502 Intermittent CO2 Enrichment for Hydroponic Lettuce Production
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چکیده
منابع مشابه
Hydroponic Vegetable Production | Aggie Horticulture
In the U.S., tomatoes are only exceeded by potatoes in economic importance. Among fresh vegetable products, annual per capita consumption of fresh tomatoes is only exceeded by lettuce and potatoes. Consumption of fresh tomatoes has remained fairly constant at around 12.8 pounds for the past 10 years as compared to the consumption of processed tomatoes in the form of ketchup and sauces which has...
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1. This document is HS405, one of a series of the Horticultural Sciences Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date, January 2010. Visit the EDIS Web site at http://edis.ifas.ufl.edu. 2. Richard Tyson, director, Orange County Extension Office, Orlando, FL; Robert Hochmuth, multicounty extension...
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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...
متن کاملHydroponic Production: An Educational DVD for High School Agricultural Education
The purpose of this project was to create an educational video based upon hydroponic farming. It was created for agricultural educators, in hope high school agricultural teachers would show it in their classrooms. The goal was for students to be able to see a commercial style hydroponic system, and to understand the basic concepts of operation. The video was intended to be supplemented with add...
متن کاملEffects of Ammonium Nitrogen on Lettuce Grown on Pumice in a Closed Hydroponic System
Two successive lettuce crops were grown in spring 2005 in a completely closed hydroponic system. The ratio of ammonium to total nitrogen (Nr) in the fresh nutrient solution (FNS) introduced into the closed system to compensate for plant uptake was 0, 0.1, 0.2 and 0.3 on amolar basis. In allNr treatments, the concentrations of total N, K, Ca, Mg, P, and micronutrients in the FNS were identical, ...
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ژورنال
عنوان ژورنال: HortScience
سال: 1999
ISSN: 0018-5345,2327-9834
DOI: 10.21273/hortsci.34.3.532a