Production of iceberg lettuce using mulches
نویسندگان
چکیده
منابع مشابه
Lettuce Production in California
Background In the early 20 century, California produced only little lettuce . For 1909, Knott and Tavernetti [4] reported that lettuce was produced on 595 acres in California, which corresponded to 11% of the total U.S. acreage. Lettuce production increased dramatically in the 1920s (Figure 1). While 6,100 acres were harvested in 1919 , the harvested area reached 112,000 acres by 1930 . The mar...
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The contamination of minimally processed fresh products such as fresh-cut Iceberg lettuce with microorganisms especially Escherichia coli and Salmonella spp. is a serious safety problem in the fresh food business. Therefore, the elimination of such microorganisms on sliced Iceberg lettuce by washing with water, ozonated water (1.5 ppm ozone concentration) and combinations of both was investigat...
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The effects of heat shock on PPO and POD activity in minimally processed Iceberg lettuce was examined during storage (10 days). The results were compared with the effect of temperature on crude extracts of these enzymes (in vitro analysis). Fresh-cut lettuce washed at 50 degrees C showed significantly lower PPO and POD activity throughout storage than lettuce washed at 4 degrees C and 25 degree...
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P, Dentith H, Smith D. A concurrent outbreak of Barmah Forest and Ross River disease in Nhulunbuy, Northern Territory. Comm Dis Intell (Aust) 1992;16:110-1. 10. Broom AK, Mackenzie JS, Lindsay MD, Wright AE. Epidemiology of Murray Valley encephalitis and Kunjin viruses in Western Australia, 1980-89. Arbovirus Research in Australia 1989;5:14-8. CSIRO and Queensland Institute of Medical Research....
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The effect of various household sanitizers including water, water acidified with white vinegar (1.5%), vinegar and lemon juice were evaluated for their effectiveness in reducing counts of Salmonella typhimurium on rocket and lettuce leaves. Treating rocket and lettuce samples with water containing 1.5% vinegar for 30 min or washing with water (at 28C) for 5 min showed negligible reduction in pa...
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ژورنال
عنوان ژورنال: Scientia Agricola
سال: 2001
ISSN: 0103-9016
DOI: 10.1590/s0103-90162001000400014