Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 10
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
EFFECTS OF PHOTOSELECTIVE SHADE NETS ON EARLY GROWTH OF SUGARCANE SEEDLINGS REA
Cordeiro Júnior,José J. F.; Cavalcanti,Sávio D. L.; Souza,Rayanne T. de A.; Batista,Pedro H. D.; Guiselini,Cristiane.
ABSTRACT Sugarcane has a great economic interest in Brazil, so it needs technologies to increase its yield strength, especially for seedling production. This study aimed to ascertain the influence of shading nets on early growth and development of pre-sprouted sugarcane seedlings. An experiment was conducted in a protected environment, in the Rural Federal University of Pernambuco (UFRPE), in Recife-PE, Brazil. The protected environments were covered with anti-UV low-density polyethylene plastic plus: Solpack® red ultranet net, Solpack® white net, Solpack® freshnet net, and without shade net, and five replications each. The experiment was carried out in a completely randomized design, and multivariate principal component analysis (PCA) was used to verify...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Protected environment; Shade nets; Solar radiation; Saccharum officinarum.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000100010
Imagem não selecionada

Imprime registro no formato completo
GÁLIA MELONS PRODUCTION IN PROTECTED ENVIRONMENT UNDER DIFFERENT IRRIGATION DEPTHS REA
Lima,Elvis M. de C.; Carvalho,Jacinto de A.; Viol,Miguel A.; Almeida,Rodrigo C. de; Rezende,Fátima C..
ABSTRACT The study aimed to evaluate the “Gália” melons productive characteristics grown in greenhouse under different irrigation levels, and conducted with and without soil cover by plastic mulching. Experiments I (WC) and II (WtC) were conducted simultaneously in a protected environment, using a completely randomized design (CRD), where plants of Gália melons (Hybrid Nectar cv.) received five levels of water depth defined by 50, 75, 100, 125 and 150% of evapo-transpiration (water requirement), with four replications, differing only by utilization (WC) or not (WtC) of plastic mulching. The results showed that the variables productivity, average weight, length and diameter of the fruits were affected by different levels of water replacement in the soil...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Irrigation management; Protected environment; Productivity.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000100075
Imagem não selecionada

Imprime registro no formato completo
Greenhouse crisphead lettuce grown with mulching and under different soil water tensions REA
Geisenhoff,Luciano O; Pereira,Geraldo M; Lima Junior,Joaquim A. de; Silva,Andre L. Pereira da; Aviz,William L. Carrera de.
ABSTRACT Proper irrigation management is important both to enable adequate water supply and to minimize problems with diseases, nutrient leaching and unnecessary water and power wastes. Thus, this study aimed at improving irrigation management in greenhouses. For that reason, we assessed the effect of various water tensions on yield performance of crisphead lettuce, Raider-Plus cv. , grown with mulching. The experiment was conducted in greenhouse at the Federal University of Lavras. Treatments constituted five different soil water tensions, namely 12, 25, 35, 45, and 70 kPa. The results showed that irrigation must be carried out at water soil tension of around 12 kPa to reach satisfying commercial values for both total and commercial yield, 66 and 50 t...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lactuta sativa; Irrigation management; Protected environment; Soil covering.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000100046
Imagem não selecionada

Imprime registro no formato completo
Logistic growth models of China pinks, cultivated on seven substrates, as a function of degree days Ciência Rural
Milani,Marília; Lopes,Sidinei José; Bellé,Rogério Antônio; Backes,Fernanda Alice Antonello Londero.
ABSTRACT: The objective of this study was to characterize the height (H) and leaf number (LN) of China pinks, grown in seven substrates, as a function of degree days, using the logistic growth model. H and LN were measured from 56 plants per substrate, for 392 plants in total. Plants that were grown on substrates formed of 50% soil with 50% rice husk ash (50% S + 50% RH) and 80% rice husk ash with 20% worm castings (80% RH + 20% W) had the longest vegetative growth period (74d), corresponding to 1317.9ºCd. The logistic growth model, adjusted for H, showed differences in the estimation of maximum expected height (α) between the substrates, with values between 10.47cm for 50% S + 50% RH and 35.75cm for Mecplant(r). When α was estimated as LN, variation was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dianthus chinensis L; Growth model; Protected environment; Parameter estimation.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001101924
Imagem não selecionada

Imprime registro no formato completo
Photo-selective shade nets on the production and quality of sugarcane plantlets AGRIAMBI
Cordeiro Júnior,José J. F.; Pandorfi,Héliton; Barbosa Filho,José A. D.; Moraes,Alex S.; Almeida Neto,Luiz A. de; Guiselini,Cristiane.
ABSTRACT Brazil is the world’s largest producer of sugarcane (Saccharum officinarum L.) and research aimed at propagation has promoted higher quality in production. The objective of this study was to investigate the effect of the variation of micrometeorological elements on the survival and quality of pre-sprouted sugarcane plantlets. The study was carried out in a protected environment (UFRPE). Plantlets of the cultivar RB92579 were obtained by the technique of production of pre-sprouted plantlets. The protected environments were divided into four modules covered with low-density polyethylene plastic + photo-selective shade nets and one module without shade net. Micrometeorological data of global and photosynthetically active solar radiation, air...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Protected environment; Solar radiation spectrum; Saccharum officinarum.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000500366
Imagem não selecionada

Imprime registro no formato completo
Potential of Pinus elliottii Engelm. needles as substrate conditioner for the production of “Fepagro C37 reck”Citrus rootstocks” Rev. Bras. Frutic.
Ceccagno,Henrique; Souza,Vitor Dutra de; Schäfer,Gilmar; Avrella,Eduarda Demari; Fior,Claudimar Sidnei.
Abstract The production of citrus seedlings in protected environment requires a large amount of substrate, which must have adequate physical and chemical characteristics. The use of acidic conditioners, such as Pinus needles mixed with alkaline substrates, allows the cultivation of seedlings with better quality. The objective of this work was to evaluate the development of the “Fepagro C37 Reck” rootstock grown in different alkaline commercial substrate mixtures (Humosolo ES®) with Pinus elliottii needles. The experiment was carried out by testing alkaline substrate mixed with 5-month old of decomposition Pinus needles in situ decomposition and two granulometry sizes, 3.5 and 8.0 mm. The mixtures were performed in proportions between the needles with the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Physical-chemical characteristics of substrates; Protected environment; Seedlings; PH.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000301002
Imagem não selecionada

Imprime registro no formato completo
PROTECTED ENVIRONMENTS AND SUBSTRATES FOR MANGABEIRA SEEDLINGS (Hancornia Speciosa Gomez) PRODUCTION REA
Arrua,Luan L. De C.; Costa,Edilson; Bardiviesso,EstefâNia M.; Nascimento,Daniele M. Do; Binotti,Flavio F. Da S..
ABSTRACT Mangabeira is a native fruit tree from Brazil, which provides a delicious fruit to taste and beneficial to health, whose information about the seedlings production will assist the entire productive chain of this important species. The aim of this research was to evaluate protected environments and substrates compositions in the formation of mangabeira seedlings. For this, two greenhouses with different screens were used, the first covered with aluminized thermo-reflective screen of 50% shading and the second with black screen of 50% shading. Inside the environments, were tested substrates derived from combinations of various proportions of bovine manure (M), soil (S), medium vermiculite (MV), super fine vermiculite (FV) and fine sand (FS). For...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hancornia Speciosa; Protected environment; Climatic factors; Vermiculite; Sand.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000600984
Imagem não selecionada

Imprime registro no formato completo
Seedlings production of two tomato (Solanum licopersicum L.) cultivars under different environments and substrates Acta Agron. (Palmira)
Monteiro Neto,João Luiz Lopes; Araújo,Wellington Farias; Oliveira Vilarinho,Lucianne Braga; de Oliveira Nunes,Taline Katlen; da Silva,Edgley Soares; da Silva Maia,Sonicley; Albuquerque,José de Anchieta Alves de; Alves Chagas,Edvan; da Silva Siqueira,Raphael Henrique; Abanto-Rodriguez,Carlos.
Abstract The type of environment and substrates quality in seedlings production are essential for the production of productive plants under field conditions. In order to determine the best environment and substrate for seedlings production of two tomato cultivars (IPA 06 and Santamélia), two experiments, completely randomized and arranged in subdivided plots with five replicates, were conducted under the environmental conditions of Boa Vista, Roraima, Brazil. Treatments consisted of the association among five environments (A1 - greenhouse, A2 - Chromatinet ® 35% red, A3 - Chromatinet ® 50% red, A4 - Chromatinet ® 35% Silver and A5 - Chromatinet ® 50% Silver) and four substrates S1 - OrganoAmazon®; S2 -OrganoAmazon® + PuroHumus®; S3 - OrganoAmazon® +...
Tipo: Journal article Palavras-chave: Horticulture; Photoconverter shading nets; Plant propagation; Plant establishment; Protected environment; Transplanting.
Ano: 2018 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000200270
Imagem não selecionada

Imprime registro no formato completo
Size and form of plots for the culture of the Italian pumpkin in plastic greenhouse Scientia Agricola
Mello,Rodrigo Machado; Dal'Col Lúcio,Alessandro; Storck,Lindolfo; Lorentz,Leandro Homrich; Carpes,Ricardo Howes; Boligon,Alexandra Augusti.
Quality control is the guaranty that experimental error is kept under acceptable levels, and the definition of the proper size and form of experimental plots ensures acurate experimental planning. This paper aims to determine the proper plot size and shape for the culture of the Italian pumpkin in protected environments. Two experiments were set in plastic green house in distinct crop seasons: either Summer-Fall or Winter-Spring season. The experiment comprised eight, 23-m long lines with 20 plants each, and fruit weight was considered the main performance parameter. Estimates of best plots size and shape were obtained by the maximum curvature, variance comparison and Hatheway methods. The plot size and shape varied according to the season and the ideal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Curcubita pepo; Protected environment; Experiment planning; Quality control.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000400017
Imagem não selecionada

Imprime registro no formato completo
Sprouting of pre-sprouted sugarcane seedlings and micrometeorological variables under photo-selective nets AGRIAMBI
Cordeiro Júnior,José J. F.; Guiselini,Cristiane; Pandorfi,Héliton; Moraes,Alex S.; Menezes,Dimas; Almeida Neto,Luiz A. de.
ABSTRACT Sugarcane is a grass species that stands out worldwide in the production of ethanol. Brazil is the world’s largest producer and leader in exports, responsible for more than 50% of the products that are marketed worldwide. The objective of this study was to investigate the effect of photo-selective nets on micrometeorological variables and on sprouting of pre-sprouted sugarcane seedlings. The experiment was carried out in a protected environment at Universidade Federal Rural de Pernambuco - UFRPE, in a completely randomized design. Seedlings of cultivar RB92579 were obtained by the technique of production of pre-sprouted seedlings. The protected environment was divided into four modules corresponding to the treatments: covered with anti-UV...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Saccharum officinarum; Protected environment; Shade net; Propagation of seedlings.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000800625
Registros recuperados: 10
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional