Soluble silicic acid as a sucking inhibitory substance in rice against the brown plant hopper (delphacidae, homoptera)

YOSHIHARA, T.; SÖGAWA, K.; PATHAK, M.D.; JULIANO, B.O.; SAKAMURA, S.

Soluble silicic acid as a sucking inhibitory substance in rice against the brown plant hopper (delphacidae, homoptera)

1979

YOSHIHARA, T. | SÖGAWA, K. | PATHAK, M.D. | JULIANO, B.O. | SAKAMURA, S.

Soluble silicic acid from water-soluble crude extracts of rice leaf sheaths exhibited a strong sucking inhibitory property against the brown planthopper at concentrations of 0.01 mg Si/ml or more. Silicic acid seems to play a significant role in causing highly localized planthopper feeding on the phloem of rice.

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