Protector hml also received registration for Downy Mildew control in April 2019 at 1% and 2% concentration (depending on disease challenge) in combination with 22 g elemental copper(sourced from a cuprous oxide fungicide) per litre of Protector hml. Results from 2015-18 Powdery Mildew Trials If using Nordox WG75, this would mean 30g/100L for a 1% rate of Protector hml. Protector hml received registration for Powdery Mildew control in April 2019 at 1% concentration in combination with 22 g elemental copper (sourced from a cuprous oxide fungicide). Protector hml at 2% concentration has been registered for botrytis control since 2003.
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It works by spreading sulphur over an area five times larger than what it would normally achieve in solution (slides 6 and 7 of the power point presentation in the link below) and gathering spores together (slide 8) compared with another potassium soap with free vegetable oil (slide 9). There is extensive research on its use as a fungicide however it is mainly used in the grape industry as an adjuvant with sulphur for the control of powdery mildew. Protector hml is registered by the Ministry for Primary Industries, Agricultural Chemicals Veterinary Medicines Group (ACVM). Four major issues have been eliminated because of this: an off flavour in juices close to harvest, the inherent risk of any oil (mineral, vegetable or fish) when combined with sulphur causing phytotoxicity, the effects of any oil on plant growth and free oil falling out of solution in sprayers because no emulsifier is present. Protector hml is completely saponified and does not contain free vegetable oils. Unlike other potassium soaps it has no insecticidal ability but it has profound fungicidal, fungistatic and adjuvant properties. Protector hml has a long history of excellent plant safety. All ingredients involved in the manufacture of Protector hml are food or food grade. Protector hml is a potassium based liquid soap containing specific complexes.
General information Food grade ingredients Other technical publications/papers to assist.New Zealand Registration and safety information.
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