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Analysis of alternative LED light by indoor lettuce production in Mexico

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  2021 ASABE Annual International Virtual Meeting  2100120.(doi:10.13031/aim.202100120)
Authors:   Jorge Flores, Daniel Fuentes
Keywords:   AgUrban, plant Factory, lux intensity, Plant poduction

Abstract. Even though urban agriculture is a relative new technology which have demonstrate enormous productive potential around the world, in Mexico it is incipient. Countries such as Japan, the Netherlands or the United States have implemented various ways of growing crops in closed buildings, becoming a serious urban alternative. Among the basic variables to be supplied in indoor crops are artificial light or LEDs. Lettuce was cultivated in a small vertical farm under indoor conditions with artificial lamps. There are specialized lamps on the market for use in agriculture, however their use is still deficient due to confusion in units, and characteristics in general, in addition to cost, since they are normally designed for factories of industrial plants. The objective of this work was to analyze the development of lettuce plants with three light intensities provided by lamps for non-specialized commercial use for indoor agricultural use in Mexico. The results obtained indicate that if the light intensity is not enough in critical stages of phase change of the plant, its development stops. Likewise, the radioactive spectrum is more important than the amount of light that is provided to achieve that the economic optimum occurs within the limits of the physiological optimum.

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