Australasian Plant Pathology (1990) 19, 126-127

P.A. Margarey, T.J. Wicks and M.F. Wachtel (1990)
Phosphonic (phosphorous) acid controls Plasmopara viticola the cause of downy mildew of grapevines
Australasian Plant Pathology 19 (4), 126-127
Abstract: In 1986 phosphorous acid (as Foli-R-Fos 200) at 600 ml/litre gave effective post- but not pre-infection control of P. viticola in grapes in greenhouse and field tests in South Australia. Control equivalent to Ridomil MZ 720 WP (metalaxyl + mancozeb) was achieved up to 17 d post- infection, reducing sporulation and hastening oilspot necrosis. It is suggested that a tank-mix with copper oxychloride offers potential to complement existing fungicides in Australian anti-resistance management strategies. This paper was presented at the Phosphonic (phosphorous) acid workshop held at the University of Queensland, Australia, on 3 Jul., 1989.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Plasmopara viticola	Grapevine (Vitis)	Australia (South+SE)