The rate of seeding was
5 gm–2 (0.73 g/tray).Plants were fertilized once a week with liquid
fertilizer, 20N–8.8P–16.6K, and watered as
needed. Sunnhemp was grown under optimal
water and nutrient conditions in the greenhouse
and was not stressed. Sunnhemp leaves
and stems were harvested at the vegetative
stage and allowed to dry in the sun (inside the
greenhouse) for 16 d. Leaves and stems were
dried in an oven at 50 C for 1 week and then
frozen at –70 C.