The Leaf Concentrations of Atrazine in Cereal Crops as Related to Tolerance

Wheeler, H.L. and Hamilton, R.H. (1968) The Leaf Concentrations of Atrazine in Cereal Crops as Related to Tolerance. Weed Science, 16 (1). pp. 7-10.

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Seedlings of wheat (Triticum aestivum L.), corn (Zea mays L.), and sorghum (Sorghum vulgare Pers.) were exposed to 2-chloro-4-ethylamino-6-isopropylamino-s-triazine (atrazine) in solution culture. Following prolonged treatment, the tolerant species, corn and sorghum, accumulated leaf concentrations of unaltered atrazine which were comparable to those found in the sensitive species at the point of acute toxicity. In the sensitive species, wheat, there did not seem to be a critical leaf concentration of atrazine which was necessary to bring about acute toxicity. The leaf concentration in wheat could be raised by increasing the concentration of atrazine in the nutrient solution or by lowering the temperature at which the plants were grown. The loss of chlorophyll in sensitive species was closely related to and preceded acute toxicity symptoms.

Item Type: Article
Author Affiliation: Pennsylvania Experiment Station, Pennsylvania State University
Subjects: Crop Improvement
Divisions: Other Crops
Depositing User: Mr B Krishnamurthy
Date Deposited: 23 May 2012 13:51
Last Modified: 23 May 2012 14:01
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