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Environmental Influences on the Selectivity of Diphenamid in Seeded Tomato (Lycopersicon esculentum)

  • Robert P. Rice (a1) and Alan R. Putnam (a1)

Abstract

Several environmental and edaphic factors were monitored to determine their association with tolerance of seeded tomatoes (Lycopersicon esculentum Mill.) to diphenamid (N,N-dimethyl-2,2-diphenylacetamide). Injury increased with increasing soil pH and reduced temperature within 7 days of seeding in both field and growth chamber tests. The application of soluble fertilizer and diphenamid at planting acted synergistically to increase tomato injury. Prior to emergence of the tomato seedlings, 14C-diphenamid uptake was slight but increased with higher temperatures, while growth was inhibited at both low and high temperatures. Uptake and metabolism of 14C-diphenamid by plants in the cotyledon stage was not greatly affected by temperature or pH; however, translocation from the root to the shoot was reduced under low temperatures and high pH. These differences in translocation paralleled reported differences between tolerant and susceptible species, and may account for the increased diphenamid injury to tomatoes grown under stress conditions.

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1. Bingham, W. W. and Shaver, R. 1971. Uptake, translocation, and degradation of diphenamid in plants. Weed Sci. 19:636643.
2. Deli, J. and Warren, G. F. 1970. Uptake, translocation, and herbicidal effect of diphenamid. Weed Sci. 18:692696.
3. Deli, J. and Warren, G. F. 1971. Relative sensitivity of several plants to diphenamid. Weed Sci. 19:7072.
4. Eshel, Y. and Katon, J. 1972. Effect of time of application of diphenamid on pepper, weeds, and disease. Weed Sci. 20.468471.
5. Eshel, Y. and Palevetch, D. 1973. Selective action of diphenamid and napropamide in pepper (Capsicum annuum L.) and weeds. Weed Res. 13:379384.
6. Frank, R. and Waywell, C. G. 1970. Tomato tolerance to two preemergence herbicides. J. Am. Soc. Hortic. Sci. 95:370377.
7. Genter, W. A. 1969. Phytotoxicity of demethylated analogs of diphenamid. Weed Sci. 17:284285.
8. Hoagland, D. R. and Arnon, D. I. 1950. The water culture method for growing plants without soil. California Agric. Exp. Stn. Circ. 347. 32 pp.
9. LeBaron, H. M. 1963. Potential use of diphenamid for weed control in horticultural crops of eastern Virginia. Proc. Northeast Weed Control Conf. 17:4450.
10. Lynch, R. and Sweet, R. D. 1971. Effect of environment on the activity of diphenamid. Weed Sci. 19:332337.
11. Nashed, R. B. and Ilnicki, R. D. 1968. The effect of diphenamid on the uptake and distribution of macronutrient elements in cabbage. Proc. Northeast Weed Control Conf. 22:500.
12. Noll, C. J. 1962. An evaluation of chemicals used for the weeding of tomatoes. Proc. Northeast Weed Control Conf. 16:144146.
13. Schultz, D. P. and Tweedy, B.G. 1972. The effect of light and humidity on absorption and degradation of diphenamid in tomatoes. J. Agric. Food Chem. 20:1013.
14. Schultz, D. P. and Tweedy, B. G. 1971. Uptake and metabolism of N,N-dimethyl-2,2-diphenylacetamide in resistant and susceptible plants. J. Agric. Food Chem. 19:3640.
15. Taylorson, R. B. 1965. Delayed preemergence weed control in seeded tomatoes and peppers. Weeds 13:306308.
16. Yaklich, R. W. and Scott, E. G. 1973. The intracellular localization of the herbicide diphenamid in corn root tip. Physiol. Plant 28:447451.

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