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2021 1

2018 1

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Phytophthora infestans 1

Phytophthora nicotianae 1

fennel and tobacco rotation 1

infection behavior 1

late blight 1

mathematical model 1

potato 1

reactive oxygen species 1

retrospective analysis 1

vanillin 1

yield losses 1

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INTERFERENCE BY NON-HOST PLANT ROOTS AND ROOT EXUDATES IN THE INFECTION PROCESSES OF PHYTOPHTHORA NICOTIANAE

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 3,   Pages 447-459 doi: 10.15302/J-FASE-2021399

Abstract: Interactions between fennel (Foeniculum vulgare) roots/root exudates and Phytophthoranicotianae were investigated because of the known allelopathy between fennel and tobacco (P. nicotianaeThe roots of fennel attracted P. nicotianae zoospores and inhibited their motility andpathogens were found to be an important factor in the inhibition by fennel of infection by P. nicotianae

Keywords： fennel and tobacco rotation     infection behavior     Phytophthora nicotianae     reactive oxygen species    

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Development and testing of a weather-based model to determine potential yield losses caused by potato late blight and optimize fungicide application

Alexey FILIPPOV, Maria KUZNETSOVA, Alexander ROGOZHIN, Olga IAKUSHEVA, Valentina DEMIDOVA, Natalia STATSYUK

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 4,   Pages 462-468 doi: 10.15302/J-FASE-2018239

Abstract:

Late blight is one of the most important potato diseases. To minimize yield losses, various protective measures are used including fungicide application. Active use of fungicides results in a contamination of the environment. Therefore, crop protection strategies optimizing the number of treatments are of great interest. Using information about late blight development in an experimental potato field recorded over 30 seasons, a simulator to forecast yield losses caused by the disease was developed based on the number of 5-d periods favorable for reinfection of plants during a vegetation season. The simulator was successfully verified using independent data on the disease development from nine unprotected potato fields in the Netherlands and Germany. The average difference between the calculated and real yield losses did not exceed 5%. Using the simulator and weather data for a period of 2007-2017, yield losses were calculated for several areas of the Bryansk, Tambov, and Orenburg Regions of Russia. The results revealed differences in disease development between these regions and may be used to develop recommendations for a frequency of fungicide applications according to the regional risk of epidemics, leading to a significant reduction in fungicide use.

Keywords： potato     late blight     Phytophthora infestans     yield losses     retrospective analysis     mathematical model    

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Title Author Date Type Operation

INTERFERENCE BY NON-HOST PLANT ROOTS AND ROOT EXUDATES IN THE INFECTION PROCESSES OF PHYTOPHTHORA NICOTIANAE

Journal Article

Development and testing of a weather-based model to determine potential yield losses caused by potato late blight and optimize fungicide application

Alexey FILIPPOV, Maria KUZNETSOVA, Alexander ROGOZHIN, Olga IAKUSHEVA, Valentina DEMIDOVA, Natalia STATSYUK

Journal Article