ارزیابی وضعیت تغذیه‌ای برخی رقم‌های پسته بنابر نتایج تجزیۀ برگ

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشیار، بخش تحقیقات خاک و آب، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان زنجان، سازمان تحقیقات، آموزش و ترویج کشاورزی، زنجان، ایران

2 محقق، بخش تحقیقات خاک و آب، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان زنجان، سازمان تحقیقات، آموزش و ترویج کشاورزی، زنجان، ایران

چکیده

بررسی وضعیت عنصرهای غذایی در گیاهان، روشی مؤثر در تشخیص و تعیین بهینۀ الگوی عنصرهای غذایی پرمصرف و کم‌مصرف موردنیاز، افزایش عملکرد و نیز بهبود کیفیت محصولات کشاورزی است. در این زمینه، این پژوهش به‌منظور ارزیابی وضعیت تغذیه­ای، تغییرپذیری فصلی و غلظت عنصرهای برگ پنج رقم پسته (قزوینی، بادامی زودرس، ممتاز، احمدآقایی و کله­قوچی) انجام شد. این بررسی در قالب طرح بلوک­های کامل تصادفی در زمان با سه تکرار در ایستگاه تحقیقات شهرستان ماهنشان استان زنجان به اجرا در­آمد. بررسی نتایج غلظت عنصرهای نیتروژن، فسفر، پتاسیم، منگنز، روی و مس نشان داد، بیشترین غلظت عنصرهای نیتروژن و فسفر در زمان تشکیل میوه مشاهده شد، غلظت این عنصرها تا زمان پر شدن مغز میوه کاهش یافت. غلظت پتاسیم برگ تغییرپذیری چندانی در مرحلۀ تشکیل میوه و رشد میوه نداشت و در هنگام پر شدن مغز، غلظت این عنصر کاهش پیدا کرد. بیشترین غلظت عنصر روی در هنگام تشکیل میوه مشاهده شد و پس از آن غلظت این عنصر کاهش یافت. نتایج شاخص انحراف از درصد بهینۀ برگ (Deviation from optimum percentage) نشان داد، ترتیب اهمیت عنصرهای غذایی رقم‌های پسته K>P>Zn>B>Mn>Cu>N است. در جمع قدر مطلق DOP رقم بادامی با شاخص 450 ضعیف­ترین تعادل تغذیه­ای را  نسبت به دیگر رقم‌ها داشت و در عنصرهای پتاسیم و بور کمتر از حد بهینه بود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Evaluation of nutritional status some pistachio cultivars based on leaf analysis

نویسندگان [English]

  • Mehdi Taheri 1
  • Majid Najafi 2
1 Associate Professor, Soil and Water Research Department, Zanjan Agriculture and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Zanjan, Iran
2 Researcher, Soil and Water Research Department, Zanjan Agriculture and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Zanjan, Iran
چکیده [English]

Assessing nutritional status of plants is the effective approach in diagnosing and determining macro and micro elements optimum patterns and increasing the yield and improving the quality of agricultural products. Therefore, this study had been done for evaluating nutritional status, seasonal variations and concentration of nutrients in leaves of five pistachio cultivars (Qazvini, Badami Zodras, Momtaz, Ahmad Aghaii and Kalle Gochi). This study was carried out in completely randomized block design a few years with three replications at Mahneshan research station. Results showed that the most Nitrogen and Phosphorous concentrations were in the fruit set stage and the concentration of these elements was decreased until kernel filling stage. Potassium concentration of leaves had not so many variations in the fruit set and fruit development stages and was decreased in the kernel filling stage. The highest concentration of Zinc was observed in the fruit set stage and then decreased. Results of the Deviation from Optimum Percentage revealed that the nutritional importance order was as K>P>Zn>B>Mn>Cu>N. ΣDOP of 450 for the Badami Zodras cultivar was the worst unbalanced nutritional estate among all cultivars and the Potassium and Boron concentrations of this cultivar was less than the optimum levels.

کلیدواژه‌ها [English]

  • Deviation from optimal percentage
  • Nutrients
  • pistachios
  • Seasonal changes
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