تأثير بعض المعاملات الزراعية في نمو و تزهير و حاصل الكورمات و الكريمات لصنفين من نبات الفريزيا Freesia hybrida L. cv. Corona, Prominence

الملخص EN

This research carried out in al-Shallal nursery which located at Mosul city / Iraq, during the period from 15th September 2003 to the first of May 2004.

Two weight of freesia corms, big (6-9) g and small 1.5 g from two varieties (Freesia corona and Freesia Prominence) were planted at four different dates (15th Sept 6th Oct, 27th Oct, and 17th Nov, 2003) in clay pots (25 cm in a diameter) which filled with three different agriculture media as following : 1.

Site soil + manure of sheep + building sand at a rate of 3 : 1 : 1. 2.

Site soil + peat moss + building sand at a rate of 3 : 1 : 1. 3.

Site soil + manure of sheep + peat moss at a rate 3 : 1 / 2 : 1 / 2. Result of this study could summaries as following : Planting the big size of corms in 6th of October 2003 was one of the best treatment, which differ from all other treatment and caused a significant increase in flowering stage and the flowing feature of freesia corms .

This study refers that planting the small size of corms on 15th of September 2003 was the best treatment as a highest flower stem and large number of flowers stem and the greatest diameter.

At the sometimes the small size of corms which planted at 27th November 2003 had the a significant effect on vegetative growth and number of new corms per plants.

Using the first agriculture media had a significant effect on some of the corms and cormels yield features of both varieties.

Result showed that there are significant differences between two varieties in the period of growing the flowerets shoot and a pearing the distinguished the period needs to open and according to these results corona variety is considered an earlier on caparison with prominence variety.