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Avocardo Help starts with ... Hi I need help with trying to save my old Avocado tree. over the past 2 years it has stopped fruiting and the leaves have gone brown and falling off. End of Branches are going Black. Thanks in advance. Matt
| About the Author Avocardo Help Wandi 29th August 2018 9:35am #UserID: 18899 Posts: 1 View All Avocardo Help's Edible Fruit Trees |
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Luke :) says... I would think it has something to do with the roots, if you dont think it is root rot maybe something is attacking the roots? I would get digging and investigate. Is there clay where you are maybe the feeder roots have reached the clay, which could cause root rot as well as a potential PH problem. | About the Author Luke :) 5089 12th September 2018 9:16pm #UserID: 14508 Posts: 24 View All Luke :)'s Edible Fruit Trees |
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Original Post was last edited: 13th September 2018 12:29am | ||||||||||
Markmelb says... Ive read that as little as 3 days of flooded land can cause root rot and kill an Avo - even the original Hass died of Phytophthora after 76 years. https://en.wikipedia.org/wiki/Hass_avocado | About the Author Markmelb MOUNT WAVERLEY,3149,VIC 13th September 2018 6:38pm #UserID: 7785 Posts: 1192 View All Markmelb's Edible Fruit Trees |
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jakfruit etiquette says... I worked on an Avo farm in Nth NSW. To combat root problems they grew the trees on slight mounds, mulched heavily with woodchips to create a permanent composting biological layer. Composted chicken manure is also effective against Phytophora root rot, as is Phos acid. I would try to get the soil biological activity increased. ps is the soil salty ?? | About the Author jakfruit etiquette vic 13th September 2018 10:04pm #UserID: 5133 Posts: 915 View All jakfruit etiquette's Edible Fruit Trees |
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About the Author Luke :) 5089 17th September 2018 3:29am #UserID: 14508 Posts: 24 View All Luke :)'s Edible Fruit Trees |
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About the Author Markmelb MOUNT WAVERLEY,3149,VIC 17th September 2018 8:20am #UserID: 7785 Posts: 1192 View All Markmelb's Edible Fruit Trees |
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About the Author jakfruit etiquette vic 17th September 2018 9:34pm #UserID: 5133 Posts: 915 View All jakfruit etiquette's Edible Fruit Trees |
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Markmelb says... jackfruit - what do you think of using Richgrow organic Fert made from Bat Guano? On Avos, Citrus (Fingerlimes) or did i read somewhere to treat fingerlimes with Native Fert low in Phos? - im experimenting with it to push a marcotted Wampi that refuses to flower that i cinctured a branch on as well last year? | About the Author Markmelb MOUNT WAVERLEY,3149,VIC 19th September 2018 9:35am #UserID: 7785 Posts: 1192 View All Markmelb's Edible Fruit Trees |
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jakfruit etiquette says... Hi Mark, if you mean Mega Booster Phosphorus Organic Fertiliser its ZeroN15PZeroK. Not sure if the ageing process of the bat guano is comparable to composting. 15% P seems quite high to use on its own. For Citrus, I was advised to go for low P of 1% to 2% to avoid Phosphorus induced Iron deficiency. There is plenty of composted chicken fert pellets readily available. Same with the pigeon poo, its more about the composting than the NPK. https://www.google.com.au/search?source=hp&ei=jzWiW4mtKMTg-Ab-0qu4Aw&q=composted+chicken+manure+phytophora&oq=composted+chicken+manure+phytophora&gs_l=psy-ab.3..33i160k1.1780.26793.0.28219.39.35.0.3.3.0.518.6123.2-5j4j5j2.16.0....0...1c.1.64.psy-ab..20.19.6209.0..0j35i39k1j0i131k1j0i3k1j0i22i30k1j33i21k1.0.P7Z--YvPELY | About the Author jakfruit etiquette vic 19th September 2018 9:45pm #UserID: 5133 Posts: 915 View All jakfruit etiquette's Edible Fruit Trees |
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Markmelb says... Jackfruit - thanks for research - yes that the one im using sparingly - is a medium release - not using on Citrus but some plants like Eugenias like a bit of P This trial of worm castings on Avos was of interest over Aliette http://www.avocadosource.com/WAC2/WAC2_p143.pdf | About the Author Markmelb MOUNT WAVERLEY,3149,VIC 20th September 2018 8:28am #UserID: 7785 Posts: 1192 View All Markmelb's Edible Fruit Trees |
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Luke :) says... Awesome info Jackfruit, but I'm just not sure how well certain species of bacteria will work against Phytophthora, if there is a large population of it to begin with. I'm sure composted manure has some measurable effect, to be sure!...but I reckon you need to throw in a 'grenade' first like Hydrogen Peroxide to disturb the Phytophthora enough to allow the beneficial bacteria from the composted chicken manure to take hold faster and more effectively. Or it may be negligible since chicken manure high in Phos is the 'grenade' along with the beneficial bacteria from the chicken manure itself, creating two pronged attack against Phytophthora. ------------- As I said in the "e;Avocado leaves going brown"e; thread, I use Hydrogen Peroxide for root rot diseases, but only on a small scale, like for plants in pots. Where I'll soak the whole media in Hydrogen Peroxide, then once inert and dry from any residual Hydrogen Peroxide, I'll apply a beneficial bacterial product like "e;NTS Nutri-Life Micro-Force"e; as a soak to repopulate the inert media. I think for ground applications high Phos related products would be better for the bacterial community than Hydrogen Peroxide. Hope this helps with your root rot problems. | About the Author Luke :) 5089 7th October 2018 9:34pm #UserID: 14508 Posts: 24 View All Luke :)'s Edible Fruit Trees |
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jakfruit etiquette says... Hi Luke, I remember that Hydrogen Peroxide is put thru irrigation(drippers?) on cucumber crops in Japan as a preventative treatment. Yes, it would be better to start out from day one with beneficial microbes, and techniques to promote them, than to try to correct disease problems when symptoms are severe. | About the Author jakfruit etiquette vic 11th October 2018 10:15pm #UserID: 5133 Posts: 915 View All jakfruit etiquette's Edible Fruit Trees |
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