اثر محلول‌پاشی برگی با اسید هیومیک بر ترکیب معدنی برگ، عملکرد و کیفیت میوه سیب رقم ’گرانی‌اسمیت‘

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد گروه علوم باغبانی، دانشکدة کشاورزی، دانشگاه زنجان، زنجان، ایران

2 استادیار گروه علوم باغبانی، دانشکدة کشاورزی، دانشگاه زنجان، زنجان، ایران

3 کارشناس‌ ارشد گروه علوم باغبانی، دانشکدة کشاورزی، دانشگاه زنجان، زنجان، ایران

چکیده

به‌منظور بررسی اثر محلول‌پاشی برگی با ­اسید هیومیک بر ترکیب معدنی برگ، عملکرد و کیفیت میوۀ سیب رقم ’گرانیاسمیت‘(Malus domestica L. cv. Granny Smith)، آزمایشی در قالب طرح کاملاً تصادفی در شهرستان خرمدره در استان زنجان انجام گرفت. محلول‌پاشی اسید هیومیک در چهار سطح صفر، 5، 10 و 15 میلی‌گرم در لیتر روی درختان هشت‌سالۀ سیب ’گرانی‌اسمیت‘ پیوندشده بر روی پایۀ MM106 انجام گرفت. محلول‌پاشی دو، چهار و هشت هفته پس از مرحلۀ تمام گل اجرا شد. نتایج آزمایش نشان داد که تیمار اسید هیومیک به­طور معناداری عملکرد، مواد جامد محلول، اسیدیته، غلظت پتاسیم برگ و میزان کلروفیل کل را افزایش داد. غلظت‌های 10 و 15 میلی‌گرم در لیتر بیشترین اثر را بر عملکرد داشتند. تیمار اسید هیومیک موجب کاهش رشد رویشی شاخه‌های سال جاری شد. اختلاف معناداری بین سفتی بافت، طول و قطر میوه‌های تیمارشده و شاهد وجود نداشت. صفاتی نظیر قند کل، سطح برگ، غلظت نیتروژن و فسفر برگ تحت تأثیر تیمار اسید هیومیک قرار نگرفتند. براساس نتایج تحقیق حاضر، غلظت‌های 10 و 15 میلی‌گرم در لیتر اسید هیومیک اثر مهمی بر افزایش عملکرد و زودرسی سیب ’گرانی‌اسمیت‘ داشت.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of foliar spraying by humic acid on mineral leaf composition, yield and fruit quality of apple cv. ‘Granny Smith’

نویسندگان [English]

  • Sedigheh Bahrami 1
  • Ali Soleimani 2
  • Fariborz Habibi 3
1 1 . M.Sc. Student, Department of Horticultural Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
2 Assistance Professor, Department of Horticultural Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
3 . M.Sc., Department of Horticultural Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
چکیده [English]

Effect of foliar spraying by humic acid on mineral leaf composition, yield and fruit quality of apple (Malus domestica L. cv. ‘Granny Smith’) was studied. An experiment based on randomized complete design was conducted in Khorramdare city of Zanjan province. Spraying of humic acid was conducted in four levels 0, 5, 10 and 15 mg/l on eight year-old ‘Granny Smith’ apples grafted on MM106 rootstock. Spraying was conducted two, four and eight weeks after full bloom stage. Results showed that humic acid treatment significantly increased yield, total soluble solid (TSS), acidity (pH), concentration of leaf potassium and total chlorophyll content. Concentrations of 10 and 15 mg/l had the highest effect on yield. The humic acid treatment reduced vegetative current shoot growth. There have not significant effect on fruit firmness diameter and length fruit of treated fruits and control. The parameters such as total sugar, leaf area, concentration of N and P of leaf did not influenced by humic acid treatment. According to the results, it can be concluded that concentrations of 10 and 15 mg/l of humic acid spraying have main effect on increasing yield and precocity of ‘Granny Smith’ apple.

کلیدواژه‌ها [English]

  • Chlorophyll
  • fruit firmness
  • Growth
  • Total sugar
  • Yield

 

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