Skip to main content Accessibility help
×
Home

Herbicide Effects on Parasitism of Tomato by Hemp Broomrape

  • A. R. Saghir (a1), C. L. Foy (a2) and K. M. Hameed (a3)

Abstract

Thirteen soil-incorporated herbicides, mainly of the dinitroaniline and carbamate groups, were evaluated in the greenhouse for selective control of hemp broomrape (Orobanche ramosa L.) in tomato (Lycopersicon esculentum Mill. ‘Rutgers’). Hemp broomrape readily parasitized tomato roots and competed vigorously with the host. Shoots of the parasite emerged within 6 weeks after inoculation. Herbicides at 0.1 to 10.0 ppmw, with one exception, significantly reduced shoot dry weight of tomato measured at 10 weeks after treatment, in comparison with untreated, noninoculated controls. Generally, the degree of inhibition of establishment of the parasite was correlated with herbicidal injury to tomato. None of the treatments prevented the establishment of the parasite without causing severe crop injury. However, N-n-propyl-N-tetrahydrofurfuryl-4-trifluoromethyl-2,6-dinitroaniline (CGA-14397, ER-9063) at 3.3 and 6.6 ppmw exhibited some degree of selectivity as indicated by relative shoot dry weights of the host and parasite. Activated charcoal applied as a root dip on tomato or in soil admixtures prior to transplanting had no effect on parasitism and growth of hemp broomrape.

Copyright

References

Hide All
1. Ahrens, J. G. 1965. Detoxification of simazine and atrazine treated soil with activated charcoal. Proc. Northeast. Weed Contr. Conf. 19:364365.
2. Anonymous. 1970. Agricultural Research Council, Weed Research Organization. Annotated bibliography of selected references on broomrape (Orobanche spp.), 1964–1970 (No. 23) Oxford, England. 18 p.
3. Anonymous. 1972. Branched broomrape. Agrichemical Age 15:23.
4. Andersen, A. H. 1968. The inactivation of simazine and linuron in soil by charcoal. Weed Res. 8:5860.
5. Coffee, D. L. and Warren, G. F. 1969. Inactivation of herbicides by activated carbon and other adsorbents. Weed Sci. 17:1619.
6. Durbin, R. D. 1953. Hosts of the branched broomrape and its occurrence in California. Plant Dis. Rep. 37:136137.
7. Garman, H. 1963. The broomrapes. Bull. Kentucky Agr. Exp. Sta. 105:132.
8. Hoagland, D. R. and Arnon, D. I. 1950. The water culture method for growing plants without soil. California Agr. Exp. Sta., Berkeley, Cir. 347. 32 p.
9. Jordan, P. D. and Smith, L. W. 1971. Adsorption and deactivation of atrazine and diuron by charcoals. Weed Sci. 19:541544.
10. Kasasian, L. 1971. Orobanche spp. PANS 17:3541.
11. Kasasian, L. and Parker, C. 1971. The effect of numerous herbicides on the germination of Orobanche aegyptiaca and Striga Hermontheca . PANS 17:471481.
12. Saghir, A. R. and Abu-Shakra, S. 1971. Effect of diphenamid and trifluralin on the germination of Orobanche seeds in vitro . Weed Res. 11:7476.
13. Stout, G. L. 1938. A recurrence of broomrape, Orobanche ramosa L., on tomato plants in California. Bull. Dep. Agr. California 27:166170.
14. Voevodin, A. V. and Petunova, A. A. 1970. The nature of herbicide action. Zashch. Rast. 15(5):2930.
15. Wilhelm, S., Benson, L. C., and Sagen, J. E. 1958. Studies on the control of broomrape on tomatoes. Soil fumigation by methyl bromide is a promising control. Plant Dis. Rep. 42:645651.
16. Zahran, M. K. 1970. Satisfactory control of Orobanche crenata in broad beans by soil fumigation in the U.A.R. Proc. 10th Brit. Weed Contr. Conf. 2:680684.

Herbicide Effects on Parasitism of Tomato by Hemp Broomrape

  • A. R. Saghir (a1), C. L. Foy (a2) and K. M. Hameed (a3)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed