What do you feel are the most important environmental conditions that affect vegetable production in a greenhouse?
closed as too broad by Niall C.♦ Jan 25 '16 at 3:21
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Nutrients, heat, humidity, water and light.
Airflow to prevent moulds - adequate ventilation, some seeds germinate better when cool, others won't if they get hot. Basic research will tell you what conditions your seeds or plants would like.