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Showing 1 to 10 of 10 for “"Lettuce (Lactuca sativa L.)"”.
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Inheritance of Resistance to Tomato Spotted Wilt Virus in Lettuce (Lactuca Sativa L.)
… 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 of this disease has made it difficult to control. Genetic resistance might work, …
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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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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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The response of 'Buttercrunch' lettuce to applications of cyanobacterium (Nostoc muscorum) in nutrient solution
… rates 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
… Fresh 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 …
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The effect of fast pyrolysis biochar made from poultry litter on soil properties and plant growth
… a sandy 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. …
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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
… of the experiment) 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 …
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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
… different species (purslane, watercress and lettuce). The study of three levels of aeration of the nutrient solution on the growth and quality of two cultivars of purslane (Portulaca oleracea L.) over four crop cycles showed that purslane exhibited little sensitivity to oxygen depletion in …
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INNOVATIVE APPROACHES TO PLANT PROTECTION AND PRODUCE SAFETY THROUGH HIGH-PRECISION PLANT MANAGEMENT SYSTEMS
… in economically relevant crops such as lettuce, cucumber, tomato, bell pepper, and wild rocket, assessing their effectiveness against fungal and viral pathogens, as well as their impact on plant physiology and microbial community dynamics. In the first study, six bacterial strains were …
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Led lighting for indoor cultivation of leafy vegetables and herbs
… basilicum) 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, …