Summary
Irrigation dynamics and the response of greenhouse tomato (Lycopersicon esculentum Mill. 'Caruso') to different irrigation management treatments (nutrient solution EC and irrigation matric potential setpoints) were examined in plants grown in peat-based substrate during either the spring or fall of 1989. Two nutrient solutions with differing electrical conductivity (EC of 1.5 and 3.0 dS m−1) were automatically applied to plants until saturation at one of two substrate matric potential (SMP) setpoints (−6.5 or −4.5 kPa). Yield measurements indicated no significant effects due to different SMP setpoints but spring total yield and average marketable fruit weight were higher for low-EC solution treatments. Blossom-end rot was slightly higher in the fall under the highest EC treatment. Foliar m
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