COMMENTS

  1. Growth and Yield of Hydroponic Lettuce as Influenced by Different Growing Substrates

    Growth and physiological parameters of lettuce were measured in this experiment. The maximum number of leaves per plant (21.44) and the highest fresh weight (92.49 g plant-1) were recorded from M1 ...

  2. PDF Controlled Environment Production of Romaine Lettuce (Lactuca sativa

    thesis was to determine the effects of environmental conditions and horticultural management strategies on romaine lettuce grown hydroponically in a controlled environment, in order to optimize yield, morphological and nutritional outcomes. Controlled Environment Agriculture Overview

  3. Evaluation of Lettuce Growth, Yield, and Economic Viability Grown

    Production of safe food in the densely populated areas of the developing countries is the most challenging issue due to the speedy urbanization, fragile food transportation facilities, and reduced farmlands. Given this background, a study was conducted to evaluate the agronomic properties and economic viability of lettuce grown vertically in the wall of building in Dhaka city, Bangladesh. Two ...

  4. (PDF) Effects of different growth media and planting densities on

    Key words : Growth medium, lettuce, planting density, soilless culture INTRODUCTION Lettuce (Lactuca sativa) is one among the most consumed vegetables across the world. China remains the top producer with 9,189,523.81 tonnes of lettuce in the year 2015 (FAO, 2015). Lettuce is a widely consumed vegetable in Europe and North America.

  5. PDF Improving romaine lettuce production in greenhouse hydroponic systems

    Six Romaine lettuce cultivars and tipburn sensitive 'Bambi' lettuce were grown in the greenhouse Nutrient Film Technique system. Size index was measured at 7 DAT, 14DAT, 21DAT and 30 DAT. Head fresh weight and dry weight were measured at 30DAT. Chlorophyll content, tipburn and bolting incidence were recorded.

  6. Micronutrient Concentration Effects on Lettuce Growth and

    This thesis combines previous literature and research that looks at the effects of nutrient solution management and Pythium root rot disease on hydroponic lettuce. A series of preliminary studies were conducted to determine the correct Pythium species and strain, environmental parameters, and dosing methods in order to induce disease in ...

  7. PDF Lettuce

    Lettuce (Lactuca sativa L.) is a major fresh vegetable and its leaves are commonly found in salad mixtures and sandwiches. In some eastern countries like China and Egypt, stems instead of leaves of lettuce are consumed, either cooked, raw, pickled, dried, or as a sauce.

  8. Growth and Antioxidant Responses of Lettuce

    Lettuce (Lactuca sativa L.) belongs to the Asteraceae family and is rich in fiber, vitamins, minerals, and phenolic compounds [].In 2019, lettuce production reached 29,134,653 tons in the world from which about 547,590 tons were produced in Iran [].Considering the important and valuable nutritional role of lettuce due to its daily consumption and, on the other hand, the excessive application ...

  9. The effects of different levels of fertilizers applied to lettuce

    The study was conducted from November 15, 2019, to January 10, 2020, at the Research and Development Area, Central Philippine University, Jaro, Iloilo City. This study aimed to determine the effects of different levels of fertilizers on the growth and yield of lettuce inoculated with mycorrhizal inoculum. The inoculum is a soil-based biofertilizer composed of dried roots that contain vesicular ...

  10. PDF Growth and Yield of Lettuce (Lactuca sativa L.) as Influenced ...

    about by CNS (inorganic) for almost all parameters, except; for root length and volume of lettuce. The yield achieved by 300 and 600 grams of GC is twice higher than that of CNS. Keywords - Guano char, Lettuce, Residual Effect, Pot experiment INTRODUCTION Lettuce is commonly known as lechugas which is native to Southern Europe and Western Asia.

  11. Full article: Impact of organic fertilisation on lettuce biomass

    Lettuce biomass production differences were more marked between the first and third crop cycles. Repeated OWP inputs at each lettuce crop cycle induced a significant increase in biomass production between the first and third cycle in arenosols (Ar40 and Ar0), except for the SS-150 treatment in Ar40 soil (p = 0.132) (Figure 2). For the T100 ...

  12. (PDF) Growth and Yield of Lettuce (Lactuca Sativa L.) Influenced As

    PDF | On Jun 1, 2017, M. R. Hasan and others published Growth and Yield of Lettuce (Lactuca Sativa L.) Influenced As Nitrogen Fertilizer and Plant Spacing | Find, read and cite all the research ...

  13. Horticulturae

    Organic fresh products are appreciated and are gaining a good reputation regarding human health and environmental concerns. Despite the fact that hydroponics are commonly used in vegetable production, growers are looking for sustainable cultivation systems. Therefore, the objective of this study was to investigate the effect of using an organic-based nutrient solution (NS) derived from fish ...

  14. PDF Drip fertigation enhances the growth of hydroponic lettuce (Lactuca

    continuoussupplyofnutrientwatertotherootsurface.Itallowsnu-trientplacementdirectlyintotheplantrootzone(Singandhupeetal., 2003;Jatetal.,2011 ...

  15. PDF Thesis Evaluation of The Effectiveness of Supplemental Lights Vs No

    environments and govern nutritional values. First, this thesis proposal addressed the historical factors of greenhouse lettuce and food production. Second, the proposal examined the research findings of studies and several theories that relate to the cultivation of mineral rich lettuce in a controlled greenhouse horticulture environment.

  16. Growth studies with lettuce : a thesis presented in partial fulfilment

    Growth studies were made in the field using two cultivars of head lettuce, Webbs Wonderful (a crisphead type) and Cobham Green (a butterhead type). In a fertiliser and density experiment using a systematic spacing design superimposed on a rotatable fertilizer design evidence is presented to suggest that the 'normal' reciprocal yield-density model W -1 = Aρ + B (when W is the mean plant weight ...

  17. PDF Lettuce Grown in the Open Field and Protected Culture Applied with

    FPJs on the growth and yield of lettuce. Apahidean et. al. (2012), in their studies upon a lettuce sortiment grown in protected culture, found the variants of rosette lettuce had a diameter over 30 cm, which is very good to quality standards. Crisp lettuces had yields between 38-40t/ha, and head lettuces 45-51 t/ha.

  18. (PDF) Lettuce production according to different sources of organic

    Lettuce seedlings were planted in 50×16×18 cm balcony type plastic pots on 2 December 2019, and 0, 5, 10 and 20 kg da⁻¹ doses of nitrogen and 0, 200 and 400 g da⁻¹ doses of zinc were ...

  19. Thesis Title: Examples and Suggestions from a PhD Grad

    Master's thesis title examples. Creation of an autonomous impulse response measurement system for rooms and transducers with different methods. Guy-Bart Stan, 2000 - Bioengineering - Imperial Professor - direct link to Guy-Bart's bioengineering academic CV. Segmentation of Nerve Bundles and Ganglia in Spine MRI using Particle Filters.

  20. LETTUCE THESIS FINAL EDIT.pdf

    5 It can be harvested as early as 30-40 days after planting. It should harvest early in the morning (between 6am- 9am) or late afternoon to avoid withering of plants (Dean 2016). According to Dean (2016) lettuce can be planted in a 75- 100 cm width plot. It should be planted 30 cm (12 inches) apart. According to Burpee (2019), loose leaf lettuce grows exceptionally well in double rows that are ...