After 30 days of growth, plants were removed from under the filter and taken indoors for structural and epidermal transmittance measurements and then destructively harvested for biomass quantification. Structural measurements included total height (soil surface to top of terminal bud), number of internodes, and height of each internode. Plants were then harvested and sorted into components (leaf, stem, branches), oven dried at 60°C for 24 hours and weighed for dry mass determinations. Leaf mass per area was determined by cutting a leaf
disk (1 cm ) from a mature leaf at the time of harvest using a cork-borer. The leaf disk was dried at 60 °C and weighed.
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