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This article in AJ

  1. Vol. 69 No. 3, p. 523-525
    Received: Jan 26, 1976

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Chemical Tests to Evaluate Plant Sandblast Damage1

  1. D. V. Armbrust2



Plant sandblast damage is currently evaluated by decreases in dry weight, survival, plant height, or yield. A laboratory method would be desirable to decrease the time required to determine plant damage and it might be used to predict plant yields. The objective of this study was to evaluate assays for exosmosed amino acids, exosmosed electrolytes, internal conductivity of plant stems, trypsin inhibitor, and chlorophyll content for their ability as predictors of yield decrease due to wind erosion damage. Greenhouse gown tomatoes (Lycopersicon esculentum Mill. ‘Bonnie Best’) and soybeans (Glycine max (L.) Merr. ‘Wayne’) were exposed to 5 amounts of blowing sand ranging from 0 to 30 kg. Exosmosed amino acids and exosmosed electrolytes can be used to predict fresh and dry weights for up to 20 days after tomatoes and soybeans are damaged. However, final yields cannot be predicted by any of the five assays because of the plants' ability to recover from the damage.

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