Effects of root-zone temperature and limestone on root-zone medium pH and electrical conductivity on New Guinea impatiens 'Celebration Orange', The
The purpose of this experiment was to examine the effects of various media temperatures and pH on nutrient availability for New Guinea impatiens (Impatiens x hawkeri Bull.). It is important for greenhouse growers to be cognizant of the root-zone medium pH, as New Guinea impatiens are sensitive to nutrient toxicities at low pH. It is thought that limestone at low root-zone medium temperatures is not quickly activated leading to these toxicities. The objectives of this project were to determine: The effect of root-zone medium pH on foliar symptoms of iron and manganese toxicity; and the effect ...
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