The effect of fertilization with boron and potassium on some natural and flowering traits of the gazania plant

Abstract

A Factorial experiment was conducted at the Center of Albadia and Sawa Lake Studies - Almuthanna University during the autumn season 2018 – 2019, To study the effect of potassium fertilization and foliar spraying with boron and the interaction between them in the vegetative and flowering growth of Gazania plant. The first factor using three concentrations of potassium (0, 2 and 4 g .bag-1) which symbolized by K1, K2 and K3 respectively, and three concentrations of boron (0, 25 and 50 mg. L-1) which symbolized by B1, B2 and B3, respectively. The complete randomization design (C.R.D) was followed in the experiment with three replicated. The results showed a significant increase when using potassium in the height of the plant 25.90 cm. The number of leaves 27.19 leaf.plant-1, The fresh weight of the vegetative growth 47.48 g, The fresh and dry weight of the roots 13.54 g and 3.98 g respectively and the roots length 26.01 cm and the number of flowers 6.59 flowers .plant-1 and dry weight of flowers 4.70 g. Differences were not significant in the dry weight of the vegetative growth and the number of offshoots.plant-1. While the treatment of B3 gave the highest values of vegetative growth and significantly excelled on the treatments B2 and B1 in all traits such as the fresh weight of the vegetative growth 39.78 g, the dry weight of the roots 3.69 g, the root length 25.81 cm, the number of flowers 6.04 flower. plant-1 and the dry weight of the flowers 4.26 g, While treatment B3 did not differ significantly from treatment B2 in some of the studied traits, there was a significant interaction between the treatments in many of the studied traits.