Revista Brasileira de Engenharia Agrícola e Ambiental最新文献_第7页

Tolerance of sour passion fruit cultivars to salt stress in a semi-arid region 半干旱区酸性百香果品种对盐胁迫的耐受性

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-10-01 DOI: 10.1590/1807-1929/agriambi.v27n10p785-794

G. S. Lima, W. B. B. Souza, F. J. S. Paiva, L. A. A. Soares, R. A. F. Torres, S. T. A. Silva, H. Gheyi, K. P. Lopes

{"title":"Tolerance of sour passion fruit cultivars to salt stress in a semi-arid region","authors":"G. S. Lima, W. B. B. Souza, F. J. S. Paiva, L. A. A. Soares, R. A. F. Torres, S. T. A. Silva, H. Gheyi, K. P. Lopes","doi":"10.1590/1807-1929/agriambi.v27n10p785-794","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n10p785-794","url":null,"abstract":"ABSTRACT Given the quantitative scarcity of low-salinity water resources in the Brazilian semi-arid region, it is necessary to use water with a high concentration of salts. Thus, identifying salt-stress tolerant cultivars of crops is an alternative for expanding irrigated agriculture. The objective of this study was to evaluate the tolerance of passion fruit cultivars as a function of irrigation water electrical conductivity. The experimental design was randomized blocks, in a 5 × 3 factorial scheme, whose treatments consisted of the combination of five values of electrical conductivity of irrigation water - ECw (0.3, 1.1, 1.9, 2.7, and 3.5 dS m-1) and three sour passion fruit cultivars (BRS GA1, BRS SC1, and SCS437, with three replicates. Electrical conductivity of water from 0.3 dS m-1 reduces the relative water content, gas exchange, and the number of fruits and increased electrolyte leakage in the leaf blade of passion fruit plants, at 153 days after transplantation. The passion fruit cultivars BRS GA1, BRS SC1, and SCS437 were classified as sensitive, with threshold electrical conductivity of water of 0.3, 1.0, and 0.3 dS m-1, respectively.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"140 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76610022","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

Rice-irrigation automation using a fuzzy controller and weather forecast 水稻灌溉自动化采用模糊控制器和天气预报

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-10-01 DOI: 10.1590/1807-1929/agriambi.v27n10p779-784

V. Uberti, A. Abaide, L. L. Pfitscher, L. R. Prade, M. Evaldt, D. Bernardon, Paulo R. da S. Pereira

{"title":"Rice-irrigation automation using a fuzzy controller and weather forecast","authors":"V. Uberti, A. Abaide, L. L. Pfitscher, L. R. Prade, M. Evaldt, D. Bernardon, Paulo R. da S. Pereira","doi":"10.1590/1807-1929/agriambi.v27n10p779-784","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n10p779-784","url":null,"abstract":"ABSTRACT This paper presents a new irrigation controller based on fuzzy logic that uses weather forecast data and crop characteristics to evaluate the real-time need for irrigation of rice crops and to increase the efficiency of irrigation systems. Tests were performed with real data obtained from three different crop fields in Rio Grande do Sul State, Brazil, and on four meteorologically different days of the 2021/2022 harvest to demonstrate the ability to reduce power consumption for irrigation; the power consumption on days of heavy precipitation was above 80% under all simulated conditions. Depending on the size of the crop and the tested meteorological conditions, the minimum reductions in energy consumption were between 33-66% on dry days with no precipitation forecast. More than 15% reduction in the flow of the water catchment was also observed, even in the most adverse farming scenarios. This study reveals the necessity for technological advances in rice-crop irrigation systems to increase the efficiency of flood irrigation in large areas for reducing electricity consumption, increasing the profitability of rural producers, and ensuring the preservation and availability of water resources.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"132 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76125701","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

Maize-ruzigrass intercropping, nitrogen fertilization and plant density improve the performance of soybean grown in succession 玉米-紫穗草间作、施氮和密度对大豆连作性能有改善作用

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-10-01 DOI: 10.1590/1807-1929/agriambi.v27n10p764-771

A. Coelho, L. Sangoi, M. J. L. C. Sapucay, Felipe Bratti, H. Debiasi, J. C. Franchini, Luiz G. Garbelini, A. A. Balbinot Junior

{"title":"Maize-ruzigrass intercropping, nitrogen fertilization and plant density improve the performance of soybean grown in succession","authors":"A. Coelho, L. Sangoi, M. J. L. C. Sapucay, Felipe Bratti, H. Debiasi, J. C. Franchini, Luiz G. Garbelini, A. A. Balbinot Junior","doi":"10.1590/1807-1929/agriambi.v27n10p764-771","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n10p764-771","url":null,"abstract":"ABSTRACT Second-crop maize-ruzigrass (Urochloa ruziziensis) intercropping, nitrogen (N) fertilization, and high maize plant densities enhance biomass production and N cycling, which may favor soybean growth and yield in the following season. This study aimed to assess the effects of second-crop maize-ruzigrass intercropping, N top dressing, and maize plant density on straw production in autumn/winter, N cycling, and agronomic performance of soybean crops grown in succession. Field experiments were installed in the 2018/2019 and 2019/2020 seasons using a randomized complete block design with split-split plots and four replications. The following factors were investigated: cropping system (sole maize and maize intercropped with ruzigrass), N top dressing (0 and 80 kg ha-1), and maize plant density (40, 60, 80, and 100 thousand plants ha-1). Maize-ruzigrass intercropping improved straw yield (2,365 kg ha-1) and N cycling (50 kg ha-1), and increased soybean yield in the following season (232 kg ha-1). N fertilization of maize increased soybean grain yield by 180 kg ha-1. Maize plant density did not influence the performance of succeeding soybean crops, regardless of the growing season.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"65 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74316929","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: 1

Uses of mid-infrared spectroscopy and chemometric models for differentiating between dried cocoa bean varieties 使用中红外光谱和化学计量模型区分干可可豆品种

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-10-01 DOI: 10.1590/1807-1929/agriambi.v27n10p803-810

G. A. Collazos-Escobar, Y. Barrios-Rodríguez, Andrés F. Bahamón-Monje, N. Gutiérrez-Gúzman

{"title":"Uses of mid-infrared spectroscopy and chemometric models for differentiating between dried cocoa bean varieties","authors":"G. A. Collazos-Escobar, Y. Barrios-Rodríguez, Andrés F. Bahamón-Monje, N. Gutiérrez-Gúzman","doi":"10.1590/1807-1929/agriambi.v27n10p803-810","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n10p803-810","url":null,"abstract":"ABSTRACT Generally, the taxonomic classification of cocoa beans is based on the theobromine/caffeine ratio determined using high-performance liquid chromatography (HPLC). However, this technique involves laborious and time-consuming calculations. Attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy is a valuable, effective, and rapid tool for analyzing the chemical composition of food products. The objective of this study was to examine the potential of ATR-FTIR combined with chemometric tools such as principal component analysis (PCA), linear discriminant analysis (LDA), and partial least squares regression-discriminant analysis (PLS-DA) to discriminate between the Trinitario and Forastero dry bean cocoa varieties defined by theobromine and caffeine measurements via HPLC. The cocoa varieties were evaluated using HPLC analysis of 36 dry cocoa bean samples to determine the theobromine/caffeine ratio. Moreover, ATR-FTIR spectra were analyzed in the mid-infrared (MIR) region, and signals associated with theobromine and caffeine were identified and analyzed using the LDA and PLS-DA models. The LDA and PLS-DA models allowed the satisfactory differentiation between cocoa varieties, providing overall prediction capacity values of 98.2 ± 1.8% and 96.1 ± 2.4%, respectively. The results show the potential of ATR-FTIR spectroscopy for the reliable, fast, and easy differentiation of dried cocoa beans.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88690696","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

Chemical properties of soils submitted to the application of a bioactivator and basalt and serpentinite powders 应用生物活化剂、玄武岩和蛇纹岩粉末后土壤的化学性质

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-10-01 DOI: 10.1590/1807-1929/agriambi.v27n10p811-819

Alves A. Alovisi, A. M. T. Alovisi, Meriane M. Taques, E. Medeiros, L. C. F. D. Souza, Cleidimar J. Cassol

{"title":"Chemical properties of soils submitted to the application of a bioactivator and basalt and serpentinite powders","authors":"Alves A. Alovisi, A. M. T. Alovisi, Meriane M. Taques, E. Medeiros, L. C. F. D. Souza, Cleidimar J. Cassol","doi":"10.1590/1807-1929/agriambi.v27n10p811-819","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n10p811-819","url":null,"abstract":"ABSTRACT Dependence on external raw materials, the high cost of fertilizers, and the search for more sustainable alternatives have encouraged research with remineralizers. This study aimed to evaluate the effect of adding remineralizers associated or not with a bioactivator on pH, H+Al, Al, P, and K in two soils after four incubation times. A completely randomized experimental design was used in a 5 x 2 x 2 x 2 factorial scheme, as follows: doses of remineralizers (0, 2, 4, 8, and 16 Mg ha-1), bioactivator (with and without application), type of remineralizer (basalt and serpentinite), and soil class (Oxisol and Entisol), with four replications. The soils were incubated for 30, 90, 120, and 240 days after the treatment applications. The samples were submitted to pH, Al, H+Al, P, and K analyses at the end of each incubation period. The use of increasing doses of remineralizers favored an increase in pH, P, and K and a reduction in Al and H+Al in the studied soils. Serpentinite powder was more efficient in neutralizing soil acidity, while basalt powder was more efficient in providing P and K to soils. The bioactivator reduced the reaction time of the remineralizers and favored the increase in K availability.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"7 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80348381","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

Use of glyphosate in the management of Panicum maximum cv. BRS Zuri intercropped with maize 草甘膦在大茴香病防治中的应用。BRS Zuri间作玉米

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-10-01 DOI: 10.1590/1807-1929/agriambi.v27n10p795-802

C. H. D. L. E. Silva, Carlos E. L. Mello, J. O. D. Silva, A. Jakelaitis, R. P. Marques, Gustavo D. de Sousa, Elias J. da Silva

{"title":"Use of glyphosate in the management of Panicum maximum cv. BRS Zuri intercropped with maize","authors":"C. H. D. L. E. Silva, Carlos E. L. Mello, J. O. D. Silva, A. Jakelaitis, R. P. Marques, Gustavo D. de Sousa, Elias J. da Silva","doi":"10.1590/1807-1929/agriambi.v27n10p795-802","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n10p795-802","url":null,"abstract":"ABSTRACT The intercropping between maize and forage species is an alternative commonly used within farming systems. Competition among crops may be a limiting factor in intercropping, compromising maize and forage yield. Although necessary, the literature does not provide satisfactory answers on the interaction of forage crops launched in the market recently, such as BRS Zuri, intercropped with maize. Therefore, techniques such as the use of herbicide subdoses come in as an option to suppress forage growth, making simultaneous cultivation feasible. Thus, the present study aimed to evaluate the effects of glyphosate herbicide subdoses on the development of Panicum maximum cv. BRS Zuri intercropped with Roundup Ready® (RR) maize and how this interaction reflects on the weed population, forage yield, and biometric and yield variables of maize. The experimental design was randomized blocks with treatments consisting of six subdoses of glyphosate herbicide (0, 48, 96, 240, 480, and 960 g acid equivalent [a.e.] ha-1) and maize in monoculture with four replications. For the conditions of this study, the dose of 480 g a.e. ha-1 of glyphosate may be an alternative since there was weed suppression and adequate forage development. Maize yield was not affected by the presence of forage.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81415535","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

Nonlinear modeling of liming reaction and extractable base curves 石灰化反应的非线性建模及可提取碱曲线

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-10-01 DOI: 10.1590/1807-1929/agriambi.v27n10p820-827

J. Viana, M. R. D. Albuquerque Filho, Flávia C. dos Santos, Daniela de A. Ladeira

{"title":"Nonlinear modeling of liming reaction and extractable base curves","authors":"J. Viana, M. R. D. Albuquerque Filho, Flávia C. dos Santos, Daniela de A. Ladeira","doi":"10.1590/1807-1929/agriambi.v27n10p820-827","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n10p820-827","url":null,"abstract":"ABSTRACT Modeling the response of soils to liming is important for understanding neutralization reactions and predicting lime residual effects. Models based on simple or quadratic polynomial equations are the most used due to their simplicity and ease of fitting; however, they fail to reproduce a realistic soil response to liming, indicating a decrease in pH as the lime dose is increased after reaching a maximum point. Thus, several nonlinear functions were tested and compared to polynomial models, using a dataset from a liming test conducted on a sandy clay loam soil in a farm. The best-fitting models for pH data were the Mitscherlich, three-parameter logistic, and Morgan-Mercer-Flodin models. The best-fitting models for exchangeable Ca+2 + Mg+2 data were Skaggs et al., Gompertz, and Morgan- Mercer-Flodin. The use of the proposed T index, which ranks models based on their residual standard error and Akaike information criterion values, combined with constraints on extrapolation values, was useful for selecting models that are statistically robust and empirically coherent.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77948854","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

Hydrogen peroxide (H2O2) improves ion homeostasis in coriander plants under salt stress 过氧化氢(H2O2)改善盐胁迫下香菜植物离子稳态

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-09-01 DOI: 10.1590/1807-1929/agriambi.v27n9p729-735

P. C. C. Silva, H. Gheyi, Héssica S. Evangelista, Karine da S. de Deus, A. D. A. Azevedo Neto

{"title":"Hydrogen peroxide (H2O2) improves ion homeostasis in coriander plants under salt stress","authors":"P. C. C. Silva, H. Gheyi, Héssica S. Evangelista, Karine da S. de Deus, A. D. A. Azevedo Neto","doi":"10.1590/1807-1929/agriambi.v27n9p729-735","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n9p729-735","url":null,"abstract":"ABSTRACT Priming with hydrogen peroxide (H2O2) contributes positively to the increase of salt tolerance in plants. Thus, this study aims to evaluate the effect of H2O2 as an attenuator of the negative effects induced by salinity on coriander plants grown in a hydroponic system. The coriander seeds were pretreated with different H2O2 concentrations (0.1, 1, 10, and 100 mM). The coriander plants were grown in nutrient solutions without presence of NaCl for control treatment (T1), while the other five treatments received 50 mM NaCl: T2 (absence of H2O2 in seed pretreatment), T3, T4, T5, and T6 corresponding to seed pretreatment with H2O2 at concentrations of 0.1, 1, 10, and 100 mM, respectively, in a completely randomized design with four replicates. In general, salinity reduced the production of shoot fresh and dry mass of coriander plants. However, the pretreatment with H2O2 significantly increased the salt tolerance of plants. H2O2 acted as a metabolic signal, improving the ion homeostasis by decreasing Na+ and/or Cl- contents and increasing K+ content in leaves. The multivariate analysis revealed an opposite effect between the Na+ and K+ contents, in addition, to indicating that these results can directly affect the growth of coriander plants.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"451 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77043176","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

Artificial intelligence for small hydroponics farms employing fuzzy logic systems and economic analysis 采用模糊逻辑系统和经济分析的小型水培农场人工智能

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-09-01 DOI: 10.1590/1807-1929/agriambi.v27n9p690-697

Anugerah F. Amalia, H. S. Rahayu, Y. P. Rahardjo, Lintje Hutahaean, E. Rohaeni, C. Indrawanto, R. A. Saptati, V. Siagian, Abdul Waris

{"title":"Artificial intelligence for small hydroponics farms employing fuzzy logic systems and economic analysis","authors":"Anugerah F. Amalia, H. S. Rahayu, Y. P. Rahardjo, Lintje Hutahaean, E. Rohaeni, C. Indrawanto, R. A. Saptati, V. Siagian, Abdul Waris","doi":"10.1590/1807-1929/agriambi.v27n9p690-697","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n9p690-697","url":null,"abstract":"ABSTRACT The application of artificial intelligence (AI) in modern agriculture has attracted increasing attention since its automation has the potential to accelerate food production with efficiency in resource use. Fuzzy logic, as one AI method, can be applied in hydroponics as an automation function of a nutrient mixing machine. There have been some inventions of nutrient mixing machines in commercial-scale agribusiness but not yet at the level of the small and medium farms that are mostly found in developing countries. This study constructed a hydroponics nutrient mixing machine employing a fuzzy logic method, calculated the machine’s efficiency, and evaluated its economic application. The automated nutrient mixing machine using fuzzy logic was efficient, and both theoretical field capacity and actual field capacity indicators were higher with the use of the nutrient mixing machine compared to manual nutrient mixing. This machine saves 78% of the labor normally used for mixing nutrients, with a saving of up to 42.86% in the nutrients used compared with mixing manually.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83669695","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

Inoculation methods of Azospirillum brasilense in lettuce and arugula in the hydroponic system 莴苣和芝麻菜水培系统中巴西氮螺旋菌的接种方法

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-09-01 DOI: 10.1590/1807-1929/agriambi.v27n9p653-662

C. E. D. S. Oliveira, I. M. B. Gato, Vitor S. F. D. Moreira, A. Jalal, Thaissa J. S. S. Oliveira, J. R. Oliveira, G. C. Fernandes, M. C. T. Teixeira Filho

{"title":"Inoculation methods of Azospirillum brasilense in lettuce and arugula in the hydroponic system","authors":"C. E. D. S. Oliveira, I. M. B. Gato, Vitor S. F. D. Moreira, A. Jalal, Thaissa J. S. S. Oliveira, J. R. Oliveira, G. C. Fernandes, M. C. T. Teixeira Filho","doi":"10.1590/1807-1929/agriambi.v27n9p653-662","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n9p653-662","url":null,"abstract":"ABSTRACT: Lettuce and arugula are the most cultivated leafy vegetables in hydroponic systems in the world, and the little information about Azospirillum brasilense effects in research in this system makes it necessary to verify the best method of inoculation of these bacteria. Therefore, this study aimed to verify the beneficial effects of inoculation methods of A. brasilense on plant growth and nutrition of lettuce and arugula grown in the hydroponic system. The study was conducted in a greenhouse with 30% shading. A randomized block design with five replicates in a 4 × 2 factorial scheme was used. Four A. brasilense inoculation methods (non-inoculated, foliar application, nutrient solution, and nutrient solution + foliar application) and two leafy vegetable species - arugula and lettuce - were evaluated. All inoculation methods improved plant height, shoot fresh and dry mass, root fresh and dry mass, fresh leaf yield, leaf chlorophyll index, accumulation of nitrogen, potassium, calcium, sulfur, phosphorus, iron, manganese, and copper and reduced nitrate accumulation in shoot and root of arugula and lettuce. Inoculation via nutrient solution + foliar application of A. brasilense is the most suitable for hydroponic arugula cultivation because it provides greater fresh leaf yield. All inoculation methods increased leaf yield in hydroponic lettuce. Hydroponic arugula and lettuce plants showed greater accumulation of nutrients and plant growth with less nitrate accumulation in the shoot under inoculation with A. brasilense.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83204919","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