تأثير بعض المبيدات الزراعية و الأسمدة الورقية في حدوث القشب على ثمار التفاح في المنطقة الجنوبية من سورية

Other Title(s)

Effect of some pesticides and leaf fertilizers on russeting phenomenon incidence of apple fruit in south of Syria

Joint Authors

نابلسي، غسان
مزهر، هايل
شنان، كميل
قويدر، نصوح
مزهر، بيان محمد
الشعبي، صلاح محمود

Source

مجلة وقاية النبات العربية

Publisher

Arab Society for Plant Protection

Publication Date

2000-12-31

Country of Publication

Lebanon

No. of Pages

9

Main Subjects

Botany

English Abstract

During the period 1995-1997.

field experiments to study induced russeting on apple fruits of Golden Delicious variety in Syria and its causal agents clearly indicated that pesticides, foliar fertilizers and their recombination's were considered as the main factors for ring.

net.

spotty and common russetings Variability of russetmg shape depended on the applied pesticide or foliar fertilizer Generally, the russeang appeared few days after first application in irrigated groves, when the apple fiuit size equaled to hazelnut, whereas the russeang symptoms appeared after second or third spray in non-irrigated groves.

Application of pesticide, or foliar fertilizer time and again mcreased ratios of russetmg incidence and us severin', and was more evident m irrigated than in non-irrigated groves, especially on fruits of weak and defoliated trees Similar results were obtained by pesacides application at noon in comparison with morning sprays.

In accordance with russetmg severin', caused artificially, the tested pesticides, foliar fertilizers and their recombination's were grouped in 1) agr.

chemicals which caused poor russetmg (0.0-10.0); 2) Agr.

chemicals caused intermediate russeting (10.1-25.0); 3) Agr.

chemicals caused severe russeting (25.1-50.0).

4.) Agr.

chemicals earned highly severe russeting (more than 50.0).

Data Type

Conference Papers

Record ID

BIM-968485

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