Programa de Pós-Graduação em Agronomia
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Navegando Programa de Pós-Graduação em Agronomia por Autor "Abi-Saab, Otavio Jorge Grígoli"
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- DissertaçãoAcesso aberto (Open Access)Ambiente protegido: uma alternativa de cobertura com material reciclável(Universidade Estadual do Norte do Paraná, 2016-03-30) Fernandes, Flávia Regina Moreira; Reis, Luiz Carlos; https://orcid.org/0000-0003-2193-8535; http://lattes.cnpq.br/4310404758664835; Reis, Teresinha Esteves da Silveira; https://orcid.org/0000-0001-6379-4790; http://lattes.cnpq.br/5705088234641018; Reis; Reis, Luiz Carlos; https://orcid.org/0000-0003-2193-8535; http://lattes.cnpq.br/4310404758664835; Tashima, Hatiro; https://orcid.org/0009-0008-8757-4600; http://lattes.cnpq.br/0514640010249563; Ralisch, Ricardo; https://orcid.org/0000-0003-4982-2112; http://lattes.cnpq.br/3620197655490764; Oliveira, Rone Batista de; https://orcid.org/0000-0002-3071-4827; http://lattes.cnpq.br/2379804514613050; Abi-Saab, Otavio Jorge Grígoli; https://orcid.org/0000-0002-1757-636X; http://lattes.cnpq.br/8437035647330384Cultivation on a protected environment generates microclimate changes favorable to the development of vegetables, which has become very common in the past few years among homelike farmers due to the increased productivity in small areas. Given the great influence of different spectral characteristics in plant development, this research was conducted in order to evaluate the physical parameters of coverage in a protected environment with recyclable materials (PET - polyethylene terephthalate) compared to the coverage with low density polyethylene (PEBD) regarding the indicated climate conditions given to the vegetables cultivation. The experiment was carried out from July 27 to August 26, 2015 on the Campus of Universidade Estadual do Norte do Paraná, Bandeirantes, PR. The protected environments contained dimensions of 2x3 m, 2.5 m in the right foot of eucalyptus and fall of 20%, surrounded with anti-aphids mesh and with plastic film in the skirt with 60 cm high, coverage with green bottle PET roof, coverage with transparent bottle PET, coverage with PEBD of 100µm with and without diffuser, installed in the East/West direction. The experimental design was a factorial 4 x 3 (four environments x three schedules) + external environment for the collection of data regarding the air temperature and relative humidity maximum air, medium and minimum and factorial 4 x 2 (four environments x two schedules) for data from the exposure time for the solar radiation reading, luminance and photosynthetically active radiation (PAR), in which it was studied the interactions of the factors by the analysis of variance and the means of the protected environments and for schedules compared by the F test at 5% of probability. In the protected environment A2 (coverage with green PET bottle) was registered the highest maximum and minimum internal temperature maximum in relation to the external environment. In the protected environment A2 (coverage with green PET bottle) was recorded a reduction of PAR and brightness compared to other treatments. The protected environment A4 (coverage with 100 µm without diffuser) presented less exposure time to read the solar radiation performed automatically by the spectroradiometer. The sources of variation: “protected environments” and “schedules” showed a significant interaction in the time of exposure to solar radiation reading. There was a significant reduction in the photosynthetically active radiation input (PAR) and light compared to the external environment in which the protected environment A2 recorded lower incidence of PAR and brightness compared to other treatments. A4 protected environment occurred less exposure time to read the solar radiation and interaction between sources of variation environments protected and the data acquisition time. The A2 environment showed a higher number of emerged seeds and emergency speed index, differing from the other treatments, which is the environment that provided better physical parameters for the smooth lettuce seed cultivation.
- DissertaçãoAcesso aberto (Open Access)Cobertura do solo na deriva e no depósito de pulverizações sobre alvos artificiais(Universidade Estadual do Norte do Paraná, 2014-08-05) Medeiros, Flaviane Marcolin de; Gandolfo, Marco Antonio; https://orcid.org/0000-0003-2314-3752; http://lattes.cnpq.br/5560552732033631; Gandolfo, Marco Antonio; https://orcid.org/0000-0003-2314-3752; http://lattes.cnpq.br/5560552732033631; Oliveira, Rone Batista de; https://orcid.org/0000-0002-3071-4827; http://lattes.cnpq.br/2379804514613050; Abi-Saab, Otavio Jorge Grígoli; https://orcid.org/0000-0002-1757-636X; http://lattes.cnpq.br/8437035647330384; Rodrigues, Euripedes Bomfim; https://orcid.org/0000-0001-6531-878X; http://lattes.cnpq.br/9720688699522760; Ralisch, Ricardo; https://orcid.org/0000-0003-4982-2112; http://lattes.cnpq.br/3620197655490764The plant protection products are products to control pests, diseases and weeds and should be used with technology that allows its deposition in the desired location with minimal loss to the environment. Its use has intensified in recent years due to increased demand for food production, in the same idea the use of mulch as soil conservation practice soil and water. The aim of this study was to quantify the drift in the wind tunnel and the tank simulator agricultural sprays on soil with and without mulch. The experimental design was completely randomized subjected to analysis of variance and the treatment means by the Confidence Interval and the Tukey’s test (P<0.5). The drift was to evaluate in the wind tunnel with two wind speeds and the tank simulator spray two velocities (1 and 2 m s-1). These combined the two types of ground cover (with and without mulch) speeds totaling four treatments with four replications. The spray nozzles were used AXI 11002 at 414 kPa and the all were mixed up with a food color dye Blue FDC for spectrophotometry analysis of deposits. The results showed that the increase of wind speed in the tunnel have more pronounced effects on the drift in soil without mulch compared with soil covered. The increased speed of the spray affect the sediments on artificial collectors. The deposits collected are affected by the presence of straw on the soil surface. The longitudinal or transverse layout of artificial collectors relative to the spray bar produces no differences in the deposits collected.
- DissertaçãoAcesso aberto (Open Access)Cobertura e deposição da aplicação em relação a direção da semeadura e estágio de desenvolvimento da soja(Universidade Estadual do Norte do Paraná, 2021-05-03) Cunha, Waldyr Armando Benitez; Gandolfo, Marco Antônio; https://orcid.org/0000-0003-2314-3752; http://lattes.cnpq.br/5560552732033631; Oliveira, Rone Batista de; https://orcid.org/0000-0002-3071-4827; http://lattes.cnpq.br/2379804514613050; Souto, Ana Carolina; http://lattes.cnpq.br/4909756168282078; Abi-Saab, Otavio Jorge Grígoli; https://orcid.org/0000-0002-1757-636X; http://lattes.cnpq.br/8437035647330384In the search for greater operational capacity and operational ease, different directions of displacement in the sprayer in soybean culture have been carried out, but without evidence whether these decisions affect the quality of the application or not. Therefore, this work aimed to evaluate the effect on the quality of the application of different directions of displacement of the sprayer in relation to the sowing lines of the soybean crop in different phenological stages. The tests were conducted through field and laboratory research. As soon as the soybean plants reached the desired development stages of V4/V6, R3/R4, R1/R2, R1/R3, R4/R5, R6/R7 (field), and V3/V4 and R3/R4 (laboratory), applications were made. For laboratory application, a CO₂ pressurized sprayer was used, equipped with 6 spray tips spaced 0.5 m apart and at a height of 0.5 m above the highest surface of the plants, and carried out in the directions of 0°, 45° and 90°. For field application, a tractor of the Agrale 4100® brand was used, equipped with a 7-meter spray bar, spaced 0.5 m apart and at a height of 0.5 m above the plants, carried out in the directions of 0° and 90°. For both applications, a syrup containing water + bright blue marker at a concentration of 6 g L⁻¹ was prepared. The quality of the application was assessed using the marker deposit (volume/area) analyzed by spectrophotometry and coverage (%) evaluated at the top, median and bottom of the soybean plants. Coverage and deposit ratio was performed in the upper and lower thirds depending on the direction of application. The results indicate that the coverage and deposit ratio show greater variability as the development stage and leaf area index increase. The 45° application direction showed greater application homogeneity. It is concluded that the directions of spraying did not influence the deposit and coverage of the vegetative stages, however as the development stage increased, higher values and greater dispersion were found for reproductive stages.
- DissertaçãoAcesso aberto (Open Access)Espalhamento e tempo de evaporação de gotas pulverizadas em folhas de tomateiro sob condições controladas de temperatura e umidade relativa do ar(Universidade Estadual do Norte do Paraná, 2015-11-26) Campli, Carolina Marques de; Oliveira, Rone Batista de; https://orcid.org/0000-0002-3071-4827; http://lattes.cnpq.br/2379804514613050; Torres, João Pereira; https://orcid.org/0000-0002-7306-9872; http://lattes.cnpq.br/2582950118304206; Rodrigues, Euripedes Bomfim; https://orcid.org/0000-0001-6531-878X; http://lattes.cnpq.br/9720688699522760; Torres, João Pereira; https://orcid.org/0000-0002-7306-9872; http://lattes.cnpq.br/2582950118304206; Bueno, João Tavares; https://orcid.org/0000-0003-0716-1141; http://lattes.cnpq.br/2889380559858950; Abi-Saab, Otavio Jorge Grígoli; https://orcid.org/0000-0002-1757-636X; http://lattes.cnpq.br/8437035647330384Environmental conditions during phytosanitary products application on foliar surfaces can be a determining factor in evaporation physical processes and drip watering areas. The objective of this work was to evaluate the effect of temperature and the air relative humidity on the watering area and drops evaporation time after being deposited on the tomato plant leaves with different phytosanitary products in juices prepared with or without adjuvants. Calibrated drops with 1000 µm of diameter were deposited on the adaxial surface of tomato plant leaves and monitored up to evaporation under two environmental conditions (31 °C and 35 UR e 25 °C and 75 UR). Evaporation time was determined by the interval between drop deposition and its extinction. Products used for juice preparation were the following: CabrioTop®(2 g L-1), Kumulus®DF (2 g L-1), Nomolt®150 (0,250 ml L-1), Pirate®(0,250 ml L-1), Nimbus®(5,0 ml L-1), Li700®(1,5 ml L-1), CalSuper®(25 ml L-1), BoroSuper®(3,5 ml L-1) and FoliFósforo® (7,5 ml L-1). Products Cabrio Top®, Kumulus®DF, Nomolt®150 and Pirate® were tested alone (with distilled water) and a specific blend (CabrioTop®, Kumulus®DF, Nomolt®150, Pirate®, CalSuper®, and BoroSuper® FoliFósforo®), often it used by producers and tomato in greenhouse Bandeirantes-PR region. To assess drops spreading and evaporation on the surface, a system was developed to simulate different environmental conditions. The systems consists of a temperature and relative humidity control unit, a drops generator which generates drops similar to those used in agricultural field spraying (200 - 1000 µm) and a stestoscope equipped with a high definition camera to capture sequential images. In juices without adjuvants, the drip watering area increases at 31°C and 35% RH and evaporation time decreases. In general, the combination of products and environmental conditions affect the drip watering area. The tested mix brought significant improvement to the drip watering area in relation to most tested products. In juices with adjuvants, drops evaporation time was reduced at high temperatures and low air relative hunidity for most juices. Adjuvants action on the watering area and drops evaporation time depends on the product to which they were added.
- DissertaçãoAcesso aberto (Open Access)Pontas de pulverização e taxas de aplicação de herbicida em pré-emergência para controle de Ipomoea grandifolia(Universidade Estadual do Norte do Paraná, 2018-06-18) Mertens, Tatiane Beatriz; Gandolfo, Marco Antônio; https://orcid.org/0000-0003-2314-3752; http://lattes.cnpq.br/5560552732033631; Gandolfo, Marco Antônio; https://orcid.org/0000-0003-2314-3752; http://lattes.cnpq.br/5560552732033631; Antuniassi, Ulisses Rocha; http://lattes.cnpq.br/9754851029548502; Tashima, Hatiro; https://orcid.org/0009-0008-8757-4600; http://lattes.cnpq.br/0514640010249563; Abi-Saab, Otavio Jorge Grígoli; https://orcid.org/0000-0002-1757-636X; http://lattes.cnpq.br/8437035647330384; Rodrigues, Euripedes Bomfim; https://orcid.org/0000-0001-6531-878X; http://lattes.cnpq.br/9720688699522760The objective of the present study was to evaluate different spraying tips and herbicide application rates in pre-emergence to control Ipomoea grandifolia. The experimental design was completely randomized, with four replications, in the factorial scheme (5 x 3) + 1, totaling 15 treatments and one control. The factors were constituted of 5 application rates (50, 75, 100, 150 and 200 L ha-1), 3 spray tips (TT 11001, AVI 11001 and TVI 80050), besides the control that received no application. The spray syrup was prepared in 5 containers, consisting of water, Front® herbicide (diuron + hexazinone + sulfometuron-methyl) and FD&C-5 Yellow marker. The yellow marker at the dose of 6 g L-1 was first weighed on a digital semi-analytical balance after the Front® herbicide at the dose of 2.0 kg ha-1, following the commercial recommendation according to the texture of the ground. In each vessel were weighed 10 liters of water and in a plastic bucket were weighed another 5 liters of water with an electronic digital scale, the water from the plastic bucket was used to dilute the marker Yellow and after the herbicide Front®. After completion of the preparation of the spray syrup, the syrup was kept under constant stirring by returning the pump to the reservoir in order to maintain homogenization of the syrup. Spraying was carried out 60 minutes after sowing I. grandifolia by a spraying simulator of 15 m in length, with hydraulic system composed of a manual pressure controller and hydraulic pump of three pistons, moved by an electric motor of 1.5 kW, equipped with a three-meter spray bar and three spray tips, spaced 0.5 m apart from each other and 0.5 m above the top of the vessels. After the spraying, the percentage of coverage was evaluated, evaluating all replicates in each treatment. Control and counting evaluations were performed at 15, 30, 45 and 60 days after application (DAA). For the control evaluation was adopted the scale of grades from 0 to 100%, where 0 represents the absence of control and 100 the death of all plants. The evaluation of plant count was performed from the count of the number of plants present in each pot. With the results obtained in this work, it is evident the possibility of reducing the rate of application in the weed control in sugarcane cultivation in greenhouse, however, other field trials can prove this possibility. The higher rates of application promoted the highest levels of coverage. Reduction of the application rate with the herbicide Front® did not generate a loss of efficiency in the control of I. grandifolia up to 60 DAA in greenhouse. The spray tip TVI 80050 showed the lowest coverage percentage. There was no significant difference between the spray tips for the control and number of I. grandifolia plants.
- DissertaçãoAcesso aberto (Open Access)Técnicas de aplicação de produtos fitossanitários no tomateiro em ambiente protegido(Universidade Estadual do Norte do Paraná, 2018-02-28) Dario, Gustavo; Oliveira, Rone Batista de; https://orcid.org/0000-0002-3071-4827; http://lattes.cnpq.br/2379804514613050; Oliveira, Rone Batista de; https://orcid.org/0000-0002-3071-4827; http://lattes.cnpq.br/2379804514613050; Abi-Saab, Otavio Jorge Grígoli; https://orcid.org/0000-0002-1757-636X; http://lattes.cnpq.br/8437035647330384; Osipe, Jethro Barros; http://lattes.cnpq.br/9692340257207288; Gandolfo, Marco Antônio; https://orcid.org/0000-0003-2314-3752; http://lattes.cnpq.br/5560552732033631; Rodrigues, Euripedes Bomfim; https://orcid.org/0000-0001-6531-878X; http://lattes.cnpq.br/9720688699522760One of the main economic losses in sheep farming is gastrointestinal nematode infections. The indiscriminate use of chemicals to control these parasites has contributed to the appearance of anthelmintic resistance in several countries including Brazil. Studies carried out with the objective of controlling the parasites and reducing the impacts of resistance have related several tannins plants with anthelmintic properties, especially Musa spp. The banana tree (Musa spp.) is widely distributed mainly in countries with a tropical climate; its cultivation focused on food purposes due to its nutritional value. The present study aimed to evaluate the anthelminthic action of the hydroalcoholic extract of the floral bud of the banana tree (HEB) to 10% in eggs and larvae of gastrointestinal nematodes of sheep, as well as its antioxidant activity. Samples of naturally infected sheep were used with a minimum egg count of 2,000 eggs per gram of feces (EPG), and egg hatchability tests (EHT) and larval migration inhibition test (LMIT) were performed. In addition, total polyphenols, condensed tannins, flavonoids, and antioxidant activity of the extract were determined. Five concentrations of HEB (20; 40; 80; 160 and 320 mg mL-1), negative control with distilled water (NC) and positive control with Albendazole Sulfide (PC) were tested in quadruplicate. In relation to EHT, HEB inhibited 82.57% in the concentration of 160 mg mL-1, reaching 100% in the concentration of 320 mg mL-1. In relation to LMIT, HEB inhibited 90.30% in the concentration 80 mg mL-1, 94.80% in the concentration of 160 mg mL-1, reaching 100% in the concentration of 320 mg mL-1. The HEB (10 mg mL-1) presented 0.38 mg EAG g-1 of total polyphenols, 372.70 mg EAT g-1 of tannins, 0.42 mg RE g-1 of flavonoids, and antioxidant activity of 43.03% with IC50 corresponding to 0.2765 mg mL-1. The activity of the extract could be related to the phenolic compounds present in the extracts, specifically condensed tannins. Thus, it was possible to verify the anthelmintic and antioxidant activity of the HEB, demonstrating its potential in the control of verminosis in sheep. In addition, these results are of great importance for organic, agroecological and biodynamic production systems, whose use of synthetic parasiticides is not allowed.
- DissertaçãoAcesso aberto (Open Access)Test bench para coleta de deriva em condições de clima subtropical(Universidade Estadual do Norte do Paraná, 2019-02-22) Precipito, Laís Maria Bonadio; Oliveira, Rone Batista de; https://orcid.org/0000-0002-3071-4827; http://lattes.cnpq.br/2379804514613050; Oliveira, Rone Batista de; https://orcid.org/0000-0002-3071-4827; http://lattes.cnpq.br/2379804514613050; Gandolfo, Marco Antônio; https://orcid.org/0000-0003-2314-3752; http://lattes.cnpq.br/5560552732033631; Lima, Julião Soares de Souza; https://orcid.org/0000-0002-8178-3937; http://lattes.cnpq.br/4456536143814608; Osipe, Jethro Barros; http://lattes.cnpq.br/9692340257207288; Abi-Saab, Otavio Jorge Grígoli; https://orcid.org/0000-0002-1757-636X; http://lattes.cnpq.br/8437035647330384An alternative method to ISO 22866 for measuring field drift was developed by the University of Turin (DEIAFA), referred to as the bench test. This methodology is faster and simpler to reproduce for evaluating drift under field conditions, and can be performed even under unstable wind conditions when compared to ISO 22866. The aim of this research was to quantify drift potential using the bench‑test methodology under subtropical climate conditions, using three spray nozzles, at two working pressures and two spray boom heights. The study was conducted in a completely randomised design comprising 12 treatments resulting from the combination of 3 nozzles, 2 pressures and 2 boom heights, with four replicates, totalling 48 tests. The nozzles used were XR 11002 (100 and 400 kPa), AIXR 11002 (100 and 600 kPa) and ATR 2.0 hollow cone (400 and 2000 kPa), evaluated at two boom heights: 0.50 m and 1.00 m above the test bench. During the tests, agrometeorological conditions — wind speed and direction, air temperature and relative humidity — were recorded continuously at three‑second intervals at a height of 2.0 m above ground level. The bench‑test approach proved to be a viable methodology for evaluating drift potential under field conditions in a subtropical region, demonstrating that variations in agrometeorological conditions, nozzle type and operating pressure are decisive factors influencing drift from boom sprayers. Relative air humidity and working pressure were the most influential factors determining drift potential for the ATR 2.0, XR 11002 and AIXR 11002 nozzles, whereas changing boom height from 0.50 m to 1.00 m had no significant effect on the amount of drift collected.
- DissertaçãoAcesso aberto (Open Access)Velocidade do pulverizador na variabilidade espacial dos movimentos da barra de aplicação e deposição de calda(Universidade Estadual do Norte do Paraná, 2015) Gimenes, Gustavo Rodrigues; Oliveira, Rone Batista de; https://orcid.org/0000-0002-3071-4827; http://lattes.cnpq.br/2379804514613050; Oliveira, Rone Batista de; https://orcid.org/0000-0002-3071-4827; http://lattes.cnpq.br/2379804514613050; Abi-Saab, Otavio Jorge Grígoli; https://orcid.org/0000-0002-1757-636X; http://lattes.cnpq.br/8437035647330384; Reis, Luiz Carlos; https://orcid.org/0000-0003-2193-8535; http://lattes.cnpq.br/4310404758664835; Gandolfo, Marco Antônio; https://orcid.org/0000-0003-2314-3752; http://lattes.cnpq.br/5560552732033631; Reis, Teresinha Esteves da Silveira; https://orcid.org/0000-0001-6379-4790; http://lattes.cnpq.br/5705088234641018Operational parameters, such as the travel speed of the tractor/sprayer set and physical characteristics of the area, such as relief irregularities, may influence spray boom oscillation and spray deposition, affecting application quality. In this study, the spatial variability of relief, vertical boom movements of a sprayer operating at two travel speeds, and the effect on the spatial variability of spray deposition were evaluated. Elevation data for construction of the digital terrain model (DTM) were obtained using a total station, and boom movement was assessed via digital videography. To determine deposition, the bright blue marker FDC‑1 (0.6%, m v⁻¹) was added to the spray tank, and its absorbance was measured by spectrophotometry. Descriptive statistics, spatial analysis (geostatistics), and GIS techniques were applied for data analysis. The results indicate spatial dependence in deposition between the two speeds (1.725 m s⁻¹ and 2.736 m s⁻¹), with increased deposition at the higher speed, while elevation did not influence deposition at either speed.