44 responses |
| About the Author Rick SE Queensland 23rd January 2008 10:40am #UserID: 602 Posts: 4 View All Rick's Edible Fruit Trees |
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Correy says... You can always try the Wild may fruit fly control systems however if you can there is nothing like covering your guavas with a fruit fly proof net when they are about to harvest. That is what I am planning to do. People have left some great comments relating to fruit fly and the guava tree here | About the Author Correy Woolloongabba, QLD 2nd February 2008 2:07pm #UserID: 3 Posts: 493 View All Correy's Edible Fruit Trees |
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| About the Author Rick SE Queensland 2nd February 2008 7:04pm #UserID: 602 Posts: 4 View All Rick's Edible Fruit Trees |
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Scott G says... Hi Rick That looks like a very destructive problem you have there. My guava used to get some fruit fly attacks (before I netted it) and the damage could hardly be seen before the fruit ripened. So I would doubt your damage is from them. I think this could be Anthracnose. It has been a wet period which is what the disease likes. So if that is what it is then you need to keep the tree drier. More sun and wind are needed. Ok so stopping the rain is tricky :) but you could remove things that shade the tree, and things that act as a wind break for it. Also thin out the branches for better airflow through the tree. If you water it then do it in the morning so the sun can dry the tree off fast during the day. Water only the ground (not the leaves). Affected parts of the tree need to be removed and disposed of and not left on the ground at the base of the tree. You may consider regular applications of fungicide. | About the Author Scott G The Gold Coast 3rd February 2008 1:07am #UserID: 44 Posts: 117 View All Scott G's Edible Fruit Trees |
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Rick says... Hi Scott, I intend to cut all the trees back considerably when I get a dry period. That should help the airflow.I will start a spray program for next season as well. I already spray my mangoes for anthracnose so I will just do the same for these. I took some samples into the local co-op the other day and they thought it was fruit fly. To be sure next year I will spray for both. Rick | About the Author Rick SE Queensland 3rd February 2008 8:13am #UserID: 602 Posts: 4 View All Rick's Edible Fruit Trees |
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SARATH says... Spray periodically with insecticide once the fruit start setting. In East Malaysia they cover the fruit with a kind of paper leaving an opening at the bottom for the heat to escape. This protect the fruit from being attacked by fruit flies. This week I plucked my first fruit in Sydney and so far no problem. | About the Author SARATH AUSTRALIA 6th May 2008 7:59pm #UserID: 932 Posts: 1 View All SARATH's Edible Fruit Trees |
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Rick says... Thanks Sarath, I had just one fruit in a mesh type bag and that remained sting free so i guess it is fruit fly, they just attck the fruit so early on. Up here ther always seems to be some flowers on the trees but i guess tht is more due to the funny weather of the last few years. i have a mango in flower at present and also a stoneruit tree! Rick | About the Author Rick SE Queensland 12th May 2008 5:30pm #UserID: 602 Posts: 4 View All Rick's Edible Fruit Trees |
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Godwin says... Has anybody identified the real problem in the picture given above? I don't believe that it is the fruit fly causing that problem and neither can it be anthracnose. Please gurus can you identify the real causal agent, because here in Zambia this problem is very serious I also need information on controlor pest management information. | About the Author Godwin ZAMBIA 6th August 2009 7:51pm #UserID: 2628 Posts: 2 View All Godwin's Edible Fruit Trees |
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Original Post was last edited: 6th August 2009 9:43pm | ||||||||||
Speedy says... It's most likely this little bug(ger) http://www.brisbaneinsects.com/brisbane_bugs/GreenCoonBugs.htm It causes a problem with growing tip of papaya plants too. A contant frustration on the sandy soils close to the coast while trying to grow papaya. They'd suck the soft upper parts of the main stem and petioles causing the growing tip to colapse and die off. Grrrrr! >:-# | About the Author Swan Hill, Nth Vic 6th August 2009 10:08pm #UserID: 0 Posts: View All 's Edible Fruit Trees |
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| About the Author amanda19 Geraldton. WA 6th August 2009 11:12pm #UserID: 2309 Posts: 4607 View All amanda19's Edible Fruit Trees |
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| About the Author amanda19 Geraldton. WA 7th August 2009 1:02am #UserID: 2309 Posts: 4607 View All amanda19's Edible Fruit Trees |
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amanda says... Hi again - this link has a good picture of scab on a passionfruit...(but scab affects other plants as well) ... looks pretty similar do u think? http://www.annettemcfarlane.com/diseaseID.htm And some info from qld dpi: What causes the scabby appearance of fruit in NSW in wet seasons? The fungi Cladosporium herbarum and Cladosporium oxysporum cause the scabby appearance. Scab was sometimes a problem in cooler areas in moist shady pockets of the plantation but can now be found in more exposed plantings in the Tweed region. In the past, infections were generally not serious enough to warrant treatment but recently the problem has escalated in some areas. Attempts to control scab using a range of fungicides have been unsuccessful to date (see Problem solver, page 17 of this update | About the Author amanda19 Geraldton. WA 7th August 2009 10:45am #UserID: 2309 Posts: 4607 View All amanda19's Edible Fruit Trees |
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Original Post was last edited: 7th August 2009 10:50am | ||||||||||
Godwin says... I am not yet convinced that the problem is caused by scab. I was almost accepting it but when I closely looked at scap symptoms on guavas it did not much with one in the picture.This problem is more of entomological than pathological. We shall plate it and see the culture and examine the spore. | About the Author 7th August 2009 5:30pm #UserID: 0 Posts: View All 's Edible Fruit Trees |
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amanda says... No prob's Godwin - although passionfruit are a hard shell fruit and guava soft - so it will not look the same. Interesting how the fruit (above) has actually ruptured open - this makes me think of a fungus more than anything - they are good at splitting bark, fruit etc (human skin too - just ask a tinea sufferer!) Good luck with your search! :) | About the Author amanda19 Geraldton. WA 7th August 2009 7:15pm #UserID: 2309 Posts: 4607 View All amanda19's Edible Fruit Trees |
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| About the Author Godwin ZAMBIA 8th August 2009 7:30pm #UserID: 2628 Posts: 2 View All Godwin's Edible Fruit Trees |
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amanda says... Hi Godwin - this forum might not b the place for your answers - if u are a plant pathologist and we can't help u?? I would be getting out my trusty microscope and having a good look at some histopathology for starters. Then I would be talking to colleagues in your area/neighbouring countires - you may have a disease that is not present in australia. | About the Author amanda19 Geraldton. WA 9th August 2009 9:29am #UserID: 2309 Posts: 4607 View All amanda19's Edible Fruit Trees |
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| About the Author Zambia 17th August 2009 7:46pm #UserID: 0 Posts: View All 's Edible Fruit Trees |
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| About the Author amanda19 Geraldton. WA 17th August 2009 9:25pm #UserID: 2309 Posts: 4607 View All amanda19's Edible Fruit Trees |
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Brendan says... Hi Rick & Godwin, I'd say your soil is too sour. Add dolomite, a good handfull to the sq. metre, scratch it into the soil, cover with lots of mulch and water in. Also, I'd add a bit of boron (borax) and Sulphate of Potash fertilizer as well. Spray the trees and fruit with 30g copperoxy chloride (a good tablespoon full) in 4.5 litres of water with 60ml of a good wetting agent. This will take a while to come good. | About the Author Brendan Mackay, Q 19th August 2009 7:14am #UserID: 1947 Posts: 1722 View All Brendan's Edible Fruit Trees |
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| About the Author Aahil kerala,india 12th October 2009 5:20am #UserID: 2893 Posts: 1 View All Aahil's Edible Fruit Trees |
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| About the Author Wayne Mackay QLD 12th October 2009 8:29am #UserID: 338 Posts: 908 View All Wayne's Edible Fruit Trees |
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| About the Author kerala,india 13th October 2009 5:43am #UserID: 0 Posts: View All 's Edible Fruit Trees |
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| About the Author 27th October 2009 2:56pm #UserID: 0 Posts: View All 's Edible Fruit Trees |
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| About the Author Sonya Townsville QLD 19th November 2009 6:22pm #UserID: 3020 Posts: 1 View All Sonya 's Edible Fruit Trees |
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| About the Author ad1 malaysia 28th February 2011 8:11pm #UserID: 5001 Posts: 1 View All ad1's Edible Fruit Trees |
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Diana says... Does anyone know what the brown stuff on my guavas is? I put fruit fly exclusion bags over as many branches as I could, and it seems worse under them so maybe it is worse in humidity. The worst cases seem to make the fruit go hard like wood. Could it be mites, or a fungal disease? I didn't have this problem last year. Thanks, Diana.
| About the Author Brisbane 17th March 2011 8:13am #UserID: 0 Posts: View All 's Edible Fruit Trees |
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| About the Author paulaf1 SE Queensland 17th March 2011 9:34am #UserID: 2568 Posts: 51 View All paulaf1's Edible Fruit Trees |
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BJ says... Is it wind rub? I get it on my Yellow Cherry Guavas sometimes, that I bag in mosquito mesh bags. It doesnt really effect much other than the skin of the fruit though. I have noticed some hard fruits on the tropical guavas in my yard though. It seems, though, that some sort of boring insect gets into those fruit and slows ripening, it gets full of ants and goes all woody... Does that sound anything like what's going on on your trees Diana and Paula? | About the Author Theposterformerlyknownas Brisbane 17th March 2011 12:44pm #UserID: 3270 Posts: 1552 View All Theposterformerlyknownas's Edible Fruit Trees |
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Diana says... Hi BJ, Thanks for the reply. It is not wind rub on most of them, because it's all over (not just where it might rub), and it's on fruit in the open on the outside of the fruit at the tips of branches as well (just more in the mesh bags). The woody guavas might be a different thing, I don't know. That affected all of my cherry guavas that were in mesh bags- it does look similar to the other brown stuff. It is something about this year that didn't affect last year's crop, which makes me think it is related to high rainfall. Almost no guavas are unblemished, they all have tiny holes, even ones in bags. Perhaps something smaller than a fruit fly is getting in? If no-one knows, perhaps I will try some generic sprays for verious problems one at a time (pyrethrum? copper? sulphur? white oil??). It may be too late though. Next year I'm going to saturate with spinosad. | About the Author Diana Brisbane 17th March 2011 5:55pm #UserID: 3004 Posts: 284 View All Diana's Edible Fruit Trees |
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amanda says... Hi Diana - I am going to go left of field here and suggest a trace element deficiency..? High rainfall can leach soils badly. I am thinking boron. But - is the brown all over the fruit - or mainly on one side? And were these one's in the pics covered with that mesh also? If it were a really tiny sap sucker even - I am sure that u are an experienced enuf' gardener to have spotted it by now :) There would be no harm in spraying with a copper spray, regardless. I spray my guavas while "I am it" ! (ps - do the leaves look like they have a fungal infection? can u post a pic of a mature leaf and a small leaf too?) | About the Author amanda19 Geraldton. Mid West WA 18th March 2011 3:31am #UserID: 2309 Posts: 4607 View All amanda19's Edible Fruit Trees |
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Original Post was last edited: 18th March 2011 3:35am | ||||||||||
Peter says... It might be thrips sucking on the fruit surface. The dead cells turn brown, but the flesh inside is unharmed. This year I have massive problems with it on my red cherry guavas and they also turned all leaves of my nearby Ugni silvery. Garlic spray will kill those thrips. Also a chance that certain mites done the damage, anyway garlic spray will knock them all out. | About the Author Peter36 Perth 18th March 2011 2:44pm #UserID: 5034 Posts: 213 View All Peter36's Edible Fruit Trees |
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Diana says... Thanks, Peter and Amanda. I think the thrips might be a possibility, I will spray some garlic spray when it stops raining. Also the boron deficiency is possible, I have never given them any trace elements. They are a hedge at the edge of the front garden, so they often miss out when I am spreading fertiliser around. I think the little holes in many of them might be secondary. I seem to be getting about half the crop (most of the bagged ones are OK to eat). The brown is all over, but doesn't necessarily change the pulp inside. I am going to take the skins off and make guava paste (a central american favourite recipe apparently). | About the Author Brisbane 20th March 2011 3:56pm #UserID: 0 Posts: View All 's Edible Fruit Trees |
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amanda says... Diana - u could try an experiment and put one of the badly damaged fruits in a jar (with glad wrap punctured with holes over the top) and keep it inside and see if 'anything' hatches out maybe..? Bit like a school project :)) It won't mean much if nothing does - but if something does then it might help. Yum - guava paste! I am going to have a go at making tomatoe jelly (using gelatine) - just for fun! Don't know if it's possible - but I have tasted some wine jellies in the past that were divine! | About the Author amanda19 Geraldton. Mid West WA 21st March 2011 10:34am #UserID: 2309 Posts: 4607 View All amanda19's Edible Fruit Trees |
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| About the Author Tina1 Auckland 8th November 2011 8:15am #UserID: 6091 Posts: 1 View All Tina1's Edible Fruit Trees |
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Hash says... Hi all, I have 2 trees of The guava (not sure if imported or not) anyway the leaves are rusty color and the frist tree i plnted lost all its leaves after 2 months of planting although we did protect it from frosts, still lost its leaves all toghter, which might indicate more then just cold weather.. i have a second tree and it seems that it too the leaves are withering and dying off..and some leaves have some sort of spots on them...rustick spots..anyway know how to deal with it?
| About the Author hash wellington 12th November 2011 1:57pm #UserID: 6116 Posts: 2 View All hash's Edible Fruit Trees |
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| About the Author Seedbuzz Bangalore 16th May 2012 8:47pm #UserID: 6947 Posts: 1 View All Seedbuzz's Edible Fruit Trees |
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sbagga says... Visit article http://seedbuzz.com/knowledge-center/article/season-for-guava for your problem. this article may help you to overcome your guava problem. | About the Author sbagga india 17th May 2012 2:53pm #UserID: 6949 Posts: 1 View All sbagga's Edible Fruit Trees |
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| About the Author Tlcrandall California 18th October 2014 9:04am #UserID: 10673 Posts: 1 View All Tlcrandall's Edible Fruit Trees |
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| About the Author hash hash 25th October 2014 11:20am #UserID: 6116 Posts: 2 View All hash's Edible Fruit Trees |
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| About the Author Harry ROXBURGH PARK,3064,VIC 5th February 2015 5:58pm #UserID: 4975 Posts: 46 View All Harry's Edible Fruit Trees |
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| About the Author For eddy Manly 7th February 2015 10:57am #UserID: 10099 Posts: 14 View All For eddy's Edible Fruit Trees |
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SMG1 says... I'm also having problems with my guava. Having spent a bit of time on google, I'm thinking it's blossom end rot but would be grateful for advice from others who might know better. Pictures attached. It affects every one of my fruit so that, before they get ripe, the fruit is spoiled. No obvious insect entry marks and no insects or maggots evident on or in the fruit. The spoiled bit is very soft... almost translucent. Any advice much appreciated
| About the Author SMG1 LENNOX HEAD,2478,NSW 25th May 2015 9:48am #UserID: 11815 Posts: 3 View All SMG1's Edible Fruit Trees |
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SMG1 says... Bump... Anybody got any ideas. Have added some agricultural lime working on the theory that calcium deficiency might be the problem. Didn't make any difference to last batch of fruit but I may have added the lime too late. I have some new fruits coming on now and keen to finally get something I can eat. | About the Author SMG1 LENNOX HEAD,2478,NSW 28th November 2015 2:03pm #UserID: 11815 Posts: 3 View All SMG1's Edible Fruit Trees |
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Bernhard says... Hi Rick, I planted a Guava tree four years back and get plenty of fruit, however I seem to have exactly the problem which you described a few years ago. Can you please advise what you ended up doing and what ended up helping you to eliminate the problem? Was it a fungus after all? I really look forward to get your feedback - thanks! Regards, Bernhard | About the Author Bernhard Buderim 28th February 2016 12:51pm #UserID: 13391 Posts: 1 View All Bernhard's Edible Fruit Trees |
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johan96 says... Hello, Organic pest control is less expensive than buying and applying pesticides, and it's safer for your garden, your family, the nature and the environment. The easiest way to prevent insect damage in your garden is to discourage them from coming in the first place. A healthy garden is the best defense. Pull out any weak plants. They may already be infected. If not, they will attract predators. Build healthy, organic soil. Natural composting methods,. Seaweed mulch or spray. Seaweed contains trace elements such as iron, zinc, barium, calcium, sulfur and magnesium, which promote healthy development in plants. Minimize insect habitat. Clear garden area of debris and weeds which are breeding places for insects. Use clean mulch. Inter-plant and rotate crops. Insect pests are often plant specific. When plantings are mixed, pests are less likely to spread throughout a crop. Keep foliage dry. Water early so foliage will be dry for most of the day. Wet foliage encourages insect and fungal damage to your plants. visit here for more: http://www.hometermitecontrolsydney.com.au/termite-inspection/ | About the Author johan96 sydney 29th June 2017 6:16pm #UserID: 16428 Posts: 1 View All johan96's Edible Fruit Trees |
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Original Post was last edited: 29th June 2017 6:20pm | ||||||||||
