Effect of NPK, Humic Acid, Biofertilizer and Light Intensity on Vegetative Growth and Bulb Production of Narcissus trilandrus L. and Hyacinthus orientalis L.

Abstract

The research was carried out in order to compare among effect of three different fertilizers: bio, chemical, and organic. on two plants selected to conduct this research were (Narcissus trilandrus and Hyacinthus orientalis), under shaded and non-shaded environment from Autumn 2020 to Spring 2021 in Gerdarash field belongs to the college of Agriculture Engineering Sciences. The vegetative and the production of characters, were measured. Regarding Narcissus, the bio-fertilizer showed the most promising result when it came to the number of leaves and bulblets (3.67, 1.67 per plant respectively). The chemical fertilizer showed better results in the height of the plants (32.67 cm) and the diameter of the flowers (11 cm). For the Hyacinth plants, the bio-fertilizer proved its superiority in plant height (27 cm), flower petiole length (12.33 cm), number of flowers (32.33), flower diameter (6.33cm), and new bulblets with three ones compared to another treatment and control. Whereas for non-shad, we recommend planting the ornamental bulbs in open and non-shaded places as it obtained the best results for vegetative and floral traits for both plants.