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Showing 1 to 17 of 17 for “"Lactuca sativa L."”.
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Inheritance of Resistance to Tomato Spotted Wilt Virus in Lettuce (Lactuca Sativa L.)
Tomato Spotted Wilt Virus (TSWV), a thrips transmitted virus disease with a wide host range, has become a major limiting factor in lettuce production in Hawaii. Symptoms of this disease on lettuce are necrotic spotting of young leaves, stunting, wilting, and death of the plant. The large host range …
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Physiological Studies on Nitrate Absorption and Accumulation in Lettuce (Lactuca Sativa L.) Genotypes
Made available in DSpace on 2014-12-16T20:45:20Z (GMT). No. of bitstreams: 1 8908684.pdf: 4598257 bytes, checksum: 01a6e2bf3309b072975d1d75575f467c (MD5) Previous issue date: 1988
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Obcy gatunkowo pyłek i czynnik chemiczny w indukcji rozwoju zarodków haploidalnych u Lactuca sativa L.
Sałata siewna (Lactuca sativa) jest popularną oraz cenną z ekonomicznego punktu widzenia rośliną warzywną. Głównym celem tej pracy było opracowanie efektywnej metody haploidyzacji Lactuca sativa, która byłaby użyteczna dla hodowców sałaty siewnej. Krzyżowanie oddalone oraz chemiczną indukcję …
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Contaminação, crescimento e inativação de microrganismos na cadeia de produção de alface (Lactuca sativa L.) variedade Vitória de Santo Antão
Foi analisada a cadeia de produção da alface, cultivar Vitória de Santo Antão, do campo à mesa, sob as diretrizes do sistema Análise de Perigo se Pontos Críticos de Controle(APPCC)e do sistema de Análise de Risco Microbiológico. Para este estudo realizaram-se as etapas: caracterização da superfície …
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Investigating optimum wavelength(s) for growth of Lactuca sativa, L. using tunable LED sources and developing thin-film filters for glass greenhouses
… on a sample plant species of lettuce (Lactuca sativa, L.). Whilst lettuce is often grown in hydroponic systems, the current research is conducted in stand-alone pots with hand watering, due to the requirements of health and safety and available resources. The experiments were designed …
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Nitrate accumulation in hydroponically-grown lettuce cultivars and relationship to nitrogen supply
… and reduction in hydroponically-grown lettuce (Lactuca sativa L.), and its relationship to various aspects of N supply, including solution NO$\sb{3-}$ concentration, the nitrate:ammonium solution ratio, and the interaction between solution flow rate and NO$\sb{3-}$ fertilization level.
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Influencia de la aplicación de bocashi y lombriabono en el rendimiento de calabacin (Cucurbita pepo L.), espinaca (Spinacia oleracea L.), lechuga (Lactuca sativa L.) y remolacha (Beta vulgaris L.), bajo el método de cultivo bíointensivo, San Ignacio, Chalatenango.
… L.), espinaca (Spinacia oleracea L.), lechuga (Lactuca sativa L.), remolacha (Beta vulgaris L.), manejándolos con el método de cultivo biointensivo, que es una forma de agricultura orgánica a pequeña escala, cuyo propósito es desarrollar una agricultura integral y armónica con la naturaleza, en …
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The response of 'Buttercrunch' lettuce to applications of cyanobacterium (Nostoc muscorum) in nutrient solution
… of nitrogen fertilizer on the growth of lettuce (Lactuca sativa L. cv. Buttercrunch). Lettuce yields increased with increased rates of N. Yields were significantly greater in treatments containing 165 ppm N with N. muscorum culture added (at the rate of 33.3% by volume) than in treatments …
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Dynamic Environmental Control of a Vertical Farm for Lettuce Production
… and dry shoot masses of red colored lettuce (Lactuca sativa L. cv. ‘Rouxaï’), along with light use efficiency and electrical use efficiency, were used to evaluate the proposed dynamic light control strategies for growth, while anthocyanin concentration, tipburn severity score, and crop quality …
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The effect of fast pyrolysis biochar made from poultry litter on soil properties and plant growth
… loam soil and a silt loam soil. First, lettuce (Lactuca sativa L) seeds were germinated in the greenhouse across biochar incorporation rates from 0 to 100%, and secondly a trial was conducted in which green peppers (capsicum annum L) were grown in soils with up to 5% biochar by weight. Elemental …
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THE GENETICS OF ESTERASE ISOZYMES IN LETTUCE CULTIVARS.
Lettuce, in its cultivated form (Lactuca sativa L.), is a crop of economic importance with several characteristics which make it well suited for biochemical and genetic studies. Biochemical traits such as proteins and enzymes have been studied extensively in many plant species and constitute an …
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Procesamiento automático de imágenes en la nube como ayuda a la gestión del riego y la supervisión del cultivo. Aplicación en cultivos hortícolas
… de esta herramienta en cultivares de lechuga (Lactuca Sativa L.) de la variedad “Little Gem”, demostrando una excelente precisión en el método mixto propuesto. Por otro lado, el servidor que ejecuta esta aplicación es responsable de la configuración de estos módulos. Además, el servidor ejecuta …
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Sustainable production of baby leaf lettuce and spinach through the use of compost and its extracts
[SPA] Esta tesis doctoral se presenta bajo la modalidad de compendio de publicaciones. En los últimos años se ha producido un incremento de residuos orgánicos procedentes de la industria agroalimentaria, los cuales, generan una serie de problemas medioambientales y económicos. Estos residuos …
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Effects of aeration of the nutrient solution and application of PGPR on the production and quality of baby leaf vegetables grown in floating system
… life as a fresh-cut product of a red lettuce (Lactuca sativa L.) showed that the specific leaf area was lowest in winter. Yield was affected only by the growing cycle, showing the highest value in autumn. Lack of aeration produced shorter total root length but did not affect the root diameter. …
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INNOVATIVE APPROACHES TO PLANT PROTECTION AND PRODUCE SAFETY THROUGH HIGH-PRECISION PLANT MANAGEMENT SYSTEMS
… detection. Similarly, studies on lettuce (Lactuca sativa L.) assessed the antifungal potential of various UV-C wavelengths (254 nm, 222 nm, and 250–280 nm LEDs) against Botrytis cinerea, the agent of grey mold. Conidial germination was completely inhibited by UV-C doses above 0.87 kJ/m2 …
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Led lighting for indoor cultivation of leafy vegetables and herbs
… and three leafy vegetable crops (lettuce, Lactuca sativa; chicory, Chicorium intybus; and rocket, Eruca sativa) were tested in light insulated compartments in a controlled environment climate chamber (T=24°C, 450 ppm CO2) for their adaptability to different light managements, including …