lattes.cnpq.br/5111987334920733; http://lattes.cnpq.br/3607195370784211
The Cowpea bean, Vigna unguiculata (Fabaceae), has an extraordinary role in feeding the population of the north and northeast regions of the country. However this culture is still detrimental to the loss of 10% of production due to the attack of insect-pests and use of synthetic chemical pesticides. In the present work the effect of the oil of Pequi (Caryocar brasiliense Camb.) As natural defensive, was studied on the dry rot (Callosobruchus maculatus) in Beanscowpea both acquired in the city of Princess Isabelle, Sertão of Paraíba. The methodology is very simple and can be reproduced in a domestic environment, because there is no need for the use of toxic substances, the oil of pequi used in cooking and alternative medicine. For the experiment it was used only of plastic containers, account drops and domestic balance, all low cost and commercially accessible. Concentration of 0.0 mg to 167.0 mg of oil per 20g of beans were analyzed and as a result was estimated the average lethal concentration (LC50) = 98.24 by means of linear regression. The good results presented here revealed that Pequi oil can be an economically viable and affordable alternative to the management of the rot in stored beancowpea beans.
Extração do óleo fixo do Syagrus cearensis Noblick e atividade inseticida sobre o Callosobruchus maculatus em feijão armazenado
(2019) Lemos, Cleide Maria de; Silva, Renato Augusto da; http://lattes.cnpq.br/5111987334920733
The Cowpea bean, Vigna unguiculata, has an extraordinary role in feeding the population of the North and Northeast regions of the country. However, this crop is still harmed by the significant loss of production due to insect pest attack and poor product quality due to the use of synthetic chemical pesticides. In the present work the effect of the oil of the catolé Syagrus cearensis Noblick as natural defensive was studied on the carouscho Callosobruchus maculatus in cowpea, both purchased in the city of São José do Belmonte, sertão of Pernambuco. The methodology can be reproduced in domestic environment since the oil of catolé is used in cooking and folk medicine and there are no reports of intoxication. For the bio-insecticidal tests only plastic containers, syringes and household scales, all of low cost and commercially available, were used. The concentration of 0.0 mg to 123.2 mg of the oil per 20g of beans were analyzed and as a result the Lethal Concentration (LC50) = 64.96 was estimated using the "trend line" option of the Excel 2010 program, Office, Microsoft. The good results presented here, where there was 100% mortality of C. maculatus with the dosages of (88.0 mg and 123.2 mg), revealing that the catolé oil is an economically viable bioinseticide and accessible for the handling of the caruncho on stored cowpea beans.
Fontes de resistência em Caupi (Vigna unguiculata (L.) Walp.) a mancha de cercospora (Cercospora cruenta Sacc.)
(1997) Coêlho, José Benjamin Machado; Coelho, Rildo Sartori Barbosa
Dezessete cultivares e linhagens de caupi (Vigna unguiculata (L.) Walp.), foram avaliadas para resistência ao fungo Cercospora cruenta em condições de campo. A maioria dos genótipos comportaram-se como resistentes, destacando-se entre estes as linhagens L 101.000-1 e L 288.004, que não exibiram sintomas, e L 190.004, CINCX-11-9D (PL-5), CNCX-11-9D (PL-1) e L 136.006 que apresentaram uma a duas plantas, dentre as 40 avaliadas, infectadas pela doença. Apenas a linhagem CNCX-279-10 G foi altamente suscetível, diferindo estatisticamente das demais. Face a possível variabilidade do patógeno, sugere-se a testagem destes genótipos em diferentes locais e épocas de cultivo do caupi, bem como a avaliação em relação a outras doenças.
Identificação de vírus em tomate, cucurbitáceas e caupi na região do Submédio São Francisco
(2001) Batista, Diógenes da Cruz; Paz, Cristiane Domingos da; Ribeiro, Gilvan Pio; Cruz, Edson dos Santos; Pereira Filho, Gaudêncio Gomes; Andrade, Gaudêncio Gomes
Visando identificar os principais vírus que ocorrem em plantações comerciais de tomate, melão, melancia e caupi na região do Submédio São Francisco foi feito um levantamento de viroses em campos nos seguintes projetos de irrigação: Juazeiro - BA (Maniçoba, Mandacaru e Tourâo) e Petrolina - PE (Nilo Coelho e Bebedouro). Foram analisadas pelo método de ELISA indireto 101 amostras de tomate, 80 de melão e melancia e 92 de caupi. O material de caupi foi também testado por dupla difusão em ágar para o Cowpea severe mosaic virus-CPSMV. A análise sorológica apresentou os seguintes resultados: reação positiva com o antissooro contra o Tomato spotted wilt virus-TSWV ocorreu em 12,87% e contra o Potato vírus Y-PVY em 29,7% nas amostras de tomate; o Papaya ringspot vírus - type W-PRSV-W em 30% e o Watermeíon mosaic vírus-2 - WMV-2 em 68,75% nas amostras de melão e melancia, e o Cowpea aphid-borne mosaic vírus - CABMV em 29,35% nas amostras de caupi. Não foi detectada reação positiva para os antissoros contra: Tobacco mosaic virus-TMV em tomate, Cucumber mosaic virus-CMV e Squash mosaic virus-SqMV em melão e melancia, e o CPSMV e CMV em caupi.
Produtividade, estresse e proteção oxidativa em feijão-caupi inoculado com estirpes de Alfa e Beta-Rizóbios
(2022-05-27) Martim, Mayara Bernardo Tavares; Simões, Adriano do Nascimento; http://lattes.cnpq.br/1895049701533568; http://lattes.cnpq.br/1861408621908918
Relatório das atividades desenvolvidas no Estágio Supervisionado Obrigatório - ESO: prospectiva de fungos leveduriformes potencialmente biocontroladores a murcha-de-fusário em feijão-caupi
(2019) Pimentel, Igor Alexsander de Melo; Laranjeira, Delson; http://lattes.cnpq.br/1262204427401043; http://lattes.cnpq.br/5850954480479417
Relatório de estágio supervisionado obrigatório
(2021-06-23) Calvano, Evandro Luis; Rios, Jonas Alberto; http://lattes.cnpq.br/1157022372359214; http://lattes.cnpq.br/4043033052280475
Relatório de Estágio Supervisionado Obrigatório – ESO: caracterização morfológica de acessos de feijão-caupi
(2023-04-17) Medeiros, Julianderson da Silva; Carvalho, Rejane Rodrigues da Costa e; http://lattes.cnpq.br/3307316028992311; http://lattes.cnpq.br/9779174183447986
Resistência de genótipos de feijão-caupi a Macrophomina phaseolina e Rhizoctonia solani
(2024) Nery, Brennda Lethícia Alexandre Coelho; Mendonça Júnior,; Antonio Francisco de; https://lattes.cnpq.br/7686113494221486
Respostas agronômicas do feijão caupi (Vigna unguiculata (L.) Walp.) sobre diferentes proporções: solo e esterco suíno em dois sistemas de cultivo
(2019-07-17) Jesus, Maria da Saúde Santos de; Simplício, Josimar Bento; http://lattes.cnpq.br/1876691945804390
Cowpea is a food crop grown in several Brazilian regions, rich in protein is one of the most important legumes and even in soils of low fertility, regions of high temperatures and conditions of water stress produces well. The area cultivated with cowpea in Brazil for the 2017/2018 harvest was approximately 1,440,000 ha, with the Northeast region having the largest planting area, 404,20 thousand ha. Given its great importance for the Northeast region and considering a crop that presents rapid expansion throughout Brazil, it is also considered as one more option for export culture. The creation of confined animals grows every year and this growth favors a considerable volume of waste that if thrown into the environment, can cause damage to this environment. In this sense, the present research proposed to evaluate in a 2x3x2 factorial scheme the behavior of two Creole varieties of cowpea, LA2017 and CB2017, originating from communities of rural producers in the municipality of Santa Cruz da Baixa Verde - PE, The authors present three proportions of pork soil and manure, in two culture conditions, with and without dead cover, in experimental design of casualized blocks, in the experimental area of the Academic Unit of Serra Talhada (UAST), in the Sertão do Pajeú micro-region. By means of the results observed, it was concluded that LA2017 presented superior behavior in the cultivation system with dead cover of 35% for the weight of pods per plant. While the CB2017 presented more significant performance in the cultivation system without dead cover. The proportion with 100% pig manure increased by up to 27% the weight of seeds when compared to the control, proportion 100% soil. Overall, the presence of manure increased the development of cowpea plants.
Testes de vigor de resistência a estresse e bioquímicos em sementes de feijão caupi – uma revisão
(2021-12-10) Araújo, Anna Beatriz Nogueira de; Silva, Monalisa Alves Diniz da; http://lattes.cnpq.br/0446410743186066; http://lattes.cnpq.br/1953643340073473
Vigna unguiculata L. or cowpea beans, as it is commonly known, is one the main food sources in a lot of countries, stand out Brazil. For implementation of crops it is necessary to use seeds with high physiological quality, which understands the germination and the vigor. Between the tests of stress the best known are accelerated aging, controlled deterioration, cold test and low temperature germination. Biochemical tests stand out the electrical conductivity, potassium and tetrazolium leaching, which assess the condition of the seed. Therefore, the vigor tests make it possible to classify seed lots at different vigor levels. Represent a great help for seed producing companies, who need to make storage decisions, marketing and disposal; Even if the seeds meet the minimum germination percentage required by the Ministry of Agriculture livestock and supply to be marketed. The present work aimed to carry out a literature review on scientific articles published in the period from 2011 to 2021, regarding vigor tests, accelerated aging, electrical conductivity and tetrazolium in cowpea seeds. Graphs were drawn up regarding expressions and keywords: tetrazolium in cowpea seeds; electrical conductivity in cowpea seeds and accelerated aging in cowpea seeds; electrical conductivity in Vigna unguiculata; accelerated aging in Vigna unguiculata; tetrazolium in Vigna unguiculata and cowpea in seed vigor tests, considering the database of Google Academic , Web of Science and Scielo, year of publication and languages ( Portuguese, English and Spanish). The database that presented the most published articles was Google Academic, as it is a simple and easily accessible platform, different from platforms Scielo and Web of Science. On the occasion of the evaluation of cowpea seeds will be subjected to accelerated ageing vigor tests, electrical conductivity and the tetrazolium, one should be aware that there are several factors that influence the results; genotype and aspects of the methodology itself, but also the intrinsic seed conditions and pre- and post-harvest management.