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Gestão de resíduos da arborização urbana; Management of residues of the urban arborization

Meira, Ana Maria de
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 11/03/2010 PT
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36.54%
A falta de modelos eficientes para a gestão dos resíduos da arborização urbana tem contribuído para agravar os problemas ambientais, sociais e econômicos resultantes da disposição inadequada desses materiais. Por suas características, esses materiais apresentam potencial para serem aproveitados em pequenos objetos de madeira (POM), composto orgânico, lenha, carvão vegetal, entre outros. Este estudo teve por objetivo quantificar, caracterizar e elaborar um modelo de gestão para os resíduos da arborização urbana, utilizando como estudo de caso a cidade de Piracicaba - SP. Para quantificação realizou-se o acompanhamento da poda de 10 espécies de maior freqüência na arborização: espirradeira (Nerium oleander L); ficus-benjamim (Ficus benjamina L); ipê (Tabebuia sp).; canelinha (Nectandra megapotamica (Spreng.) Mez); oiti (Licania tomentosa Benth.); chapéu de sol (Terminalia catappa L).; quaresmeira (Tibouchina granulosa Cogn.); resedá (Lagerstroemia indica); falsochorão (Schinus molle L).; sibipiruna (Caesalpinia peltophoroides), com medições de CAP, área de copa, altura, intensidade de poda, motivo da poda e foram pesados os resíduos conforme a classe diamétrica (0 a 8 cm; 8,1 a 15 cm; 15,1 a 25 cm e acima de 25 cm). Foram testados modelos empíricos para predição de biomassa de resíduos - Spurr...

Uso da poda seca e da poda verde para obtenção de duas safras por ciclo vegetativo em três cultivares de videira; Use of winter pruning and green pruning for obtaining two harvests by vegetative cicle of three vine cultivars

Anzanello, Rafael; Souza, Paulo Vitor Dutra de; Coelho, Pedro Ferreira
Fonte: Universidade Federal do Rio Grande do Sul Publicador: Universidade Federal do Rio Grande do Sul
Tipo: Artigo de Revista Científica Formato: application/pdf
POR
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46.53%
Foram avaliadas épocas de poda seca e de poda verde visando ao alcance de duas safras por ciclo vegetativo nas videiras ‘Niagara Branca’, ‘Niagara Rosada’ e ‘Concord’, cultivadas em sistema de espaldeira. O experimento foi realizado na Estação Experimental da UFRGS, em Eldorado do Sul - RS, na safra de 2007/2008. As plantas foram submetidas aos seguintes tratamentos: T1 (poda seca em 20-07-07 e poda verde em 15-11-07); T2 (poda seca em 20-07-07 e poda verde em 17-12-07); T3 (poda seca em 22- 08-07 e poda verde em 15-11-07), e T4 (poda seca em 22-08-07 e poda verde em 17-12-07), sendo a poda de inverno feita em cordão esporonado, e a poda verde, mediante desponte do sarmento a partir da quarta gema acima do último cacho. Avaliaram-se a produção por planta, a massa dos cachos, os sólidos solúveis totais (SST), a acidez total titulável (ATT), a relação SST/ATT, o potencial da água na folha e a relação folha:fruto, de ambas as safras. Os resultados demonstraram que a execução de uma poda seca associada a uma poda verde permitiu obter duas safras de uva por ciclo vegetativo em ‘Niagara Branca’, Niagara Rosada e ‘Concord’, sendo mais efi ciente quando a poda seca foi realizada em agosto, associada à poda verde em novembro. A ‘Niagara Branca’ apresentou maior potencial para produzir uma segunda colheita...

Comparison of Pruning Regimes for Stone Pine (Pinus pinea L.) Using a Functional- Structural Plant Model

Surový, Peter; Yoshimoto, Atsushi; Almeida Ribeiro, Nuno
Fonte: Japan Society of Forest Planning Press Publicador: Japan Society of Forest Planning Press
Tipo: Artigo de Revista Científica
POR
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36.3%
Functional-Structural Plant Models (FSPM) are becoming important tools for modeling the structure and growth of plants, including complex organisms like trees. These models combine the advantages of empirical, mechanistic, and structural models to simulate the growth of individual plant structures (branches, buds, leaves, etc.). This approach enables realistic evaluation of the plant’s response– including changes in structure and growth to different environmental conditions. We demonstrate the potential use of these models to evaluate individual tree growth under different management regimes (pruning). The data used in this study was obtained from 3-D measurements taken with a FASTRAK Polhemus digitizer, with specific attention given to bud creation and branching. Each branch segment was analyzed to estimate its age, enabling us to document annual structural changes. We use the XL programming language and a GroIMP environment to simulate and compare different pruning scenarios.

Cabernet Sauvignon grapevine grafted onto rootstocks during the autumn-winter season in southeastern Brazilian

Souza,Claudia Rita de; Mota,Renata Vieira da; França,Daniela Vieira Cardozo; Pimentel,Rodrigo Meirelles de Azevedo; Regina,Murillo de Albuquerque
Fonte: São Paulo - Escola Superior de Agricultura "Luiz de Queiroz" Publicador: São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/02/2015 EN
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36.32%
The change of grape (Vitis vinifera) harvest from summer to winter through double pruning management has improved the fine wine quality in southern Brazil. High altitude, late cultivar and grafting combination all need to be investigated to optimize this new viticulture management. For this purpose, this study was carried out during the 2011 and 2012 growing seasons in a high altitude region of the state of Minas Gerais, Brazil, using eight grafting combinations for five year old Cabernet Sauvignon vines. The stem water potential, photosynthetic rate and stomatal conductance were not affected by rootstock type. The rootstocks IAC 766 and 101-14 induced, respectively, the highest and lowest vegetative vigor in Cabernet Sauvignon, as shown by leaf area and pruning weight. In the 2011 growing season, the leaf chlorophyll contents were increased in IAC 766, whereas vines grafted onto 101-14 accumulated more leaf starch, probably due to reduced vegetative and reproductive growth. In general, rootstocks K5BB, 1045P, SO4 and IAC 766 had the highest yield as compared to 1103P and 101-14. Berries from the grapevine with the highest yield did not differ in pH, total soluble solids and acidity. The rootstocks did not influence the anthocyanins and total phenols in both growing seasons. Quality parameters were better in the 2011 than in the 2012 growing season due to better climatic conditions...

Flowering and vegetative growth of olive tree submitted to pruning and paclobutrazol application

Cruz,Maria C. M.; Oliveira,Adelson F.; Oliveira,Dili L.; V. Neto,João
Fonte: Brazilian Journal of Plant Physiology Publicador: Brazilian Journal of Plant Physiology
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2011 EN
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This work focuses on the evaluation of flowering and vegetative growth of olive tree submitted to pruning and paclobutrazol application under field conditions with low temperatures during the winter. Two-years-old olive plant variety Grappolo 575, were submitted to light pruning, removing apical dominance, before treatments application. The treatments were organized in a 4×2 factorial scheme, respective to four PBZ concentrations tested: 0, 200, 400 and 800 mg L-1 of PBZ and two plants groups, with and without pruning, in randomized block with four replications. Paclobutrazol concentrations tested did not affect the olive tree flowering. The plant vegetative growth was reduced until 60 days after paclobutrazol application. Pruning resulted in stimulation of emission of vegetative shoots and reduction of flowering.

Pruning cycles and nitrogen fertilization of coffee feilds conducted in the "safra zero" system.

JAPIASSÚ, L. B.; GARCIA, A. L. A.; GUIMARÃES, R. J.; PADILHA, L.; CARVALHO, C. H. S. de
Fonte: Coffee Science, Lavras, v. 4, n. 1, p. , jan/jun. 2009. Publicador: Coffee Science, Lavras, v. 4, n. 1, p. , jan/jun. 2009.
Tipo: Artigo em periódico indexado (ALICE)
EN
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Modern, competitive and cost effective coffee production requires plants with high productivity that are more adapted to mechanical and manual harvesting. ?Safra Zero? is a cultivation system designed to limit plant height and eliminate the need for expensive harvesting during years of low productivity, which usually follow years of high productivity. This system is based on pruning cycles, nitrogen fertilization and different management methods. To evaluate the ?Safra Zero? system, the following experiments were conducted in coffee fields (Coffea arabica L.) at the Procafé/MAPA Experimental Station, in Varginha, Minas Gerais state: i) Evaluation of different pruning cycles in short plants; ii) Evaluation of different pruning cycles in tall plants. Rejuvenation pruning, in which all the primary branches were cut-back severely (parrot-perching), was done in alternate years, every four years, to evaluate mean productivity. iii) Evaluation of the pruning management every two years, associated with the application of different nitrogen doses (0, 200 and 400 kg.ha-1.year-1). The different pruning cycles did not result in yield gain, compared to the control plants (without pruning). The use of different nitrogen levels after pruning, in a coffee field grown on soils with high organic matter content and traditionally fertilized with 350 kg of N per hectare per year...

Pruning cycles and nitrogen fertilization of coffee fields conducted in the "safra zero" system.

JAPIASSÚ, L. B.; GARCIA, A. L. A.; GUIMARÃES, R. J.; PADILHA, L.; CARVALHO, C. H. S. de
Fonte: Coffee Science, Lavras, v. 4, n. 1, p. , jan/jun. 2009. Publicador: Coffee Science, Lavras, v. 4, n. 1, p. , jan/jun. 2009.
Tipo: Artigo em periódico indexado (ALICE)
EN
Relevância na Pesquisa
46.62%
Modern, competitive and cost effective coffee production requires plants with high productivity that are more adapted to mechanical and manual harvesting. ?Safra Zero? is a cultivation system designed to limit plant height and eliminate the need for expensive harvesting during years of low productivity, which usually follow years of high productivity. This system is based on pruning cycles, nitrogen fertilization and different management methods. To evaluate the ?Safra Zero? system, the following experiments were conducted in coffee fields (Coffea arabica L.) at the Procafé/MAPA Experimental Station, in Varginha, Minas Gerais state: i) Evaluation of different pruning cycles in short plants; ii) Evaluation of different pruning cycles in tall plants. Rejuvenation pruning, in which all the primary branches were cut-back severely (parrot-perching), was done in alternate years, every four years, to evaluate mean productivity. iii) Evaluation of the pruning management every two years, associated with the application of different nitrogen doses (0, 200 and 400 kg.ha-1.year-1). The different pruning cycles did not result in yield gain, compared to the control plants (without pruning). The use of different nitrogen levels after pruning, in a coffee field grown on soils with high organic matter content and traditionally fertilized with 350 kg of N per hectare per year...

Época e técnica de poda verde de pessegueiro na obtenção dos frutos de qualidade

Dotto, Marcelo
Fonte: Pato Branco Publicador: Pato Branco
Tipo: Dissertação de Mestrado
POR
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36.53%
One of the aspects that it should be considered in the fresh fruit market peach is the fruit quality. The visual aspect is the most important factor, it being the skin color relevant because it is associated with the fruit maturation and flavor. One of cultural techniques to improve the fruit quality is summer pruning, which has as main purpose to increase light penetration within the canopy tree and consequently it to promote the pigmentation, as well as improvements in the fruit flavor. However, this technique can to present results variable according to the time and manner in which it was realized. The aim of this work was evaluate the time and management type for summer pruning to obtain peach quality. The work was carried out at commercial orchard from Dois Vizinhos city, Paraná State, Brazil, in 2009/2010, 2010/2011 and 2011/2012 cycle. It was used Charme and Maciel peach varieties. The experimental design was completely randomized, in factorial 3. x 3 (summer pruning time x summer pruning management type), with 4 replications of two plants by plot. The summer pruning time were in the third, fourth and fifth week before harvest. First the cultural practices were realized removal vigorous vertical shoot inside and in the base of crown...

Rootstock performance and bud development evaluation to optimize Vitis vinifera production

Dias, Frederico Alcântara Novelli
Fonte: Programa de Pós-Graduação em Agronomia/Fitotecnia; UFLA; brasil; Departamento de Agricultura Publicador: Programa de Pós-Graduação em Agronomia/Fitotecnia; UFLA; brasil; Departamento de Agricultura
Tipo: Tese de Doutorado
Publicado em 21/08/2015 ENG
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36.5%
Wine grapes are constrained to a narrow climatic range and consequently are especially sensitive to climate change, with potential effects on yield, quality and profitability. Researches to increase knowledge about reproductive development and new agriculture practices, and opening of new wine making areas are important to overcome climates limitations. In Brazilian southeast, a new management approach called double pruning allows the change of wine grape harvest season from wet summer to dry winter. Thus, the present thesis had as issue evaluation of different rootstocks on grapevine Syrah performance and wine quality in Brazilian southeast; and the validation of a new grapevine model, called Microvine, to winter bud development studies. A competition of ten rootstocks under Syrah was developed during two seasons in south of Minas Gerais state, Brazil. Rupestris du Lot and IAC 766 induced the highest pruning weight, while R110 and 161-49C showed the lowest vegetative development. The average yield per plant of two seasons identified Rupestris du Lot, IAC 766, 1045P and Kober 5BB as the most productive rootstocks. The more vigorous rootstocks did not affect negatively grape quality of Syrah under double pruning management. Syrah’ wine from productivity and vigorous rootstocks...

Avalia????o das Vari??veis Meteorol??gicas e do Manejo sobre a Qualidade e Produtividade de videiras cultivadas sob base familiar em Pelotas/RS; Evaluation of meteorological variables and Management on the Quality and Productivity of vines grown under family base in Pelotas

RAD??NZ, Andr?? Luiz
Fonte: Universidade Federal de Pelotas; Agricultura familiar; Programa de P??s-Gradua????o em Sistemas de Produ????o Agr??cola Familiar; UFPel; BR Publicador: Universidade Federal de Pelotas; Agricultura familiar; Programa de P??s-Gradua????o em Sistemas de Produ????o Agr??cola Familiar; UFPel; BR
Tipo: Dissertação Formato: application/pdf
POR
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36.45%
In order to reach the strengthening and the development of family agriculture as well as the premise of diversification of the productive sources, there appears as an alternative the cultivation of common vineyards destined to the production of home-grown wine, juices and derivatives. Attempts were made to evaluate the existing relationships among local meteorological variables and handling practices, dry pruning and green pruning and the effects on phenological behavior, productive aspects and on the quality of the cultivated grape under the conditions of the region of Pelotas/RS. For this purpose, a family based agricultural property was selected located in the 8TH district of Pelotas/RS, in which the experiment was carried out and where the experimental delineation was composed for a (2 x 2 x 2) factorial, these being: (Bord?? and BRS Violeta) cultivar, period of dry pruning (normal and late) and green pruning (with and without defoliation). Evaluations were carried out during harvest of total soluble solids, of the mass of clusters, of the number of clusters of grapes per cluster and production per plant. Moreover, global solar radiation was measured in each treatment, reflected by the canopy and available at the level of clusters as well as the daily temperature of the vineyards...

Aspectos fisiológicos de videiras sob o manejo da duplapoda no Sul de Minas Gerais; Physiological aspects of vines in the management of double-pruning on Minas Gerais South

Gonçalves, Daynara Aparecida Rodrigues
Fonte: Universidade Federal de Lavras; Programa de Pós-Graduação em Agronomia/Fisiologia Vegetal; UFLA; brasil; Departamento de Biologia Publicador: Universidade Federal de Lavras; Programa de Pós-Graduação em Agronomia/Fisiologia Vegetal; UFLA; brasil; Departamento de Biologia
Tipo: Dissertação
Publicado em 17/11/2015 POR
Relevância na Pesquisa
46.51%
The cultivation of fine grapes for the production of wine in subtropical and tropical regions has been increasing in Brazil. The biggest management obstacle is related to the high temperatures and the excessive rainfall at harvesting, negatively impacting the wine quality. The cultivation in Southern Minas Gerais State has proven to be possible and allowed the production of fine wines by managing the harvest with a double-pruning procedure, shifting the harvest to late fall when the rainfall decreases and the temperature amplitude increases. Thus, the study aimed at evaluating the physiological and phenological behavior of three varieties of Vitis vinifera, Syrah, Cabernet Sauvignon, and Sauvignon Blanc under double-pruning management grown in the municipality of Três Pontas, Southern Minas Gerais State. The plants have been evaluated with respect to the Phenology, Growth, Leaf Area, Gas Exchange, NDVI, Chlorophyll, and Total Soluble Sugar throughout the production cycle. It was observed that the variety Sauvignon Blanc completed its cycle in 159 days, while the other ones required approximately 200 days to complete their cycle. The variety Syrah had thicker trunk and longer arms as well as larger leaf area throughout the production cycle...

Integrated irrigation and canopy management strategies for Vitis vinifera CV. Shiraz

Ashley, Rachel Margaret
Fonte: Universidade de Adelaide Publicador: Universidade de Adelaide
Tipo: Tese de Doutorado Formato: 3416674 bytes; 342803 bytes; application/pdf; application/pdf
Publicado em //2004 EN
Relevância na Pesquisa
36.63%
Modern canopy management practices and irrigation strategies have improved the economic and environmental sustainability of Australia ' s wine industry, in terms of increased production and improved wine quality for minimal production cost and environmental impact. This study tested the hypothesis that partial rootzone drying ( PRD ) integrated with low input, minimal pruning practices can improve sustainability of winegrape production in warm - climate, irrigated vineyards. The bi - factorial experiment investigated three conventional pruning practices; hand spur pruning ( SPUR ), mechanical hedging ( MECH ) and minimal pruning ( MIN ) integrated with standard drip ( SD ) and PRD irrigation strategies. The sustainability of winegrape production of field - grown cv. Shiraz grapevines was determined by examining yield, fruit composition, wine composition and quality, vine physiology and susceptibility of bunches to Botrytis bunch rot. Winegrape production was strongly influenced by pruning level and the resultant bunch number per vine. Increased node retention at pruning of minimal pruned vines resulted in 4 - fold more bunches per vine than spur pruned vines. Mechanical hedged vines had an intermediate number of bunches per vine. Yield generally reflected the trend in bunch number per vine. However...

Aspectos de manejo e cultivares de mirtilo: qualidade e produtividade; Management aspects and blueberry cultivars: quality and productivity

MOURA, Gisely Corrêa de
Fonte: Universidade Federal de Pelotas; Agronomia; Programa de Pós-Graduação em Agronomia; UFPel; BR Publicador: Universidade Federal de Pelotas; Agronomia; Programa de Pós-Graduação em Agronomia; UFPel; BR
Tipo: Tese de Doutorado Formato: application/pdf
POR
Relevância na Pesquisa
36.32%
The objective of this study was to evaluate the growth, production and fruit quality of blueberry under different plant management. The parameters evaluated in Southern Brasil, were: nitrogen and sulfur dosages and pruning intensity. It was also corrield out a cultivar test to choose, the ones with better fruit quality in environmental conditions of Turin, northern Italy. Four experiments were conducted to reach the objectives: (1) the nitrogen influence, using ammonium sulfate (NH4)2SO4 with 21% N2 and 23% sulfur as a nitrogen source, (2) influence of sulfur dosages (in grams per m3 of pots), (3) evaluation of intensity of pruning, and (4) evaluation of cultivars Aurora, Berkeley, Bluecrop, Bonifacy, Brigittablue, Draper, Duke, Emerald, group 'Northen highbush', and Gulfcoast, Jewel, Legacy, Liberty, Millenia, Misty, The ' Neal, Ozarkblue, Palmetto, Primadonna, Sebring, Snowchaser, SouthernBelle, Springhigh, Springwide, Star Group 'southern highbush'. The last experiment was conducted in Torino, Italy, during the 2011/2012 growth season. In all experiments the variables analyzed were production and fruit quality, achieved through physical and chemical analysis, and the presence of phytochemicals in fruits. In the first two experiments...

Comportamento produtivo e fisiológico de três cultivares de videira submetidas a duas safras por ciclo vegetativo pelo manejo da poda; Productive and physiology aspects of three vine cultivars submitted to two harvests per vegetative cycle based of pruning management

Anzanello, Rafael
Fonte: Universidade Federal do Rio Grande do Sul Publicador: Universidade Federal do Rio Grande do Sul
Tipo: Dissertação Formato: application/pdf
POR
Relevância na Pesquisa
36.64%
Foram avaliadas épocas de poda de inverno (PI) e de poda verde (PV) para antecipar a primeira safra e obter uma segunda safra de uva nas cultivares de Vitis labrusca Niágara Branca, Niágara Rosada e Concord, conduzidas no sistema de espaldeira. O experimento foi realizado na Estação Experimental da UFRGS em Eldorado do Sul - RS, na safra 2007/2008. As plantas foram submetidas aos seguintes tratamentos: Testemunha 1 (PI em 20/07/07 - sem PV), Testemunha 2 (PI em 22/08/07 - sem PV), T1 (PI em 20/07/07 e PV em 15/11/07), T2 (PI em 20/07/07 e PV em 17/12/07), T3 (PI em 22/08/07 e PV em 15/11/07) e T4 (PI em 22/08/07 e PV em 17/12/07), sendo a PI feita em cordão esporonado e a PV mediante desponte do sarmento a partir da quarta gema acima do último cacho. Avaliou-se a duração dos estádios fenológicos, as épocas de colheita de cada safra, a produção por planta, a massa dos cachos, os sólidos solúveis totais (SST), a acidez total titulável (ATT), a relação SST/ATT, o índice de área foliar (IAF), o potencial da água na folha e o conteúdo de reservas nos ramos. A antecipação da PI permitiu adiantar, para um período de menor oferta, a colheita da primeira safra nas cultivares Niágara Branca, Niágara Rosada e Concord. O tratamento T3 foi o mais eficiente para o alcance de uma segunda safra de uva no mesmo ciclo vegetativo da videira...

Effects of the pruning intensity and tree size on multi-stemmed Prosopis flexuosa trees in the Central Monte, Argentina

Alvarez, Juan Agustin; Villagra, Pablo Eugenio; Villalba, Ricardo; Debandi, Guillermo
Fonte: Elsevier Science Publicador: Elsevier Science
Tipo: info:eu-repo/semantics/article; info:ar-repo/semantics/artículo; info:eu-repo/semantics/publishedVersion Formato: application/pdf
ENG
Relevância na Pesquisa
36.6%
Forestry use in Prosopis flexuosa woodlands in the Central Monte is limited by low wood productivity and by most of the trees being multi-stemmed. Desert inhabitants have turned pruning into a common practice to get some forest products, increase wood production and improve tree shape. In this study we tested pruning practices used by locals on trees of different diameter classes and different pruning intensities in the aeolian plains of the Central Monte Desert. Two trials were conducted: (a) we tested the effects of pruning on three types of trees: adult multi-stemmed trees (7.5–15 cm basal diameter; n = 12 for pruned trees and 10 for control), young trees (3–7.5 cm basal diameter; n = 20 for pruned trees and 18 for control), and saplings (<3 cm basal diameter; n = 15 for pruned trees and 18 for control); (b) we compared the effects of different pruning intensities: heavy pruning (50% of crown removed and n = 10), intermediate pruning (25% of crown removed; n = 10), and unpruned individuals (n = 10). Basal diameters of all stems, total tree height, largest and smallest crown diameters were measured yearly. We estimated the equivalent basal diameter (EBD) and crown volume. Linear mixed models (LMM), in continuous variables, and general linear mixed models (GLMM)...

Caracterização fenológica físico-química e uso da geoestatística em goiabeira (Psidium guajava L.) Pedro Sato sob diferentes épocas de poda; Phenological and Physio-chemical caracterization and use of geostatistics in guava tree (Psidium guajava L.) ´Pedro Sato´, at different pruning times

Hojo, Ronaldo Hissayuki
Fonte: UNIVERSIDADE FEDERAL DE LAVRAS; DAG - Programa de Pós-graduação; UFLA; BRASIL Publicador: UNIVERSIDADE FEDERAL DE LAVRAS; DAG - Programa de Pós-graduação; UFLA; BRASIL
Tipo: Dissertação
Publicado em 04/09/2014 PT_BR
Relevância na Pesquisa
36.48%
O presente estudo constou da execução de três experimentos, todos conduzidos em função de épocas de poda (setembro e dezembro de 2003, março e junho de 2004), num pomar de goiabeira ´Pedro Sato´ com quatro anos de idade em Lavras, MG. No primeiro experimento, buscou-se caracterizar a sua fenologia e, no segundo, a produção e a qualidade dos frutos produzidos, verificando-se, tanto no primeiro como no segundo caso, a importância da possibilidade de produção em diferentes épocas do ano, com qualidade aceitável para o consumidor, bem como auxiliar o produtor no manejo da cultura de acordo com o desenvolvimento da planta. Utilizando-se 10 plantas para cada época de poda, num delineamento de blocos casualizados, foram avaliados, no primeiro estudo, os dados sobre os estádios fenológicos e, no segundo estudo, a produção e qualidade dos frutos produzidos, todos de acordo com a época de poda. Com bases nos dados obtidos, no primeiro trabalho foi possível estabelecer a indicação das diferentes fenofases da cultura e no segundo trabalho foi possível, com base nas condições locais, observar a produção de frutos em praticamente todos os meses do ano com o manejo das podas, bem como a apresentação do produto com qualidade aceitável ao consumidor. Já no terceiro experimento...

Optimum pruning intensity in Eucalytpus dunnii for clear wood producing.; INTENSIDADE ÓTIMA DE PODA EM Eucalyptus dunnii PARA A PRODUÇÃO DE MADEIRA LIVRE DE NÓS

Dobner Jr., Mário; Universidade Federal de Santa Catarina; Seitz, Rudi Arno; Universidade Federal de Santa Catarina
Fonte: FUPEF DO PARANÁ Publicador: FUPEF DO PARANÁ
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; Artigo Avaliado pelos Pares Formato: application/pdf
Publicado em 12/08/2015 POR
Relevância na Pesquisa
36.53%
Eucalytpus dunnii é uma espécie subtropical e tem seu cultivo indicado para regiões onde há ocorrência de geadas. Apesar de ser atualmente utilizada para a produção de papel, carvão e chapas, o uso sólido da madeira para fins mais nobres é conhecido, desde que práticas silviculturais como podas e desbastes sejam consideradas. O presente estudo teve como objetivo analisar o crescimento de indivíduos dominantes de E. dunnii submetidos a diferentes intensidades de poda. Foram testadas quatro diferentes intensidades de poda, mantendo uma copa remanescente de 100, 80, 50 e 20% da altura total de árvores dominantes. Foi utilizado um delineamento inteiramente casualizado com 10 indivíduos por tratamento. Passados 20 meses da realização da poda, a manutenção de até 50% da copa foi suficiente para manter um crescimento em diâmetro considerado normal. Mais importante que a proporção de copa remanescente, é o comprimento absoluto das mesmas. Conclui-se que são necessários, no mínimo, 4 m de copa remanescente para que as árvores mantenham um incremento periódico anual acima de 4 cm (média anual durante o período de 17 a 37 meses). Ao ultrapassar este limite, perdas na ordem de 50% do incremento em diâmetro são esperadas.AbstractOptimum pruning intensity in Eucalytpus dunnii for clear wood producing. Eucalyptus dunnii is a subtropical species...

Manejo do crescimento em diâmetro da árvore individual e o impacto para a poda de Eucalyptus grandis no Brasil.; MANAGEMENT OF INDIVIDUAL TREE DIAMETER GROWTH AND IMPLICATIONS FOR PRUNING FOR BRAZILIAN Eucalyptus grandis Hill ex Maiden

Nutto, Leif; Spathelf, Peter; Seling, Irene
Fonte: FUPEF DO PARANÁ Publicador: FUPEF DO PARANÁ
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; Artigo Avaliado pelos Pares Formato: application/pdf
Publicado em 12/03/2007 POR
Relevância na Pesquisa
36.32%
No presente estudo, foi desenvolvido um programa de desbaste e um modelo para a descrição da dinâmica da base da copa. Para esse fim, 485 árvores foram medidas em parcelas temporárias das empresas Klabin Riocell (Guaíba, hoje Aracruz), Todeschini (Cachoeira do Sul), Universidade Federal de Santa Maria (RS) e Aracruz Celulose (Espirito Santo e Bahia). Foi encontrada uma correlação linear entre a largura da copa e o diâmetro à altura do peito (DBH), usando-se a metodologia da análise de regressão. A equação obtida foi largura da copa = e0.504+0.0307* DBH, com um coeficiente de determinação de 0.78 e um erro padrão de 0.034. Com esse modelo, foi calculado o espaço da árvore individual necessário para alcançar um determinado crescimento em diâmetro durante todo o ciclo de rotação, considerando uma cobertura do dossel média de 70%. Assim, o número de árvores por hectare em diferentes estágios de desenvolvimento foi calculado para diferentes sistemas de manejo com o objetivo de produzir madeira para serraria em ciclos de rotações curtas. Também foi obtido um modelo multivariado descrevendo a altura da base da copa viva em função das variáveis diâmetro à altura do peito (DBH) e altura total. Com base nesses modelos...

PRODUCTION OF ‘NIAGARA BRANCA’ AND ‘CONCORD’ VARIETIES SUBMITTED TO TWO HARVESTS BY SEASON AT DEPRESSÃO CENTRAL OF RIO GRANDE DO SUL; PRODUÇÃO DE VIDEIRAS ‘NIAGARA BRANCA’ E ‘CONCORD’ SUBMETIDAS A DUAS SAFRAS POR CICLO VEGETATIVO NA DEPRESSÃO CENTRAL DO RIO GRANDE DO SUL

ANZANELLO, Rafael; UFRGS; SOUZA, Paulo Vitor Dutra de; UFRGS; GONZATTO, Mateus Pereira; UFRGS
Fonte: UFPR Publicador: UFPR
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; Formato: application/pdf
Publicado em 24/06/2008 ENG
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46.51%
The adequate pruning management of grapevine permits to change its fenology, modifying the crop periods and creating conditions for two annual harvests. A winter pruning period (08/08/05) and two periods of summer pruning (04/11/05 and 02/12/05) were evaluated in order to obtain two annual harvests, using Niagara Branca and Concord grape varieties (both Vitis labrusca). This experiment was performed during the 2005/2006 season in grapevines conducted by cordon training in Eldorado do Sul county, Rio Grande do Sul, Brazil. Variables associated to fenology, plant production, weight of grapes, total soluble solids, total titratable acidity and ratio total soluble solids by total titratable acidity related to harvests were analyzed. The fenology of plants pruned in winter was 156 days for ‘Niagara Branca’ and 161 days for ‘Concord’, and the harvest was performed around January, 15th. Regarding the summer pruning performed on 04/11/05 and 02/12/05, fenology cycle of shoots was 127 and 113 days for the ‘Niagara Branca’ and 134 and 120 days for the ‘Concord’, respectively. Harvest was realized in middle April, 15th. The summer pruning realized in 04/11/05 provided higher production per plant and grapes of higher weight...

Sustainable management and use of a medicinal emblematic plant in Chile: Buddleja globosa Hope

Wilckens,P; Fernández,MP; Gómez,M; Peña,I; Montenegro,G
Fonte: Phyton (Buenos Aires) Publicador: Phyton (Buenos Aires)
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2013 EN
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36.41%
Buddleja globosa Hope is a well-known native, medicinal plant because of its digestive and cicatrizing properties. Due to the increasing domestic and international demand, B. globosa abundance and distribution in Chile has resulted in the intensive exploitation of the plant's natural habitat, without consideration of the plant's regenerative capacity. The main objective of this research was to establish the B. globosa growth cycle and model its regeneration cycle. This would allow for more productive, efficient and sustainable use and management of this species, thus ensuring its long-term conservation. We selected two study sites, one wild and another one cultivated. In each one, ten individuals were marked as control treatments, for further observations, in order to quantify the monthly growth dynamics. Fifteen plants selected at random were marked in each site under study to know the regeneration rates with three pruning methods: apical, medium and basal (5 plants per treatment). The results showed significant differences between the control and management treatments on plants grown in the valley, and among the wild plants of the mountains. The biomass growth rates achieved in the treatments of pruning, and the period that those were maximum at both sites...