Preventively, I use this high-power formula which has six fungus-fighting
organic ingredients. As a ratio, mix:
--1-2 cups compost tea (a shovelful of FINISHED compost put into an old
pillowcase and steeped in a deep bucket of water until the color of tea),
--1 Tbs insecticidal soap,
--1 Tbs horticultural oil,
--1 Tbs liquid seaweed,
--1 Tbs sulfured or blackstrap molasses,
--1 Tbs apple cider vinegar,
--1 rounded Tbs baking soda (sodium or potassium bicarbonate, potassium is
--1/4 cup garlic tea (3 BULBS of garlic, pureed, strained, and diluted in 5
liters (about 1 gallon) water),
--5 liters (about 1 gallon) water.
Mix everything VERY WELL into the 5 liters of water, adding the vinegar last
so it doesn't bubble over when it comes into contact with the baking soda.
Strain only if necessary. Spray during the cool part of the day, fine-misting
lightly on tops and bottoms of leaves, avoiding fruit and soil. Use sparingly;
test for tolerance first. Clean sprayer well after use. The mix keeps for a
week and is best used as a weekly preventive spray but also helps as a
curative. It also serves as an excellent foliar feed and clears plants of many
insect pests. At the above ratio, the formula covers about 1000 square feet
in a fine-misting sprayer.
I also sometimes spray straight 3% hydrogen peroxide or add it to the above
mix in lieu of water. 1 gallon (about 5 liters) of peroxide covers about 1500
square feet if used in a fine mist sprayer. Spray every week --every 3 days
during wet weather. It does no harm to plants or soil if used at 3% solution.
Also, prune for good air circulation, water early in the day, remove and
destroy infected tissues. As a last resort, you can also spray bordeaux
mixture or sulfur, but test for toxicity first.
DOWNY MILDEW DISEASE, GRAPES - AUSTRALIA (SOUTH WEST)
A ProMED-mail post
Disease fears for South West vines
Fears are rising that the South West wine region could be infected
with the potentially devastating downy mildew disease. It follows the
discovery of an outbreak in the Swan Valley. Eleven properties have
now been quarantined in the Swan valley and sampling of suspect
properties continues. Agriculture WA [West Australia] officers are
expected to start inspecting vines in the South West wine [production]
region. The Margaret River Wine Industry Association has written to
its members outlining the dangers of the disease and advising them to
apply preventive fungicide. Simon Robertson, viticulturist says the
disease is easily transported by wind and [by the] movement of soil
and vehicles and would eventually reach the South West region.
-- dawn aka gardenbetty
Garden Resources of Washington Washington, D.C. firstname.lastname@example.org
We will be known by the tracks we leave behind... óDakota proverb
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