Mode of action
The fungus Ampelomyces quisqualis is a naturally occurring hyper parasite of powdery mildews. This parasitism reduces growth and may kill the mildew colony, the micro parasite directly penetrate the walls of hypahe, conidiophores and immature cleastothesia, but may be unable to infect mature cleastothesia. Approximately in 7 – 10 days, microparasites spread within the hyhae the mildew colony without killing it. Thereafter, the process of pycnidial formation begins and complete within 2 – 4 days, infected cells generally die soon after pycnidial formation begins. Repeated applications of the micro parasite are generally necessary and high humidity and rain fall aid in spread to developing mildews colonies. In adverse climatic condition i.e. low humidity & low temperature /pycnidial which will be produced from the infected mildew are more resistant and persist in the environment for relatively long period at least into next season. These in turn may give rise to viable spore when condition becomes favorable again.
Wide range of powdery mildew affected crops like Cucurbits, Grapes, Apple, Peas, Beans, Tomato, Pulses, Cumin, Chilies, Coriander, Mango, Ber, Peas, Strawberry, Medicinal and Aromatic crops and Roses.
Mainly powdery mildew but also parasitic on Botrytis cinerea, Alternaria solani, Colletotrichum, Coccodes and Cladosporium cucumerinum.
Method of application and dosage:
- Foliar Application – At the time of emergence of disease, dissolved 5 – 10 ml Milgo per liter of water and give 2 to 3 sprays on the standing crop at 10 15 days interval.
- Compatible with organic manures and bio-fertilizers.
- Don’t mix with chemical fungicide.
- It can be used alternatively with insecticides.
- Avoid mixing with Bordeaux mixture, Antibiotics and streptocycline.