Pesquisa Agropecuaria Tropical最新文献_第10页

Parasitism of Tetrastichus howardi (Ollif, 1893) (Hymenoptera: Eulophidae) on Chrysodeixis includens (Walker, [1858]) (Lepidoptera: Noctuidae) pupae at different ages 霍华Tetrastichus howardi (Ollif, 1893)(膜翅目:小蜂科)在不同龄期寄生在金蝇(chrysodeixens, Walker，[1858])(鳞翅目:夜蛾科)蛹上的研究

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Pesquisa Agropecuaria Tropical Pub Date : 2022-01-01 DOI: 10.1590/1983-40632022v5272978

M. S. Barbosa, Mariana Santana Guerra, F. F. Pereira, Otávio Henrique Medina da Silva, I. F. D. Silva

{"title":"Parasitism of Tetrastichus howardi (Ollif, 1893) (Hymenoptera: Eulophidae) on Chrysodeixis includens (Walker, [1858]) (Lepidoptera: Noctuidae) pupae at different ages","authors":"M. S. Barbosa, Mariana Santana Guerra, F. F. Pereira, Otávio Henrique Medina da Silva, I. F. D. Silva","doi":"10.1590/1983-40632022v5272978","DOIUrl":"https://doi.org/10.1590/1983-40632022v5272978","url":null,"abstract":"ABSTRACT Tetrastichus howardi (Olliff, 1893) (Hymenoptera: Eulophidae) is an adult parasitoid of lepidopteran pests, and the age of the host has a strong influence on its reproduction. This study aimed to evaluate the biological characteristics of T. howardi reared on different aged pupae of Chrysodeixis includens (Walker, [1858]) (Lepidoptera: Noctuidae). For that, pupae with 24, 48, 72, 96, 120, 144 or 168 h of age were exposed to parasitism. The experimental design was completely randomized, with seven treatments (pupal age) and ten replications, with each replication consisting of five pupae individualized with one female parasitoid at the respective ages. Tetrastichus howardi parasitized and emerged in pupae of all the evaluated ages. The duration of the cycle (egg-adult) in days, number of parasitoids that emerged per pupa (progeny), progeny per female, sex ratio of the parasitoid and longevity of adults were similar. This is the first record of T. howardi reproducing in C. includens pupae under laboratory conditions. The highest parasitism and development of T. howardi was obtained in 24-to 96-hour-old pupae of C. includens, indicating that this age range is more favorable to rear this parasitoid under laboratory conditions.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reinoculation of topdressing Rhizobium tropici combined or not with Azospirillum brasilense in common bean 大豆追施热带根瘤菌与巴西固氮螺旋菌复配的研究

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Pesquisa Agropecuaria Tropical Pub Date : 2022-01-01 DOI: 10.1590/1983-40632022v5273419

Quirlene Raquel de Almeida, Itamar Rosa Teixeira, G. Silva, E. C. Rocha, H. Kikuti

{"title":"Reinoculation of topdressing Rhizobium tropici combined or not with Azospirillum brasilense in common bean","authors":"Quirlene Raquel de Almeida, Itamar Rosa Teixeira, G. Silva, E. C. Rocha, H. Kikuti","doi":"10.1590/1983-40632022v5273419","DOIUrl":"https://doi.org/10.1590/1983-40632022v5273419","url":null,"abstract":"ABSTRACT The nitrogen (N) supplying capacity of common bean plants through biological fixation is still questioned by farmers. This study aimed to investigate the nodulation, growth and production of common bean cultivars under field conditions, when subjected to topdressing Rhizobium tropici reinoculation applied at different rates, combined or not with Azospirillum brasilense. A randomized blocks design was used, in a 2 × 4 × 2 + 2 factorial arrangement, with four replications. The treatments consisted of two common bean cultivars (BRS-Estilo and BRS-Esteio) reinoculated with four R. tropici rates (0-, 1-, 2- and 4-fold the reference rate), combined or not with A. brasilense in co-inoculation. The additional treatments consisted of nitrogen fertilizer applications (20 and 50 kg ha-1 at planting and as topdressing, respectively) for both cultivars. The variables evaluated at the R6 stage were nodulation (number of active nodules and nodule dry weight) and morphological plant characteristics (root length and dry weight, plant height, shoot dry weight and N content), while, at harvest, the number of pods per plant, number of grains per pod, 100-grain average weight and grain yield were evaluated. The topdressing reinoculation of R. tropici combined with A. brasilense at the V4 stage affected the nodulation process and agronomic characteristics of the common bean plants. When performed in addition to seed inoculation, it may totally replace the supply of mineral N in the crop, allowing the achievement of high yield levels.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Antimicrobial activity of Lafoensia pacari phenolics-containing extract against common bean phytopathogens 含拉菲菌酚类提取物对普通豆类植物病原菌的抑菌活性研究

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Pesquisa Agropecuaria Tropical Pub Date : 2022-01-01 DOI: 10.1590/1983-40632022v5272726

Waléria Ramos Nogueira de Souza, P. Vaz, A. Wendland, M. V. Cortes, M. Bara

{"title":"Antimicrobial activity of Lafoensia pacari phenolics-containing extract against common bean phytopathogens","authors":"Waléria Ramos Nogueira de Souza, P. Vaz, A. Wendland, M. V. Cortes, M. Bara","doi":"10.1590/1983-40632022v5272726","DOIUrl":"https://doi.org/10.1590/1983-40632022v5272726","url":null,"abstract":"ABSTRACT Lafoensia pacari represents an alternative to control phytopathogens and common bean (Phaseolus vulgaris L.) diseases. This study aimed to investigate the chemical composition of L. pacari phenolics-containing extract obtained from leaves and assess its in vitro and in vivo inhibitory activity against Curtobacterium flaccumfaciens pv. flaccumfaciens, Xanthomonas axonopodis pv. phaseoli, Xanthomonas fuscans subsp. fuscans, Xanthomonas sp., Colletotrichum lindemuthianum, Fusarium oxysporum and Macrophomina phaseolina. The microbial susceptibility screening and the extract’s potential to reduce the anthracnose severity and the common bacterial blight were examined. Eleven phenolic compounds were identified, eight of which were described for the first time in L. pacari leaves: gentisic, caffeic, p-coumaric, protocatechuic and vanillic acids, luteolin, naringenin and quercetin. The L. pacari extract completely inhibited bacterial growth at the concentration of 0.62-1.25 %, as well as the mycelial growth of the C. lindemuthianum (BRM 007626) isolate at the concentration of 5 % (v/v). Under greenhouse conditions, the extract led to the control of the common bacterial blight caused by X. axonopodis pv. phaseoli (BRM 25302) in the Pérola bean cultivar and to a low efficiency in the control of anthracnose caused by C. lindemuthianum (BRM 007447) in the IPA 7419 cultivar.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":"16 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficiency of phonolite as a potassium source for Paiaguás palisadegrass Paiaguás栅栏草中phonolite作为钾源的效率

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Pesquisa Agropecuaria Tropical Pub Date : 2021-09-27 DOI: 10.1590/1983-40632021v5167857

Carlos Augusto Campos da Cruz, Valdeci Orioli Júnior, J. S. Bernardes, Mateus Martini Sargentim, G. A. Silva, Ana Clara Dutra Kochenborger

{"title":"Efficiency of phonolite as a potassium source for Paiaguás palisadegrass","authors":"Carlos Augusto Campos da Cruz, Valdeci Orioli Júnior, J. S. Bernardes, Mateus Martini Sargentim, G. A. Silva, Ana Clara Dutra Kochenborger","doi":"10.1590/1983-40632021v5167857","DOIUrl":"https://doi.org/10.1590/1983-40632021v5167857","url":null,"abstract":"ABSTRACT Potassium chloride (KCl) is the most widely used potassium source to meet crops requirements. However, Brazil’s dependence on imports to meet the national demand demonstrates the need to assess the efficiency of other sources of this nutrient. The present study aimed to assess the agronomic efficiency of phonolite in natura and its mixture with a water-soluble source (KCl), for Paiaguás palisadegrass. The experiment was conducted in a greenhouse, with a sandy clay loam typic Hapludox. A completely randomized block design was used, in a 3 x 5 factorial scheme, consisting of three K sources (KCl, phonolite and a 30 % of KCl + 70 % of phonolite blend) and five doses of the nutrient (0, 50, 100, 150 and 200 mg kg-1), with four replications. The phonolite doses promoted a linear increase in the dry weight production, albeit inferior to KCl for all the cuttings, whereas the KCl (30 %) and phonolite (70 %) blend showed a better fertilization efficiency than phonolite alone, which exhibited an intermediate effect. The agronomic efficiency was 29 % for the phonolite alone and 63 % for the blend, and the critical K levels in the soil and shoots were, respectively, 1.4 mmolc dm-3 and 8.7 g kg-1.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2021-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42726699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adaptability and stability of conventional soybean by GGE biplot analysis 利用GGE双图分析常规大豆的适应性和稳定性

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Pesquisa Agropecuaria Tropical Pub Date : 2021-08-16 DOI: 10.1590/1983-40632021v5167995

Marcos Paulo Carvalho, J. A. R. Nunes, E. L. Carmo, G. Simon, Rânia Nunes Oliveira Moraes

{"title":"Adaptability and stability of conventional soybean by GGE biplot analysis","authors":"Marcos Paulo Carvalho, J. A. R. Nunes, E. L. Carmo, G. Simon, Rânia Nunes Oliveira Moraes","doi":"10.1590/1983-40632021v5167995","DOIUrl":"https://doi.org/10.1590/1983-40632021v5167995","url":null,"abstract":"ABSTRACT The conventional soybean production has been re-establishing itself every year, due to the fact that the international market has demanded products with high agronomic performance and nutritional quality, free of genetically modified organisms. This study aimed to evaluate the adaptability of conventional soybean genotypes in the southwestern Goiás state (Rio Verde, Montividiu and Santa Helena de Goiás), Brazil, during the 2017/2018 and 2018/2019 crop seasons. A randomized blocks design was used, being tested eight genotypes (the cultivars BRS284, BRS283, BRS232, BRS317, NT11-1277, INT3459 and M6101 and the line NT1478SP). The grain and oil yields, as well as the oil and protein contents, were evaluated. Multi-environment analyses were performed using a heterogeneous residual variance model, and the GGE biplot analysis was used to describe the interrelationships between genotypes and environments. The most adapted and stable genotypes were BRS 317 for grain yield and BRS 283 for oil yield. They also corresponded more closely to the ideotype for the specific region, thus proving to be promising. NT1478SP showed the highest protein content. In the 2018/2019 crop season, Montividiu was more discriminating for the conventional soybean production, regarding grain and oil yields.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2021-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46830768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Partial sequencing of a putative Alstroemeria necrotic streak orthotospovirus isolate detected on lettuce in Colombia 在哥伦比亚莴苣上检测到的假定的Alstroemeria坏死条纹正形体病毒分离物的部分测序

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Pesquisa Agropecuaria Tropical Pub Date : 2021-08-10 DOI: 10.1590/1983-40632021v5168585

Diego Alejandro Jurado-Rincón, L. J. Rincón-Rivera, Angela María Vargas-Berdugo, A. González-Almario

引用次数: 1

Flowering induction in mango tree: updates, perspectives and options for organic agriculture 芒果树的开花诱导：有机农业的更新、前景和选择

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Pesquisa Agropecuaria Tropical Pub Date : 2021-08-04 DOI: 10.1590/1983-40632021v5168175

Adrielle Rodrigues Prates, P. G. U. Züge, S. Leonel, J. M. A. Souza, J. Ávila

{"title":"Flowering induction in mango tree: updates, perspectives and options for organic agriculture","authors":"Adrielle Rodrigues Prates, P. G. U. Züge, S. Leonel, J. M. A. Souza, J. Ávila","doi":"10.1590/1983-40632021v5168175","DOIUrl":"https://doi.org/10.1590/1983-40632021v5168175","url":null,"abstract":"ABSTRACT The artificial flowering induction in mango tree is the most important crop management in mango orchards and requires greater attention from growers. The management involves three steps: stoppage of plant growth, branch maturation and flowering induction with nitrates. The first stage starts with the application of paclobutrazol to the soil. However, problems with the use of excessive concentrations are common and lead to the accumulation of residues in the soil. In addition, the use of paclobutrazol is not allowed in organic agriculture. Therefore, this review article aimed to compile information about the updates and efforts to solve these problems in conventional mango crops, as well as identify alternatives for its organic management. In conventional orchards, the application of fulvic acids in association with paclobutrazol, as an alternative to the single use of paclobutrazol, was identified as a way to improve the absorption of the product by plants and, consequently, reduce the concentrations and residues in the soil. Researches involving pruning, girdling, fertilization and irrigation should be developed as an alternative to the use of paclobutrazol for the organic crop system of mango cultivars in tropical and subtropical regions.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2021-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49479021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Calcium particle film improves sweet potato growth and partitioning 钙颗粒膜改善甘薯生长和分配

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Pesquisa Agropecuaria Tropical Pub Date : 2021-08-01 DOI: 10.1590/1983-40632021V5167814

A. P. Oliveira, A. A. Santos, P. Fontes, M. Carnelossi, J. Fagundes, Luiz Fernando Ganassali de Oliveira Junior

引用次数: 0

Production components of sunflower cultivars at different sowing times 不同播期向日葵品种生产成分分析

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Pesquisa Agropecuaria Tropical Pub Date : 2021-07-23 DOI: 10.1590/1983-40632021v5168137

Ricardo Turchetto, L. Trombetta, Genesio Mário da Rosa, Gabriel Baraldi Volpi, Sinara Barros

引用次数: 2

Phenotypic variability of fruits and seeds in natural populations of Hymenaea stigonocarpa (Mart. Ex Hayne) 土香膜属自然居群果实和种子的表型变异。前海)

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Pesquisa Agropecuaria Tropical Pub Date : 2021-07-23 DOI: 10.1590/1983-40632021v5167292

Rodrigo Soares de Castro, Ariany Rosa Gonçalves, R. S. Braga-Ferreira, M. Telles, L. Chaves

{"title":"Phenotypic variability of fruits and seeds in natural populations of Hymenaea stigonocarpa (Mart. Ex Hayne)","authors":"Rodrigo Soares de Castro, Ariany Rosa Gonçalves, R. S. Braga-Ferreira, M. Telles, L. Chaves","doi":"10.1590/1983-40632021v5167292","DOIUrl":"https://doi.org/10.1590/1983-40632021v5167292","url":null,"abstract":"ABSTRACT Hymenaea stigonocarpa (Mart. Ex Hayne), popularly known as jatobá-do-cerrado, is a fruit tree widely distributed in the Brazilian Savanna, has multiple uses and is a promising genetic resource. This study aimed to physically characterize fruits and seeds of H. stigonocarpa, as well as to estimate the phenotypic variability at three hierarchical levels: populations, mother trees within populations, and fruits/seeds within mother trees. Fruits from six mother trees were sampled from each of the 25 natural populations found in the Brazilian Savanna. The morphometric characterization of 742 fruits was carried out by evaluating 10 quantitative traits in fruits and seeds. In addition, comparative analyses were performed between the average values of H. stigonocarpa and the botanical variety H. stigonocarpa var. brevipetiolata. Significant phenotypic variations were noticed at all hierarchical levels. A high phenotypic differentiation among the populations was observed for quantitative traits (fruit mass and size, pulp mass and seed mass), being higher when H. stigonocarpa var. brevipetiolata was included in the analysis.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2021-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43771574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3