GreenHab Report – February 17th

GreenHab Officer: Nathan Hadland

Environmental control: Heating and Cooling w/ ambient air (~0.5 hrs)

Shade Cloth (40%)

Average temperatures:

Low: 18.6°C

High: 26.3°C

Hours of supplemental light: 5 Hours

Daily water usage for crops: 12 gallons

Water in Blue Tank: ~ 216.5 gallons

Time(s) of watering for crops:

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

1) 09.25 AM 22.3° C / 23 %
2) 12.05 PM 24.4° C / 24 %
3) 15:15 PM 22.6° C / 69 %
4) 18:00 PM 21.5° C / 45 %

Changes to crops: Radish plant is flowering.

Narrative: The Arabidopsis thaliana experiments died overnight despite ample watering due to dehydration. Consequently, the experiments were restarted this afternoon (see Science Report). Miracle Grow nutrient supplement was sprayed sparingly on sugar snap peas, tomatoes, mustard, and cucumbers. Dead biomass on the sugar snap peas was pruned in order to help improve the productivity and health of the plants. The dead biomass weight will be used in our cellulosic ethanol ISRU project. The door was opened at 1515 hours to allow for ambient airflow but closed at 1545 because of the snow storm and drop in temperature. 4.2 g of Mixed Salad Greens were harvested as a garnish for dinner. One of the radish plants is flowering which may be cause for concern (angiosperms often flower when stressed). We will investigate when the radishes were planted in the logbook to determine whether this is part of the natural lifecycle or actually a stressed organism.

The GreenHab inventory and inventory of plants currently growing at the facility was completed today by the GreenHab officer and today’s XO. These will be made available for future crews and updated by crews during their rotation.

Harvest: Mixed salad greens: 4.2 g

Support/supplies needed: None.