Photos of rice straighthead disorder caused by soil arsenic or other unknown physiological conditions.
Slide 1: Curved deformed palea and lemma of rice grain, parrot beak symptom.
Slide 2: Curved palea and lemma called parrot beaks symptom of rice grain due to the straighthead disorder.
Slide 3: Rice grains severely affected by straighthead disorder.
Slide 4: Upright heads with sterile grain due to the straighthead disorder.
Slide 5: Curved palea and lemma symptoms on rice grain called parrot beak due to the straighthead disorder.
Slide 6: Deformed and discolored sterile grain caused by rice straighthead disorder.
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The LSU AgCenter and the LSU College of Agriculture