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| Registros recuperados: 35 | |
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| Silva,Danilo Corrêa; Passini,Roberta. |
| ABSTRACT This research aimed to assess the climatization configuration in a holding pen for dairy cattle considering physiological responses of animals and thermal comfort indexes. Experimental design consisted of 16 cows in a Latin square design containing four groups of four animals (G1, G2, G3 and G4) and four periods (P1, P2, P3 and P4), in which four environments were used as treatments: EXT – external environment (control); SHA – shading with polypropylene mesh, 80% light interception; S+S – shading and water sprinkling; and S+S+V – shading, sprinkling and ventilation. Dry and wet bulb temperature, black globe temperature, wind speed and humidity were recorded during the climatization process, between October 13 and December 7. Subsequently,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Shading; Adiabatic evaporative cooling system; Thermal indexes. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000200206 |
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| Oliveira,Rívia de Souza Vaz; Salomão,Leandro Caixeta; Morgado,Hélber Souto; Sousa,Cleiton Mateus; Oliveira,Henrique Fonseca E de. |
| ABSTRACT Basil is used as spice and for medicinal purposes. Its growth is influenced by environmental factors, mainly soil moisture and air temperature. Thus, this study was installed to evaluate growth and production of basil under different levels of luminosity and water replacement. The experimental design was completely randomized, with six replicates, arranged in split plot scheme, with three luminosity levels in the plots (full sun, 50% and 70% shading) and four water replacement levels in the subplots (25, 50, 75 and 100% ETc). We evaluated plant height, stalk diameter, number of leaves and branches, root system volume, the largest root length, fresh and dry mass of roots and leaves. Data were submitted to variance analysis to observe significant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ocimum basilicum; Shading; Water deficit. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000300324 |
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| Teixeira,Ariany das Graças; Oliveira,Fábio Luiz de; Parajara,Magno do C; Zucoloto,Moises; Dalvi,Leandro P. |
| ABSTRACT Yacon is a crop which requires development of strategies for its cultivation. One of the possibilities is to introduce yacon in perennial crops using intercropping system. The aim of this study was to evaluate different planting densities of yacon grown in intercropping with corn under banana orchard, verifying its development and production. At 90 days after planting, morphological and physiological evaluations were done, at 210 days yacon was harvested, and its productivity calculated using the fresh tuberous root production. The Area Equivalence Index (IEA), and the Relative Contribution of Crops (CRC) to IEA were calculated. Yacon development and production were hampered by the corn intercropping (under the banana orchard), regardless of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Smallanthus sonchifolius; Spacing; Polyculture; Shading. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000100083 |
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| FERREIRA, F. I. G.; MESQUITA, A. L. M.; MOTA, M. do S. C. de S.; FUCK JUNIOR, S. C. de F.; MIRANDA, F. R. de. |
| A traça-da-castanha (Anacampsis phytomiella) é a praga mais importante do período de frutificação do cajueiro porque ataca o fruto (castanha), causando elevados prejuízos por destruir completamente a amêndoa da castanha de caju. O principal sintoma de ataque é a presença de um furo localizado na parte distal da castanha e é conhecido pelo produtor como castanha furada. O adulto é uma pequena mariposa de hábito noturno, com cerca de 1,5 cm de envergadura, coloração escura, com pequenas manchas claras nas asas. O objetivo deste trabalho foi investigar a infestação da traça-da-castanha nos clones de cajueiro-anão CCP 76, BRS 226, BRS 189, cultivados em consorciação com as fruteiras, banana, mamão e melancia, no Campo Experimental da Embrapa Agroindústria... |
| Tipo: Parte de livro |
Palavras-chave: Anacampsis phytomiella; Pest; Shading; Anacardium Occidentale; Praga de Planta; Consorciação de Cultura; Sombreamento; Anacardium; Intercropping. |
| Ano: 2022 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1144477 |
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| Partelli,Fábio Luiz; Araújo,André Vasconcellos; Vieira,Henrique Duarte; Dias,Jairo Rafael Machado; Menezes,Luis Fernando Tavares de; Ramalho,José Cochicho. |
| The objective of this work was to evaluate the influence of intercropping 'Conilon' coffee (Coffea canephora) with rubber trees on coffee tree microclimate, nutrition, growth, and yield. Rubber trees were planted in two double rows 33 m apart, with 4x2.3 m spacing between plants. Treatments consisted of the distances from the coffee plants to the rubber trees: 3, 6, 9, 12, and 15 m. Measurements of atmospheric variables (temperature, irradiance, and relative humidity), leaf nutrient concentration, internode length of plagiotropic and orthotropic branches, individual leaf area, chlorophyll content, and yield were performed. Intercropping promotes changes in the microclimatic conditions of coffee plants close to rubber trees, with reduction of temperature... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea canéfora; Hevea brasiliensis; Irradiance; Monoculture; Shading. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014001100872 |
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| Pimentel,Márcio Sampaio; De-Polli,Helvécio; Aquino,Adriana Maria de; Correia,Maria Elizabeth Fernandes; Rouws,Janaina Ribeiro Costa. |
| The objective of this work was to assess the effect of different coffee organic cultivation systems on chemical and biological soil characteristics, in different seasons of the year. The following systems were evaluated: coffee intercropped with one (CJ1), two (CJ2) or three (CJ3) pigeon pea (Cajanus cajan) alleys; coffee planted under full sun (CS); area planted with sweet pepper and snap bean in a conventional tillage system (AC); and secondary forest area (FFR). Row spacing in CJ1, CJ2, CJ3 and CS was 2.0x1.0, 2.8x1.0, 3.6x1.0, and 2.8x1.0 m, respectively. Soil samples were collected at 10-cm depth, during the four seasons of the year. The results were subjected to analysis of variance, principal component analysis, and redundancy analysis. There was an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cajanus cajan; Coffea arabica; Edaphic macrofauna; Metabolic quotient; Shading; Soil microbial biomass. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000500013 |
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| SANTOS JUNIOR,A.; FREITAS,F.C.L.; SANTOS,I.T.; SILVA,D.C.; PAIXÃO,G.P.; SEDIYAMA,C.S.. |
| ABSTRACT: The repetitive use of glyphosate in the control of weeds in eucalyptus plantations has selected tolerant species such as Commelina benghalensis. Therefore, the use of herbicides of other mechanisms of action, such as saflufenacil, in rotation or combination with glyphosate, is necessary to reduce damages caused by C. benghalensis, whose sensitivity to herbicides can be influenced by the shading caused by the eucalyptus crop. This study aimed to assess the efficiency of saflufenacil in the management of C. benghalensis at different shading levels. Three experiments were carried out regarding a certain shading level (cultivation environment with 0, 40, and 55% shade). The experimental design was a randomized block design with five herbicide doses... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Shading; Chemical control; Biomass allocation; Weed; Benghal dayflower. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100249 |
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| FELFILI,JEANINE MARIA; HILGBERT,LUÍS FERNANDO; FRANCO,AUGUSTO CÉSAR; SOUSA-SILVA,JOSÉ CARLOS; RESENDE,ALBA VALÉRIA; NOGUEIRA,MARIA VALDENETE PEREIRA. |
| As perturbações por desmatamentos, queimadas e mineração nas matas de galeria estão se avolumando em função do desenvolvimento econômico, gerando desequilíbrio ecológico e tornando necessários estudos que possibilitem a recuperação deste ecossistema. O objetivo deste trabalho foi o de avaliar, em viveiro, a resposta da espécie Sclerolobium paniculatum submetida a quatro níveis de sombreamento. O delineamento experimental foi inteiramente casualizado, com quatro tratamentos e quinze repetições. Cada tratamento representou uma fase da sucessão em floresta natural: pleno sol, simulando uma condição de área degradada; condição de clareira, com aproximadamente 50% de sombreamento; dossel da mata, em fase de fechamento, com sombreamento médio de 70%; dossel... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gallery forests; Light; Shading; Brazil. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041999000500011 |
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| BARBOSA,ANDRÉA RODRIGUES; YAMAMOTO,KIKYO; VALIO,IVANY F. M.. |
| Vochysia tucanorum Mart. (Vochysiaceae) is a very widely distributed species in the cerrado and forests in Brazil, from the State of Bahia to Paraná. Its seed germination was analysed under eight treatments using different conditions of light and temperature. Up to 73 days, at least ca. 93% of the seeds germinated in all treatments, except under alternating temperatures of 35°/10°C (62%). Light enhanced germination, except under constant temperature of 25°C when seeds are not photoblastic. At this temperature, the highest percentage of germination was found. Initial vegetative growth was analysed by comparing the effects of shading, by means of different percentages of full daylight (100%, 45%, 10.6%, 4.8%), and soils from cerrado and forest. During 123... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Germination; Seedling growth; Shading; Vochysia tucanorum; Soil; Cerrado. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041999000500008 |
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| Leal,Caio C. P.; Torres,Salvador B.; Freitas,Rômulo M. O. de; Nogueira,Narjara W.; Farias,Raul M. de. |
| ABSTRACTThis study aimed to determine the effects of the luminosity and type of container on producing Cassia grandis seedlings. Thus, in a substrate composed by topsoil + wood powder (1:1) the seedlings were grown into plastic tubets containing 0.3 dm3 of such substrate, or into plastic pots containing 1.0 dm3 of the same substrate, and subjected to 50 and 25% shading or full sunlight. The assessments were performed every two weeks by measuring plant height and stem diameter, during eight weeks period. At the end of this period, the leaf area, dry mass of shoots and roots, the ratio between height of plant/diameter of stem, and the Dickson quality index were also assessed. The experiment was carried out in a completely randomized design with treatments... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pink shower cassia; Forest species; Forest species seeds; Seedling growth; Shading. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015001000939 |
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| Wu,Yueyan; Qiu,Tian; Shen,ZiLi; Wu,Yanyan; Lu,Dan; He,Jingwen. |
| Abstract Shading is a practical measure to reduce the heat stress to grape trees in the summer. However, inappropriate shading will cause the reduction in leaf photosynthesis and consequently the retardation of growth for the plants or the loss of fruit yield and quality for the mature grape trees. In this study we have used 1-year-old ‘YinHong’ grape plants growing under different levels of shading, ranging from full sunlight 0% to 80% reduction, to investigate their growth, physiological and biochemical responses. The results show that shading rate =45% did not significantly affect grape growth. Shading over 45% reduction of the full sunlight, the growth of the grape plants were started to be inhibited. In addition, soluble protein content, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grape; Growth characteristics; Shading. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000500201 |
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| Araújo,André Vasconcellos; Partelli,Fábio Luiz; Oliosi,Gleison; Pezzopane,José Ricardo Macedo. |
| ABSTRACT There are few studies about the shading of Robusta coffee with rubber trees. The aim of this study was evaluate the microclimate, development and yield of Coffea canephora grown at full sun and shaded by rubber trees. The experiment consisted of a Robusta coffee crop (Coffea canephora) grown at under full sun and another coffee crop intercropped with rubber trees (Hevea brasiliensis). The rubber trees and coffee crop were planted in the East/West direction, in Jaguaré, Espírito Santo, Brazil. Was evaluated the luminosity, temperature and relative humidity, leaf nutrient concentrations; internodes of the plagiotropic and orthotropic branches, leaf area; relative chlorophyll index, and tree yield of the coffee crops. The shading directly influenced... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea canephora; Hevea brasiliens; Shading; Intercropping; Monoculture. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000400700 |
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| Paciullo,Domingos Sávio Campos; Castro,Carlos Renato Tavares de; Gomide,Carlos Augusto de Miranda; Fernandes,Priscila Beligoli; Rocha,Wadson Sebastião Duarte da; Müller,Marcelo Dias; Rossiello,Roberto Oscar Pereyra. |
| Shade in silvopastoral systems improves the thermal comfort of animals, but it may also affect the pasture productivity and can contribute to soil compaction in the shaded areas due to the increase in the number of animals looking for comfort. The effect of grazing at various distances from tree rows (under the tree canopy, at 6 and at 12 m away from the trees) on the soil bulk density and on the aerial and root biomass of Brachiaria decumbens was evaluated in both the dry and the rainy seasons. The study was carried out on an Orthic Ferralsol in a randomized block design with two replications. Tree rows were composed of Eucalyptus grandis and Acacia mangium species, and the paddocks were submitted to a rotational stocking management, using Holstein (Bos... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Forage mass; Root mass; Soil compaction; Shading; Shoot/root ratio. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000500014 |
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| Ureña-Sánchez,Raúl; Callejón-Ferre,Ángel Jesús; Pérez-Alonso,José; Carreño-Ortega,Ángel. |
| The integration of renewable energy sources into greenhouse crop production in southeastern Spain could provide extra income for growers. Wind energy could be captured by small to medium-sized wind turbines, gas could be produced from biomass, and solar energy could be gathered by solar panels. The aim of this study was to examine the effect of flexible solar panels, mounted on top of a greenhouse for electricity production, on yield and fruit quality of tomatoes (Solanum lycopersycum L., cv Daniela). This study was undertaken in a commercial raspa y amagado greenhouse, typical of the Almería region (Spain). Tomato plantlets were planted at a density of 0.75 plants m-2. The flexible solar panels were mounted on two parts of the roof in different... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum lycopersycum L.; Shading; Total production; Renewable energy; Fruit quality. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162012000400001 |
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| Aumonde,Tiago Zanatta; Pedó,Tiago; Borella,Junior; Amarante,Luciano do; Villela,Francisco Amaral. |
| This work aimed to evaluate the effect that different intensities of light have on the physiological attributes of red rice seeds and seedlings. Before and after emergence, seedlings were exposed to light levels of 35%; 65% and 100% in a greenhouse. We evaluated shoots and roots, in terms of length and dry mass, as well as leaf area and content of chlorophyll (a,b and total). In leaves and roots, we quantified the activity of superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT) and guaiacol peroxidase (POX). We determined the leaf area ratio (F A), leaf mass ratio (F W), specific leaf area (S A), and shoot/root ratio (P W). At higher light intensities, shoot length decreased, whereas root length, dry mass and number of tillers increased.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa L.; Shading; Chlorophyll content; Antioxidant enzymes. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200007 |
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| Registros recuperados: 35 | |
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