THE CONCENTRATION OF NUTRIENTS FOR GROWING ANTHURIUM ANDREANUM IN SUBSTRATE.
Flower production and vegetative growth decreased linearly with increasing nutrient concentrations. With the cultivar Tropical the total flower weight decreased 8% and the vegetative plant weight 9% per unit EC value. With the cultivar Cuba the corresponding percentages were 13 and 11 respectively. The results suggest that an EC value of the nutrient solution of 0.7 dS m-1 can be recommended for optimal productions.
The effect of the nutrient concentration on the absorption of nutrients was examined by analysing young fully grown leaves. Guide values for nutrient contents were composed on the basis of these data.