Effect of cultivars, controlled release fertilizers (CFR)‎ and media on the growth and volatile oil of Rosmarinus officinalis plant

Abstract EN

This study was carried out in the Nigul Nursery- Duhok city from Feb.

2013 to Jan.

2014.

Aimed to evaluate three soilless media composed of different rates of (Sheep manure, sawdust, hay and lawns clipping ) by volume compared with river soil and peat moss as control, further more to study the effect of Controlled Release Fertilizers (CRF) type (Basacote p-Max 9M) with four levels (0, 6, 12 and 24) gm.pot-1 size (5) liter on the growth and volatile oil of two cultivars “prostratus” and “Tuscan Blue” of Rosmarinus officinalis L.

plants.

The results can be summarized as follows: The media2 which consist of (40 sheep manure: 20 sawdust: 20 hay: 20 lawns clipping) by volume gave the highest significant values of Ash (9.15) % and Iso value (89.46) %, while the media1 (25 sheep manure: 25 sawdust: 25hay: 25 lawns clipping) gave the highest significant values of growth index (28165) cm3/plant when compared with river soil and peat moss media which in turn gave the highest significant values of volatile oil percentage (1.24)%, volatile oil production (0.721) ml/plant.

Fertilizing of rosemary plant with 6 gm.

pot-1 led to significant increase in Ash percentage (9.10) %.

While the highest significant results for growth index (28209) m3, volatile oil percentage (1.27) % and volatile oil production (0.744) ml/plant was obtained with fertilizer levels 24 gm.pot-1.

The prostratus cultivar showed significant increase in volatile oil percentage (1.363) %, volatile oil production (0.658) ml/plant and ISO value (92.96) % when compared with Tuscan Blue