نوع مقاله : مقاله پژوهشی
نویسنده
استادیار بخش تحقیقات فنی و مهندسی کشاورزی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی آذربایجان‌شرقی، سازمان تحقیقات، آموزش و ترویج کشاورزی، تبریز، ایران
10.22092/amsr.2025.368609.1512
چکیده
یکی از مهمترین آفات یونجه، سرخرطومی برگ یونجه است که اگر با آن مبارزه نشود خسارت زیادی به کشاورزان در چین اول وارد میکند و چین دوم را با تأخیر رشد روبه رو خواهد کرد. آشنا نبودن کشاورزان با روش‌های درست سمپاشی موجب می‌شود آنها مزارع خود را با سمهای رایج و با غلظت بالا سمپاشی کنند. استفاده از ادوات نامناسب و سمپاشی‌های بی‌رویه اثرهای مخربی بر محیط‌زیست و به خصوص حشرات مفید فعال در مزارع یونجه دارند. در این مقاله، پارامترهای مؤثر در مبارزۀ شیمیایی با آفات یونجه مطالعه و تأثیر کاربرد سمپاشهای مختلف، زمان و دفعات سمپاشی بر کنترل سرخرطومی برگ یونجه بررسی شده است. متغیرهای مورد اندازه‌گیری شامل مشخصات قطره‌ای، یکنواختی پاشش، جمعیت آفت، عملکرد محصول و میزان خسارت آفت در واحد سطح است. نتایج بررسیها نشان دهندۀ تأثیر معنیدار نوع سمپاش بر مشخصات قطره‌ای و یکنواختی پاشش و تأثیر معنیدار نوع سمپاش، زمان و دفعات سمپاشی بر کنترل سرخرطومی برگ یونجه است. خسارت محصول در حالت مبارزه نشدن با سرخرطومی برگ یونجه تا 50 درصد برآورد شده است.
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