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Relationship Between Trifluralin and Phosphorus on Transplanted Tomatoes

Published online by Cambridge University Press:  12 June 2017

H. P. Wilson and
F. B. Stewart
H. P. Wilson
Affiliation:
Virginia Truck and Orn. Res. Sta., Painter, Va. 23420
F. B. Stewart
Affiliation:
Virginia Truck and Orn. Res. Sta., Norfolk, Va. 23501
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Abstract

Tomato (Lycopersicon esculentum Mill. ‘Campbell 17’) plant height and dry weight of tops decreased with increasing rates of α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine (trifluralin) and increased with increasing rates of phosphorus. Trifluralin and phosphorus interacted in their effects on root growth; phosphorus was less effective in promoting root growth as the rate of trifluralin increased. Phosphorus content of plant tops increased with each increment of soil-applied phosphorus at 0 and 0.84 kg/ha of trifluralin, but each increment of applied phosphorus did not significantly increase plant phosphorus content at higher rates of trifluralin. The inhibitory effect of trifluralin on phosphorus uptake diminished with time in 1969. Interactions between trifluralin and phosphorus did not occur in 1970.

Information

Type
Research Article
Information
Weed Science , Volume 21 , Issue 2 , March 1973, pp. 150 - 153
Copyright
Copyright © 1973 Weed Science Society of America 

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References

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