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The characteristics and harmfulness of corn rough dwarf
Symptoms and characteristics of the disease The characteristics of corn rough dwarf disease is that maize can be infected after emergence, and it begins to show obvious symptoms in 5-6 crops of corn, but the new leaves, that is, the heart and leaves are not easily extracted and become smaller, which can be used as the basis for early diagnosis. At the base of the heart leaf, a transparent dotted spot initially appears on both sides of the midrib, and then gradually spreads to the whole leaf, and wax-white protrusions of various lengths are produced on the midrib of the leaf. The diseased plant leaves are characterized by dark green color, wide, short, hard, and brittle leaf vein bulges. Obvious shortening of internodes of diseased plants, severe dwarfs, dense clusters of leaves, paired appearances, and symptoms of the leaves, the diseased plants resemble "Clivia" plants. The diseased plant is short and short, and the length is less than 1/2 of the healthy plant, and it is easy to pull out. Root bifurcation, clustered. At the junction of rhizomes, it turned brown and lignified. The early-onset diseased maize had no yield, and the late-onset corn yield was extremely low.