Lettuce Farming Articles
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Seed germination, root elongation, root‐tip mitosis and micronucleus induction of five crop plants exposed to chromium in fluvo‐aquic soil
The present study aims at determining the toxic effects of chromium (Cr) on cabbage (Brassica oleracea), cucumber (Cucumis sativus), lettuce (Lactuca sativa), wheat (Triticum aestivum) and corn (Zea mays), and identify the sensitive plant species and appropriate bioassays for potential use in phytotoxicity assessment of Cr in soil. Results showed that seed germination might not be a sensitive ...
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Modeling the die-off of
E. coli andAscaris in wastewater-irrigated vegetables: implications for microbial health risk reduction associated with irrigation cessationThis study assessed the die-off of Escherichia coli (E. coli) and Ascaris suum on lettuce (Great Lakes 118) and cabbage (Brassica oleracea var capitata) in wastewater-irrigated fields using comparative mathematical die-off models. The study revealed that none of the survival curves of E. coli and A. suum was best fitted with the log-linear model, indicating that the classical first-order ...
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Modeling toxicity of binary metal mixtures (Cu2+–Ag+, Cu2+–Zn2+) to lettuce, Lactuca sativa, with the biotic ligand model
The biotic ligand model (BLM) was applied to predict metal toxicity to lettuce, Lactuca sativa. The Cu2+ had the lowest median effective activity (EA50M), compared with Ag+ and Zn2+ (EA50Cu = 2.60 × 10−8 M, EA50Ag = 1.34 × 10−7 M, EA50Zn = 1.06 × 10−4 M). At the 50% response level, the fraction of the total number of biotic ligands occupied by ions (f50M) was lowest for Ag+ among the metals ...
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Toxicity and bioaccumulation of biosolids‐borne triclosan in food crops
Triclosan (TCS) is an antimicrobial compound commonly found in biosolids. Thus, plants grown in biosolids‐amended soil may be exposed to TCS. The authors evaluated the plant toxicity and accumulation potential of biosolids‐borne TCS in two vegetables (lettuce and radish) and a pasture grass (bahia grass). Vegetables were grown in growth chambers and grass in a greenhouse. Biosolids‐amended soil ...
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Hydro-Transporting Food: best practices for food processing pumps
Processing plants look for continuous and trouble-free operation from a pump capable of transporting even the most delicate whole food products or processed foods, while keeping product damage to a minimum. This ensures the highest profits for the plant. Cornell pumps help hydro-transfer systems to clean and convey potatoes, carrots, cranberries, pickles, cherries, beans, peppers, leafy ...
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Growbags (Coco slabs)
Keeping up with the latest grow techniques and products are probably becoming increasingly important for an ardent farmer or gardener in today’s rapidly changing world. Cultivating fast growing plants is becoming a priority especially if it is a method that is 100% natural. Designed and created to suit all requirements Coir Grow bag, also known as Coco slabs, is an easy, useful and ...
By CoirGreen
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Quantitative risk assessment of acquiring listeriosis from consumption of minimally processed vegetables
Listeriosis is a serious invasive disease with high fatality rates especially among the vulnerable population. Although the causative pathogen had been detected in several foods in Malaysia, there have so far been no reported cases of listeriosis in Malaysia. The aim of this study was to carry out a quantitative risk assessment to estimate the risk of acquiring listeriosis through the consumption ...
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Biocontrol of Escherichia coli O157:H7 exerted by endogenous microflora and oleoresins in minimally processed lettuce and carrot
The objectives of this study were to analyse the effectiveness of native microflora of lettuce and carrot in controlling Escherichia coli O157:H7 and to evaluate the technological application of oregano and rosemary to control E. coli in vegetables stored at 8?C and 20?C. The interaction between the background microflora of lettuce and carrot with E. coli O157:H7 was observed at 20?C. In samples ...
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Research carried out on the use of Amnite AG100 in hydroponically grown crops case study
Project Objective AG100 is a microbially based product produced by Cleveland Biotech Limited UK. It consists of a mixture of components including bacteria. The product is supplied in a cellulose based semi permeable sachet ready for incubation. Work performed during the summer at Cockle Park Experimental Station, Northumberland England and Growers trials in Australia found that application of ...
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Calendar reports from growers and distributors for A100 case study
Reports 6th July Des Boxall - Queensland Reports that a baby squash grower noted increased growth rates 3 days after inoculation and, after 7 days, an increase in the number of flowers obtained. 29th July Wonder Gardens Pty - Fiji One week after dosing Lettuce section No.3 doing exceptionally well (1 week transplanted) 7th August Booyong Hydroponics - Fiji Did not reintroduce Amnite A100 to ...
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Stud case study
A major vegetable grower in Lantokia, Fiji, using soilless culture systems began to trial Amnite A-100. His crops consisted principally of lettuce, tomatoes, capsicums, cucumbers, zucchinis and melons. Before the trials they had been plagued with root diseases, mosaic virus and insect attack, control of which required constant use of pesticides and ultraviolet lighting. The first trials ...
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Green catering tips
It's that time of the year again - party time. Whether it's St Patrick's Day, Easter, birthdays, Christmas, weddings, Thanksgiving, Halloween or Hanukkah, we all enjoy letting our hair down and having fun with friends and family! And with these events, come the mountains of munch-ables - tasty treats of every shape, colour and ingredient. But how green is our spinach really, and should we be ...
By green24
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Differential effects of low humidity levels on butterhead quality indices related to external, middle and internal lettuce sections
Leaf water status evolution during greenhouse butterhead lettuce storage under adverse humidity conditions was evaluated. The relationships between water status and the chlorophyll content and overall visual quality (OVQ) were analysed. Parameters were evaluated in external, middle and internal sections of the lettuce heads. Indices showed different behaviour in different sections. There was a ...
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A machine learning approach to crop localisation using spatial information
This paper describes an approach to recognise and localise centres of mature lettuce heads in the field when the lettuce leaves obscure the distinctions between plants. This is of great value when using an automatic harvester in cluttered or closely planted vegetation. The aim of this work is to investigate and verify the potential use of spatial rather than visual clues for recognition and ...
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Hielscher Ultrasonics: Ultrasound in vinegar manufacturing
Ultrasonics in Maufacturing ans Aging of Vinegar The ultrasonic mixing technology is used in manifold ways in food and beverage industry. Hielscher Ultrasonics found a new application in the field of food processing: The sonication of vinegar, which is an important condiment in cuisine. The production of vinegar (e.g. balsamic), especially of high quality products as balsamic vinegar, is a ...
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Potato Salad Manufacturer
The manufacturing of potato salad creates a high BOD and Fats, Oil & Grease wastewater that was costing over $6,000/month in surcharges to treat by the local POTW. The facility investigated the use of the Floccin product and found that Floccin-H removed over 90% of the TSS and 80% of the BOD, thereby decreasing the surcharges to the POTW from $6,000/month to $1,500/month. The facility treats ...
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Summer cover crop and management system affect lettuce and cantaloupe production system
Cover crops are widely used in both conventional and organic systems to protect and improve the soil. This study evaluated the effect of summer cover crop and management system on the production of fall romaine lettuce (Lactuca sativa L.) and spring cantaloupe (Cucumis melo L.) from 1999 to 2003. Cover crop treatments included cowpea [Vigna unguiculata (L.) Walp.] incorporated (CPI), cowpea used ...
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Annual effective dose assessment for 226Ra and 228Ra due to consumption of foodstuffs by Tehran city residents
A total of 71 samples from 23 different foodstuffs, namely root vegetables (beetroot, carrot, onion, potato, radish and turnip), leafy vegetables (lettuce, parsley, spinach and white cabbage) and lentils, kidneys, soya, eggs, rice, meat, tomato paste, cooking oil, salami, tea, bread, sausage and cubic sugar, were purchased from markets and analysed by gamma spectrometry for their 226Ra and 228Ra ...
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Effect of Dislodging Techniques on Foliar Residue Determination for Agricultural Crops
Abstract The Agricultural Reentry Task Force (ARTF) conducted a study to determine whether different dislodgeable foliar residue (DFR) techniques had any effect on the amount of residues dislodged from the leaves of vegetable crops. Four previously employed techniques were evaluated with two chemicals (carbaryl and methomyl) on two crops (cabbage and lettuce). Carbaryl, a moderately ...
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Pesticide and Pathogen Contamination of Vegetables in Ghana’s Urban Markets
Abstract The objective of the study was to determine and compare the current level of exposure of the Ghanaian urban population to hazardous pesticide and fecal coliform contamination through the consumption of fresh vegetables produced in intensive urban and periurban smallholder agriculture with informal wastewater irrigation. A total of 180 vegetable samples (lettuce, cabbage, and spring ...
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