Kamwut, P., Udomprasert, N., Pornprom, T., & Leewanich, P. (2010). Effects  of  Water  Deficit  on  Growth, Yield and Seed Oil  Content    of  Sunflower (Helianthus  annuus L.) . Thai Agricultural Research Journal, 28(1), 75. https://doi.org/10.14456/thaidoa-agres.2010.6