Lettuce – Red Sails

431gApr 22, 2016 = Day 0.  Plants started from seed (Botanical Interests).  Seeds sowed in 1.5-inch rockwool cube in 2-inch net-pot.  Moistened with dilute fertilizer solution (1.2 mL Dyna-Gro Liquid Grow, 0.8 mL pH Down per gallon of tap water).  Nutrient concentrations (in ppm):  N 22, P 29, K 16, Ca 6, Mg 1.6, S 0.2, Fe 0.3, Mn 0.2, B 0.1, Zn 0.2, Cu 0.2, Mo 0.003, Ni 0.0003, Co 0.005.  pH = 6.0.

Apr 24 = Day 2.  Plant germinated, placed directly under a fluorescent light (2 ft. T8 bulb, 17W, 6500k) for 16 hours per day.

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May 2 = Day 10

May 5 = Day 13.  Installed plant into 1-gallon bucket (Orgain).  Hydroponic solution composed of 1 gal (3.8 L) tap water, 15 mL 250x Masterblend 4-18-38, 15 mL 250x calcium nitrate, 15 mL 250x magnesium sulfate, 0.2 mL Dyna-Gro Pro-TeKt, 1 mL pH Down.  (This solution is equivalent to 1 gal water, 2 g Masterblend, 2 g calcium nitrate, 1 g magnesium sulfate).  Nutrient concentrations (in ppm):  N 103, P 95, K 202, Ca 100, Mg 29, S 34, Fe 2.1, Mn 1.1, B 1.1, Zn 0.3, Cu 0.3, Mo 0.05, Si 4.  pH = 6.0.  Thinned to 1 plant per net-pot.

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May 13 = Day 21

May 14 = Day 22.  Moved plant to indoor grow room, receiving 8 hours LED light per day.

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May 26 = Day 34

Jun 12 = Day 51.  Plant is getting tall, falling over.  Harvested all leaves.  Final statistics: Total fluid used = 7 cups (0.44 gallons).  Final pH of fluid = 6.5.

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