نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه علوم خاک / دانشگاه یزد
2 علوم خاک/دانشکده منابع طبیعی/دانشگاه یزد
چکیده
زعفران (Crocus sativus L.) از گرانقیمتترین محصولات کشاورزی و دارویی جهان است که دارای جایگاه ویژهای در بین محصولات صادراتی میباشد. در این مطالعه به منظور بررسی تأثیر برخی کودهای شیمیایی و زیستی بر عملکرد و کیفیت زعفران، آزمایشی به صورت فاکتوریل در قالب طرح کامل تصادفی با سه تکرار انجام شد. تیمارها شامل دو سطح کود زیستی EM (Effective Microorganisms) (با و بدون کود)، دو سطح سلنیوم (0 و 1 میلیگرم بر لیتر) و سه سطح فسفر (0، 25 و 50 میلیگرم بر لیتر) بودند. فاکتورهای مورد بررسی شامل تعداد گل، وزن تر و خشک گل، وزن تر و خشک کلاله، مقدار کروسین، پیکروکروسین و سافرانال بود. نتایج نشان داد که کاربرد کود EM در گیاهان تیمار شده با سلنیوم، باعث افزایش معنیدار تعداد گل زعفران شد. وزن خشک کلاله در گیاهان تیمار شده با کود EM و غلظت 50 میلیگرم بر لیتر فسفر، در حضور سلنیوم بهطور معنیداری بیشتر از عدم حضور سلنیوم بود. همچنین نتایج نشان داد که کاربرد سلنیوم به همراه کود EM در بالاترین سطح فسفر، باعث افزایش معنیدار وزن خشک گل و وزن تر کلاله گردید. بر اساس نتایج این مطالعه، مقدار پیکروکروسین در گیاهان تیمار شده با غلظت 50 میلیگرم بر لیتر فسفر بهطور معنیداری بیشتر از تیمار شاهد بود. همچنین، کاربرد فسفر باعث افزایش مقدار سافرانال گردید.
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