WASET
    Hossein Soleimanzadeh,  Effect of VA-Mycorrhiza on Growth and Yield of Sunflower (Helianthus annuus L.) at Different Phosphorus Levels.   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2010, vol. 47(11). 820 - 823
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/9232.