تأثير عدد مرات الرش الورقي بحمض الهيوميك (Humic acid) على النمو الخضري والإنتاجية لنبات الفلفل (Capsicum annuum L)
DOI:
https://doi.org/10.54172/68gf4s02الكلمات المفتاحية:
الفلفل الحار – ارتفاع النبات- الكلورفيل - وزن الثمرة.الملخص
تم تنفيذ التجربة في مزرعة كلية الزراعة جامعة عمر المختار خلال الموسم الزراعي لسنة 2022 وذلك لدراسة تأثيرعدد مرات الرش بحمض الهيوميك 1% علي النمو الخضري والثمري لنبات الفلفل صنف ستارتير Starter)) . شملت التجربة علي المعاملات التالية : الرش بالماء فقط (شاهد)، الرش مرة واحدة (بعد أسبوعين من الزراعة)، الرش مرتين (بعد أسبوعين من الزراعة، و بعد ثلاثة أسابيع من الزراعة)، وتمت زراعة الشتلات في الحقل يوم 10 أغسطس 2022، وكان عمر الشتلات 45 يوم. صممت التجربة بالقطاعات كاملة العشوائية مع ثلاث مكرارات، و كانت الصفات الخضرية المدروسة هي (ارتفاع النبات، عدد الأوراق/ نبات ، عدد الأفرع/ نبات، الكلورفيل) بينما الصفات الثمرية (متوسط وزن الثمرة، متوسط طول الثمرة، عدد الثمار/نبات، وزن المحصول /نبات). أوضحت النتائج أن الرش مرتين، بعد أسبوعين وثلاثة أسابيع من الزراعة، حقق أعلى القيم لجميع الصفات الخضرية والثمرية المدروسة، ويليه الرش مرة واحدة بعد أسبوعين من الزراعة، بينما سجلت معاملة الشاهد (الرش بالماء المقطر فقط) أقل القيم لهذه الصفات.
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