2.3. Microcosm design
Microcosms consisted of a 3.79 L cylindrical-shaped clear plastic container with three 7*13 cm windows of fine mesh netting.
The container had a 10 cm opening. The plastic container was inverted over a 10 cm square plastic pot containing three V1 soybean plants (Teare and Hodges,1994).
The opening of the container was held inside the pot;it was buried in the soil and sealed with tape. Microcosms were held on cafeteria trays in a walk-in growth chamber at
24:16 °C on a 16:8 h L:D and watered by filling the tray with water.