تاثیر محلول پاشی آهن، روی و منگنز بر میزان عناصر و خصوصیات کیفی علوفه سورگوم
الموضوعات : یافته های نوین کشاورزیایمان فراهانی 1 , حسن طهماسبی زاده 2 , مرجان صالحی 3
1 - دانشگاه آزاد اسلامی واحد اراک، باشگاه پژوهشگران جوان و نخبگان، اراک، ایران
2 - دانشگاه آزاد اسلامی واحد اراک، باشگاه پژوهشگران جوان و نخبگان، اراک، ایران
3 - کارشناس ارشد زیست شناسی
الکلمات المفتاحية: روی, آهن, محلول پاشی, منگنز و کیفیت علوفه,
ملخص المقالة :
اجرای این طرح در سال 1390 در مزرعه تحقیقاتی دانشگاه پیام نور فرمهین صورت گرفت. طرح در قالب بلوک کامل تصادفی در 4 تکرار و هر تکرار شامل 8 کرت اجرا شد. تیمارها شامل محلولپاشی عناصر روی، آهن و منگنز، آهن و منگنز، آهن و روی، روی و منگنز، آهن، روی، منگنز و تیمار شاهد بود. مصرف کودها به صورت محلول پاشی با غلظت 5 در هزار وکودهای مورد استفاده از نوع سولفات بود. محلول پاشی در دو مرحله ساقه دهی و ظهور گل تاجی صورت گرفت. نتایج نشان داد اثر تیمار بر میزان خاکستر، فیبر، پروتئین، نیتروژن، فسفر، پتاسیم، آهن، روی و منگنز معنی دار شد. مصرف آهن، روی و منگنز باعث کاهش غلظت فسفر و فیبر و افزایش نیتروژن و پتاسیم در علوفه سورگوم شدند. همچنین بین عناصر آهن، روی و منگنز در میزان غلظت آنها در گیاه رابطه منفی وجود دارد و مصرف هر کدام باعث کاهش غلظت دیگری می شود.
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