Effect of Spraying Foliar with Humus and Izomen Biostimulants on Some Vegetative and Flowering Parameters of Freesia hybrida L.

Neveen Anwer Abdalla

doi:10.33794/qjas.2019.167063

Abstract

The experiment has been conducted in the nursery of the Department of Horticulture and Landscape Design, College of Agriculture, the University of Basrah to study the effect of Spraying foliar of the biostimulants Izomen and Humus on the growth and flowering of Freesia plants. The corms in similar size were planted in pots with a diameter and height of 25 cm, which filled with 2.5 kg of sterilized loam soil. After 50 days of planting, the plants sprayed with Humus at 0, 1.5, 2.5 ml L-1 and after five days sprayed with Izomen at 0, 1.5, 2.5 ml L-1. The different concentrations of biostimulants are sprayed three times, the period between one spray and another 15 is days. The results showed that the spraying of Humus at 2.5 ml L-1 significantly increased the plant height, the number of leaves and the leaf content of chlorophyll recorded (29.56 cm, 8.33 and 58.43%) respectively. Moreover, it is recorded early the flowering date (130 days), and the highest flowering mean is (2.12 inflorescence/plant) and the highest period of the remained flowers on the plant and the vase life (10 and 8 days) respectively. The effects of both Humus and Izomen were similar. In addition to the highest mean of their interaction at 2.5 ml L -1 for all the studied traits.

Highlights

Freesia plant is one of the world's primary cut flowers, which belongs to the Iridaceae family
The experiment has been carried out at the nursery of the Department of Horticulture and Landscape Design, College of Agriculture, the University of Basrah to study the effect of spraying with biostimulants Izomen and Humus on the growth and flowering of Freesia plant
The interaction between the biostimulants shows that the Humus at a concentration of 2.5 ml L-1 and the Izomen at 2.5 ml L-1 give the highest value of the height of the plant and the number of leaves in the plant reached 33.25 cm and 11.53 leaves, respectively

Summary

Introduction

Freesia plant is one of the world's primary cut flowers, which belongs to the Iridaceae family. The importance of Freesia comes from its fragrant flowers, as well as being grown mainly for the production of potted plants or cut flowers, and after carnation in Europe in terms of its adoption as cut flowers [1]. Freesia flowers grow from the Corm and form groups of fragrant flowers of the different color [2]. The growth of the leaves parameters are flat, green, and the flowers are six-petals. The petals are carried on a floral stand at an angle of 90o with primary flowers [3]. Colors of the flowers of Freesia are found in pink, yellow, red, and white [4]

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