Effect of Nitrogen and Calcium on Growth and Nutrient Accumulation in <I> Hippeastrum </I> spp.

Abstract

The effect of plant nutrition on growth of Hippeastrum spp. was carried out into two experiments. The first experiment was focused on the effect of three levels (50, 75 and 100 mg/l) of nitrogen concentrations on growth of Hippeastrum. The results showed that nitrogen concentration at 75 mg/l  was optimal for Hippeastrum growth. This concentration gave the highest  plant height and bulb diameter of 57.55 and 4.45 cm, respectively. Nitrogen concentration in plant tissue increased while phosphorus concentration decreased with  the increasing levels of nitrogen. However, potassium concentrations were not different among treatments.

The second experiment was focused on the effect of calcium concentrations on growth of Hippeastrum. Treatments were 5 different levels of calcium  0, 50, 100, 150 and 200 mg/l. The results showed that plants height was increased significantly when treated with calcium. However, leaf number and bulb diameter were not significant different among treatments. Calcium treated plants had higher concentration of nitrogen, potassium and calcium but lower phosphorus concentration in their tissue.