SURVEY OF FUNGAL LEAF SPOT DISEASES OF DATE PALM (Phoenix dactylifera L.) IN SHAAT-ALARAB ORCHARDS/ BASRAH AND EVALUATION OF SOME FUNGICIDES.

H. ABASS, MOHAMMED; A. HAMEED, MOHAMMED; H.ALSADOON, ABDULLAH

	SURVEY OF FUNGAL LEAF SPOT DISEASES OF DATE PALM (Phoenix dactylifera L.) IN SHAAT-ALARAB ORCHARDS/ BASRAH AND EVALUATION OF SOME FUNGICIDES.
Basrah Journal For Date Palm Research
Article 2, Volume 6, Issue 1, 2007, Pages 1-21 PDF (0 K)
Authors
MOHAMMED H. ABASS; MOHAMMED A. HAMEED; ABDULLAH H.ALSADOON
Abstract
Twenty-two different fungal species belong to eighteenth genera were isolated from seven cultivars of Date Palm Phoenix dactylifera L. infected with leaf spot disease from Shaat-Alarab orchards. The results of pathogencity test on the leaf of Zuhdi c.v elucidated the pathogenic effect of Mycosphaerella sp.; Nigrospora oryzae ; Ulocladium atrum ; Epicoccum purpurascens ; Alternaria chlamydospora & Pestalotia sp. which stimulated the symptoms of leaf spot. The recording of N. oryzae ; E. purpurascens , A. chlamydospora & Pestalotia sp.as true pathogen on Date Palm leaf was the first time in Iraq.The results of leaf spot disease field survey explained high susceptibilty of Zuhdi c.v to infection with infection percentage reached 68%, followed by Sayer c.v, while Khadraoy c.v showed the lowest suscepitable(10.20%). The results showed that the phenolic compounds content of khadraoy & Sayer c.v leaf(%) were the highest 2.40 ,2.50%, respectively, with significant diferrence than the other لد: ٦ العدد: ١ السنة ٢٠٠٧  مجلة البصرة لأبحاث نخلة التمر ا 22 cultivars, while Zuhdi c.v had the lowest percentage of phenolic content.The results of fungicides screening proved the efficiency of Carbendazim treatment which led to inhibite the growth of pathognic fungi completely in lquid and solid media, followed by Beltanol.The carbendazim treatment led to decrease significantely the infection rate (3.70 cm in control) to 0.25 cm.

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