Frontiers of Agriculture in China >

2007 , Vol. 1 >Issue 1: 43 - 46

DOI: https://doi.org/10.1007/s11703-007-0007-x

Research article

Screening for plant extracts to control potato late blight

  • Shutong WANG 1 ,
  • Tongle HU 2 ,
  • Fengqiao ZHANG 2 ,
  • R. Forrer H. 3 ,
  • Keqiang CAO , 2
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  • 1 Bio-control Center of Plant Disease and Plant Pests of Hebei Province, College of Plant Protection, Agricultural University of Hebei, Baoding 071001, China, State Key Laboratory of Tropical Crop Biotechnology Institute of Bio-science and Biotechnology, Chinese Academy for Tropical Agricultural Sciences, Haikou 571101, China
  • 2 Bio-control Center of Plant Disease and Plant Pests of Hebei Province, College of Plant Protection, Agricultural University of Hebei, Baoding 071001, China
  • 3 Swiss Federal Research Station for Agroecology and Agriculture (FAL) Reckenholz, Zürich CH-8046, Switzerland

Received date: 04 Sep 2006

Accepted date: 20 Sep 2006

Copyright

2007 Higher Education Press
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Abstract

Six extracts from plant material (Galla chinensis, Potentilla erecta, Rheum rhabarbarum, Salviae officinalis, Sophora flavescens, and Terminalia chebula) were tested for controlling effects against the infection of Phytophthora infestans on detached potato leaves, seedlings, and tuber slices. On detached leaves, G. chinensis (2%), R. rhabarbarum (rhizome, 2%) and S. flavescens (2%) extracts showed a significant control effect, with a control efficacy of 96.67%, G. chinensis was the best. On seedlings R. rhabarbarum (rhizome, 2%) showed the best inhibiting effect, followed by S. flavescens (2%), T. chebula (1%), and G. chinensis (2%). The control efficacies were 91.67%, 75.00%, 70.24%, and 64.29%, respectively on the seventh day after inoculation. However, on potato slices, none of the plant extracts showed effective protection against infection and sporangia pro duction by P. infestans. The reason was analyzed and the potential for developing a natural fungicide based on these plant materials was discussed.

Key words： potato late blight; plant extracts; disease control

Cite this article

Shutong WANG , Tongle HU , Fengqiao ZHANG , R. Forrer H. , Keqiang CAO . Screening for plant extracts to control potato late blight[J]. Frontiers of Agriculture in China, 2007 , 1(1) : 43 -46 . DOI: 10.1007/s11703-007-0007-x

Acknowledgements

This research was supported by the funds from Science & Technology Department of Hebei Province (No. 01220173D). The authors are grateful to Mrs Tomke Musa and Mr. Reto Bachmann for their kind help.

References

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