First report on rhizoctonia crown and root rots and powdery mildew diseases of sugar beet in riyadh region, Saudi Arabia
By: Muhammad, Salah al-Din al-Husayni. Saudi Journal of Biological Sciences. Vol. 10, no. 2 (Dec. 2003), pp.166-174, 9 p.
Subjects: Riyadh; Roots; Saudi Arabia