عنوان المقالة:EFFECT OF ORGANIC AND CHEMICAL FERTILIZERS ON THE GROWTH AND FLOWERING OF FREESIA PLANT تأثير الأسمدة العضوية والكيميائية على نمو وتزهير نبات الفريزيا
Plants need an optimum nutrition range as well as a least necessary limit. Below this minimum level, plants start to
present nutrient deficiency signs. Extreme nutrient uptake can also cause weak growth because of toxicity. Therefore, the
proper quantity of application and the position of nutrients are important, so the study was conducted at the College of
Agriculture and Forestry, University of Mosul, Iraq, for the season 2017-2018 to study the effect of some organic fertilizers
(Fito alga max) and NPK fertilizer on the features of vegetative, flowering growth of Freesia Double Red cultivar. The Fito alga
max fertilizer (2 ml l-1) application produced an increase in all vegetative, flowering and characteristics, plant height 37.18 cm,
leaf area 98.90 cm2, number of leaves 8.50 leave plant-1, length of flower stalk 32.68 cm, fresh weight of flower stalk, and the
diameter of the flower stalk 0.91 cm, the duration of the flowers on the plant 18.56 days, vase life 74.35 days and the percentage
of nitrogen and phosphorus, Potassium and sugars 1.75, 0.33, 2.3 and 4.67%, sequentially.
Key words: Organic fertilization, Nutrition, Cut flower, Freesia.
أ.د. علاء هاشم يونس الطائي | Prof-Dr-Alaa Hashim Younis Altaee | 22665