2019-05-02

The present study was performed to investigate the effect of light intensity and some essential nutrients (calcium and boric acid) on morphological, physiological, anatomical features of both leaves and stem transplants, in addition to mineral composition of olive (Olea europaea L.) leaves of Xestawi and Suranni cultivars in Duhok governorate/Kurdistan region/ Iraq, during 2016 growing season. A factorial experiment with three replicates was carried out using Randomized Complete Block Design (RCBD) with three factors, two cultivars (Xestawi and Suranni), two levels of light intensities (50 and 100%) and two levels of calcium (0.25 and 0.50%) and boric acid (50 and 100 mg.L-1) in addition of untreated transplants as control treatment. Transplants were foliar sprayed with calcium chloride (CaCl2) and boric acid (H3Bo3) three times. First spry was carried out on April 16th, while the second one was on June 5th, whereas, the third one was on June 25th, 2016.

2007-06-20

this study was conducted to show the effect of compression wood on some anatomical characteristics (Length, diameter, cell wall thickness, lumen diameter of tracheid cells and rankel ratio), and chemical components (extractives, lignin, holocellulse and ash), and mechanical characteristics (estatic bending, hardness, and tension perpendicular to wood grain) of brutia pine Pinus brutia Ten. trees growing naturally at Dohuk provenance northern of Iraq. The study included the different effects between leaning and vertical stems (standing trees), four levels of stem height, heartwood and sapwood, compression wood and opposite wood on studied characteristics in order to know the possibility of using tree stems containing compression wood in various technological wood products.