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Modelling the Economics of Controlling Nodding Broomrape (Orobanche cernua) in Sunflower (Helianthus annuus)

Published online by Cambridge University Press:  12 June 2017

L. García-Torres ,
M. Castejón-Muñoz ,
M. Jurado-Expósito  and
F. López-Granados
L. García-Torres
Affiliation:
CSIC Inst. of Sustainable Agric., Apdo. 4084, 14080 Córdoba Spain
M. Castejón-Muñoz
Affiliation:
CSIC Inst. of Sustainable Agric., Apdo. 4084, 14080 Córdoba Spain
M. Jurado-Expósito
Affiliation:
CSIC Inst. of Sustainable Agric., Apdo. 4084, 14080 Córdoba Spain
F. López-Granados
Affiliation:
CSIC Inst. of Sustainable Agric., Apdo. 4084, 14080 Córdoba Spain
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Abstract

Field studies were conducted at nine locations in southern Spain during 2 yr to develop models of nodding broomrape competition with sunflower and to establish economic thresholds. At each location, 30 to 35 small plots, each consisting of three sunflower plants, were chosen at random. The infection severity (BIS, no. of emerged broomrapes per sunflower plant) varied from 0 to 35. Plots were harvested at maturity to assess several sunflower and broomrape population variables. The percent sunflower yield reduction averaged over locations due to broomrape was estimated by the equation: % SYR = 1.7 x BIS (r2 = 0.92). Crop yield loss per BIS unit increased with the expected yield and was estimated to be about 25, 50, and 75 kg ha−1 for yields of 1000, 2000, and 3000 kg ha−1, respectively. A consistent relationship could be established between broomrape-infected sunflower yield, crop and broomrape biomass, and BIS parameters: SSYI = 0.2259 x PoBio/(1 + 0.0687 x BIS) (r2 = 0.7820). The BIS economic threshold was about 1.5 and 3.5 for control treatment cost of $ 40 ha−1 and potential yields of 2000 and 1000 kg ha−1, respectively.

Keywords

Nodding broomrape, Orobanche cernua Loefl. (= O. cumana Wallr.) ♯ ORACECommon sunflower, Helianthus annuus L.Competitionthresholdmodelsparasitic weedsORACE
Type
Weed Management
Information
Weed Science , Volume 44 , Issue 3 , September 1996 , pp. 591 - 595
Copyright
Copyright © 1996 by the Weed Science Society of America 

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References

Literature Cited

1. Anonymous. 1986. Statgraphics. Statistical Graphics System. STSC Inc. USA. 633 pp.Google Scholar
2. Castejón-Muñoz, M. 1989. Parasitismo del jopo (Orobanche ceruna, Loefl.; O. cumana Wallr) en girasol (Helianthus anmms L.), su respuesta al glifosato y variabilidad isoenzimática intraespecífica. . Facultad de Biología. Universidad de Sevilla (Spain). 99 pp.Google Scholar
3. Castejón-Muñoz, M., Romero-Muñoz, F., and García-Torres, L. 1990. Control of broomrape (Orobanche cernua) in sunflower (Helinthus annuusm L.) with glyphosate. Crop Prot. 9: 332–336.CrossRefGoogle Scholar
4. Cousens, R. 1985. A simple model relating yield loss to weed density. Ann. Appl. Biol. 107: 239–252.CrossRefGoogle Scholar
5. Cousens, R., Brain, P., O'Donovan, J. T., and O'Sullivan, P. A. 1987. The use of biologically realistic equations to describe the effects of weed density and relative time of emergence. Weed Sci. 35: 720–725.CrossRefGoogle Scholar
6. Cousens, R. C., Doyle, C. J., Wilson, B. J., and Cussans, G. W. 1986. Modelling the Economics of Controlling Avena fatua in Winter Wheat. Pestic. Sci. 17: 1–12.CrossRefGoogle Scholar
7. Cussans, G. W., Cousens, R. D., and Wilson, B. J. 1986. Thresholds for weed control-the concepts and their interpretation. Proc. Europ. Weed Res. Soc. Symposium on Economic Weed control, Pages 253–260.Google Scholar
8. Foy, C. L., Jain, R., and Jacobsohn, R. 1989. Recent approaches for chemical control of broomrape (Orobanche spp.). Rev. of Weed Sci. 4: 123–152.Google Scholar
9. García-Torres, L. 1994. Progress in Orobanche control, an overview. 3rd Intern. Workshop on Orobanche. Royal Tropical Institute (KIT), Amsterdam, The Netherlands, pp. 390–399.Google Scholar
10. García-Torres, L., Castejón-Muñoz, M., and López-Granados, F. 1994. The problem of Orobanche and its management in Spain. 3rd Intern. Workshop on Orobanche, Royal Tropical Institute (KIT), Amsterdam, The Netherlands, pp. 623–627.Google Scholar
11. García-Torres, L., López-Granados, F., and Castejón-Muñoz, M. 1994. Preemergence herbicides for the control Of (Orobanche cernua Loefl.) broomrape in sunflower (Helianthus annuus L.). Weed Res. 34: 395–402.CrossRefGoogle Scholar
12. Kropff, M. J. and Spitters, C.J.T. 1991. A simple model of crop loss by weed competition from early observations on relative leaf area of weeds. Weed Res. 31: 97–105.CrossRefGoogle Scholar
13. Martin, M.P.L.D. and Field, R. J. 1988. Influence of time of emergence of wild oat on competition with wheat. Weed Res. 28: 111–116.CrossRefGoogle Scholar
14. Maxwell, B.D., Wilson, M. V., and Radosevich, S. R. 1988. Population modeling approach for evaluating leafy spurge (Euphorbia esula) development and control. Weed Technol. 2: 132–138.CrossRefGoogle Scholar
15. Mesa-García, J. and García-Torres, L. 1994. A competition index por Orobanche crenata Forsk. effects on broadbean (Vicia faba L.). Weed Res. 25: 129–134.Google Scholar
16. Musselman, L. J. 1994. Taxonomy and spread of Orobanche. 3rd Internat. Workshop on Orobanche. Royal Tropical Inst. (KIT), Amsterdam, The Netherlands, pp. 27–35.Google Scholar
17. Parker, C. 1986. Scope of agronomic problems caused by Orobanche . In: Proc. of the Workshop on Biology and control of Orobanche. ter Borg, S. J. ed. LH/VPO, Wageningen, the Netherlands, Pages 11–17.Google Scholar
18. Parker, C. 1994. The present state of Orobanche problem. 3rd Internat. Workshop on Orobanche. Royal Tropical Institute (KIT), Amsterdam, The Netherlands, pp. 17–26.Google Scholar
19. Parker, C. and Riches, C. R. 1993. Parasitic Weeds of the World: Biology and Control. CAB International. London, Page 332.Google Scholar