9 responses |
| About the Author vanl Adelaide 4th January 2012 12:25am #UserID: 6228 Posts: 2 View All vanl's Edible Fruit Trees |
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| About the Author David1 Perth 4th January 2012 1:35am #UserID: 6019 Posts: 26 View All David1's Edible Fruit Trees |
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denise says... Often the problems of leaf fall can mean trouble elsewhere. The roots may have been affected by fungal attack or there could be collar rot. Check the bark at ground level by careful scraping to see if the bark is green and alive. If it is dead then you can cut the tree out and possibly throw the infected wood on a fire. Sometimes it happens so quick that nothing can be done and other times you can get to fixing it. It may be killed down below weeks before the top wilts or drops leaves. A horticulture supply store may have a product to fix it if you can describe the symptoms but the products are usually in commercial quantities and can at times be quite expensive. Hope David can be more helpful. | About the Author 4th January 2012 9:02am #UserID: 0 Posts: View All 's Edible Fruit Trees |
Vanl says... Thank you for your replies. The tree started loosing some leaves about a couple of year ago. The bark when scrapped off are still green inside. The difference about this tree compared to my other mango tree is the scale-like symptoms on the bark and trunks which I have no idea what they are. My other healthy mango trees are smooth when green and when wooded are also smooth. There are some young growth from mostly unaffected areas. My father in law thinks its some kind of disease which needs spraying but I need to know exactly what it is so that I know the correct spray to buy. | About the Author 4th January 2012 10:59am #UserID: 0 Posts: View All 's Edible Fruit Trees |
| About the Author 4th January 2012 3:01pm #UserID: 0 Posts: View All 's Edible Fruit Trees |
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David says... Vani, If there is fresh growth on unaffected areas of the tree, then I'd prune off the infected parts, then spray with copper oxychloride and mangozeb mixture. It would be an idea to paint over the ends of the pruned branches with paint to stop reinfection at those points in case it is a bacterial infection. The wrinkled leaf in the photo looks like a trace element deficiency, so I'd give it a dressing of a complete flowers & fruit fertalizer too. Also check for anything that may cause the soil where this tree is to be higher in ph than where your other tree is, such as a nearby limestone wall as an unexpected high pH can cause mineral deficiency. | About the Author David1 Perth 5th January 2012 3:57pm #UserID: 6019 Posts: 26 View All David1's Edible Fruit Trees |
Vanl says... Thanks David. After exhaustive searching, I came to the conclusion that is might be Red Rust. I've cutted back most of its branches now where infections are bad and about the spray it with copper oxycloride soon after letting the wounds healed up. Does it harm the tree if I also spray with mancozeb at the same time? I think mineral deficiency was because of a Bangalow palm that what growing adjacent to it which since has been removed. | About the Author Adelaide 5th January 2012 5:40pm #UserID: 0 Posts: View All 's Edible Fruit Trees |
David says... Vani, here is a link referred to by Brendan elcewhere in this forum where the Mangozeb/copper oxychloride mix is recommended for anthracnose. http://www.abc.net.au/local/videos/2011/05/05/3208266.htm I have been using it without adverse reaction. | About the Author David1 Perth 6th January 2012 1:24am #UserID: 6019 Posts: 26 View All David1's Edible Fruit Trees |
| About the Author Treysd3 Thailand 2nd December 2012 1:25pm #UserID: 7483 Posts: 1 View All Treysd3's Edible Fruit Trees |
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| About the Author Brendan Mackay, Q 3rd December 2012 9:58am #UserID: 1947 Posts: 1722 View All Brendan's Edible Fruit Trees |
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