Regional spore dispersal as a factor in disease risk warnings for potato late blight: a proof of concept

Research output: Chapter in Book/Report/Conference proceedingConference paperAcademic

Abstract

This study develops and tests novel approaches that significantly reduce the fungicide input necessary for potato late blight control while maintaining the required high level of disease control. The central premise is that fungicide inputs can be reduced by reducing dose rates on more resistant cultivars, by omitting applications on days when conditions are unsuitable for atmospheric transport of viable sporangia and by adapting the dose rate to the length of the predicted critical period. These concepts were implemented and tested in field experiments in 2007 and 2008 in the North Eastern potato growing region in the Netherlands which is known for its high potato late blight disease pressure. Field experiments contained three starch potato cultivars, representing a range in resistance to potato late blight from susceptible to highly resistant, and a series of decision rules determining spray timing and incorporating an increasing number of variables such as: remaining fungicide protection level, critical weather, atmospheric capacity for viable transport of sporangia and the length of the predicted critical period. The level of cultivar resistance was used to reduce the dose rate of the preventive fungicide Shirlan (a.i. fluazinam) by default. A 50% – 75% reduction of the fungicide input proved possible in both years without adverse consequences to the crop or yield. The principles can be used in many decision contexts, but further work is needed to test and refine the methods before it can be used in practice
Original languageEnglish
Title of host publicationProceedings of the Eleventh EuroBlight Workshop, Hamar, Norway, 28-31 October 2008
EditorsH.T.A.M. Schepers
Place of PublicationLelystad, The Netherlands
PublisherApplied Plant Research, AGV Research Unit
Pages91-96
Volume13
Publication statusPublished - 2009
EventEleventh EuroBlight Workshop - Hamar, Norway
Duration: 28 Oct 200831 Oct 2008

Workshop

WorkshopEleventh EuroBlight Workshop
CountryNorway
CityHamar
Period28/10/0831/10/08

Fingerprint

spore dispersal
Phytophthora infestans
fungicides
sporangia
cultivars
dosage
potato starch
Netherlands
disease control
weather
testing
potatoes
crops

Cite this

Kessel, G. J. T., Skelsey, P., Holtslag, A. A. M., Moene, A. F., & van der Werf, W. (2009). Regional spore dispersal as a factor in disease risk warnings for potato late blight: a proof of concept. In H. T. A. M. Schepers (Ed.), Proceedings of the Eleventh EuroBlight Workshop, Hamar, Norway, 28-31 October 2008 (Vol. 13, pp. 91-96). Lelystad, The Netherlands: Applied Plant Research, AGV Research Unit.
Kessel, G.J.T. ; Skelsey, P. ; Holtslag, A.A.M. ; Moene, A.F. ; van der Werf, W. / Regional spore dispersal as a factor in disease risk warnings for potato late blight: a proof of concept. Proceedings of the Eleventh EuroBlight Workshop, Hamar, Norway, 28-31 October 2008. editor / H.T.A.M. Schepers. Vol. 13 Lelystad, The Netherlands : Applied Plant Research, AGV Research Unit, 2009. pp. 91-96
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abstract = "This study develops and tests novel approaches that significantly reduce the fungicide input necessary for potato late blight control while maintaining the required high level of disease control. The central premise is that fungicide inputs can be reduced by reducing dose rates on more resistant cultivars, by omitting applications on days when conditions are unsuitable for atmospheric transport of viable sporangia and by adapting the dose rate to the length of the predicted critical period. These concepts were implemented and tested in field experiments in 2007 and 2008 in the North Eastern potato growing region in the Netherlands which is known for its high potato late blight disease pressure. Field experiments contained three starch potato cultivars, representing a range in resistance to potato late blight from susceptible to highly resistant, and a series of decision rules determining spray timing and incorporating an increasing number of variables such as: remaining fungicide protection level, critical weather, atmospheric capacity for viable transport of sporangia and the length of the predicted critical period. The level of cultivar resistance was used to reduce the dose rate of the preventive fungicide Shirlan (a.i. fluazinam) by default. A 50{\%} – 75{\%} reduction of the fungicide input proved possible in both years without adverse consequences to the crop or yield. The principles can be used in many decision contexts, but further work is needed to test and refine the methods before it can be used in practice",
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Kessel, GJT, Skelsey, P, Holtslag, AAM, Moene, AF & van der Werf, W 2009, Regional spore dispersal as a factor in disease risk warnings for potato late blight: a proof of concept. in HTAM Schepers (ed.), Proceedings of the Eleventh EuroBlight Workshop, Hamar, Norway, 28-31 October 2008. vol. 13, Applied Plant Research, AGV Research Unit, Lelystad, The Netherlands, pp. 91-96, Eleventh EuroBlight Workshop, Hamar, Norway, 28/10/08.

Regional spore dispersal as a factor in disease risk warnings for potato late blight: a proof of concept. / Kessel, G.J.T.; Skelsey, P.; Holtslag, A.A.M.; Moene, A.F.; van der Werf, W.

Proceedings of the Eleventh EuroBlight Workshop, Hamar, Norway, 28-31 October 2008. ed. / H.T.A.M. Schepers. Vol. 13 Lelystad, The Netherlands : Applied Plant Research, AGV Research Unit, 2009. p. 91-96.

Research output: Chapter in Book/Report/Conference proceedingConference paperAcademic

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T1 - Regional spore dispersal as a factor in disease risk warnings for potato late blight: a proof of concept

AU - Kessel, G.J.T.

AU - Skelsey, P.

AU - Holtslag, A.A.M.

AU - Moene, A.F.

AU - van der Werf, W.

PY - 2009

Y1 - 2009

N2 - This study develops and tests novel approaches that significantly reduce the fungicide input necessary for potato late blight control while maintaining the required high level of disease control. The central premise is that fungicide inputs can be reduced by reducing dose rates on more resistant cultivars, by omitting applications on days when conditions are unsuitable for atmospheric transport of viable sporangia and by adapting the dose rate to the length of the predicted critical period. These concepts were implemented and tested in field experiments in 2007 and 2008 in the North Eastern potato growing region in the Netherlands which is known for its high potato late blight disease pressure. Field experiments contained three starch potato cultivars, representing a range in resistance to potato late blight from susceptible to highly resistant, and a series of decision rules determining spray timing and incorporating an increasing number of variables such as: remaining fungicide protection level, critical weather, atmospheric capacity for viable transport of sporangia and the length of the predicted critical period. The level of cultivar resistance was used to reduce the dose rate of the preventive fungicide Shirlan (a.i. fluazinam) by default. A 50% – 75% reduction of the fungicide input proved possible in both years without adverse consequences to the crop or yield. The principles can be used in many decision contexts, but further work is needed to test and refine the methods before it can be used in practice

AB - This study develops and tests novel approaches that significantly reduce the fungicide input necessary for potato late blight control while maintaining the required high level of disease control. The central premise is that fungicide inputs can be reduced by reducing dose rates on more resistant cultivars, by omitting applications on days when conditions are unsuitable for atmospheric transport of viable sporangia and by adapting the dose rate to the length of the predicted critical period. These concepts were implemented and tested in field experiments in 2007 and 2008 in the North Eastern potato growing region in the Netherlands which is known for its high potato late blight disease pressure. Field experiments contained three starch potato cultivars, representing a range in resistance to potato late blight from susceptible to highly resistant, and a series of decision rules determining spray timing and incorporating an increasing number of variables such as: remaining fungicide protection level, critical weather, atmospheric capacity for viable transport of sporangia and the length of the predicted critical period. The level of cultivar resistance was used to reduce the dose rate of the preventive fungicide Shirlan (a.i. fluazinam) by default. A 50% – 75% reduction of the fungicide input proved possible in both years without adverse consequences to the crop or yield. The principles can be used in many decision contexts, but further work is needed to test and refine the methods before it can be used in practice

M3 - Conference paper

VL - 13

SP - 91

EP - 96

BT - Proceedings of the Eleventh EuroBlight Workshop, Hamar, Norway, 28-31 October 2008

A2 - Schepers, H.T.A.M.

PB - Applied Plant Research, AGV Research Unit

CY - Lelystad, The Netherlands

ER -

Kessel GJT, Skelsey P, Holtslag AAM, Moene AF, van der Werf W. Regional spore dispersal as a factor in disease risk warnings for potato late blight: a proof of concept. In Schepers HTAM, editor, Proceedings of the Eleventh EuroBlight Workshop, Hamar, Norway, 28-31 October 2008. Vol. 13. Lelystad, The Netherlands: Applied Plant Research, AGV Research Unit. 2009. p. 91-96