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Al Jīzah, Egypt

The present investigation was conducted during two successive seasons of 2011 and 2012 on "Anna" apple (Malus domestica, Borkh) budded on Malus rootstock. The trees were 5 years old and grown in the newly reclaimed calcareous soil at El-Nubaria region (El-Behira Governorate). Spraying included three concentrations of Sitofex (5ppm, 10ppm and 15ppm) accompanied by three concentrations of mixed of micronutrients (10gm Fe + 7gm Mn + 3.5gm Zn/20L water, 10gm Fe + 7gm Mn + 7gm Zn/20L water and 10gm Fe + 7gm Mn + 10.5gm Zn/20L water). Results showed that spraying with 15 ppm CPPU accompanied by 10gm Fe + 7gm Mn + 10.5gm Zn/20L water recorded the highest values of vegetative growth parameters i.e. shoot diameter, shoot length, shoots number and leaf area, leaf micronutrients content i.e. Fe, Mn and Zn. This treatment increased yield, fruit set%, fruit weight and fruit dimensions, as well as, it improved fruit physical and chemical characteristics as compared with control in the both seasons. Source

Al-Askar A.A.A.,King Saud University | Ghoneem K.M.,Egyptian Plant Pathology Research Institute | Ezzat A.E.-B.S.,Hort Research Institute | Saber W.I.A.,Water and Environment Research Institute
Journal of Pure and Applied Microbiology | Year: 2014

Sclerotium stem and tuber rot diseases caused by Sclerotium rolfsii is a significant problem facing the Jerusalem artichoke cultivation. The objective of this study was to evaluate the efficacy of biotic and a biotic agents in control of stem and tuber rots of Jerusalem artichoke. For this purpose, Trichoderma atroviride and T. reesei were isolated from rhizosphere of healthy Jerusalem artichoke plants. These isolates positively antagonized S. rolfsii. Arbuscular mycorrhiza, mixture of the previous Trichoderma species and/or hydroquinone were evaluated under greenhouse and field conditions against stem and tuber rots. The treatments of arbuscular mycorrhiza + hydroquinone and arbuscular mycorrhiza + Trichoderma minimized the disease incidence, improved the plant growth and yield and enhanced the tuber quality of Jerusalem artichoke. These data encourage the incorporation of such agents in the rots control and the production strategies of Jerusalem artichoke. Source

Ragab M.E.,Ain Shams University | Abo El-Yazied A.,Ain Shams University | Al-Sherif M.,Ain Shams University | Hassanin N.M.,Hort Research Institute | Mohamed H.H.,Hort Research Institute
Acta Horticulturae | Year: 2012

This study was carried out at the Experimental Farm of Strawberry and Non-Traditional Crops Center, Faculty of Agriculture, Ain Shams University, Cairo, Egypt, during the two successive seasons of 2006-2007 and 2007-2008. The aim of this study was to investigate the effect of cultivar, transplant crown diameter and root trimming on yield and fruit quality. Frigo transplants were used. A split-split design with three replicates was adopted. The main plots were assigned to the cultivars 'Sweet Charlie' and 'Festival', while the sub-plots were for transplant crown diameter, i.e., small diameter (0.5-0.8 cm) and large diameter (0.8-1.2 cm). The sub-sub-plots were for root trimming, i.e., without trimming, root length 5 cm and root length 10 cm. Results showed that 'Festival' recorded the highest values in leaf area, total yield and ascorbic acid in the two tested seasons. Data indicated also that using large crown diameter had a higher significant increment in leaf area, total yield and ascorbic acid in both seasons. Root trimming for 5 cm had a higher significant increment in leaf area and ascorbic acid in both seasons. Source

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