mysterious plants

agricultural agriculture bio biodiesel bioethanol biofuel biomass breadstuffs cereal crisis cultivate cultivation debate economy edible energy environment ethanol feed field fields flour focus food foodstuff foodstuffs fuel genetic genetically gentle gmo grain grains grass grasses green harvest industry market material modified natural nature need needs oil organic organism organisms output pesticide pesticides plant plants price prices produce production raw reap rise rising seed sky soft softness source sow sown spike spikes spring starch summer sunny time use vegetation veggie yellow