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Registros recuperados: 69
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PHOTOSYNTHETIC PERFORMANCE AND LEAF WATER POTENTIAL OF GULUPA (Passiflora edulis Sims, PASSIFLORACEAE) IN THE REPRODUCTIVE PHASE IN THREE LOCATIONS IN THE COLOMBIAN ANDES Acta biol.Colomb.
PEREZ MARTINEZ,Laura Victoria; MELGAREJO,Luz Marina.
Gulupa, Passiflora edulis Sims (Passifloraceae), is an important fruit due to its organoleptic and nutritional characteristics and its demand in the international market; however, very few studies have been conducted for studying its Ecophysiology. Until now, this crop has spread throughout the country through empirical knowledge without data that indicate the zones that are more suitable for its cultivation. For this reason, gas exchange, chlorophyll fluorescence (photosystem II operating efficiency and maximum quantum efficiency of photosystem II photochemistry) and leaf water potential were measured in three different locations of Cundinamarca department (Chia [2610 m a.s.l., 14 °C], Granada [2230 m a.s.l., 15 °C] and Tena [2090 m a.s.l., 17 °C]), whose...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chlorophyll fluorescence; Crop; Horticulture; Passion fruit; Photosynthesis; Plant physiology; Water.
Ano: 2015 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2015000100019
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Gherkin cultivation in saline medium using seeds treated with a biostimulant Agronomy
Souza Neta, Maria Lilia de; Oliveira, Francisco de Assis de; Torres, Salvador Barros; Souza, Antonia Adailha Torres; Silva, Dennis Darkyan Almeida da; Santos, Sandy Thomaz dos.
 The objective of this study was to evaluate the effects of a biostimulant on gherkin seeds, cultivar Liso de Calcutá, under conditions of salt stress. A split-plot experimental design with five replications was used; the main plot was represented by two levels of irrigation water salinity (0.5 and 3.5 dS m-1), and the subplot was composed of five biostimulant doses applied as a seed treatment (0, 5, 10, 15, and 20 mL kg-1). The following variables were evaluated: the number of leaves; number of branches; length of the largest branch; leaf, stem, fruit and total dry matter; number of fruits; average fruit weight; and fruit production. The values of all analyzed variables decreased with an increase in irrigation water salinity regardless of the biostimulant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cucumis anguria; Horticulture; Salt stress; Bioregulator.; Produção e Tecnologia de Sementes.
Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35216
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Gherkin cultivation in saline medium using seeds treated with a biostimulant Agronomy
Souza Neta, Maria Lilia de; Oliveira, Francisco de Assis de; Torres, Salvador Barros; Souza, Antonia Adailha Torres; Silva, Dennis Darkyan Almeida da; Santos, Sandy Thomaz dos.
 The objective of this study was to evaluate the effects of a biostimulant on gherkin seeds, cultivar Liso de Calcutá, under conditions of salt stress. A split-plot experimental design with five replications was used; the main plot was represented by two levels of irrigation water salinity (0.5 and 3.5 dS m-1), and the subplot was composed of five biostimulant doses applied as a seed treatment (0, 5, 10, 15, and 20 mL kg-1). The following variables were evaluated: the number of leaves; number of branches; length of the largest branch; leaf, stem, fruit and total dry matter; number of fruits; average fruit weight; and fruit production. The values of all analyzed variables decreased with an increase in irrigation water salinity regardless of the biostimulant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fitotecnia Cucumis anguria; Horticulture; Salt stress; Bioregulator. Produção e Tecnologia de Sementes.
Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35216
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A Closed-Type Irrigation System Performaces in the Plant House CIGR Journal
Dewi, Vita Ayu Kusuma; Setiawan, Budi Indra; Minasny, Budiman; Wasodo, Roh Santoso Budi; Liyantono, Liyantono.
Water application in the plant house is usually done by surface irrigation and manual micro-irrigation. Because of the conventional irrigation system’s inefficiency, water-saving irrigation has been developed. Smart or automated irrigation usually uses a microcontroller to maintain irrigation timing and soil moisture conditions. This automation is highly efficient in water application and can increase plant productivity. However, this system is costly and the irrigation components are not always available for smallholder farmers. Here we develop an automatic irrigation technology based on the capillarity principle that dramatically reduces the cost. This irrigation technology does not use any microcontroller device and the components can be easily...
Tipo: Info:eu-repo/semantics/article Palavras-chave: High productivity; Horticulture; Irrigation; Plant house; Water use efficiency.
Ano: 2020 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5981
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Effect of plant canopy shape and flowers on plant count accuracy using remote sensing imagery CIGR Journal
Leiva, Josue Nahun; Robbins, J.; Saraswat, D.; She, Y.; Ehsani, R..
Separate experiments were conducted to evaluate the effect of plant canopy shape and presence of flowers on counting accuracy of container-grown plants.  Images were taken at 12 m above the ground.  Two species of juniper (Juniperus chinensis L. ‘Sea Green’ and Juniperus horizontalis Moench ‘Plumosa Compacta’) were selected to evaluate plant shape and Coral Drift ® rose (Rosa sp. ‘Meidrifora’) was used to evaluate the presence of flowers on plant count.  Counting algorithms were trained using Feature Analyst (FA).  Total counting error, false positives and unidentified plants were reported. There was no difference between all variables measured when an algorithm trained with an image displaying regular or irregular plant canopy shape was applied to images...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agirculture; Horticulture; Remote sensing nursery plants; Vegetation; Inventory; Feature analyst.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3555
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Yield analysis of Physalis ixocarpa Brot. ex Hornem varieties under greenhouse and field conditions Ciência Rural
Ramos-López,Bernabé Ignacio; Ortiz-Hernández,Yolanda Donaji; Morales,Isidro.
ABSTRACT: Physalis ixocarpa (husk tomato) is traditionally cultivated in Mexico, and nowadays the yield is low. In this study, four cultivars of husk tomato were evaluated, under greenhouse and field conditions. It was carried out a split-plot experimental design in a 4x2 factorial arrangement. The large plot was the growth conditions and the small plot was the variety. The microclimate, soil and yield variables were recorded. In the field, the Integrated Photosynthetic Active Radiation (IPAR) was higher 12mol m-2 d-1 than in the greenhouse. The average temperature was slightly higher 1.18°C in the greenhouse and the average relative humidity was slightly higher 0.89% in the field. Plants grown in the greenhouse had lower negative values for the matric...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Horticulture; Husk tomato; Intensive production; Solanaceae; Yield.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001100401
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La acción colectiva rural y dinámica reticular de los actores sociales en el altiplano poblano. Un estudio de caso. Colegio de Postgraduados
Lugo Morín, Diosey Ramón.
Esta investigación tiene como objetivo estudiar la acción colectiva a través de redes sociales propiciadas por los actores sociales del sistema hortícola del municipio de Acatzingo como mecanismo que interviene en el acceso a la renta que genera el sistema e incide en la dinámica productiva de los pequeños productores hortícolas. El estudio analizó ampliamente al sistema productivo hortícola del municipio de Acatzingo y sus actores sociales. El análisis valoró la organización del sistema y las relaciones que establecen los actores a su interior. Las consideraciones previas muestran que los actores sociales establecen relaciones de negociación, cooperación, subordinación, confianza, parentesco y conflicto en una atmósfera de arreglos, intereses y...
Palavras-chave: Acción colectiva rural; Redes sociales; Actores sociales; Horticultura; Desarrollo Rural; Acatzingo; Rural collective action; Social networks; Social actors; Horticulture; Rural development; Doctorado; Estrategias para el Desarrollo Agrícola Regional; EDAR.
Ano: 2010 URL: http://hdl.handle.net/10521/195
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La acción colectiva rural y dinámica reticular de los actores sociales en el altiplano poblano. Un estudio de caso. Colegio de Postgraduados
Lugo Morín, Diosey Ramón.
Esta investigación tiene como objetivo estudiar la acción colectiva a través de redes sociales propiciadas por los actores sociales del sistema hortícola del municipio de Acatzingo como mecanismo que interviene en el acceso a la renta que genera el sistema e incide en la dinámica productiva de los pequeños productores hortícolas. El estudio analizó ampliamente al sistema productivo hortícola del municipio de Acatzingo y sus actores sociales. El análisis valoró la organización del sistema y las relaciones que establecen los actores a su interior. Las consideraciones previas muestran que los actores sociales establecen relaciones de negociación, cooperación, subordinación, confianza, parentesco y conflicto en una atmósfera de arreglos, intereses y...
Palavras-chave: Acción colectiva rural; Redes sociales; Actores sociales; Horticultura; Desarrollo Rural; Acatzingo; Rural collective action; Social networks; Social actors; Horticulture; Rural development; Doctorado; Estrategias para el Desarrollo Agrícola Regional; EDAR.
Ano: 2010 URL: http://hdl.handle.net/10521/195
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AGRONOMIC PERFORMANCE OF RADISH GENOTYPES UNDER DIFFERENT IRRIGATION DEPTHS REA
Cunha,Fernando F. da; Souza,Ivan P. de; Campos,Washington de O.; Andrade Júnior,Valter C. de; Magalhães,Thiago A..
ABSTRACT In radish production, the choice of proper genotypes and irrigation regime is of great importance to achieve success. In light of this, the current study aimed to evaluate the agronomic performance of a few radish genotypes under different irrigation strategies. The plants were grown in the city of Unaí - MG, in Brazil, under field conditions, and during two cycles, one of 40 days (from February 28 to April 8, 2015) and other of 51 days (from May 9 to June 28, 2015). The experimental design was a randomized block design in a split-plot arrangement with four replications. The treatments consisted of four irrigation strategies (50, 75, 100, and 125% of crop evapotranspiration - ETc) applied by a dripping irrigation system, while subplots consisted...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Horticulture; Irrigation management; Raphanus sativus.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000200182
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Spatial variability of yield and other parameters associated with pear trees REA
Konopatzki,Marcia R. S.; Souza,Eduardo G.; Nóbrega,Lúcia H. P.; Uribe-Opazo,Miguel A.; Suszek,Grazieli.
In the last few years, precision agriculture has become commonly used with many crops, particularly cereals, and there is also interest in precision horticulture. Pear is a seasonal fruit and well appreciated by Brazilian people, although it is mostly imported. Brazilian farmers are nowadays trying to increase pear production. Thus, this research aimed at mapping the yield of pear trees in order to study the spatial variability of yield as well as its comparison with spatial variability of soil and plant attributes. The experimental field had 146 pear trees, variety 'Pêra d'água', distributed on a 1.24 ha. Four harvests were performed according to the fruit ripening and from each tree; only the ripe fruits were harvested. In each harvest, all the fruits...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Precision agriculture; Thematic maps; Horticulture.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000200018
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Nonlinear regression and plot size to estimate green beans production Horticultura Brasileira
Lucio,Alessandro DC; Nunes,Luis F; Rego,Francisco.
ABSTRACT The objectives of this work were to adjust nonlinear regression models for the green beans production and to identify the plot size which provides the best explanation and adjustment to the models. The authors used two field and two protected environment (plastic tunnel) trials in the autumn-winter and spring-summer seasons. The logistic and von Bertalanffy models were adjusted for average weight of green beans accumulated after multiple harvests and with different plot sizes. The models presented similar estimates and the same parameters estimates in all the plot sizes. The logistic model provided estimates closest to the reality, showing the best description performance for the average weight of pods during the productive cycle. In the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phaseolus vulgaris; Growth models; Logistic model; Von Bertalanffy model; Horticulture.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362016000400507
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Nitrogen on growth and yield of lettuce plants grown under root confinement Horticultura Brasileira
Cardoso,Francieli L; Andriolo,Jerônimo L; Picio,Miriane Dal; Piccin,Marcieli; Souza,Jéssica M.
ABSTRACT: The objective of this research was to test the hypothesis that when lettuce plants grow under root confinement, development and yield is reduced and that such negative effects may be compensated by increasing nitrogen availability in the rooting media. The experiment was conducted between August 11st and September 23rd 2011. Lettuce transplants, cultivar Stella, bearing five leaves, were planted in pots using sand as substrate. Treatments were three root confinement levels and five N concentrations in the nutrient solution, in a 3x5 factorial randomized experimental design with four replications. Root confinements were simulated by pot sizes of 2.5 dm³ (no confinement, the control); 1.0 dm³ (moderate) and 0.4 dm³ (severe). Nitrogen concentrations...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lactuca sativa; Fertilization; Horticulture; Mineral nutrition..
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362015000400422
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Growth, yield, nutrient accumulation and export and thermal sum of Italian zucchini Horticultura Brasileira
Purquerio,Luis Felipe V; Mattar,Gabriel S; Duart,Adriana M; Moraes,Carolina C de; Araújo,Humberto S; Santos,Fabrício Franco dos.
ABSTRACT Studies on plant nutrition are essential for a correct fertilizer management, improving yield and quality of the product, and it also may contribute for an updating recommendation. The aim of this study was to evaluate growth, nutrient accumulation and export, thermal sum and yield of zucchini cultivar Corona F1. The experiment was carried out from August 8 to October 25, 2013, in Santo Antônio de Posse, São Paulo State. At the end of the research, 84 days after transplanting (DAT), we observed 95 cm average height with 36 leaves and 45.8 t ha-1 maximum yield. The nutrient accumulation, in g plant-1, was: N (14.2) > K (9.3) > Ca (8.0) > Mg (2.5) > S (1.2) > P (0.9) and in mg plant-1, Mn (49.3) > Fe (34.9) > Zn (19.6) > B...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cucurbita pepo; Growth; Plant nutrition; Horticulture; Sustainability.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000200221
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Baby leaf lettuce production in trays with reused and solarized substrate Horticultura Brasileira
Moraes,Lívia AS; Calori,Alex H; Factor,Thiago L; Patrício,Flávia RA; Ghini,Raquel; Abreu,Monica F; Purquerio,Luis FV.
ABSTRACT Concerning the baby leaf production in trays, substrate can be reused for a certain number of times depending on its chemical and physical characteristics, but populations of pathogens such as Pythium aphanidermatum and Rhizoctonia solani that can cause damping off of lettuce, can build up during the reuse of this substrate. Solar treatment in a solar collector can be an alternative for the disinfestation of these substrates. Thus, the objective of this research was to study the reuse of coconut fiber substrate and its solar treatment in solar collector on baby leaf lettuce production. The experimental design was randomized blocks, in a factorial scheme 4 (first-use substrate, reused once, reused twice and reused three times) x 2 (with and without...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lactuca sativa; Coconut fiber; Solar treatment device; Horticulture; Sustainability.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362016000400463
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Growth promotion and productivity of lettuce using Trichoderma spp. commercial strains Horticultura Brasileira
Pereira,Fabíola T; Oliveira,Jessica B de; Muniz,Paulo Henrique PC; Peixoto,Gustavo Henrique S; Guimarães,Roberli R; Carvalho,Daniel Diego C.
ABSTRACT The aim of this study was to evaluate four strains of Trichoderma spp. (T. harzianum IBLF 006 WP, T. harzianum IBLF 006 SC, T. harzianum ESALQ 1306 and T. asperellum URM 5911) for seedling growth promotion in laboratory and head lettuce yield in field conditions. The experiment was carried out in a completely randomized design with four treatments (strains): IBLF 006 WP, IBLF 006 SC, ESALQ 1306 and URM 5911 and a non-inoculated (without Trichoderma) control. Each treatment consisted of 200 seeds, arranged in four replicates. Lettuce seeds cv. Astra were treated with 2 mL Trichoderma suspension (2.5 x 108 conidia mL-1 per each 100 g seeds) and submitted to growth assay in laboratory up to 7 days after sowing. For field experiment, we opened...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Trichoderma harzianum; Trichoderma asperellum; Lactuca sativa; Biological control; Horticulture.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000100069
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10 dicas para montar hortas de base ecológica. Infoteca-e
SCHIEDECK, G.; SEIXAS, C. D. S..
Plantar espécies intercaladas. Usar plantas companheiras. Fazer rotaçao de culturas. Controlar formigas e lesmas. Manejar a vegetação espontânea. Usar plantas repelentes. Usar resíduos orgânicos. Observar as minhocas. Ter cuidado nas aplicações. Adaptar idéias.
Tipo: Folders Palavras-chave: Horticultura; Ecologia vegetal; Horticulture; Agroecology.
Ano: 2012 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/915989
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Utilização do búfalo como animal de trabalho no cultivo de hortaliças. Infoteca-e
MARTINEZ, G. B.; CARVALHO, L. O. D. de M.; CHENG, S. S.; NASCIMENTO, C. N. B. do.
Tipo: Folhetos Palavras-chave: Bubalino; Utilização; Brasil; Buffalo; Utilization; Vegetable; Draft animal; Bubalus Bubalis; Hortaliça; Horticultura; Tração Animal; Amazonia; Horticulture.
Ano: 1985 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/382781
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Produção de mudas e hortaliças com o uso da plasticultura e do pó de coco. Infoteca-e
NUNES, M. U. C..
Procurou-se oferecer uma sintese da técnica de produção de mudas de hortaliças visando a preservação do meio ambiente e a proteção da saúde do produtor. O uso de telado com cobertura plástica ao invés estufas é aconselhado em regiões de clima quente como o Nordeste.
Tipo: Folhetos Palavras-chave: Produção de mudas; Greenhouse crops; Cultural methos; Cultivation; Hortaliça; Plasticultura; Pratica Cultural; Horticulture; Seedling production; Vegetable growing.
Ano: 2000 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/371083
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Influência de uma estufa coberta de polietileno transparente no crescimento de alface. Infoteca-e
SEGOVIA, J. F. O.; ANDRIOLO, J. L.; BURIOL, G. A.; SCHNEIDER, F. M..
Este trabalho teve como objetivo avaliar o desempenho de três cultivares de alface cultivadas em ambiente natural e no interior de estufa coberta com polietileno transparente, durante o inverno.
Tipo: Folhetos Palavras-chave: Lettuces; Alface; Hortaliça; Lactuca Sativa; Horticulture.
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/344625
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Medidas integradas de cultivo de hortaliças em sistema de produção sustentável. Infoteca-e
NUNES, M. U. C.; ANGELO, P. C. da S.; ANDRADE, L. N. T..
Escolha do local; Preparo do solo e adubação; Cultivares e sementes; Produção de mudas; Manejo da cultura; Barreira viva; Rotação de culturas; Consorciação; Cobertura do solo.
Tipo: Folhetos Palavras-chave: Sustainability; Alternative agriculture; Cultural methods; Cultivation; Agricultura Alternativa; Agricultura Sustentável; Hortaliça; Pratica Cultural; Produção de Alimentos; Rotação de Cultura; Food production; Horticulture.
Ano: 2000 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/360225
Registros recuperados: 69
Primeira ... 1234 ... Última
 

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