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۱Response of Some Seedlings Olive Cultivars to Foliar Spray of Yeast and Garlic Extracts With or Without Vascular Arbuscular Mycorrhizal Fungi
نویسنده(ها): ، ، ،
اطلاعات انتشار: World Applied Sciences Journal، بيست و چهارم،شماره۹، ۲۰۱۳، سال
تعداد صفحات: ۱۱
This study was conducted during two successive seasons 2008 and 2009 which started from 1st June to the 1st December on olive seedlings i.e. Quartina, Coronaki and Chemlaly cvs. Uniform seedlings at three months old were selected and transplanted at late May in Pomology greenhouse of the National Research Centre, Egypt. Seedlings were treated with organic compost, bio–fertilizers such as Vascular Arbuscular Mycorrhizal fungi (VAM) and\or yeast as well as natural extract of garlic either alone or in combinations. Seedling growth, nutrition status and hormonal contents were assessed. Concerning the effect on cultivars, results showed that Chemlaly cv. was progressed in stem length, leaves number, roots dry weight, as well as, N, P and Mn leaf contents. Besides its superiority in growth promoter contents i.e. indole acetic acid (IAA) and gibberellic acid (GA3), while abscisic acid (ABA) was decreased. However, Quartina cv. revealed pronounced values for stem diameter, number of branches and root length with superiority in leaf K content compared to the other two cultivars. Inoculation with VAM fungi recorded dominated values of stem length, number of branches and leaf N, K contents with lowest inhibitor values of ABA. While, the sole yeast or garlic extract treatments gave highest values for radical root length and diameter, consecutively than the other treatments. The highest values of stem diameter, leaves numbers, root system dry weight, leaf P, Fe, Zn contents, as well as, auxins and gibberellic acid were obtained as VAM combined with yeast extract. Also, high values of shoot dry weight and leaf Mn content were statistically obtained as VAM combined with garlic extract. The interaction between cultivars and different treatments showed that Chemlaly cv. reflected highest values of stem diameter, root dry weight, leaves number, root diameter, leaf N, GA and IAA contents than other treatments as treated with VAM + yeast followed in descending order with VAM and yeast extract than the other interactions. While, treatment of Quartina cv. with VAM + yeast followed dissentingly by VAM treatment showed highest values of number of branches, root length and leaf P, K contents, with lowest values of ABA, while, the highest values of stem length, root dry weight and leaf Fe, Mn content resulted in as Coronaki cv. inoculated with VAM and yeast or garlic extract. It can be recommended to inoculate soil with VA Mycorrhizal fungi alone or combined with foliar spraying of yeast and garlic extract for improving and enhancing seedling growth vigorous, nutrition status and hormonal promoter contents of Quartina, Coronaki and Chemlaly olive cvs., besides their safety for either environment or human health.
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