OALib Journal期刊

ISSN: 2333-9721

費用:99美元

投稿

時間不限

2027 ( 1 )

2020 ( 121 )

2019 ( 234 )

2018 ( 282 )

自定義范圍…

匹配條件: “Gilda; Carrasco C” ,找到相關結果約221408條。
列表顯示的所有文章,均可免費獲取
第1頁/共221408條
每頁顯示
Efecto de Cuatro Niveles de Sombreamiento sobre la Calidad de Vara y Bulbo de Dos Cultivares de Lilium (Lilium spp.)
Schiappacasse C,Flavia; Carrasco S,Gilda; Carrasco C,Fabiola;
Agricultura Técnica , 2006, DOI: 10.4067/S0365-28072006000400003
Abstract: lilium spp. hybrids are important export products among the chilean cut flower exports. field plantations are often shaded to reduce temperature; however, the best shading percentage to attain a good quality cut flower and also a good quality bulb is unknown. this study assessed the cut flower quality of two lilium spp. hybrid cultivars, cv. dreamland belonging to the asiatic group and cv. alhambra of the oriental group, cultivated in the vii region (35°17? s lat, 71°13? w long) under shading nets of 35, 50, 65, and 80% shading, and a control treatment without shade. the perimeter and weight of the bulbs were recorded at one, four and eight weeks after flower harvest. in both cultivars the plants grown under 65 and 80% shade were significantly taller, with no differences in both stem diameter and number of florets per stem among all the treatments. bulb weight in both cultivars was higher in the control and 35% shade treatments. the bulb perimeter of cv. dreamland was higher in the control and 35% shade treatments, and showed higher values at each subsequent evaluation. in cv. alhambra, the perimeter of the bulbs of the different treatments was similar in all treatments in the last evaluation performed eight weeks after flower harvest. in double purpose crops, attaining good quality in both cut flowers and bulbs are contradictory; in this case it is proposed the use of 50% shade.
Efecto de Cuatro Niveles de Sombreamiento Sobre la Calidad de VAra Floral y Cormo de Liatris (Liatris spicata)
Schiappacasse C,Flavia; Carrasco S,Gilda; Carrasco C,Fabiola;
Agricultura Técnica , 2007, DOI: 10.4067/S0365-28072007000100013
Abstract: liatris spicata (l.) willd. was introduced to chile as a cut flower crop more than a decade ago. it is commonly field-planted in consecutive plantings during spring and summer. the propagation structure is a corm that is reused in subsequent plantings. other field crops are shaded to reduce the temperature, but in liatris, the effect of shading under our conditions on both cut flowers and corms is unknown. the present study assessed the cut flower quality of l. spicata cultivated in the vii region (35°33? s lat, 71°13? w long), chile, utilizing nets providing 35, 50, 65 and 80% shade, plus a control treatment without shade. as well, the weight of the corms was recorded one, four and eight weeks after flower harvest. the effect of shade on flower quality was evident at harvest time; the plants that grew at full sun had longer spikes and greater stem diameters. the weight of corms at the third evaluation was greatest in the control treatment, and at the first evaluation these values were lower than in the last evaluation. as the shade negatively affected both flower quality and corm weight, it was concluded that shading nets should not be recommended under the experimental conditions.
Efecto de Cuatro Niveles de Sombreamiento sobre la Calidad de Vara y Bulbo de Dos Cultivares de Lilium (Lilium spp.) Effect of Four Shading Levels on Flower Stem and Bulb Quality of Two Lilies (Lilium spp.) Cultivars
Flavia Schiappacasse C,Gilda Carrasco S,Fabiola Carrasco C
Agricultura Técnica , 2006,
Abstract: Los híbridos de Lilium spp. son importantes productos de exportación de la floricultura chilena. En cultivos al aire libre se suele sombrear para reducir la temperatura, sin embargo se desconoce el grado de sombreamiento adecuado para lograr buena calidad de varas florales y de bulbos. El presente estudio evaluó la calidad de las varas florales de dos cultivares híbridos de Lilium spp., el cv. Dreamland de tipo asiático y el cv. Alhambra de tipo oriental, cultivados en la VII Región (35°17’ lat. Sur, 71°17’ long. Oeste) bajo diferentes niveles de sombreamiento, utilizando mallas de 35; 50; 65; y 80% de sombra y un testigo sin malla. Además se midió el perímetro y peso de los bulbos al cabo de una, cuatro y ocho semanas después de la cosecha de flores. En ambos cultivares las plantas cultivadas bajo mallas de 65 y 80% de sombra fueron significativamente más altas, sin diferencias significativas en diámetro y cantidad de botones por vara entre los tratamientos. El peso de bulbos en ambos cultivares fue superior en los tratamientos control y 35% de sombra. El perímetro de los bulbos del cv. Dreamland presentó valores superiores en el tratamiento testigo y bajo malla de 35% de sombra. En el cv. Alhambra el perímetro de los bulbos de los distintos tratamientos fue similar en la evaluación realizada a las ocho semanas después de la cosecha de las flores. En cultivos de doble propósito, el objetivo calidad de la flor se contrapone con perímetro del bulbo, en este caso se propone utilizar mallas de 50% de sombra. Lilium spp. hybrids are important export products among the Chilean cut flower exports. Field plantations are often shaded to reduce temperature; however, the best shading percentage to attain a good quality cut flower and also a good quality bulb is unknown. This study assessed the cut flower quality of two Lilium spp. hybrid cultivars, cv. Dreamland belonging to the Asiatic group and cv. Alhambra of the Oriental group, cultivated in the VII Region (35°17’ S lat, 71°13’ W long) under shading nets of 35, 50, 65, and 80% shading, and a control treatment without shade. The perimeter and weight of the bulbs were recorded at one, four and eight weeks after flower harvest. In both cultivars the plants grown under 65 and 80% shade were significantly taller, with no differences in both stem diameter and number of florets per stem among all the treatments. Bulb weight in both cultivars was higher in the control and 35% shade treatments. The bulb perimeter of cv. Dreamland was higher in the control and 35% shade treatments, and showed higher values at each subs
Efecto de Cuatro Niveles de Sombreamiento Sobre la Calidad de VAra Floral y Cormo de Liatris (Liatris spicata) Effect of Four Shading Levels on Flower Stem and Corm Quality of Liatris (Liatris spicata)
Flavia Schiappacasse C,Gilda Carrasco S,Fabiola Carrasco C
Agricultura Técnica , 2007,
Abstract: El cultivo de Liatris spicata (L.) Willd. para flor cortada fue introducido en Chile hace más de una década. Se suele plantar en forma escalonada al aire libre en primavera y verano. Su estructura de propagación corresponde a un cormo, el cual se reutiliza en la siguiente plantación. Otros cultivos al aire libre se sombrean para reducir la temperatura, pero en liatris se desconoce el efecto del sombreamiento en nuestras condiciones, tanto para la vara floral como para el cormo. El presente estudio evaluó la calidad de las varas florales de L. spicata, cultivadas en la VII Región (35°33’ lat. Sur, 71°13’ long. Oeste) bajo diferentes niveles de sombra, utilizando mallas de 35; 50; 65 y 80% de sombra y un testigo sin sombra. Además se midió el peso de los cormos al cabo de una, cuatro y ocho semanas después de la cosecha de flores. El efecto de la sombra sobre la calidad de las varas se manifestó al momento de cosecha, encontrándose una mayor longitud de espiga y diámetro de varas en las plantas que crecieron a pleno sol. El peso de cormos en la tercera evaluación fue superior en el tratamiento testigo, y en la primera evaluación los valores fueron inferiores a los de la última evaluación. La sombra afectó negativamente la calidad de flores y el peso del cormo, por lo que se concluye que en las condiciones del presente experimento no se recomienda el uso de mallas sombreadoras para su cultivo. Liatris spicata (L.) Willd. was introduced to Chile as a cut flower crop more than a decade ago. It is commonly field-planted in consecutive plantings during spring and summer. The propagation structure is a corm that is reused in subsequent plantings. Other field crops are shaded to reduce the temperature, but in liatris, the effect of shading under our conditions on both cut flowers and corms is unknown. The present study assessed the cut flower quality of L. spicata cultivated in the VII Region (35°33’ S lat, 71°13’ W long), Chile, utilizing nets providing 35, 50, 65 and 80% shade, plus a control treatment without shade. As well, the weight of the corms was recorded one, four and eight weeks after flower harvest. The effect of shade on flower quality was evident at harvest time; the plants that grew at full sun had longer spikes and greater stem diameters. The weight of corms at the third evaluation was greatest in the control treatment, and at the first evaluation these values were lower than in the last evaluation. As the shade negatively affected both flower quality and corm weight, it was concluded that shading nets should not be recommended under the experime
Green Chemistry in Protected Horticulture: The Use of Peroxyacetic Acid as a Sustainable Strategy
Gilda Carrasco,Miguel Urrestarazu
International Journal of Molecular Sciences , 2010, DOI: 10.3390/ijms11051999
Abstract: Global reduction of chemical deposition into the environment is necessary. In protected horticulture, different strategies with biodegradable products are used to control pathogens. This review presents the available tools, especially for the management of protected horticultural species, including vegetables and ornamental plants. An analysis of the potential for degradable products that control pathogens and also encourage other productive factors, such as oxygen in the root system, is presented. Biosecurity in fertigation management of protected horticulture is conducted by using peroxyacetic acid mixtures that serve three basic principles: first, the manufacture of these products does not involve polluting processes; second, they have the same function as other chemicals, and third, after use and management there is no toxic residue left in the environment. The sustainability of protected horticulture depends on the development and introduction of technologies for implementation in the field.
EFECTO ANTIOXIDANTE DE FRUTAS Y HORTALIZAS DE LA ZONA CENTRAL DE CHILE
Palomo G,Iván; Gutiérrez C,Margarita; Astudillo S,Luis; Rivera S,Carolina; Torres U,Constanza; Guzmán J,Luis; Moore-Carrasco,Rodrigo; Carrasco S,Gilda; Alarcón L,Marcelo;
Revista chilena de nutrición , 2009, DOI: 10.4067/S0717-75182009000200007
Abstract: the reactive oxygen species (ero) cause cell damage that can be expressed as a disease, including cardiovascular disease (cvd) and other non transmissible chronic diseases. the human body has antioxidant systems, some come from the diet, especially fruits and vegetables, and others are generated by the same organism as an endogenous way. the aim of this study was to determine the in vitro antioxidant capacity of some fruits and vegetables that are consumed in the maule region, chile. eleven species of fruits and 16 of vegetables used in the study were obtained at the regional center of fruits and vegetables of talca during the harvest season, and different aqueous and methanol extract were obtained. the antioxidant activity was determined by purple discoloration of the radical 2 ?2-diphenyl-l-picryl hidrazilo hydrated (dpph). in general the antioxidant activity was slightly higher in fruits (70 ?%; 87,7-54?%) than in vegetables (54,7%; 44^-79,7%) (p < 0.003) and it was dependent on the concentration of the extract. in the tests at 1000 jiglm, most fruits showed a higher percentage of discoloration over to 60%; those that showed higher antioxidant activity were raspberry, strawberry and kiwi. among vegetables, those showing higher antioxidant activity were tomato, followed by melon pear, red beet, melon (type tuna), sweet pepper and watermelon. the antioxidant activity observed in most fruits and vegetables could be assessed as a scientific argument to make known in promotional campaigns in national consumption and the horticultural products exports.
CONTENIDO DE NITRATOS EN LECHUGAS CULTIVADAS EN SISTEMAS HIDROPóNICOS
Carrasco,Gilda; Tapia,Jaime; Urrestarazu,Miguel;
Idesia (Arica) , 2006, DOI: 10.4067/S0718-34292006000100005
Abstract: the nitrate content in leafy vegetables grown in hydroponic systems was studied. high levels of nitrate may be hazardous to human health. the european commission indicates that lettuce plants grown in a greenhouse in winter should contain a nitrate concentration below 4,500 mg/kg (fresh weight). this study determined the nitrate contents of lettuces grown by float and nutrient film technique (nft) in hydroponic systems, in greenhouse without a heating system at winter time. four trials were carried out in talca, chile (south hemisphere) from may to september. three cultivars of type butterhead lettuces (lactuca sativa l. var. capitata): ?loreto?, ?floresta? and ?esmeralda? were evaluated. in the float system, the leafy nitrate content fluctuated between 1,344 and 3,839 mg/ kg and from 1,754 to 2,157 mg/kg at beginning and end of winter, respectively. the nitrate contents in lettuces grown in nft, fluctuated from 2,552 to 2,818 mg/kg and between 2,676 to 3,100 mg/kg at beginning and end of winter time, respectively. neither of lettuce cultivars surpassed the maximum nitrate content stipulated by the european commission, nor were there consistent differences among them.
EFECTO DE LA CONDUCTIVIDAD ELéCTRICA DE LA SOLUCIóN NUTRITIVA SOBRE EL RENDIMIENTO Y CONTENIDO DE ACEITE ESENCIAL EN ALBAHACA CULTIVADA EN NFT
Carrasco,Gilda; Ramírez,Patricia; Vogel,Hermine;
Idesia (Arica) , 2007, DOI: 10.4067/S0718-34292007000200007
Abstract: basil (ocimum basilicum) is an aromatic plant commonly used for seasoning. the effect of different solutions in nutrient film technique (nft) was studied to avoid microbial contamination and to offer basil from culture in a cold greenhouse during the winter months. different electrical conductivities of nutrient solutions were applied between october and january in talca, chile. the treatments consisted of incremental electrical conductivities (ec) of the nutrient solutions with 1.5, 3.0 and 4.5 ds/m in a randomized block design with three replicates. basil plants grown at 1.5 ds/m of nutrient solution showed a higher total fresh matter (110.33 g/ plant), root fresh matter (29.13 g/plant) and essential oil yield(0.4 ml/m2), whereas the essential oil concentration was similar for all treatments.
CONTENIDO DE NITRATOS EN LECHUGAS CULTIVADAS EN SISTEMAS HIDROPóNICOS NITRATE CONTENT IN LETTUCES GROWN IN HYDROPONIC SYSTEMS
Gilda Carrasco,Jaime Tapia,Miguel Urrestarazu
IDESIA , 2006,
Abstract: Se estudió el contenido de nitrato en lechugas cultivadas en sistemas hidropónicos. Altos niveles de nitrato pueden ser da inos a la salud humana. La Comisión Europea indica que las plantas de lechuga cultivadas en invernadero en período invernal deberían contener una concentración de nitrato foliar menor a 4.500 mg/kg (peso fresco). En este estudio se determinaron los contenidos de nitrato de lechugas cultivadas en los sistemas hidropónicos de mesa flotante y nutrient film technique (NFT), en invernadero no calefaccionado y en invierno. Cuatro experimentos se realizaron en Talca, Chile, en período invernal (mayo a septiembre). Tres cultivares de lechuga tipo Espa ola (Lactuca sativa L. var. capitata) fueron evaluados: “Loreto”, “Floresta” y “Esmeralda”. En el sistema flotante, el contenido de nitrato foliar fluctuó entre 1.344 y 3.839 mg/kg y desde 1.754 a 2.157 mg/kg a inicios y término del período invernal, respectivamente. Los contenidos de nitrato en cultivares de lechuga cultivados en el sistema NFT fluctuaron desde 2.552 a 2.818 mg/kg y entre 2.676 a 3.100 mg/kg a inicios y fin del invierno, respectivamente. Ninguno de los cultivares de lechuga sobrepasó el contenido máximo estipulado por la Comisión Europea y tampoco existieron diferencias consistentes entre ellas. The nitrate content in leafy vegetables grown in hydroponic systems was studied. High levels of nitrate may be hazardous to human health. The European Commission indicates that lettuce plants grown in a greenhouse in winter should contain a nitrate concentration below 4,500 mg/kg (fresh weight). This study determined the nitrate contents of lettuces grown by float and nutrient film technique (NFT) in hydroponic systems, in greenhouse without a heating system at winter time. Four trials were carried out in Talca, Chile (south hemisphere) from May to September. Three cultivars of type butterhead lettuces (Lactuca sativa L. var. capitata): “Loreto”, “Floresta” and “Esmeralda” were evaluated. In the float system, the leafy nitrate content fluctuated between 1,344 and 3,839 mg/ kg and from 1,754 to 2,157 mg/kg at beginning and end of winter, respectively. The nitrate contents in lettuces grown in NFT, fluctuated from 2,552 to 2,818 mg/kg and between 2,676 to 3,100 mg/kg at beginning and end of winter time, respectively. Neither of lettuce cultivars surpassed the maximum nitrate content stipulated by the European Commission, nor were there consistent differences among them.
EFECTO DE LA CONDUCTIVIDAD ELéCTRICA DE LA SOLUCIóN NUTRITIVA SOBRE EL RENDIMIENTO Y CONTENIDO DE ACEITE ESENCIAL EN ALBAHACA CULTIVADA EN NFT EFFECT OF THE ELECTRICAL CONDUCTIVITY OF THE NUTRIENT SOLUTION ON YIELD AND ESSENTIAL OIL IN BASIL GROWN BY NFT
Gilda Carrasco,Patricia Ramírez,Hermine Vogel
IDESIA , 2007,
Abstract: La albahaca (Ocimum basilicum) es una planta aromática ampliamente usada para condimentar diversos platos. La falta de esta hierba fresca en los mercados durante la época de invierno y la necesidad de contar con plantas libres de contaminación microbiana impulsaron el presente estudio. Para ello se evaluó el efecto de diferentes conductividades eléctricas de la solución nutritiva en plantas cultivadas en el sistema hidropónico Nutrient Film Technique (NFT) en invernadero no calefaccionado entre los meses de octubre a enero en Talca, Chile. Las plantas se cultivaron en un dise o experimental con bloques completos al azar en soluciones nutritivas con conductividades eléctricas (CE) crecientes de 1,5, 3,0 y 4,5 dS/m. Las plantas de albahaca presentaron un comportamiento favorable en las variables materia fresca total, materia fresca radical y rendimiento de aceite esencial al ser tratadas con la solución nutritiva de CE 1,5 dS/m, mientras que la concentración de aceite esencial no varió con los diferentes tratamientos. Los valores medios obtenidos para la materia fresca fluctuaron entre 110,33 g/planta (1,5 dS/m) y de 78,62 g/planta (CE de 4,5 dS/m). La materia fresca radical alcanzó un valor máximo de 29,13 g/planta (CE de 1,5 dS/m). Asimismo, el tratamiento de 1,5 dS/m obtuvo el doble de rendimiento de aceite esencial que el tratamiento 4,5 dS/m con 0,4 ml/m2. Basil (Ocimum basilicum) is an aromatic plant commonly used for seasoning. The effect of different solutions in Nutrient Film Technique (NFT) was studied to avoid microbial contamination and to offer basil from culture in a cold greenhouse during the winter months. Different electrical conductivities of nutrient solutions were applied between October and January in Talca, Chile. The treatments consisted of incremental electrical conductivities (EC) of the nutrient solutions with 1.5, 3.0 and 4.5 dS/m in a randomized block design with three replicates. Basil plants grown at 1.5 dS/m of nutrient solution showed a higher total fresh matter (110.33 g/ plant), root fresh matter (29.13 g/plant) and essential oil yield(0.4 ml/m2), whereas the essential oil concentration was similar for all treatments.
第1頁/共221408條
每頁顯示


Home
Copyright ? 2008-2017 Open Access Library. All rights reserved.

久草在现在线中文字幕