Papers by Andrea De Rossi Rufato
Revista Brasileira De Fruticultura, 2005
The project Integrated Production of Peach (IPP) began in 1999, in four representative areas of p... more The project Integrated Production of Peach (IPP) began in 1999, in four representative areas of peach crop in Rio Grande do Sul (Pelotas, Serra Gaúcha, Grande Porto Alegre and Campanha Region), with the objective to evaluate agronomically the Integrated Production (IP) system compared with conventional production (CP). The present work has been conducted in Pelotas, Rio Grande do Sul, in five harvests periods (1999-2003), and the evaluations were: production, number of fruits per plant, classification based on the officials indexes for the peach industry, in agreement with the categories: CAT I: > 57 mm; CAT II: 47 - 57 mm and CAT III: 44 - 47mm. In the analysis of the mean production/plant, in the IP was 34.65kg, being larger than the one obtained in the area with CP, where the medium production was 28.88kg. In the same way, for the number of fruits/plant the average production in the IP was 372.86 and in CP was 355.64. The average of fruits classified in the category I (more than 57mm) and in the category II (47 57 mm), in the IP system was 57.06% and 40.37%, respectively. In the CP system, in all of the analyzed harvests, the average of fruits in the category I was 37.52% and in the category II was 54.53%. The evaluation of the results showed that the IP system was superior to the CP system, for those parameters, indicating that it is possible to handle the peach orchards according to the Integrated Production.
Revista Brasileira De Fruticultura, 2004
The objective of this experiment was to evaluate the effect of Aldrighi, Flordaguard, Hansen 2168... more The objective of this experiment was to evaluate the effect of Aldrighi, Flordaguard, Hansen 2168, Okinawa, Pavia Moscatel, Tsukuba 1 and Umezeiro rootstocks on behavior of the cultivar Granada in the South of Brazil. The experiment was developed at "Faculdade de Agronomia Eliseu Maciel" of the "Universidade Federal de Pelotas". The parameters evaluated were trunk diameter, foliage size, pruning wood weight, pruning intesity index, full bloom date, bloom period, weight fruits, production per plant, estimed prodcution per hectare, yield efficiency, soluble solid content and fruit firmess. The results showed that vigorous roostocks resulted higher trunk diameter and foliage size and production; the higher production obtained with vigorous rootstock did not affect the weight of fruits. Tsukuba 1 and Okinawa rootstocks will be indicate to peach rootstock in the South of Brazil due to root nematode and behavior in this experiment.
Bragantia, 2007
The experiment was managed in the Didactic Orchard of the Agricultural Center of Palma, which bel... more The experiment was managed in the Didactic Orchard of the Agricultural Center of Palma, which belongs to the Federal University of Pelotas (UFPel). The treatments consisted of 5 different managements of black oat crop cover: incorporation of black oat to soil; chemical management with herbicide; lodging; mowing at 5 cm and control (uncovered soil). The sowing of the oat was accomplished by April of 2002 and the installation of the experiment, by the end of August of the same year. The analyzed variables were percentage of soil moisture at a depth of 15 cm, temperature of the soil at a depth of 5 cm, percentage of organic matter of the soil, soil resistance to the penetration and identification and degree of infestation by weeds. The experiment was managed in randomized blocks, with 3 blocks, 5 treatments and one repetition. The data were submitted to analysis of the variance through F test and the averages compared by Duncan Test. Maintenance of crop covering in orchard propitiated smaller temperature and larger soil moisture; the soil turn-over increased the diversity of weeds and the incorporation of black oat, after 60 days, had the same behavior as the uncovered soil.
Revista Brasileira De Fruticultura, 2009
The objective of this work was to evaluate the effect of different concentrations of indole-butyr... more The objective of this work was to evaluate the effect of different concentrations of indole-butyric acid (0 - control; 500; 1000; 1500 or 2000 mg L-1) on microcuttings rooting of different blueberries species (Southern Highbush 'O'Neal', Vaccinium sp., and the Rabbiteye 'Aliceblue', Vaccinium ashei Reade), associated with the effect of light on the initial phase of the microcuttings rooting (14 days of darkness or natural light). After the treatment with IBA, the microcuttings were put into polystyrene trays which contained as substrate perlite + Plantmax® (1:1) and maintained in greenhouse equipped with an intermittent mist system. In 60 days after the microcutting placement, it was evaluated the percentage of both rooted and surviving microcuttings, roots number, roots length and the percentage of callus formation. Microcuttings of 'O'Neal' and 'Aliceblue' root well without IBA application. The light presence on the initial phase of rooting does not affect the rooting capacity of the microcuttings. The treatment with darkness in the initial rooting phase reduces callus formation, promoting a decrease of microcuttings survival and rooting percentage.
Revista Brasileira De Fruticultura, 2009
The lack of studies on compatibility of pear cultivars and rootstocks is one of the limiting fact... more The lack of studies on compatibility of pear cultivars and rootstocks is one of the limiting factors on the development of the pear crop in Brazil. The use of quinces as rootstocks for pear cultivars has several advantages, among them the reduction in vigor and earlier bearing trees, however, its combination with some scions cultivars results in problems of incompatibility , such as lost of trees of the orchard due to break of the graft union. The objective of this study was to determine the compatibility between pears cvs. Packham's Triumph and Kieffer on the rootstocks Quince Adam's and Quince C. The evaluated variables were: the section of trunk diameter at the graft union, and 5cm above and 5cm under the graft union; the diameter difference between scion and rootstock; plant height; volume and dry mass of canopy and roots. Moreover, it was observed the vascular connection of the graft union by immersion of the base of the plants (under the graft union) in a 0.08% Fuccinic acid solution. It was observed that the pear cv. Packham's Triumph is compatible with the Quince rootstocks cvs. Adams and Quince C, whereas the pear cv. Kieffer had morphological incompatibility symptoms with the Quince cvs Adams and Quince C.
Scientia Agricola, 2008
Traceability is becoming the most effective method to provide a safer food chain and connection p... more Traceability is becoming the most effective method to provide a safer food chain and connection producers to consumers. This paper report the application and validation of a traceability system on the production chain of peaches, according the rules for Integrated Production of Peach (IP) and a Hazard Analysis and Critical Control Point (HACCP) systems. The harvesting plots were discriminated using a Global Positioning System (GPS) device. The horticultural practices were registered in a field book according to the Brazilian IP rules. Boxes to transport the fruit, from the orchard on, were barcode labelled to identify the fruits in terms of origin (orchard and harvesting plot), cultivar, quality, picking date and time. Arriving in the factory, by an optical barcode reading device, the fruits in the boxes were assigned to homogeneous batches. Peach cans were labelled according to their corresponding batch number and monitored based on physical and chemical analysis as preconized by the IP rules and HACCP system. An electronic data base was set up and placed over the Internet. Using the batch number, the history of each peaches can could be traceable back to their harvesting plot. Therefore, manufacturers can monitor the product at any time and take any necessary action, such as product recall and/or product reprocessing.
Revista Brasileira De Fruticultura, 2009
A species that is being introduced in the plantations of small fruits is the cape-gooseberry. The... more A species that is being introduced in the plantations of small fruits is the cape-gooseberry. The Solanaceae is considered a rugged plant that is difficult to maintain its upright stems; its fruits are in a glass that protects against insects, birds, and adverse conditions. This objective of this work was to evaluate the physicochemical characteristics of Physalis peruviana fruits according to different sepal colors and the used training systems. The fruits were harvested and classified in five different sepal color groups: 1 (green), 2 (green-yellowish), 3 (yellow-greenish), 4 (yellow), 5 (yellow-brownish); and two training system groups: inverted "v" and triangular. The experimental design was completely randomized in a factorial scheme 5x2 (sepal colors x drive systems). The experimental unit was composed of ten fruits, with each treatment repeated three times. The data were submitted to variance analysis (ANOVA) by applying the Tukey test at a 5% level of probability of error for the comparison of the means. The appraised variables were: fruit, sepals and total fresh mass, diameter, firmness, epidermis color, total soluble solids (TSS), total titratable acidity (TTA), the TSS/TTA ratio and pH. The triangular training system associated with yellow and yellowbrownish sepals resulted, respectively, in fruits with more SST and better TSS/TTA ratio. The highest mass and diameter values were obtained in cape-gooseberry fruits with yellow-brownish sepals, while the highest total mass was reached when sepals had yellow color. For sepals mass, the largest responses were obtained with the green sepals. From this physicochemical characterization we can conclude that cape-gooseberry picked g from the third color phase (yellow-greenish) present the best physiochemical characteristics in both assessed training systems.
Revista Brasileira De Fruticultura, 2009
Obtaining a compact orchard, with less vigorous plants and high production, constitutes a strong ... more Obtaining a compact orchard, with less vigorous plants and high production, constitutes a strong tendency in the current horticulture, aiming the raise of the productivity. One of the techniques for reducing vigor is the interstem. This study was developed in a commercial orchard of Randon Agro Silvo Pastoril S.A. (RASIP), located in Rio Grande do Sul State, Brazil. The purpose of this work was to evaluate the vegetative and productive development of apple trees cv. Imperial Gala with different lengths of EM-9 interstem. The treatments consisted of five interstem lengths: 10, 15, 20, 25, 30 cm. The following parameters were evaluated, in the seventh and eighth year of implantation: the sectional area of the Imperial Gala 5 cm above the second graft point; height of the plant; the tree-head size; fertility index; the number of fruits per plant; estimated productivity and productive efficiency. The use of interstem EM-9 of 30 cm in the rootstock Marubakaido is the most indicated for vigor control of Imperial Gala apple trees, provides greater productive efficiency and produces bigger fruits.
Revista Brasileira De Fruticultura, 2007
The use of the crop covers in Brazilian peach orchards is still not so spread, though there are s... more The use of the crop covers in Brazilian peach orchards is still not so spread, though there are several species of crop covers with the potential have the effect studied. This research presents the effects of the five plant species use for winter vegetal crop covers: Avena strigosa, Lathyrus sativus, Pisum sativum subesp. arvense, Raphanus sativus var. oleiferus, Lupinus angustifolius, four combinations among these species and the control treatments (native vegetation), with spontaneous vegetationon the vegetative development of "Maciel" peach tree under Capdeboscq rootstock. All of the crop covers evaluated adapted themselves to the soil and climate conditions of the south of "Rio Grande do Sul'. The crop covers, except the Raphanus sativus var. oleiferus, increased positively the phenological and vegetative development of peach trees; the Lupinus angustifolius also increased the phenological and vegetative development of plants.
Uploads
Papers by Andrea De Rossi Rufato