AUTOMATED IRRIGATION OF A BI-LEVEL GREENH OUSE

Our objective was to automate the irrigation of a greenhouse bi-level prototype. The irrigation system consisted of a weighing station and a n electric pump which were linked to the automatic control unit of the apparatus. The irrigation system was tested with tomato transplants. Under capillarity action, water added to each plate was absorbed by th e soil of each pot. Irrigation solution was delivered according to the weight loss of each plate and the growing rate of transplants. Result s obtained show an uniform growth rate of the produced transplants dur ing the controlled irrigation period (1 month).