النمو الطولي و التراكم القطري لسيقان خلفات شجرة السدر Ziziphus spina-christ (L)‎ Willd في الأراضي المروية بوادي شحوح-حضرموت

الملخص EN

Wadi Shohouh is located in main Wadi Hadhramaut as one of the tributary wadies Linked with southern plateau.

Attention has been paid by the Yemeni farmers to the multipurpose trees and shrubs that he agrees this agrofrestry tree or shrub of Ziizyphus trees in Wadi Shohouh to be one of the component of his farming system.

Five farms of Ziizyphus trees in Wadi Shohouh, irrigated by wells water, have been selected.

After felling trees height and stem diameter coppices for six years have been recorded, then static analysis has been computed.

It is found that coppice height was high and fast at first year while mean annual growth varied between 0.849 – 0.987 m, and mostly high standard deviation and coefficient variation through six years were found between ± 0.736 – ± 1.866 and 12.427 – 47.063 % respectively.

Also high and fast growth of coppice diameter was found at first year of growth while mean annual diameter growth was 0.735 – 1.149 cm and high standard deviation and coefficient variation through six years were found also as ± 0.712 – ± 3.036 cm and 27.438 – 46.426 % respectively.

Results of coppice annual mean diameter growth accumulation showed significant differences at 5% level between years where first year showed the best result ( 104.8 cm ).