SENSITIVITY OF SOME LOCAL & NON LOCAL FOREST TREE SAPWOOD OF FUNGAL INFECTIONS BY CHANGING IN SPECIFIC WEIGHT AND RATIOS OF WOOD CHEMICAL COMPONENTS

I. Alzaidbaqy, Osamah; G. Hmawndi, Nahla; Montaz, Mohamed

	SENSITIVITY OF SOME LOCAL & NON LOCAL FOREST TREE SAPWOOD OF FUNGAL INFECTIONS BY CHANGING IN SPECIFIC WEIGHT AND RATIOS OF WOOD CHEMICAL COMPONENTS
Euphrates Journal of Agriculture Science
Article 1, Volume 7, Issue 3, 2015, Pages 187-193
Authors
Osamah I. Alzaidbaqy; Nahla G. Hmawndi; Mohamed Montaz
Abstract
The study was carried out at the laboratories of the collage of Agriculture University of Kirkuk in 2013-2014 season for the purpose of testing the extent of the resistance of some types of local & Non local Tree Sapwood to the fungal infection (Aspergillus niger,Rhizopus stolonifer and Penicillium oxalicum). The loss in the Specific Grafity ( SG ) of the seven forest tree Sapwoodadopted as an indicator of the infection extent and also relied on the ratios of Chemical component for the fixation of fungal growth on woods . The result showed that the Specific Grafity of the Sapwood for (Pinus brutia , Pinus eldarica, Quercus agelops, Quercus infectoria,Salix acmophylla ,Melia azadirachta and Acer cineracens) were (0.420, 0.434, 0.682, 0.618, 0.455, 0.482, 0.651) resbectivly before the fungal infection . These values has decreasedbecause they were influenced by all the factors studied , which were ( wood type and Fungis ). The results also apeared that wood types of trees which containing a high percentage of extracts showed good resistance to fungal infection , the lowest value of loosing in Specific Gravity wasin Pinus brutis ( 0.072 ) and the largest value in the Quercus agilops (0.190). However, all fungal types has an effected on Specific Gravity for the Sapwood . Aspergillus niger showed a greater impact on the infected woods , when the losses ratio was ( 0.141).

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