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Amanda19 starts with ... I purchased 12 avocado trees 2 weeks ago (8x Wurtz & 4x Shephard)dwarf/semi dwarf variety, and over the past week almost all have black spots on them! At first I suspected sunburn, so moved them into a more sheltered location, but the black appears on both sides of the trunk/ branches on some. The black spots are mostly found around the base of the trunk, grafting point and some arms. A couple of branches have completely died back, gone black and softened. I suspect disease, but not sure what I should treat with? They are still in the original black bag I bought them in as I'm waiting for weather to cool to plant them in the ground. See attached pictures. Can anyone offer advice?
| About the Author Amanda19 Bindoon 18th March 2015 4:13pm #UserID: 11475 Posts: 2 View All Amanda19's Edible Fruit Trees |
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Brendan says... Hi Amanda19, gee they look sick! They may be too far gone:-( Try spraying your avo trees with: 30g (level tablespoon) of Copper Oxychloride mixed with 4½ litres water, and with a 'good' wetting agent added. Also,cut off the dead bits. Spray once a week for 3 or 4 weeks or until it's gone, good luck! | About the Author Brendan Mackay, Q 19th March 2015 3:52pm #UserID: 1947 Posts: 1722 View All Brendan's Edible Fruit Trees |
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Amanda19 says... Thanks Brendan. I ended up buying some Yates anti fungal solution which contains copper and targets anthracnose and black spots. I didn't get a chance to use it yesterday so was going to give it a crack today? would mixing straight copper be better do you think? Can't believe I've only had them a little over 2 weeks and they've taken such a turn! | About the Author Amanda19 Bindoon 19th March 2015 7:51pm #UserID: 11475 Posts: 2 View All Amanda19's Edible Fruit Trees |
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Original Post was last edited: 19th March 2015 7:51pm | |||||||
Brendan says... Hi Amanda19, yes that Yates product should work fine, please don't use 'straight copper' as in copper sulphate, as it will kill your trees. Don't forget to use a wetting agent like Spredmax or Chemwet, please don't use a soil wetter for the wetting agent. And spray once a week for 3 or 4 weeks, or more. | About the Author Brendan Mackay, Q 20th March 2015 8:50am #UserID: 1947 Posts: 1722 View All Brendan's Edible Fruit Trees |
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| About the Author 888 Endeavour hills 22nd January 2019 3:09pm #UserID: 19691 Posts: 1 View All 888's Edible Fruit Trees |
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