Tecnico Agricola

Campinas, Brazil

Tecnico Agricola

Campinas, Brazil
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Vicente M.R.,IFNMG Campus Salinas | Mantovani E.C.,Federal University of Viçosa | Fernandes A.L.T.,UNIUBE FAZU Coordenador do Nucleo de Cafeicultura Irrigada CBPD Cafe | Vieira G.H.S.,Doutorando em Engineering Agricola DEA UFV | And 2 more authors.
Coffee Science | Year: 2011

This study aimed to evaluate the uniformity of 27 irrigation systems with 7 as drip and 20 as central pivot, located in 12 properties distributed in three counties of western Bahia. Of the 20 central pivot irrigation systems evaluated, 11 were equipped with sprinklers such as "Low Energy Precision Application" (LEPA), five with alternative sprinklers and four conventional sprinklers. We determined the Christiansen Uniformity Coefficient (CUC) and the coefficient uniformity of distribution (CUD) of each system. Of the central pivots evaluated, only two (10%) had CUC values below 80%, which is considered unsuitable. Of the seven drip irrigation systems evaluated, only one showed an unacceptable CUD value. The average value of CUD found during the evaluations, for the central pivot irrigation system with sprinklers equipped with LEPA was higher than the value given by drip. The central pivots with localized application (LEPA and alternative) had higher values of uniformity than the conventional central pivots.

Bernardi O.,University of Sao Paulo | Garcia M.S.,Federal University of Pelotas | e Silva E.J.E.,Federal University of Pelotas | Zazycki L.C.F.,Federal University of Pelotas | And 2 more authors.
Ciencia Florestal | Year: 2011

The objective of this research was to collect, to study and to characterize the fauna of lepidopterous associated with Eucalyptus spp., plantation in the Municipality of Pinheiro Machado, in RS state. In the period of October 2005 to October 2007, every 15 days, collections of insects were accomplished with three light traps. After selection and transfixion procedures, the lepidopterous were identified based on entomological collections and specialized literature. Two thousand and twenty individuals belonging to 14 families, 106 genera and 220 species were collected. The families with the highest number of species collected were: Noctuidae (59), Geometridae (30), Arctiidae (28) and Saturniidae (14). According to the fauna classification the most species were considered not dominant, uncommon, rare and accidental. Among the species identified, there were some whose larvae are defoliators of the eucalypts: Oxydia agliata, (Geometridae), Sarsina violascens (Lymantriidae), Automeris illustris, Eacles imperialis magnifica and Lonomia obliqua (Saturniidae), which needs to have their populations monitored.

Bernardi O.,University of Sao Paulo | Garcia M.S.,Federal University of Pelotas | Ely e Silva E.J.,Federal University of Pelotas | Zazycki L.C.F.,Federal University of Pelotas | And 3 more authors.
Ciencia Florestal | Year: 2011

The objective of this study was to collect, identify and carry out a faunistic characterization of Cerambycidae occurring in a forest of Eucalyptus spp., on São Manoel farm, in the municipality of Pinheiro Machado, RS. In the period from February 2006 to October 2007, collections of insects were performed every 15 days, with three ethanol traps. After selection procedures, the Cerambycidae were identified based on entomological collections and specialized literature. There were collected 692 insects, distributed among 29 genera and 40 species. The most abundant species were Acanthoderes jaspidea, Chlorida costata, Compsocerus barbicornis, Eburodacrys sp., Eurysthea hirta, Neoclytus curvatus and Nyssodrysina lignaria, which represented 81.17% of the total individuals. Cerambycidae were collected during practically the entire sampling period, but the largest number at a single collection occurred in the month of December. Several species demonstrate potential for damaging Eucalyptus spp., of which Neoclytus curvatus deserves the most attention, because it represented almost half of the insects collected.

Bernardi O.,University of Sao Paulo | Garcia M.S.,Federal University of Pelotas | e Silva E.J.E.,Federal University of Pelotas | Zazycki L.C.F.,University of Sao Paulo | And 4 more authors.
Ciencia Florestal | Year: 2010

The objective of this study was to collect, identify and study population fluctuation of Coleoptera species in a forest of Eucalyptus spp., on a farm in the municipality of Pinheiro Machado, Rio Grande do Sul State. Insects were collected with light traps and ethanol traps, once every fifteen days, in the period of February 2006 to October 2007. The insects, after selection procedures, were identified based on entomological collections and specialized literature. A total of 6172 individuals were collected and distributed among 40 families and 249 species, of which 130 were identified at the species level and 119 at the family level, representing 4498 and 1674 of total individuals collected, respectively. Cyclocephala sp. 1, Cyclocephala sp. 2, Dyscinetus sp. 1, Euetheola humilis (Scarabaeidae) and Neoclytus curvatus (Cerambycidae) were the most abundant species, representing 49.28% of the individuals identified in genus and/or species. Scarabaeidae presented the highest number of individuals (2588), distributed in 37 species. The families Cerambycidae (47) and Scolytidae (40) presented the largest number of species. Individuals of Coleoptera were trapped at all collections but the largest number of individuals was trapped in December 2006 and March 2007.

Radunz L.L.,UFFS | Mossi A.J.,UFFS | Zakrzevski C.A.,URI Integrated Regional University Brazil | do Amaral A.S.,URI Integrated Regional University Brazil | Grassmann L.,Tecnico Agricola
Revista Brasileira de Engenharia Agricola e Ambiental | Year: 2010

The aim of this work was to study the drying of sage at different air temperatures and to fit the experimental data with different mathematical models. The experiments were carried out using 6 tray dryers, for the temperatures of 40, 50, 60, 70, 80 and 90 °C. A randomized experimental design, with three replications, using 800 g of fresh leaves in each tray, was used. For the fitting of mathematical models to the experimental data the non-linear regression by the Quasi-Newton method was used. The values of the parameters of the models were estimated in terms of drying air temperature using the software Statistica 6.0®. The results showed that small increments in drying air temperature of drying results in a significant reduction in the drying time; the model of Henderson and Pabis (1961) modified model and the Midilli et al. model (2002) were adequate to describe the drying of sage in the temperature range of 40 to 90 °C; and the model of approximation of diffusion and the two terms model were adequate to describe the kinetics of drying in the range of temperature from 60 to 90 °C.

Francisco M.S.,Federal University of Paraiba | Araujo R.C.,Federal University of Paraiba | Dos Santos E.P.,Federal University of Paraiba | Gomes F.F.B.,Tecnico Agricola | Da Cruz G.R.B.,Federal University of Paraiba
Revista Brasileira de Fruticultura | Year: 2014

The effect of four management conditions on the acceptance of ‘Pacovan’ banana was assessed. The fruits were harvested at ideal physiological maturity for storage in four farms in the municipality of Bananeiras - PB, according to a fully randomized design. Treatments were identified as P1: Irrigation + chemical and organic fertilization + chemical control of weeds; P2: manual control of weeds; P3: irrigation + chemical fertilization + manual control of weeds; P4: manual and chemical control of weeds. Five bunches of bananas were harvested in each farm and submitted to cooling with calcium carbide for 12 hours for uniform ripening. After this period, fruits were kept at room temperature until full maturation. The sensory panel was composed of 62 untrained judges, with mean age of 18 years. Attributes of aroma, flavor, texture and pulp color were assessed through acceptance test using a 9-point hedonic scale. The purchase intention test used a 5-point structured scale. The samples were presented to panelists in the form of slices with thickness of approximately 1.5 cm. Results were submitted to analysis of variance (ANOVA) and means were compared by the Tukey test at 5% probability. For all attributes, values ranged from 7.34 to 7.68, in the hedonic scale between terms ‘liked moderately’ and ‘liked very much’. As for the purchase intention, acceptance percentages were 74.19, 72.58, 72.58 and 70.97% respectively for P1, P2, P3 and P4. The management condition did not influence the acceptance of ‘Pacovan’ banana, and the fruits were considered by the judges as a product of good acceptance. © 2014, Sociedade Brasileira de Fruticultura. All rights reserved.

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