Effect of phosphite and phosphate in different pH on yield, growth and P status in Broccoli
Article Type:
Research/Original Article (دارای رتبه معتبر)

Phosphite (PO33; Phi; valence of +3), a reduced form of phosphate (PO43; Pi; valence of +5), that are being widely marketed either as an agricultural fungicide or as a superior source of plant phosphorus (P) nutrition. The present study was conducted to investigate the effect of phosphite and phosphate in different pH on yield, growth and P status in broccoli (Brassica oleracea L var. italica cv. Fiorentino). The experiment was conducted with three pH levels (5.5, 7, 8.5) factorially combined with three P source levels (Pi, Phi and Pi& Phi). The plants were grown in black buckets containing 8 L of aerated nutrient solution for 10 week after transplanting. Phi had statistically significant negative effect on yield and was formed immature heads and to form button-like flower heads. Likewise, Phosphite increased phosphorus and potassium concentration in the leaves, roots ,Stems and heads. Both P and K concentration were significantly reduce by the increase pH level. The highest yield was observed in Pi& Phi with pH(5.5) at 237 g plant -1 .Phosphate (pH=5.5) compare to Phosphite (pH=5.5) increased by 75% in yield. . The increase in Pi uptake in the Phi treatment plant caused increased in P concentration in leaves and growth reduction and phytotoxicity. The negative effects application of only Phosphite was strong inhibiting effect in fresh weight head. Hence, Phosphite was not available to the plants as a P source.

مجله تغذیه گیاهان باغی, Volume:1 Issue: 1, 2018
41 to 48
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 50 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!