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A greenhouse study was conducted to evaluate the
effect on total growth and leaf nutritional content in lettuce (Lactuca sativa L.) in the Agrotechnology Sciences Department of the Universidad Autonoma de Chihuahua, Mexico in 2007. Three types of fertilization treatments were analyzed: two organic and one conventional or inorganic.
Both vermicompost and compost were produced from cattle manure in a 25-wk process.
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