SEASONAL SOWING EFFECT AND TWO PINCHING TYPES ON CARNATION Dianthus caryophyllus L. GROWTH AND PRODUCTION IN UNHEATED PLASTIC HOUSE

Abstract

The experiment carried out by three factors the first factor of seasonal culture: spring and autumn , and the second factor five types of manual pinching: singular , singular and a half , double and double twice, in addition to the control , the third factor chemical pinching, spray with Cytokinin CPPU by three concentrations (4, 6 and 8) mg/L in addition to the control. Objective of the study to know the possibility of using cultivar Scarlet Can Can in protected house is unheated to flowers production and the effect of factors , in vegetative and flowering growth of carnation , and as well as knowledge of the impact of the weekly harvest stages in the quality and specifications of some of vegetative and flowering growth of carnation. The main findings can be summarized as follows: Overtook seasonal culture in autumn on spring culture to increase high plant 38.41%, and the stem flower length 45.58% , and stem diameter flowered an increase of 40.08% , while did not show any significant differences in the number of leaves. The autumn culture gave the highest in all its flowering qualities, despite their need number of days until flowering 98.23 on more than spring culture, which took 80.23 days since excellence fresh and dry weight of stem flower and diameter of the flower, and the fresh and dry weight flower, and the weight of petals, and the number of flowers / plant and m2 and increased vase life and duration of flowering by 2.7 days and 26.05 days. Led a manual double twice pinching to negative impact on the dry weight of the flower by 16.21% compared to control as well as in the number of flowers / plant or m2, which was less than 9.99 flower / plant and 140.50 flower/m2, respectively. Led chemical Pinching by concentration 8 mg / liters of the Cytokinin CPPU to a significant decrease in stem flower length and diameter of 3.07% and 5.90%, respectively.