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Determining the Effects of Nutrient Concentrations on Hydroponically Grown Lettuce, Year 2

CSEF · 2005 Plant Biology

Jason R. Regier · Washington Academic Middle School, Sanger

Overview

Objectives/Goals The purpose of my science project is to determine the effects of different concentrations of fertilizer on hydroponically grown lettuce. Methods/Materials Red Leaf lettuce seeds were germinated in individual starter cups.Three separate hyproponic tanks were constructed. A Styrofoam panel was placed within each tank. Holes were drilled through the panels to form "pockets" for each starter cup. Aerators were connected to each tank to supply oxygen. Artifical plant lights were hung over each tank to substitute for sunlight. Water and MAXSEA 16-16-16 fertilizer was added to each tank. Results The plant weight varied from tank to tank depending on the amount of fertilizer added per gallon of water. Plant health also was affected by the amount of fertilazer added. Conclusions/Discussion As a result of conducting this investigation, I learned that variations in fertilizer can impede the growth rate of plants. Plants may produce less or more plant weight due to the amount of fertilizer added.

Summary statement

To determine the effects of nutrient concentrations on hydroponically grown lettuce.

Help received

Mother helped type report; Father help construct planting beds

Competition history

  • CSEF 2005 Plant Biology · Entry J1633

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