Journal of Environmental Biology

The effect of phosphate bio-fertilizer (Barvar-2)

on the growth of marigold

Fatemeh Zaredost¹, Davood Hashemabadi²*, Maryam Barari Ziyabari³, Ali Mohammadi Torkashvand²,

Behzad Kaviani², Maryam Jadid Solimandarabi⁴ and Mohammad Zarchini¹

¹Young Researchers and Elite Club, Rasht Branch, Islamic Azad University, Rasht, 4193977789, Iran

²Department of Horticultural Science, Rasht Branch, Islamic Azad University, Rasht, 4193977789, Iran

3Management Group, Hafez Khak Gil Company, 4147654919, Iran

⁴Department of Horticultural Science, Rasht Branch, Islamic Azad University, Rasht, 4193977789, Iran

*Corresponding Author E-mail: davoodhashemabadi@yahoo.com

Publication Data

Paper received:

21 December 2012

Revised received:

21 May 2013

Re-Revised received:

15 August 2013

Accepted:

17 September 2013

Abstract

The present study was conducted to study the individual and combined effect of bio-fertilizer (Barvar-2) and chemical phosphate fertilizer on the floral quality of marigold (Tagetes erecta L.). A factorial experiment was carried out which consisted of? two factors: i) inoculation of seed, root and seed + root with bio-fertilizer (Barvar^-2) and control; application of chemical phosphorus at 100 mg l-1, 200 mg l^-1, 300 mg l-1 and 400 mg l^-1 levels. In this study, flowering time, display life, fresh and dry weight of flower, available soil phosphorus, shoot phosphorus and carotenoid content were evaluated. Results showed that the combined effect of bio- and chemical fertilizer was insignificant (p<1 and 5%) for most of the characteristics studied except for shoot phosphorus and carotenoid content in petals. The lowest time to flowering (64.67 days) was obtained in seeds and transplant roots inoculation to bio-fertilizer ? 400 mg l^-1 P. Maximum display life (25.35), fresh weight (16.20 g), carotenoid content (3.903 mg g^-1 d. wt.) and concentration of P in shoots (0.352%) were observed in transplant roots inoculation to bio-fertilizer ? 400 mg l^-1 P.

Key words

Phosphorus, Phosphorus bio-fertilizer, Tagetes erecta L., Vegetative and flowering traits

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