Consulta: subjectFacets:"Thinning"
Registros recuperados: 22
Data/hora: 02/06/2024 13:36:45

Influencia de los aclareos sobre la densidad básica y ancho de anillo de la madera de Pinus patula Schi. Et Cham
Provedor de dados: 32
Autores: Goche Télles, José Rodolfo.
Se evalúo el efecto de los aclareos sobre la densidad básica y ancho de anillos  de la madera de Pinus patula, proveniente de un bosque natural con dos  calidades de estación, y de una plantación forestal. Para tal efecto se colectaron  cilindros de madera a una altura de 1.30 m sobre el fuste. En cada muestra se  determinó el ancho de los anillos de crecimiento y la densidad básica. Los  resultados sobre densidad básica mostraron que la calidad de estación y el  aclareo en el bosque natural no influyeron significativamente sobre el  parámetro, presentando valores de 0.45 y 0.44 g cm-3 para una calidad de  estación alta, antes y después del aclareo respectivamente; por otro lado, en  condiciones de calidad de estación baja los valores fueron 0.47 y 0.44...
Tipo: Tesis
Palavras-chave: Aclareos; Anillos de crecimiento; Calidad de estación; Densidad básica; Madera tardía; Doctorado; Forestal; Thinning; Growing rings; Site quality; Absolute wood density; Late wood.
Ano: 2007
URL: http://hdl.handle.net/10521/1441

Efecto de aclareos en el crecimiento de una plantación de Pinus patula Schl. et Cham. en Ixtlán, Oaxaca.
Provedor de dados: 32
Autores: Rodríguez Ortíz, Gerardo.
La eficiencia de crecimiento (EC) es la relación entre el follaje o el área de albura del fuste y el incremento maderable del árbol. Con este índice es posible analizar la respuesta del crecimiento y fisiología del fuste a factores de calidad de sitio, la edad, el aclareo y la densidad del rodal. El objetivo de este trabajo fue estimar y analizar los componentes de biomasa aérea y la eficiencia de crecimiento en árboles de Pinus patula Schl. et Cham.  sujetos a aclareos en una plantación en Ixtlán, Oaxaca. En 2009 se realizaron muestreos destructivos en 30 árboles localizados en parcelas aclareadas y un testigo, para obtener muestras del componente aéreo. La biomasa de acículas por rama se estimó utilizando variables más susceptibles a las variaciones del...
Palavras-chave: Aclareos; Biomasa aérea; Albura; Area foliar; Eficiencia de crecimiento; Thinning; Aboveground biomass; Sapwood; Leaf area; Growth efficiency; Doctorado; Fisiología Vegetal.
Ano: 2010
URL: http://hdl.handle.net/10521/318

Managing for Old Growth in Frequent-fire Landscapes
Provedor de dados: 7
Autores: Fiedler, Carl E.; College of Forestry and Conservation, University of Montana; carl.fiedler@umontana.edu; Friederici, Peter; School of Communication, Northern Arizona University; peter.friederici@nau.edu; Petruncio, Mark; Forestry Program, Yakama Nation; petruncio@yakama.com; Denton, Charles; Ecological Restoration Institute; Charles.Denton@nau.edu; Hacker, W. David; Forestry Department, New Mexico Highlands University; david_hacker@nmhu.edu.
There is no one-size-fits-all approach to managing frequent-fire, old-growth forests. However, there are general guidelines to follow: 1) set objectives for both structure (tree density, diameter distribution, tree species composition, spatial arrangement, amount of coarse woody debris) and function (nutrient cycling, desired tree species regeneration); 2) prioritize treatments according to ecological, economic, and social needs and risks; 3) identify the potential treatments (natural fire, prescribed fire, silvicultural cutting) that best meet the objectives and scale of the project; and 4) implement the treatment(s). We discuss each of these guidelines in this article.
Tipo: Peer-Reviewed article
Palavras-chave: Fire; Forest management; Function; Silvicultural treatments; Structure; Thinning.
Ano: 2007

Condução de ramas no melão cv. Eldorado 300.
Provedor de dados: 14
Autores: DIAS, R. de C. S.; TERAO, D.; ARAUJO, J. P. de; OLIVEIRA, C. A. V.
Analisa o efeito de diferentes formas de condução de ramas sobre o rendimento final e a qualidade do melão Eldorado 300.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Eldorado; Rama; Condução; Variety; Quality; Thinning; Cultivo; Melon.; Melão; Cucumis Melo; Raleio; Rendimento; Qualidade; Variedade.; Melons; Yields.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131886

Manejo e tratos culturais da videira.
Provedor de dados: 14
Autores: LEAO, P. C. de S.
bitstream/item/177308/1/8765.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Cultivo; Controle de planta daninha; Cultivation; Management; Thinning; Manejo; Poda; Raleio; Regulador de Crescimento; Uva; Vitis Vinifera; Grapes; Plant growth substances; Pruning; Weed control.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134100

O Cultivo do mamão.
Provedor de dados: 14
Autores: SANCHES, N. F.; DANTAS, J. L. L.
Para o cultivo do mamoeiro e recomendado um conjunto de técnicas que viabiliza a exploração comercial desta cultura, contendo informações sobre programação e plantio, adubação, tratos culturais, controle de pragas e doenças, métodos de colheita e pós-colheita, formas de utilização, bem como os coeficientes técnicos e custo de produção para implantação da cultura.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Carica papaya L; Cultivo; Variedades; Sunrise Solo; Fomosa; Condições edafoclimáticas; Mudas; Sementes; Plantas daninhas; Desbate; Desbrota; Culturas intercalares; Pragas; Doencas; Frigoconservacao; Ultilizacao; Papaya; Cultivation; Sunrise; Formosa; Leal analysis; Edaphic and climatic; Conditions; Spacing; Thinning; Diseases; Preservation; Ultilization.; Calagem; Boro; Análise Foliar; Comercialização; Espaçamento; Mamão; Solo.; Boron; Marketing; Intercropping; Liming; Pests; Production costs; Seedlings; Seeds; Sprouting; Varieties; Weeds.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/642741

Evolution of rifted continental margins: The case of the Gulf of Lions (Western Mediterranean Basin)
Provedor de dados: 5
Autores: Bache, Francois; Olivet, Jean-louis; Gorini, Christian; Aslanian, Daniel; Labails, Cinthia; Rabineau, Marina.
The formation of rifted continental margins has long been explained by numerous physical models. However, field observations are still lacking to validate or constrain these models. This study presents major new observations on the broad continental margin of the Gulf of Lions, based on a large amount of varied data. Two contrasting regions characterize the thinned continental crust of this margin. One of these regions corresponds to a narrow rift zone (40–50 km wide) that was highly thinned and stretched during rifting. In contrast with this domain, a large part of the margin subsided slowly during rifting and then rapidly after rifting. The thinning of this domain cannot be explained by stretching of the upper crust. We can thus recognize a zonation of...
Tipo: Text
Palavras-chave: Subsidence; Passive margins; Back-arc; Rifting; Erosion; Stretching; Thinning; Western Mediterranean; Gulf of Lions.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00001/11230/7736.pdf

Chickpea Variety Nabin (ICCL 81248)
Provedor de dados: 30
Palavras-chave: Chickpeas; Millets; Yields; Plant habit; Selection; Location; Tropical zones; Crossing over; Crops; Thinning.
Ano: 1994
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4652

Chickpea Variety Nabin (ICCL 81248)
Provedor de dados: 30
Palavras-chave: Chickpeas; Millets; Yields; Plant habit; Selection; Location; Tropical zones; Crossing over; Crops; Thinning.
Ano: 1994
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3850

Carbon Accumulation in Pinus taeda Estimated by X-rays Densitometry and Trunk Analysis
Provedor de dados: 190
Autores: Bellote, Antonio Francisco Jurado; Dedecek, Renato Antonio; Lavoranti, Osmir José; Tomazello Filho, Mario de Castro; Andrade, Guilherme de Castro.
The objective of this work was to evaluate Pinus aeda growth and based on X-ray methods of  densitometry and bole analyses to develop mathematical models to estimate carbon amount accumulated on trees of different ages varying on DBH. Five P. taeda plantations were selected on sites of different soils, thinning intensity and growing rate. On each site dominant trees were selected and discs cuts from different heights were collected and submitted to X-ray densitometry for trunk analyses. Mathematical models were developed, to generated equations to compare by testing their statistical identity and equality and to validate by bootstrap methods. The results showed that P. taeda productivity was influenced by soil and silvicultural practices; X-ray...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Productivity; Mathematical models; Carbon sequestration; Thinning; Forestry sites. Produtividade; Modelos matemáticos; Seqüestro de carbono; Desbaste; Sítios florestais.
Ano: 2011
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/208

Effect of silvicultural treatments in the mecrusse ecosystem in Mabote, Inhambane Pronvice, Mozambique
Provedor de dados: 190
Autores: Bila, Jacob Miguel; Chelene, Inês; Manhiça, Gabriel; Mabjaia, Nazaré.
This study aimed to show the effect of silvicultural treatments to improve the health and productivity of forests mecrusse (Androstachys johnsonii Prain, 1. c.), in the Mabote District of Inhambane province. The experiment design was based on a complete randomization design, comprising of a group of three plots (20 m x 50 m) and three treatments (Control - C, phytosanity - P and thinning - T). The results showed that the silvicultural positively treatments influenced the health and growth. The periodic annual increment (PAI) observed during the period under review was 1.22 mm year-1. There was an PAI of 1.3 mm for the treatment phytosanity (P) and thinning (T), and 0.9 mm year-1 for the control plots. The interventions did not affect the structure of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Silvicultural treatments; Thinning; Growth. Tratamentos silviculturais; Desbastes; Crescimento.
Ano: 2011
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/154

Modeling growth and yield of loblolly pinestands under intensive management
Provedor de dados: 86
Autores: Ferraz Filho,Antonio Carlos; Scolforo,José Roberto Soares; Oliveira,Antonio Donizette de; Mello,José Márcio de.
Abstract:The objective of this work was to develop and validate a prognosis system for volume yield and basal area of intensively managed loblolly pine (Pinus taeda) stands, using stand and diameter class models compatible in basal area estimates. The data used in the study were obtained from plantations located in northern Uruguay. For model validation without data loss, a three-phase validation scheme was applied: first, the equations were fitted without the validation database; then, model validation was carried out; and, finally, the database was regrouped to recalibrate the parameter values. After the validation and final parameterization of the models, a simulation of the first commercial thinning was carried out. The developed prognosis system was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pinus taeda; Model validation; Prognosis system; Pruning; Sawtimber; Thinning.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000800707

EFFECT OF SHOOT AND BUNCH DENSITY ON YIELD AND QUALITY OF ‘SUGRAONE’ AND ‘THOMPSON SEEDLESS’ TABLE GRAPES
Provedor de dados: 94
Autores: LEÃO,PATRÍCIA COELHO DE SOUZA; LIMA,MARIA AUXILIADORA COELHO DE.
ABSTRACT  This study aimed to evaluate the effect of shoot and bunch density through thinning practices on yield components and quality of ‘Thompson Seedless’ and ‘Sugraone’ grapevines in the São Francisco River valley. The experiments were carried out during two growing seasons (2010 and 2012) in commercial vineyards of Lagoa Grande, state of Pernambuco, Brazil. Treatments were a split plot represented by three shoot densities and three bunch densities in a random block design. The yield of ‘Thompson Seedless’ grapevine was up to 25.9% higher in plants kept with 6 bunches.m-2, reaching 20.7 and 27.0 kg.plant-1, in the 2010 and 2012 crop years, respectively. Although effects on yield were not observed in ‘Sugraone’ cultivar, bunch and berry mass was higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seedless grapes; Vitis vinifera L.; Shoot removal; Thinning.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000400705

Hydrological behaviour of vertisols in the Brazilian semi-arid region: the importance of rainfall of less than 30 mm
Provedor de dados: 124
Autores: Andrade,Eunice Maia de; Rodrigues,Rafael do Nascimento; Palácio,Helba Araújo de Queiroz; Brasil,José Bandeira; Guerreiro,Maria João Simas.
ABSTRACT The greater probability of small rainfall events occurring in semi-arid regions, and the little understanding of their role in hydrological processes, has led to this investigation of surface runoff generated during these events in two adjacent micro basins in the Brazilian semi-arid region. The types of plant cover to be investigated were the Phytogeographical Caatinga Domain under regeneration for 35 years (CPDReg) and thinned CPD (CPDThin), which consisted of the elimination of trees with a diameter of &lt;10 cm. Two historical series were considered, one of 40 years (1974-2013) with 2,259 events and the other consisting of 247 rainfall events of &lt;30 mm from 2009 to 2013. The cumulative frequency distribution showed that the series of 247...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eco-hydrological processes; Seasonally Dry Tropical Forest; Thinning; Surface runoff; Rainfall patterns.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000200408

อิทธิพลของการปลิดผลต่อจำนวนผลและคุณภาพของพลับพันธุ์ Xichu
Provedor de dados: 106
Autores: Aunchalee Thongsuksai.
Special Problem (B.S. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Persimmon; Xichu; Thinning; Number of fruits; Fruit qualities; พลับ; พันธุ์ Xichu; การปลิดผล; จำนวนผล; คุณภาพผล; ขนาดผล.
Ano: 1999
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5501

Crop production and soil management practices for improving yield of corn
Provedor de dados: 106
Autores: Owaht Jootanon; Supot Faungfupong; Rachain Thiraporn.
18 tables
Palavras-chave: Corn; Maize; Varieties; Plant population; Thinning; Weed control; Tassel removal; Leaf angle; Plant densities; Crop production; Soil management practices; ข้าวโพด; การผลิต; การจัดการดิน.
Ano: 1971
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3759

ผลของการตัดขยายระยะต่อการเติบโต การใช้น้ำ และคุณสมบัติของดินบางประการของสวนป่าไม้ต่างถิ่นในที่สูง
Provedor de dados: 106
Autores: Kritsanakorn Phankham.
Thesis (M.Sc. in Forestry)
Tipo: PhysicalObject
Palavras-chave: Exotic tree plantation; Thinning; Growth; Water use; Soil properties; High land; ไม้กระถินดอย; สวนป่าไม้ต่างถิ่น; การเติบโต; การใช้น้ำ; คุณสมบัติของดิน; การตัดขยายระยะ; ผลผลิต.
Ano: 2004
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5463

Economic analysis of corn production under different cultural practices
Provedor de dados: 106
Autores: Sarun Wattanutchariya; Sanit Kao-ian.
8 tables
Palavras-chave: Corn; Maize; Economic analysis; Costs; Profitability; Cultural practices; Corn production; Seed; Land preparation; Planting methods; Fertilizers; Herbicides; Insecticides; Thinning; Labor requirement; ข้าวโพด; การวิเคราะห์เศรษฐกิจ; การเพาะปลูก; การผลิต.
Ano: 1983
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4154

ผลของการตัดสางขยายระยะไม้ต่างถิ่นต่อปริมาณน้ำพืชยึดบริเวณ สถานีเกษตรหลวงอ่างขาง จังหวัดเชียงใหม่
Provedor de dados: 106
Autores: Kulthida Pathpanth.
Thesis (M.Sc. in Forestry)
Tipo: PhysicalObject
Palavras-chave: Exotic tree plantation; Thinning; Intercepted water; Royal Angkhang Agricultural Station; กระถินดอย; สวนป่าไม้ต่างถิ่น; การตัดสางขยายระยะ; ปริมาณน้ำพืชยึด; สถานีเกษตรหลวงอ่างขาง; จ.เชียงใหม่; เมเปิลหอม; จันทร์ทอง.
Ano: 2002
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5466

ผลของการตัดสางขยายระยะต่อปริมาณการสูญเสียดินและน้ำในสวนป่าไม้ต่างถิ่น สถานีเกษตรหลวงอ่างขาง จังหวัดเชียงใหม่
Provedor de dados: 106
Autores: Sitthisak Moukomla.
Thesis (M.Sc. in Forestry)
Tipo: PhysicalObject
Palavras-chave: Exotic tree plantation; Thinning; Growth; Water losses; Royal Angkhang Agricultural Station; Aleurities montana; Zelkova serrata; Liquidambar formosana; ป่าไม้; สวนป่าไม้ต่างถิ่น; การตัดสางขยายระยะ; การสูญเสียดิน; การสูญเสียน้ำ; สถานีเกษตรหลวงอ่างขาง; จ.เชียงใหม่.
Ano: 2002
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5464

The relationship between plant density and survival to water stress in seedlings of a legume tree
Provedor de dados: 39
Autores: Honda,Eliane Akiko; Pilon,Natashi Aparecida Lima; Durigan,Giselda.
ABSTRACT Competition for soil water is one of the major processes that drive the assembly of plant communities, particularly in regions subjected to long dry seasons. The relationship between plant density and soil water competition has strong, but poorly understood, practical implications for population dynamics, restoration and conservation. We planted seedlings of the pioneer legume tree Senegalia polyphylla in containers and assessed the effects of plant density on their resistance to water stress. We completely eliminated the above-ground parts (stem and shoots) of randomly selected plants at 60-days post-planting in order to create three different densities of seedlings. We saturated the soil of the remaining seedlings and then deprived them of...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Drought stress; Evapotranspiration; Management; Plant competition; Senegalia polyphylla; Soil water; Thinning.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000300602

Volume equations for Khaya ivorensis A. Chev. plantations in Brazil
Provedor de dados: 42
Autores: OLIVEIRA,XIMENA M. DE; RIBEIRO,ANDRESSA; FERRAZ FILHO,ANTONIO CARLOS; MAYRINCK,RAFAELLA C.; LIMA,RENATO R. DE; SCOLFORO,JOSÉ ROBERTO S.
Abstract African mahogany (Khaya spp.) plantations are in expansion in Brazil and in the world. This fact justifies the need for studies related to its growth and yield. This paper aimed to evaluate the performance of single-entry and double-entry models for estimating merchantable and total volume for Khaya ivorensis plantations before the first thinning (7 years) and expected final cut (15 years). Volume data was from 100 and 46 trees in Minas Gerais and Pará states, respectively, by using an electronic dendrometer (Criterion RD 1000). Observed volumes were calculated by Smalian’s formula. To validate the optical dendrometer, 10 trees were felled and had their volume measured, and compared with the volumes measured indirectly. The results showed that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: African mahogany; Forest mensuration; Non-destructive measurements; Thinning.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703285