زمان پایان بارندگیهای بهاره در موفقیت زراعت دیم مؤثر است. دو راهکار اساسی (آبیاری تکمیلی و روابط قارچ-ریشه) برای بهبود عملکرد گیاهان زراعی با اثر همافزایی در اعمال توأم آن‌ها وجود دارد. برای بررسی تلقیح میکوریزایی نخود دیم، آزمایشی دوساله به صورت فاکتوریل بر پایه طرح بلوک کامل تصادفی با سه تکرار در سال‌های 1393 و 1394 در مرکز تحقیقات کشاورزی آذربایجان‌غربی اجرا شد. تیمارهای آزمایش شامل زمان پایان بارندگی (20اردیبهشت‌ماه، سوم خردادماه و 17خردادماه)، تلقیح میکوریزا (شاهد و قارچ گونه Glomus intraradices) و آبیاری (دیم و یک نوبت آبیاری تکمیلی) بودند. تلقیح میکوریزایی تحت شرایط آبیاری تکمیلی باعث افزایش معنیدار عناصر فسفر، کلسیم و خاکستر بقایا، پتاسیم و پروتئین دانه نخود نسبت به کشت دیم شد. ادامه بارندگی تا 17خرداد، عملکرد بقایا (1451کیلوگرم در هکتار) و دانه (602کیلوگرم در هکتار) نخود در گیاهان میکوریزایی را تحت شرایط آبیاری تکمیلی نسبت به پایان زودهنگام بارندگیها (20اردیبهشت‌ماه وسوم خردادماه) افزایش بیشتری داد. به‌طورکلی کیفیت بقایا و دانه نخود در کشت دیم با یک نوبت آبیاری بهبود یافت. تلقیح میکوریزایی صرفنظر از زمان پایان بارندگی در میزان بهبود کیفیت و عملکرد دانه (در آبیاری تکمیلی تا 20درصد و در کشت دیم تا 24درصد) مؤثر بود. نتایج نشان داد که دو راهکار آبیاری تکمیلی و تلقیح میکوریزایی روشهای قابل اعتمادی برای دستیابی به عملکرد مطلوب درکشت دیم نخود می‌باشند.
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