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Effect of Temperature on Response of Tomatoes to Several Dinitroaniline Herbicides and Phosphorus

Published online by Cambridge University Press:  12 June 2017

H. P. Wilson ,
F. B. Stewart  and
T. E. Hines
H. P. Wilson
Affiliation:
Soil Sci., Virginia Truck and Ornamentals Res. Sta., Norfolk 23501
F. B. Stewart
Affiliation:
Virginia Truck and Ornamentals Res. Sta., Painter, VA 23420
T. E. Hines
Affiliation:
Virginia Truck and Ornamentals Res. Sta., Painter, VA 23420
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Abstract

Effects of temperature on response of transplanted tomatoes (Lycopersicon esculentum Mill. ‘Campbell 17′) to trifluralin (α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine), nitralin [4-(methylsulfonyl)-2,6-dinitro-N,N-dipropylaniline], profluralin [N-(cyclopropylmethyl)-α,α,α-trifluoro-2,6-dinitro-N-propyl-p-toluidine], and isopropalin (2,6-dinitro-N,N-dipropylcumidine) were investigated in field studies. Trifluralin and nitralin caused greater reductions in growth and yields of tomatoes transplanted early in April than to tomatoes transplanted around May 1. Responses to profluralin were similar but total yields of early transplanted tomatoes were not reduced although initial yields were below those of tomatoes treated with isopropalin. In controlled environment chamber studies, percent phosphorus of plant tops was reduced by trifluralin at low temperatures but was not influenced by trifluralin at high temperatures. Tomoto responses to phosphorus as reflected by plant fresh weight, dry weight and phosphorus content (mg/plant) were reduced by trifluralin at low and high temperatures.

Type
Research Article
Information
Weed Science , Volume 24 , Issue 1 , January 1976 , pp. 115 - 119
Copyright
Copyright © 1976 by the Weed Science Society of America 

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References

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