Revista Brasileira de Engenharia Agrícola e Ambiental最新文献_第10页

Selection of lima bean accessions for fresh and dry production 选择新鲜和干燥生产的利马豆原料

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-08-01 DOI: 10.1590/1807-1929/agriambi.v27n8p625-631

Loren R. Damas, P. A. Barroso, W. V. D. ASSUNÇÃO NETO, Â. C. D. A. Lopes, J. J. D. Silva Junior, R. L. F. Gomes, A. M. Medeiros

{"title":"Selection of lima bean accessions for fresh and dry production","authors":"Loren R. Damas, P. A. Barroso, W. V. D. ASSUNÇÃO NETO, Â. C. D. A. Lopes, J. J. D. Silva Junior, R. L. F. Gomes, A. M. Medeiros","doi":"10.1590/1807-1929/agriambi.v27n8p625-631","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n8p625-631","url":null,"abstract":"ABSTRACT The selection of lima bean accessions in the fresh and dry stages is an excellent tool to increase crop yield in Brazil and ensure a source of vegetable protein for the population. Principal component analysis and nonparametric indices can be used to identify promising accessions based on the desired agronomic variables. The aim of the present study was to select accessions from traditional lima bean varieties in the fresh and dry stages using principal component analysis and nonparametric selection indices. The experiment consisted of a randomized block design, evaluating 13 treatments in four replicates. The experimental plot contained 20 plants in its study area. The first two principal components for the two stages explained more than 80% of the variation found among the accessions. The Mulamba & Mock and Genotype-Ideotype selection indices were efficient in classifying promising varieties for breeding programs. The UFPI 1111 accession can be used in fresh lima bean production, and its UFPI 1248 and 1294 counterparts in lima bean breeding programs.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81047686","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

Sampling intensity and size to evaluate harvest losses in soybean crops 评价大豆作物收获损失的采样强度和大小

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-08-01 DOI: 10.1590/1807-1929/agriambi.v27n8p593-599

D. Lambrecht, A. D. Lúcio, T. N. Martin, Antonia B. S. Feldmann, Rogério P. Amaral, Iuri de O. Buligon, Thauan de C. Tolfo, M. Diel

{"title":"Sampling intensity and size to evaluate harvest losses in soybean crops","authors":"D. Lambrecht, A. D. Lúcio, T. N. Martin, Antonia B. S. Feldmann, Rogério P. Amaral, Iuri de O. Buligon, Thauan de C. Tolfo, M. Diel","doi":"10.1590/1807-1929/agriambi.v27n8p593-599","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n8p593-599","url":null,"abstract":"ABSTRACT Proper sampling of grain losses during harvesting operations, with reliable and efficient sizing of sample, is necessary for an efficient adjustment of the harvester to avoid harvest losses. Thus, the objective of this study was to estimate sampling intensity and sample size for harvest loss evaluations in soybean crops. Sampling was carried out in five locations with soybean crops, evaluating three different harvesters. Harvest losses were measured using square wooden frames (50 × 50 cm), which were arranged on the ground longitudinally across the harvester header width after its passage; this process was repeated 25 times at each location. The greatest harvester header width in Location 1 enabled to simulate different sample sizes for this location (50 × 100, 50 × 150, 50 × 200, and 50 × 250 cm). Only one sample size (50 × 100 cm) was used for the simulations in the other locations. Sampling only half the harvester header width is recommended to estimate harvest losses when using 62-foot harvester header, whereas 12.5- and 17-foot harvester headers requires sampling across the entire harvester header width, with a semi-amplitude of the confidence interval of 20% of the mean for all harvesters.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79536108","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

Economic indicators for cowpea cultivation under different irrigation depths 不同灌溉深度豇豆栽培经济指标研究

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-08-01 DOI: 10.1590/1807-1929/agriambi.v27n8p618-624

Erika de O. T. de Carvalho, D. Costa, Denilson B. da Luz, M. L. Rua, Maria de L. A. Velame, Adrielle C. Monteiro, Igor C. de O. Vieira, J. Pinto, G. S. T. Fernandes, H. Nunes, P. Souza, M. A. S. Santos

{"title":"Economic indicators for cowpea cultivation under different irrigation depths","authors":"Erika de O. T. de Carvalho, D. Costa, Denilson B. da Luz, M. L. Rua, Maria de L. A. Velame, Adrielle C. Monteiro, Igor C. de O. Vieira, J. Pinto, G. S. T. Fernandes, H. Nunes, P. Souza, M. A. S. Santos","doi":"10.1590/1807-1929/agriambi.v27n8p618-624","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n8p618-624","url":null,"abstract":"ABSTRACT Cowpeas are of high socioeconomic importance in the North and Northeast regions of Brazil, whereby the search for alternatives that offer increased productivity with financial returns has become an important challenge. Thus, the objective of this study was to estimate and evaluate the economic indicators of cowpea production in 2015 and 2016 when applying drip irrigation to different depths. Irrigation treatments were based on crop evapotranspiration (ETc). The experiment was laid in a randomized complete blocks design with four treatments (0, 25, 50, and 100% ETc) and six replications. For economic analysis, the results were extrapolated to an area of one hectare. Productivity in 2015 was lower than that in 2016; however, in all treatments, it was always higher when plants were grown under adequate water supply. In both years, the total operating costs were higher under irrigation than under rainfed conditions. The 100% ETc treatment resulted in a greater number of cowpea bags (60 kg) produced and a higher gross revenue than the rainfed treatment by 17 bags ha-1, equivalent to 1,020 kg ha-1 (gross revenue US$ 711.48) and 16 bags ha-1, equivalent to 960 kg ha-1 (gross revenue US$ 867.12), in 2015 and 2016, respectively. Water deficit limited cowpea yield in both years but made cultivation economically unfeasible only in 2015.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86966739","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

Validation of automated measurements of soil tillage variables with laser and ultrasound sensors 用激光和超声波传感器自动测量土壤耕作变量的验证

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-08-01 DOI: 10.1590/1807-1929/agriambi.v27n8p577-584

Gabrielle C. R. de Azevedo, G. G. Zimmermann, S. P. Jasper, R. S. Ferraz, F. G. Moreno, D. Savi

{"title":"Validation of automated measurements of soil tillage variables with laser and ultrasound sensors","authors":"Gabrielle C. R. de Azevedo, G. G. Zimmermann, S. P. Jasper, R. S. Ferraz, F. G. Moreno, D. Savi","doi":"10.1590/1807-1929/agriambi.v27n8p577-584","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n8p577-584","url":null,"abstract":"ABSTRACT The quality of soil tillage can be measured with a specific device called profilometer, which provides information on roughness, mobilized area, blistering, and thickness in disturbed soils. However, it is an outdated device, requiring many hours of field and office work. Thus, the objective of the present work was to develop an electronic profilometer using laser triangulation and ultrasound sensors for measurement of digitally mobilized soil profile. The results obtained were compared to those acquired with a conventional sliding bar profilometer to evaluate the accuracy and efficiency of the sensors. The experiment was conducted in a completely randomized design under a controlled environment. The variables were measured seven times using the three profilometers (laser, ultrasound, and conventional) in the original, elevated, and mobilized soil profiles. The electronic profilometer with ultrasound differed in all the measurements when compared to the conventional profilometer, which differed from the laser sensor only in modified roughness.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88110964","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

Response of semi-arid vegetation to agricultural drought determined by indices derived from MODIS satellite 基于MODIS卫星指数的半干旱植被对农业干旱的响应

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-08-01 DOI: 10.1590/1807-1929/agriambi.v27n8p632-642

S. C. D. Lima, J. M. D. Moraes Neto, Josilene P. Lima, Felipe C. de Lima, L. M. F. Saboya

{"title":"Response of semi-arid vegetation to agricultural drought determined by indices derived from MODIS satellite","authors":"S. C. D. Lima, J. M. D. Moraes Neto, Josilene P. Lima, Felipe C. de Lima, L. M. F. Saboya","doi":"10.1590/1807-1929/agriambi.v27n8p632-642","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n8p632-642","url":null,"abstract":"ABSTRACT Indices based on data from remote sensors play an important role in the characterization, mapping and monitoring of a drought event. Thus, the objective of this study was to monitor the dynamics of agricultural drought, through the response of vegetation, in the semi-arid region that comprises the state of Paraíba, Brazil, through MODIS satellite products applied to the VCI (vegetation condition index), TCI (temperature condition index) and VHI (vegetation health index) indices, and to evaluate the correspondence of VHI index with standardized precipitation index (SPI) and agricultural standardized precipitation index (aSPI). In this study, values of NDVI (normalized difference vegetation index) and LST (land surface temperature) - covering the period between 2010 and 2020 - were used to estimate VCI, TCI and VHI. In addition, the correspondence of VHI with SPI and aSPI was evaluated at the 12-month time scale, conducted using Pearson’s correlation analysis. Characteristics of a stressed vegetation predominated in the study region, due to irregularity of precipitation and high temperatures, confirming the possibility of detection of droughts through VHI, VCI and TCI, and that the indices detected remotely and through local data are strongly correlated in drought detection.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86776804","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

Sweet potato yield and quality as a function of phosphorus fertilization in different soils 不同土壤磷肥对甘薯产量和品质的影响

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-06-01 DOI: 10.1590/1807-1929/agriambi.v27n6p487-495

C. F. D. S. Cordeiro, F. Echer, G. Batista, A. M. Fernandes

{"title":"Sweet potato yield and quality as a function of phosphorus fertilization in different soils","authors":"C. F. D. S. Cordeiro, F. Echer, G. Batista, A. M. Fernandes","doi":"10.1590/1807-1929/agriambi.v27n6p487-495","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n6p487-495","url":null,"abstract":"ABSTRACT Phosphorus (P) is an essential nutrient for growth and yield of sweet potatoes; in sandy soils, sweet potato yield and quality may be limited by application of low P doses, mainly in degraded areas. The objective of this work was to evaluate the effect of P doses on yield and quality of sweet potato root tubers grown in tropical sandy soils with different initial P availabilities: 23.2 mg dm-3 (high P - crop rotation) and 3.7 mg dm-3 (low P - post degraded pasture). Two experiments were carried out in a randomized block design, with four replicates. The treatments consisted of P doses (0, 22, 44, 88, and 176 kg ha-1) applied to the planting bed. Tuber yield, number and mean weight of tubers, P concentration in leaves and tubers, exported P, as well as the percentage of starch, reducing sugars, total sugars, and sucrose in the tubers were evaluated. P concentration in the soil was evaluated at the end of the experiment. In the area with high P availability (> 20 mg dm-3 - resin), increasing P doses did not increase root tuber yield and decreased root starch concentrations. In the area with low P availability (< 3.7 mg dm-3 - resin), root tuber yield and starch concentration peaked when applying 68 and 33 kg ha-1 of P, respectively. In areas after degraded pasture, with low initial soil P concentration, P fertilization for sweet potato crops should be carried out with a P dose of 68 kg ha-1. In areas with crop rotation and adequate soil P concentration, P fertilization should be carried out to replace the amount of P exported by the harvested root tubers to avoid decreases in soil fertility.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"65 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91092556","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

Evaluation of crop water status of melon plants in tropical semi-arid climate using thermal imaging 利用热成像技术评价热带半干旱气候下甜瓜作物水分状况

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-06-01 DOI: 10.1590/1807-1929/agriambi.v27n6p447-456

Márcio F. Aragão, Luis G. Pinheiro Neto, T. V. D. A. Viana, J. Manzano-Juárez, C. Lacerda, James do N. Costa, J. S. Lima, B. M. Azevedo

{"title":"Evaluation of crop water status of melon plants in tropical semi-arid climate using thermal imaging","authors":"Márcio F. Aragão, Luis G. Pinheiro Neto, T. V. D. A. Viana, J. Manzano-Juárez, C. Lacerda, James do N. Costa, J. S. Lima, B. M. Azevedo","doi":"10.1590/1807-1929/agriambi.v27n6p447-456","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n6p447-456","url":null,"abstract":"ABSTRACT The objective of this study was to analyze the feasibility of using thermal images to estimate the water status of melon plants (Cucumis melo L.) in tropical semi-arid climates. The study was conducted in a randomized block design with a split-plot arrangement. The plots comprised of soil cover (with and without mulching), and subplots were constructed using five irrigation regimes (120, 100, 80, 60, and 40% crop evapotranspiration), with five replicates. The following variables were evaluated: canopy temperature (Tcanopy), leaf water potential, air temperature (Tair), soil moisture, crop yield, and thermal index (ΔT), which is defined as the difference between Tcanopy and Tair. ΔT exhibited high correlations with crop yield and water consumption, indicating that thermography is an efficient tool for identifying the water status of melon plants, which could be employed for proper irrigation scheduling under tropical semi-arid scenarios. Moreover, thermal images identified the beneficial effects of soil cover on leaf water status and crop yield, primarily under moderate deficit irrigation. These results demonstrate that mulching is essential for increasing melon yield and water productivity in tropical regions.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90317242","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

Storage potential of African mahogany seeds under different environmental and packaging conditions 非洲红木种子在不同环境和包装条件下的贮藏潜力

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-06-01 DOI: 10.1590/1807-1929/agriambi.v27n6p457-462

Vanessa Romanoski, T. B. Michelon, E. S. N. Vieira, Maristela Panobianco

{"title":"Storage potential of African mahogany seeds under different environmental and packaging conditions","authors":"Vanessa Romanoski, T. B. Michelon, E. S. N. Vieira, Maristela Panobianco","doi":"10.1590/1807-1929/agriambi.v27n6p457-462","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n6p457-462","url":null,"abstract":"ABSTRACT African mahogany (Khaya grandifoliola) is a forest species with excellent wood quality. Due to the increasing demand for viable seeds in forest production programs, the storage capacity of this species must be evaluated. Therefore, this study aimed to determine the appropriate environmental and packaging conditions for the storage of African mahogany seeds. Initially, the water content of the seeds, germination rate, and seedling length were determined in two environments (cold chamber and laboratory), two packages (polyethylene and glass), and three storage periods (72, 144, and 216 d) as well as in additional treatment without storage. The variables analyzed during storage were water content, germination capacity, germination speed index, and seedling length. The experiment was conducted in a completely random design with four repetitions in a split-plot scheme and an additional treatment of 2 × 3 × 2 + 1. African mahogany seeds stored in a cold chamber (6 °C and 72% relative humidity) in a polyethylene packaging maintained their physiological quality for 216 d.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91341463","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 and quality of soil sampling according to a sampling tool 根据采样工具进行土壤采样的效率和质量

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-06-01 DOI: 10.1590/1807-1929/agriambi.v27n6p480-486

J. V. M. Nicoletti, Marcello R. A. Franchi, A. V. A. Motomiya, Wagner R. Motomiya, J. Molin

{"title":"Efficiency and quality of soil sampling according to a sampling tool","authors":"J. V. M. Nicoletti, Marcello R. A. Franchi, A. V. A. Motomiya, Wagner R. Motomiya, J. Molin","doi":"10.1590/1807-1929/agriambi.v27n6p480-486","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n6p480-486","url":null,"abstract":"ABSTRACT Soil sampling is a fundamental stage for recommending agricultural correctives and fertilizers, estimating the nutritional demands of plants, and consequently maximizing productivity. Therefore, this study aimed to assess the performance of three soil samplers in different management systems in terms of sample quality and operational efficiency. A completely randomized experimental design was used in a factorial scheme. Three samplers and two sampling depths (3 × 2) were used with four replicates. At each sampling location, eight single samples were taken at a varying sampling depth of 0.0-0.2 and 0.2-0.4 m, and the collection time was recorded. Samples were analyzed for chemical attributes and granulometry. Statistically significant differences were observed for specific attributes (organic matter, K, Ca, CEC, pH, and S). In terms of operational efficiency, the hydraulic sampler was more efficient than the other samplers, being three times faster than the combustion drill and six times faster than the manual probe. Thus, it is suitable and reliable for soil sampling purposes.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73684458","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

Fruit yield and gas exchange of Tahiti lime at different irrigation depths in the Amazon 亚马逊不同灌溉深度下塔希提石灰的果实产量和气体交换

Revista Brasileira de Engenharia Agrícola e Ambiental Pub Date : 2023-06-01 DOI: 10.1590/1807-1929/agriambi.v27n6p463-471

J. Pinto, D. Costa, Ana P. da S. Costa, M. P. Pires, G. D. S. Rolim, A. M. L. D. Sousa, S. Ortega-Farías, P. Souza

{"title":"Fruit yield and gas exchange of Tahiti lime at different irrigation depths in the Amazon","authors":"J. Pinto, D. Costa, Ana P. da S. Costa, M. P. Pires, G. D. S. Rolim, A. M. L. D. Sousa, S. Ortega-Farías, P. Souza","doi":"10.1590/1807-1929/agriambi.v27n6p463-471","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v27n6p463-471","url":null,"abstract":"ABSTRACT Tahiti lime is a species of great economic importance worldwide. In Brazil, production is concentrated in the states of São Paulo and Pará, where it is usually grafted onto the Rangpur lime. This study aimed to analyze the effects of different irrigation depths on the fruit yield, phenology, and gas exchange of Tahiti lime trees grafted onto Swingle citrumelo. Irrigation was performed during the first year at four different irrigation depths in a random block design with five blocks and four treatments to maintain the soil matric potential in the following ranges: T1: below -50 kPa, T2: from -30 to -50 kPa, T3: from -10 to -30 kPa, and T4: above -10 kPa. The flowering, carbon assimilation rate (A), stomatal conductance (gs), transpiration (E), and fruit yield were measured. Fruits were harvested earlier in the most irrigated treatment, T4, and the yield increased from 2.22 to 6.89 kg per plant from T1 to T4. The average fruit weight escalated from 78.6 to 96.1 g from T1 to T4, and carbon assimilation increased from 6.89 to 9.51 μmol CO2m-2s-1 from T1 to T4.","PeriodicalId":21302,"journal":{"name":"Revista Brasileira de Engenharia Agrícola e Ambiental","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85467342","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