Greenhab Report – February 18th

Crew 205 Green Hab Report – 18-FEB-2019
GreenHab Officer: Nathan Hadland

Environmental control: Heating and Cooling w/ ambient air (0 hrs)
Shade Cloth (40%)
Average temperatures:

Low: 17.7°C

High: 23.5°C
Hours of supplemental light: 5 Hours

Daily water usage for crops: 11 gallons

Water in Blue Tank: ~ 205.5 gallons

Time(s) of watering for crops:

TIME NOTED TEMPERATURE(° C ) / HUMIDITY(%)
[AT TIME OF WATERING]

1) 09.40 AM 21.4° C / 31 %
2) 12.30 PM 19.2° C / 37 %
3) 15:30 PM 22.6° C / 47 %
4) 18:00 PM 20.6° C / 42 %

Changes to crops: Basil plants flowering and the “Mystery Greens” from the seed bank began sprouting. One of the remaining pots of cucumbers was scrapped.

Narrative: The Arabidopsis thaliana experiments are performing very well compared to the previous trial. Two regolith samples appear to be standing out as more viable candidates for plant growth substrates. The pH study on the regolith samples was completed today and the samples’ inability to support Arabidopsismay be in part due to their wettability properties and alkaline nature.

Miracle Grow nutrient supplement was sprayed sparingly on tomatoes, sugar snap peas, and basil. One of the remaining struggling cucumber plants died and the dead biomass weight will be used in our cellulosic ethanol ISRU project. The door remained closed throughout the day due to the consistent snowfall and consequently caused a fairly constant temperature throughout the day. 9.8 g of parsley and 6.4 g of basil were harvested as a garnish for lunch and dinner. Two of the basil plants flowered, which we groomed as a preventative measure against the plant entering another stage in its lifecycle. Upon further investigation, it appears that the radish plant that flowered is healthy contrary to our hypothesis in our last report.

Harvest: 9.8 g parsley

6.4 g of basil

Support/supplies needed: Several pots and the large grow bed appear to be over-saturated. Should we decrease the frequency of watering from 4 times a day to allow the soil to aerate.