Revista Brasileira de Engenharia Agricola e Ambiental最新文献_第4页

Flower abortion and yield of processing tomato according to irrigation depths 不同灌溉深度加工番茄的花败育及产量

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2021-06-01 DOI: 10.1590/1807-1929/AGRIAMBI.V25N6P415-421

C. M. D. Silva, J. A. Frizzone, Luiz F. M. da Silva, Y. A. D. O. Santos, A. Golynski, N. Pontes

引用次数: 0

Phosphorus doses alter the ionic homeostasis of cowpea irrigated with saline water 磷剂量改变了盐水灌溉豇豆的离子稳态

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2021-06-01 DOI: 10.1590/1807-1929/AGRIAMBI.V25N6P372-379

F. Sá, Ivan D. F. Silva, M. Ferreira Neto, Yuri Bezerra de Lima, E. Paiva, H. Gheyi

引用次数: 3

Cherry tomato production and seed vigor under irrigation with saline effluent from fish farming 鱼养殖含盐废水灌溉下的樱桃番茄产量和种子活力

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2021-06-01 DOI: 10.1590/1807-1929/AGRIAMBI.V25N6P380-385

A. D. Silva, Simara S. Melo, B. Umbelino, F. Sá, N. S. Dias, M. Ferreira Neto

{"title":"Cherry tomato production and seed vigor under irrigation with saline effluent from fish farming","authors":"A. D. Silva, Simara S. Melo, B. Umbelino, F. Sá, N. S. Dias, M. Ferreira Neto","doi":"10.1590/1807-1929/AGRIAMBI.V25N6P380-385","DOIUrl":"https://doi.org/10.1590/1807-1929/AGRIAMBI.V25N6P380-385","url":null,"abstract":"This study aimed to evaluate the effect of irrigation with saline effluent from fish farming in different phenological stages on fruit production and seed vigor of cherry tomato. The experiment was conducted in a greenhouse in Mossoró, RN, Brazil, using a completely randomized design with 10 treatments, which consisted of the use of fish farming effluent with electrical conductivity (EC) of 4.54 dS m-1 and public-supply water with EC of 0.54 dS m-1, alternated during four phenological stages (growth from 1 to 19 days after transplantation (DAT), flowering from 20 to 31 DAT, fruit filling from 32 to 60 DAT and maturation from 61 to 77 DAT). Application of saline effluent from fish farming throughout a phenological stage of cherry tomato does not reduce fruit production per bunch, but reduces seed production and the vigor of the seeds produced. The use of saline effluent from fish farming in the initial and maturation stages, and the use of effluent with two successive applications, alternated with irrigation with low salinity water, are favorable for the production of cherry tomato seeds with satisfactory vigor. Alternated application of saline effluent from fish farming, with two subsequent successive irrigations with low-salinity water, despite reducing seed production, favors the production of seeds with high vigor. The use of saline effluent from fish farming in the flowering and fruiting stages reduces seed production and the vigor of the seeds produced.","PeriodicalId":51288,"journal":{"name":"Revista Brasileira de Engenharia Agricola e Ambiental","volume":"38 1","pages":"380-385"},"PeriodicalIF":1.2,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85248608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Allometric relationship and leaf area modeling estimation on chia by non-destructive method 奇亚异速生长关系及叶面积无损建模估算

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2021-05-01 DOI: 10.1590/1807-1929/AGRIAMBI.V25N5P305-311

P. Goergen, I. Lago, N. T. Schwab, A. F. Alves, C. P. D. O. Freitas, Verlaine S. Selli

{"title":"Allometric relationship and leaf area modeling estimation on chia by non-destructive method","authors":"P. Goergen, I. Lago, N. T. Schwab, A. F. Alves, C. P. D. O. Freitas, Verlaine S. Selli","doi":"10.1590/1807-1929/AGRIAMBI.V25N5P305-311","DOIUrl":"https://doi.org/10.1590/1807-1929/AGRIAMBI.V25N5P305-311","url":null,"abstract":"This study aimed to obtain equations to estimate leaf area from linear leaf dimensions and establish the allometric relationship between leaf area and the number of leaves on the main stem of chia (Salvia hispanica L.) at different sowing times. The experiment was conducted in the agricultural year 2016/2017 on five sowing times in Santa Maria, RS, Brazil, in a randomized block design with four repetitions. In each plot, ten random plants were marked weekly during the vegetative phase to determine the number of leaves (NL) in the main stem, and three of these for the determination of leaf area (LA). A total of 70 leaves of different sizes were used to calibrate the model. Another 106 leaves were used to test the predictive capacity of the equations by various statistical indices. The length (L) and the largest leaf width (W) were measured. Leaf collection was carried out during the cycle, in all sowing times to represent all leaf sizes. The linear, quadratic, exponential, and potential models were adjusted. The non-destructive method, through the linear dimensions of the leaf, is appropriate for estimating the leaf area in chia. The general equation LA = 0.642 (L x W) can be used to estimate the leaf area of the chia plants without loss of precision. The potential model is appropriate to characterize the allometric relationship between leaf area evolution and the number of leaves accumulated in the main stem of chia at different sowing times.","PeriodicalId":51288,"journal":{"name":"Revista Brasileira de Engenharia Agricola e Ambiental","volume":"22 1","pages":"305-311"},"PeriodicalIF":1.2,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77116701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Equipment to assess vigor in soybean seeds using CO2 produced during respiration 利用呼吸过程中产生的二氧化碳来评估大豆种子活力的设备

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2021-05-01 DOI: 10.1590/1807-1929/AGRIAMBI.V25N5P353-358

J. G. Silva, G. I. Gadotti, D. M. Moraes, Augusto H. M. Silva, J. A. Cavalcante, G. Meneghello

{"title":"Equipment to assess vigor in soybean seeds using CO2 produced during respiration","authors":"J. G. Silva, G. I. Gadotti, D. M. Moraes, Augusto H. M. Silva, J. A. Cavalcante, G. Meneghello","doi":"10.1590/1807-1929/AGRIAMBI.V25N5P353-358","DOIUrl":"https://doi.org/10.1590/1807-1929/AGRIAMBI.V25N5P353-358","url":null,"abstract":"The adoption of quick and reliable laboratory techniques and equipment to choose the best seed lots for marketing will influence the production of soybeans with superior physiological quality, among other areas in the sector. Therefore, the objective of this study was to evaluate the CO2 concentrations produced by water-soaked soybean seeds and to verify the effectiveness of new equipment to help choose lots with different vigor levels. To evaluate the physical and physiological quality of the seeds, eight soybean lots were evaluated with the following tests: water content, weight of thousand seeds, first germination count, germination, electrical conductivity, emergence, and respiration evaluated by the Pettenkoffer apparatus and with equipment designed to measure CO2 in seeds. The results were subjected to analysis of variance with means compared by Tukey’s test at p ≤ 0.05. Conventional methods showed significant differences in vigor and viability in soybean seeds. The equipment designed was efficient in detecting CO2 produced by seeds soaked in water for 8 hours. The CO2 readings with the equipment presented satisfactory results to predict the vigor in soybean seeds through respiration.","PeriodicalId":51288,"journal":{"name":"Revista Brasileira de Engenharia Agricola e Ambiental","volume":"42 2 1","pages":"353-358"},"PeriodicalIF":1.2,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90475692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Management of trickle irrigation for banana: Hydrodynamic processes and sensor placement at the root zone 香蕉滴灌的管理:水动力过程和根区传感器的放置

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2021-05-01 DOI: 10.1590/1807-1929/AGRIAMBI.V25N5P312-318

Edvaldo B. Santana Júnior, E. F. Coelho, M. R. D. Santos, A. Silva, J. Reis, B. L. D. S. Pereira

{"title":"Management of trickle irrigation for banana: Hydrodynamic processes and sensor placement at the root zone","authors":"Edvaldo B. Santana Júnior, E. F. Coelho, M. R. D. Santos, A. Silva, J. Reis, B. L. D. S. Pereira","doi":"10.1590/1807-1929/AGRIAMBI.V25N5P312-318","DOIUrl":"https://doi.org/10.1590/1807-1929/AGRIAMBI.V25N5P312-318","url":null,"abstract":"Information on soil hydrodynamic processes assists in explaining the soil-water-plant relationship and has practical applications to irrigation management, such as the definition of soil water sensor placement. The objective of this study was to detail the hydrodynamic process in the soil root zone and to define the location for placement of soil water sensor under different configurations of trickle irrigation in banana crops. Three microsprinkler emitters with flow rates of 70 (T1), 53 (T2), 35 L h-1 (T3), and two drip system, one with one drip line per row of plants (T4), and another with two drip lines per row of plants (T5) were evaluated. The experiment was conducted in a randomized block design with five repetitions. Higher water extraction was found for irrigation systems with higher flow rates for all configurations of trickle irrigation systems. Soil moisture sensors in drip systems should be placed at distances of 0.75 to 0.81 m from the pseudo stem and at depths of 0.33 to 0.44 m. Under micro-sprinkler systems, soil water sensors should be placed at 0.75, 0.77 and 0.83 m from the pseudo stem towards to the emitter and at depths of 0.33, 0.48 and 0.55 m for emitter flow rates of 35, 53 and 70 L h-1, respectively.","PeriodicalId":51288,"journal":{"name":"Revista Brasileira de Engenharia Agricola e Ambiental","volume":"359 1","pages":"312-318"},"PeriodicalIF":1.2,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78955985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Efficiency of nitrogen use by wheat depending on genotype and previous crop 小麦氮素利用效率取决于基因型和前代作物

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2021-04-01 DOI: 10.1590/1807-1929/AGRIAMBI.V25N4P235-242

A. R. Kraisig, J. G. D. Silva, L. M. Pereira, R. Carbonera, I. Carvalho, N. Basso

{"title":"Efficiency of nitrogen use by wheat depending on genotype and previous crop","authors":"A. R. Kraisig, J. G. D. Silva, L. M. Pereira, R. Carbonera, I. Carvalho, N. Basso","doi":"10.1590/1807-1929/AGRIAMBI.V25N4P235-242","DOIUrl":"https://doi.org/10.1590/1807-1929/AGRIAMBI.V25N4P235-242","url":null,"abstract":"The efficiency of nitrogen use by wheat crop depends on genetic and environmental stimuli. The aim of this study was to evaluate the efficiency of nitrogen use by wheat crop, through biomass, productivity and grain quality indicators, as a function of the genotype and previous harvest, in Southern Brazil cereal cultivation systems. The experiments were conducted in soybean/wheat and maize/wheat systems during 2015, 2016, and 2017 in Augusto Pestana, RS, Brazil. The experimental design was a randomized block with four repetitions, following a 5 × 4 factorial scheme, referring to five wheat cultivars (Quartzo, TBIO Sinuelo, TBIO Sintonia, TEC 10 and TEC Vigore) and four nitrogen doses (0, 60, 120 and 180 kg ha-1) applied as a topdressing during the phenological stage of the expanded third leaf, stage 13. There were genetic differences in nitrogen use efficiency, for the productivity (yield and biomass) and quality of wheat. However, these genetic differences were influenced by the carbon:nitrogen ratios of the previous crop. Quartzo and TBIO Sinuelo had the greatest nitrogen use efficiency for grain yield, TBIO Sinuelo had the greatest nitrogen use efficiency for biomass production and Quartzo had the greatest nitrogen use efficiency for grain quality with expectation of 3 Mg ha-1, regardless of the succession system, in the joint analysis of agricultural years.","PeriodicalId":51288,"journal":{"name":"Revista Brasileira de Engenharia Agricola e Ambiental","volume":"61 1","pages":"235-242"},"PeriodicalIF":1.2,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83029460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Design of a smart LED lamp to monitor insect populations in an integrated pest management approach 一种智能LED灯的设计，用于害虫综合管理方法中的昆虫种群监测

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2021-04-01 DOI: 10.1590/1807-1929/AGRIAMBI.V25N4P270-276

M. Carvalho, E. Hickel, Bruno Bertoldi, G. Knabben, Y. R. D. Novaes

{"title":"Design of a smart LED lamp to monitor insect populations in an integrated pest management approach","authors":"M. Carvalho, E. Hickel, Bruno Bertoldi, G. Knabben, Y. R. D. Novaes","doi":"10.1590/1807-1929/AGRIAMBI.V25N4P270-276","DOIUrl":"https://doi.org/10.1590/1807-1929/AGRIAMBI.V25N4P270-276","url":null,"abstract":"This study aimed to present the design and field test results of an LED (light emitting diode) lamp for integrated pest management (IPM) and other entomological studies. The light spectrum of the LEDs was tuned to optimize insect attraction and lower energy consumption. An electronic circuit with control software was integrated with the lamp, enabling it to operate in standalone mode, automatically identify night and day, monitor and control the battery charge with energy from a photovoltaic solar panel, protect the battery against over-discharge, and provide feedback about the operating status of the system. Additionally, energy consumption is about five times lower than that of the fluorescent lamp, reducing the battery and solar panel size needed for its energy supply. In the 2017/2018 growing season, the smart LED lamp was installed in a Sonne light trap in an irrigated rice field, and the total number of insects captured was compared with the number collected in a conventional light trap fitted with a traditional 15 W black light fluorescent lamp. Total captures in the Sonne trap were approximately three times greater than in the conventional system.","PeriodicalId":51288,"journal":{"name":"Revista Brasileira de Engenharia Agricola e Ambiental","volume":"14 1","pages":"270-276"},"PeriodicalIF":1.2,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88502247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Soil fertility and yield of ‘Paluma’ guava fertilized with phosphorus, cattle manure, and boron 施用磷、牛粪和硼的“帕鲁马”番石榴的土壤肥力和产量

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2021-04-01 DOI: 10.1590/1807-1929/AGRIAMBI.V25N4P228-234

G. P. Santos, W. E. Pereira, R. D. L. S. D. Lima, J. F. D. Brito Neto, B. O. Dias, T. J. Dias

{"title":"Soil fertility and yield of ‘Paluma’ guava fertilized with phosphorus, cattle manure, and boron","authors":"G. P. Santos, W. E. Pereira, R. D. L. S. D. Lima, J. F. D. Brito Neto, B. O. Dias, T. J. Dias","doi":"10.1590/1807-1929/AGRIAMBI.V25N4P228-234","DOIUrl":"https://doi.org/10.1590/1807-1929/AGRIAMBI.V25N4P228-234","url":null,"abstract":"ABSTRACT The low soil fertility associated with the lack of adequate irrigation management are factors that most limit crop production. Therefore, the study aimed to evaluate the chemical attributes of an Oxisol and the yield of ‘Paluma’ guava under irrigation with saline water and fertilized with phosphorus, cattle manure, and boron. The treatments were distributed in randomized blocks, with four repetitions and two plants per plot, including borders on the sides of the useful experimental area, arranged in a factorial scheme (5 × 2) + 1, referring to five phosphorus doses (0, 0.08, 0.16, 0.24 and 0.32 kg of P2O5 plant-1), two doses of cattle manure, 0 and 30 kg per plant and an additional treatment consisting of 0.16 kg of P2O5 plus 30 kg of cattle manure and 1.0 g of boron, using as source the borax. In the soil, pH, phosphorus, potassium, calcium, magnesium, and the cation exchange capacity were evaluated in the 0-20 cm and 20-40 cm layers. In plants, the average yield per hectare in two harvests was estimated. The pH decreased with phosphorus doses without cattle manure and in the treatment with boron in the 20-40 cm layer. The cation exchange capacity increased with the application of phosphorus doses associated with manure and decreased in both soil layers with boron. The macronutrients evaluated were not influenced by boron. Phosphorus doses associated with cattle manure increased yield, exceeding the average of 50 t ha-1 year-1 determined for ‘Paluma’ guava. In contrast, boron did not increased the yield.","PeriodicalId":51288,"journal":{"name":"Revista Brasileira de Engenharia Agricola e Ambiental","volume":"1 1","pages":"228-234"},"PeriodicalIF":1.2,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89294942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Sensor system for acquisition of vegetation indexes 植被指数采集传感器系统

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2021-04-01 DOI: 10.1590/1807-1929/AGRIAMBI.V25N4P264-269

Thales M. de A. Silva, D. Valente, F. Pinto, D. M. Queiroz, N. T. Santos

{"title":"Sensor system for acquisition of vegetation indexes","authors":"Thales M. de A. Silva, D. Valente, F. Pinto, D. M. Queiroz, N. T. Santos","doi":"10.1590/1807-1929/AGRIAMBI.V25N4P264-269","DOIUrl":"https://doi.org/10.1590/1807-1929/AGRIAMBI.V25N4P264-269","url":null,"abstract":"ABSTRACT Vegetation indexes are important indicators of the health and yield of agricultural crops. Among the sensors used to evaluate vegetation indexes, proximal sensors can be used for real-time decision-making. Thus, the objective of this study was to develop a proximal sensor system based on phototransistors to acquire and store the following vegetation indexes: normalized difference vegetation index, simple ratio, wide dynamic range vegetation index, soil-adjusted vegetation index, and optimized soil-adjusted vegetation index. The sensor system was developed using an analog circuit to acquire reflectance data from red and near-infrared bands. The sensor system was calibrated according to the results of a spectroradiometer, using Zoysia japonica grass as the target. An algorithm that calculates and stores vegetation indexes in a file was developed. The Pearson correlation between the vegetation indexes obtained with the sensor system and the spectroradiometer was evaluated. The vegetation indexes presented a Pearson correlation higher than 0.92 to the estimated values by the spectroradiometer. Under the evaluation conditions, the proposed sensor system could be used to determine all vegetation indexes evaluated.","PeriodicalId":51288,"journal":{"name":"Revista Brasileira de Engenharia Agricola e Ambiental","volume":"64 1","pages":"264-269"},"PeriodicalIF":1.2,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80590656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2