Hussam Hdaiwah^*(1)

(1). Department of Horticulture, Faculty of Agriculture, Tishreen University, Latakia, Syria.

(*Corresponding author: Hussam Hdaiwah, E-mail: Hussam hdaiwah76@gmail.com).                                                  

Received: 7/03/2023              Accepted: 6/06/2023 

Abstract: 

This research aimed to study the role of bio fertilization EM1, humic acid, and organic fertilization on vegetative growth, flowering, and cormels production of Gladiolus to reduce the mineral fertilization. Biofertilizer by EM1(4ml/m²) was applied with irrigation water two times, 15 days after planting and one month after the first one. Two g/L Humax (50% humic acid) was used and applied by the roots with two times at 4, and 6 leaf . The results showed that the use of EM1 and humic acid and the organic stage of plant development. fertilization had a positive effect on vegetative growth (average number of stems, plant length , and average number of leaves on the plant) and proportion of dry matter in the vegetative part.  It also showed a positive effect on formation spikes and flowering (early flowering, number of spikes, spike length, number of flowers by spike) ,and increasing number of cormels on plant.

Keywords: Gladiolus, bio-fertilization EM1 , humic acid , spike, cormels .

Full paper in Arabic: pdf