Record ID No. |
4046 |
Author(s) |
Hossein Soleimanzadeh , 2012 |
Affiliation |
Department of Agronomy and Plant Breeding, Pars Abad Moghan Branch, Islamic Azad University, Pars Abad Moghan, Iran. |
Title |
Response of sunflower (Helianthus annuus L.) to inoculation with Mycorrhiza under different phosphorus levels |
Source. Vol.(no):Page |
American-Eurasian Journal of Agricultural & Environmental Sciences, 12 (3): 337-341p. |
Categories |
Mycorrhiza General |
Subjects |
Soil plant relations |
Sub-subjects |
Fungal evaluation |
Host |
Helianthus annuus L. |
Organism |
Mycorrhiza |
Country |
Iran, East Asia |
Abstracts |
The effect of seed inoculation by Mycorrhiza and different levels of phosphorus fertilizer on growth
and yield of sunflower (Azargol cultivar) was studied in experiment farm of Islamic Azad University, Pars Abad
Moghan Branch during 2010 growing season. The experiment treatments were arranged in factorial based on
a complete randomized block design with three replications. Four phosphorus fertilizer levels of 25%, 50% 75%
and 100% P recommended with two levels of Mycorrhiza: with and without Mycorrhiza (control) were assigned
in a factorial combination. Results showed that head diameter, number of seeds per head, seed yield and oil
yield were significantly higher in inoculated plants than in non-inoculated plants. Head diameter, number of
seeds per head, 1000 seeds weight, biological yield, seed yield and oil yield were increased with increasing P
level above 75% P recommended in non-inoculated plants, whereas no significant difference was observed
between 75% and 100% P recommended. The positive effect of mycorrhizal inoculation decreased with
increasing P levels due to decreased percent root colonization at higher P levels. According to the results of
this experiment, application of mycorrhiza in present of 50% P recommended had an appropriate performance and could increase seed yield and oil production to an acceptable level, so it could be considered as a suitable substitute for chemical phosphorus fertilizer in organic agricultural systems. |