Revista Brasileira de Engenharia Agrícola e Ambiental最新文献

Relationships between yellow and purple passion fruit variables 黄色和紫色百香果变量之间的关系

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2024-06-01 DOI: 10.1590/1807-1929/agriambi.v28n6e275006

B. G. Lopes, Gabriela M. Rodrigues, Afrânio M. C. Vieira, T. Savian, G. A. Faria

{"title":"Relationships between yellow and purple passion fruit variables","authors":"B. G. Lopes, Gabriela M. Rodrigues, Afrânio M. C. Vieira, T. Savian, G. A. Faria","doi":"10.1590/1807-1929/agriambi.v28n6e275006","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v28n6e275006","url":null,"abstract":"ABSTRACT Brazil is the world’s largest producer of passion fruit, with the species Passiflora edulis Sims (yellow and purple passion fruit) being the most popular commercially. Due to the great economic importance of this culture, seeking high productivity, phytotechnical quality, and maintenance of existing germplasms, among others, it is necessary to carry out studies of the most diverse types of this culture. In this crop, the use of multivariate techniques has increasingly driven studies on genetic differences between passion fruit species. Therefore, this research aimed to identify the variables that deserve greater emphasis in experiments with two commercial species of Passiflora: Passiflora edulis Sims f. edulis (purple passion fruit) and Passiflora edulis Sims (yellow passion fruit), verifying if the species differ from each other. For this purpose, principal component analysis, multivariate analysis of variance (MANOVA), and Hotelling’s T2 test were performed. The principal component analysis proved to be effective, allowing the removal of five variables for yellow passion fruit and six variables for purple passion fruit and yellow passion fruit present contrasting differences between them, being the explanatory variables for the purple passion fruit the external and internal color and for the yellow passion fruit length, diameter, and citric acid.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"2 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141229544","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

New organic substrates for seedling production in the transition zone between the Amazon-Cerrado biomes 亚马逊--塞拉多生物群落过渡区育苗的新型有机基质

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2024-06-01 DOI: 10.1590/1807-1929/agriambi.v28n6e279358

Aldenice O. Conceição, Hosana A. F. de Andrade, Carlos A. R. de M. Rego, Pedro A. de O. Morais, R. Y. F. Pereira, Andreza M. de Sousa, Gustavo A. de A. Santos, L. F. Moraes, N. Machado, R. R. S. Silva-Matos

{"title":"New organic substrates for seedling production in the transition zone between the Amazon-Cerrado biomes","authors":"Aldenice O. Conceição, Hosana A. F. de Andrade, Carlos A. R. de M. Rego, Pedro A. de O. Morais, R. Y. F. Pereira, Andreza M. de Sousa, Gustavo A. de A. Santos, L. F. Moraes, N. Machado, R. R. S. Silva-Matos","doi":"10.1590/1807-1929/agriambi.v28n6e279358","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v28n6e279358","url":null,"abstract":"ABSTRACT In the Amazon-Cerrado ecotone, increased costs from non-organic inputs and transportation render substrates more expensive, prompting the use of decomposed biomass from native palm stem for seedlig production. The study was carried out with the objective of evaluate the physicochemical characteristics of the decomposed biomass of babassu palms (BDB), carnauba (BDC), and buriti (BBU) compared to the commercial substrate (SC) via multivariate analysis. This study employed a database comprising 90 substrates, obtained from Maranhão, Brazil farms. These samples underwent physicochemical characterization following the Brazilian protocol for seedling substrates. The substrates based on BDB and BDC have pH and nutrient contents at acceptable values, in addition to lower potential acidity and high base saturation compared to BBU and SC substrates. Principal component analysis and hierarchical clustering revealed similarities between BDB, BDC and SC. Biomass decomposed from the stems of babassu and carnauba palms is recommended as an alternative substrate for seedling producers in the in the Amazon-Cerrado ecotone.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"1 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141230717","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

Photosynthetic pigments, growth, and production of cherry tomato under salt stress and hydrogen peroxide 盐胁迫和过氧化氢条件下樱桃番茄的光合色素、生长和产量

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2024-06-01 DOI: 10.1590/1807-1929/agriambi.v28n6e275968

J. Nóbrega, M. A. Guedes, G. S. Lima, H. Gheyi, L. A. A. Soares, L. A. Silva, S. S. Silva, Larissa A. Brito

{"title":"Photosynthetic pigments, growth, and production of cherry tomato under salt stress and hydrogen peroxide","authors":"J. Nóbrega, M. A. Guedes, G. S. Lima, H. Gheyi, L. A. A. Soares, L. A. Silva, S. S. Silva, Larissa A. Brito","doi":"10.1590/1807-1929/agriambi.v28n6e275968","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v28n6e275968","url":null,"abstract":"ABSTRACT Excess of salts in water and/or soil stands out as one of the stresses that compromise the development of crops, including cherry tomato, requiring the use of strategies that reduce salt stress effects, such as foliar application of hydrogen peroxide. Thus, the objective of this study was to evaluate the effect of foliar application of H2O2 on the contents of photosynthetic pigments, growth, and production of cherry tomato under irrigation water salinity. The design used was randomized blocks, in a 5 × 5 factorial scheme, with five values of electrical conductivity of water - ECw (0.3, 1.0, 1.7, 2.4, and 3.1 dS m-1) and five concentrations of hydrogen peroxide - H2O2 (0, 15, 30, 45, and 60 μM). Application of hydrogen peroxide at concentration of 60 μM attenuated the deleterious effects of salt stress on the growth and number of leaves of cherry tomato up to ECw of 3.1 dS m-1. Hydrogen peroxide concentration of 45 μM increased root dry mass, synthesis of chlorophyll b and total chlorophyll under electrical conductivity of water of 0.3 dS m-1 and synthesis of chlorophyll a up to ECw of 0.8 dS m-1. Foliar application of 30 μM reduced the effects of salt stress on leaf, shoot and total dry mass accumulation up to ECw of 3.1 dS m-1. Electrical conductivity of water from 1.41 dS m-1 reduced the production of cherry tomato.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"21 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141233236","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

Curly lettuce production using cassava wastewater as a potassium source 利用木薯废水作为钾源生产卷心菜

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2024-06-01 DOI: 10.1590/1807-1929/agriambi.v28n6e278380

J. Torres, D. M. S. Vieira, Antônio C. Barreto, H. C. D. O. Charlo, A. Loss, R. T. Thuler, R. Camargo, E. Lemes

{"title":"Curly lettuce production using cassava wastewater as a potassium source","authors":"J. Torres, D. M. S. Vieira, Antônio C. Barreto, H. C. D. O. Charlo, A. Loss, R. T. Thuler, R. Camargo, E. Lemes","doi":"10.1590/1807-1929/agriambi.v28n6e278380","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v28n6e278380","url":null,"abstract":"ABSTRACT Cassava wastewater (CWW) is a natural biofertilizer successfully tested as a source of K in long-cycle crops; however, it still needs to be better evaluated in short-cycle crops. This study aimed to evaluate the use of CWW as a source of K in the growth, yield, and physicochemical quality of curly lettuce. The study was conducted in a greenhouse, in a randomized block design arranged in a 5 × 2 + 1 factorial scheme, with four replicates. Five CWW doses were evaluated as an exclusive source of K: 0, 60, 120, 180, and 240 kg ha-1 of K2O; two forms of application: 1-total dose at planting: 2-application of 50% of the dose at planting + 50% of the dose in topdressing, and an additional treatment: 100% mineral fertilization at 120 kg ha-1 of K2O dose, using KCl as the source. The number of leaves (NL), plant height (PH), fresh mass (FM), dry mass (DM), moisture (MO), ashes (ASH), fibers (FB), lipids (LIP), proteins (PTN), and carbohydrates (CHO) contents were evaluated. All agronomic attributes of lettuce showed lower values when fertilized only with CWW than mineral fertilization. Lettuce fertilized only with CWW, depending on total or split application and dose, showed higher ASH, FB, LIP, PTN, and CHO contents reaching 4.05, 3.97, 1.75, 7.11, and 3.63%, respectively, compared to mineral fertilization. The CWW can potentially be used as a complementary K source in lettuce cultivation, as its exclusive use does not replace traditional mineral fertilization.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"59 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141231718","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

Heavy rainfall events in the state of Acre, western Amazonia 亚马孙西部阿克里州的暴雨事件

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2024-06-01 DOI: 10.1590/1807-1929/agriambi.v28n6e275802

José G. do V. Moreira, M. D. P. Almeida, S. Silva, Carolina de L. A. Montefusco, S. N. Duarte, Fernando C. Mendonça

{"title":"Heavy rainfall events in the state of Acre, western Amazonia","authors":"José G. do V. Moreira, M. D. P. Almeida, S. Silva, Carolina de L. A. Montefusco, S. N. Duarte, Fernando C. Mendonça","doi":"10.1590/1807-1929/agriambi.v28n6e275802","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v28n6e275802","url":null,"abstract":"ABSTRACT Preventing the occurrence of extreme hydrological events exceeds the current abilities of humanity. However, using adequate tools to estimate the probability associated with different values of hydrological variables, such as heavy rainfall, can help mitigate social and environmental damage. This study aimed to verify the hypothesis that the records of maximum rainfall, at different intervals of duration, in the three main rainfall stations in the state of Acre fit the log-normal distribution of two parameters (LN2) and, therefore, to evaluate the events of heavy rainfalls, based on the association between the duration of the rain and the return period. The equations conformed to the classic model of the LN2 model using the method of maximum likelihood once the baseline assumption of stationarity was met using the Mann-Kendall test. Adherence to the model was verified using the Anderson-Darling test. The adjusted distributions allowed for estimating the rainfall intensity at different durations and return periods for the cities of Cruzeiro do Sul, Tarauacá, and Rio Branco and are relevant elements for planning actions aimed at strengthening the components of water safety in the state of Acre.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141230413","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

Method for inspection of atmospheric discharge protection systems: Grain storage plants 大气排放保护系统的检查方法：谷物储存厂

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2024-05-01 DOI: 10.1590/1807-1929/agriambi.v28n5e272219

P. Kunh, Divair Christ, S. R. M. Coelho, E. A. Konopatzki

{"title":"Method for inspection of atmospheric discharge protection systems: Grain storage plants","authors":"P. Kunh, Divair Christ, S. R. M. Coelho, E. A. Konopatzki","doi":"10.1590/1807-1929/agriambi.v28n5e272219","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v28n5e272219","url":null,"abstract":"ABSTRACT Brazil has the highest incidence of atmospheric discharges, on average of 77.8 million hitting the country yearly. Companies providing post-harvest services have a high monetary value concentrated in their predominantly metallic structures. Atmospheric discharge protection systems (ADPS) are used in this context to protect the facilities and people, composed of several elements that require visual inspection with a certain periodicity, an activity framed as working at height. This research aimed to establish a methodology for employing a Remotely Piloted Aircraft System (RPAS) in the visual analysis of the operational condition of external atmospheric discharge protection systems components located in grain storage structures to collect information during the preliminary risk analysis and planning of activities at height. A survey of the current literature related to the subject was carried out, in addition to the norms, inspection agencies, and operational prerequisites of this type of equipment in the national territory. Finally, a method was created and validated based on the inspection checklist with the main points for checking, which generates a score that represents the urgency level of intervention, applied in a unit located in western Paraná, Brazil, on 11/28/2022. This procedure eliminated the risk of workers falling during the planning and inspection stage of the structures, which helped the qualified professional to issue the technical inspection report more quickly. The disadvantage is related to the dependence on favorable weather conditions.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"235 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141028757","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

Morphophysiology and postharvest quality of hydroponic lettuce cultivars grown under high temperature 高温下水培莴苣品种的形态生理学和采后质量

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2024-05-01 DOI: 10.1590/1807-1929/agriambi.v28n5e277774

R. Bittencourt, M. L. S. Silva Júnior, I. Sampaio, Erika C. F. Bittencourt, Rodolfo I. N. Santos, Alyam D. Coelho, Stefany P. R. Figueiredo, Italo C. F. P. de M. Bittencourt, H. D. S. Lemos Neto

{"title":"Morphophysiology and postharvest quality of hydroponic lettuce cultivars grown under high temperature","authors":"R. Bittencourt, M. L. S. Silva Júnior, I. Sampaio, Erika C. F. Bittencourt, Rodolfo I. N. Santos, Alyam D. Coelho, Stefany P. R. Figueiredo, Italo C. F. P. de M. Bittencourt, H. D. S. Lemos Neto","doi":"10.1590/1807-1929/agriambi.v28n5e277774","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v28n5e277774","url":null,"abstract":"ABSTRACT Lettuce (Lactuca sativa) is the most economically important leafy vegetable in Brazil, with the crisp type being the most popular among producers. However, in regions with hot climates, lettuce has production limitations due to bolting, requiring knowledge on the behavior of cultivars available on the market. Thus, the objective of the present study was to characterize the performance of crisp lettuce cultivars in terms of their productive, physiological, and postharvest quality aspects when grown under hydroponic cultivation and high temperature conditions. The assay was performed in a greenhouse and the plants were grown in a hydroponic system of DFT type. The average temperature during the experiment was 30.33 °C. The experimental design used was completely randomized with nine treatments (Veneranda, Cristina, Olinda, Mônica, Cinderela, Grand Rapids, Itapuã Super, Crocantela, and Simpson Black Seed), with four replications. The cultivars were analyzed in terms of their productive, physiological, and postharvest quality performances. The Olinda and Cristina cultivars showed the best performance in growth, physiological, and postharvest variables. However, the cultivars had distinct sensory characteristics. Bolting negatively affected gas exchange, production, and postharvest quality of lettuce cultivars Veneranda, Mônica, Grand Rapids, and Cinderela. In addition, it was observed that the pigment content was not determinant for the expression of bolting. Therefore, this study recommends the use of cultivars Olinda and Cristina for the hydroponic cultivation under high temperature conditions.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"31 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141037457","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

Ecophysiological aspects and biomass production of soybean genotypes under soil flooding stress conditions 土壤洪水胁迫条件下大豆基因型的生态生理和生物量产量

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2024-05-01 DOI: 10.1590/1807-1929/agriambi.v28n5e277195

Silvana F. da Silva, Marcio de O. Martins, Paulo V. A. das Chagas, G. L. Santos, A. P. Barros Júnior, L. M. D. Silveira, J. Ribeiro

{"title":"Ecophysiological aspects and biomass production of soybean genotypes under soil flooding stress conditions","authors":"Silvana F. da Silva, Marcio de O. Martins, Paulo V. A. das Chagas, G. L. Santos, A. P. Barros Júnior, L. M. D. Silveira, J. Ribeiro","doi":"10.1590/1807-1929/agriambi.v28n5e277195","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v28n5e277195","url":null,"abstract":"ABSTRACT The objective of this study was to evaluate the ecophysiological aspects and biomass production of three soybean genotypes subjected to soil flooding in the vegetative and/or reproductive stages. The design adopted was completely randomized with 5 replications, in a 3 x 3 factorial arrangement, with three soybean genotypes: PELBR 17-46, PELBR 15-7016, and 75I77RSF IPRO; and three water treatment conditions: soil flooding for 10 days in the vegetative period + 10 days in the reproductive period; soil flooding for 10 days only in the reproductive period, and the control treatment, where the soil was maintained at 70% of field capacity. There was a reduction in the relative water content for the PELBR 15-7016 and PELBR 17-46 genotypes in the vegetative/reproductive stages and in the reproductive stage, while for the 75I77RSF IPRO there was no difference. The levels of chlorophyll a, chlorophyll b, and total chlorophyll were reduced only for the PELBR 15-7016 and 75I77RSF IPRO genotypes. The dry matter in the leaves and roots was lower for PELBR 17-46 and PELBR 15-7016 when subjected to stress in the R2 soybean stage and for the grain production. PELBR 17-46 and PELBR 15-7016 genotypes are more susceptible to stress, while the 75I77RSF IPRO showed mechanisms to overcome waterlogging stress.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"4 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141055112","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

Canonical correlation between clogging agents and performance of drippers operating with aquaculture effluents 堵塞剂与使用水产养殖污水的滴管性能之间的典型相关性

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2024-05-01 DOI: 10.1590/1807-1929/agriambi.v28n5e274127

Laio A. L. de Paiva, R. O. Batista, R. R. D. Silva, Tiago D. da C. Moniz, Francisco I. S. Augusto, Weverton A. da Cunha, Ricardo A. Rodrigues Filho, S. D. Melo, Lucas R. da Costa, José F. de Medeiros, J.C.S. Portela, Antonio G. R. Araújo

{"title":"Canonical correlation between clogging agents and performance of drippers operating with aquaculture effluents","authors":"Laio A. L. de Paiva, R. O. Batista, R. R. D. Silva, Tiago D. da C. Moniz, Francisco I. S. Augusto, Weverton A. da Cunha, Ricardo A. Rodrigues Filho, S. D. Melo, Lucas R. da Costa, José F. de Medeiros, J.C.S. Portela, Antonio G. R. Araújo","doi":"10.1590/1807-1929/agriambi.v28n5e274127","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v28n5e274127","url":null,"abstract":"ABSTRACT The canonical correlation is used to correlate groups of distinct variables. The objective of this study was to use canonical correlation analysis to evaluate the interaction between water quality attributes clogging-causing and the hydraulic performance of non-pressure compensating drippers operating with dilutions of aquaculture effluent in well water. The experiment was in a completely randomized design in a split-split-plot scheme with three replicates, with five dilutions in the plots (Dilution 1: 100% aquaculture effluent; Dilution 2: 75% aquaculture effluent + 25% well water; Dilution 3: 50% aquaculture effluent + 50% well water; Dilution 4: 25% aquaculture effluent + 75% well water; and Dilution 5: 100% well water), three emitters in the sub-plots (ST (1.6 L h-1), SL (1.6 L h-1) and NJ (1.7 L h-1)), and three operating times in the sub-subplots (0, 80 and 160 hours, in which 0 hours operating time means the start of evaluations). The statistical analyses performed were correlation matrix and canonical analysis. The canonical correlation analysis indicated that when the concentrations of attributes increase, the hydraulic performance of the drippers decreases. The interaction of this group of attributes indicates that the clogging of drippers operating with the five dilutions of aquaculture effluent in well water occurs by the combined action of physical, chemical, and biological agents. The ST dripper was the least sensitive to the group of quality attributes of the dilutions, whereas the most sensitive was the SL dripper.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"41 S1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141032746","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

Predicting the spatial distribution of water applied by subsurface drip in clay soil 预测粘土中地下滴水的空间分布

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2024-05-01 DOI: 10.1590/1807-1929/agriambi.v28n5e277102

Mayara O. Rocha, Amilton G. S. de Miranda, Policarpo A. da Silva, Adunias dos S. Teixeira, F. Cunha

{"title":"Predicting the spatial distribution of water applied by subsurface drip in clay soil","authors":"Mayara O. Rocha, Amilton G. S. de Miranda, Policarpo A. da Silva, Adunias dos S. Teixeira, F. Cunha","doi":"10.1590/1807-1929/agriambi.v28n5e277102","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v28n5e277102","url":null,"abstract":"ABSTRACT In subsurface drip irrigation systems, knowledge of the three-dimensional advancement of water in the soil is essential for selecting emitter spacing and installation depth. This research aimed to develop and test different mathematical models to estimate water distribution in the soil under subsurface drip irrigation. The experiment was set up in a completely randomized design with four replicates. The experimental arrangement was of split-plot in time, with different dripper installation depths in the plots (0, 5, 10, 15, 20, 25, and 30 cm) and in the subplots irrigation application times (0, 60, 120, 180, and 240 min). Three models (SLIDE 6.0, polynomial regression, and SPSS 2.0) were constructed to estimate the water distribution in the soil profile. All models showed statistical indexes within acceptable ranges. In comparison, the model generated in the numerical software SLIDE 6.0 was the one that presented the best performance, followed by SPSS 2.0 and polynomial regression. The generated models were efficient and simple, producing good results in predicting the water distribution in the soil profile under the studied conditions.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141025494","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