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andrew660 starts with ... Hi All. First forum user here, so excuse me if this question has been answered before. I have attached images of five fruit trees from Daleys I planted about three months ago (the Tahitian Lime has been in longer). Not sure if the images names are visible on this forum, but there is a Dwarf Meyer Lemon, Dwarf Rio Red Grapefruit, Honey Murcott Mandarin, Tahitian Lime and a Black Sapote. The soil is approx 7.5 ph and when planted I mixed blood and bone, dynamic lifter and Searles 5in1 into the existing soil. Some trees seem to have a yellowing in patches between the veins and others, esp the grapefruit and mandarin seem to have a yellowing of the mid leaf vein. Any help or suggestions would be most appreciated. Thanks.
| About the Author andrew660 brookfield 20th August 2013 5:44pm #UserID: 8164 Posts: 4 View All andrew660's Edible Fruit Trees |
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| About the Author andrew660 brookfield 20th August 2013 5:50pm #UserID: 8164 Posts: 4 View All andrew660's Edible Fruit Trees |
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Julie says... Two things come to mind. 1. I don't know where Brookfield is, but if your winters are fairly cold, citrus won't take up nitrogen till the weather is a little warmer. This is known as 'winter yellows'. 2. Possible mineral deficiency. Google http://www.dpi.nsw.gov.au/agriculture/horticulture/citrus to check. Go to orchard management. Pictures will give you a fair idea of what may be wrong. | About the Author Julie Roleystone WA 20th August 2013 7:51pm #UserID: 154 Posts: 1842 View All Julie's Edible Fruit Trees |
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| About the Author andrew660 brookfield 20th August 2013 8:35pm #UserID: 8164 Posts: 4 View All andrew660's Edible Fruit Trees |
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Brain says... I agree with Julie point 2. I think you have some mineral deficiency. If your Ph is 7.5, that's probably a bit on the high side for citrus as well. If you haven't fertilise in the last few months, then I think a small (yes small!) doze of citrus fertiliser could help. It won't fix the existing leaves but will help promote a new healthy flush of new growth in the coming spring. And when this happens, then you know your plant is back to the optimal growth conditions. | About the Author Brain Brisbane 21st August 2013 9:52am #UserID: 6289 Posts: 638 View All Brain's Edible Fruit Trees |
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Mike says... Mmmmmm...yellow vein chlorosis,1 and 5 and the others show mineral deficiencies that could be inetrpreted more than one way.There is some winter cool/girdling going on that restricts nitrogen and something else as well.Toxicity from over application is just as likely as any other cause. | About the Author 22nd August 2013 7:45am #UserID: 5418 Posts: 1438 View All 's Edible Fruit Trees |
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andrew660 says... Thanks all, I will wait until it warms up a touch and see if anything improves on it's own. I did do a foliar spray of Epsom Salts for what I thought might be a magnesium shortage. I did wonder about a lack of potassium too........with the leaf curl. What do you think? Mike, what is 'yellow vein chlorosis'? If toxicity from the initial soil preparation is a possibility, then perhaps I leave everything alone for a while. Cheers. | About the Author andrew660 brookfield 22nd August 2013 6:56pm #UserID: 8164 Posts: 4 View All andrew660's Edible Fruit Trees |
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Mike says... Andrew yellow vein chlorosis is now low nitrogen can manifest in cold weather.P and K deficiencies are not seen in foliage much. Salt toxicity, Mg, Fe and Zn deficiencies of caused by antagonism or wrong pH can look like that.Check and adjust the pH, a little B&B or Dyn. Lifter and micro spray/water wouldn't hurt and depending on soil Epsom salts or dolomite in small amounts.Was lots of P and K or chloride containing fertiliser applied before winter? | About the Author 22nd August 2013 7:40pm #UserID: 5418 Posts: 1438 View All 's Edible Fruit Trees |
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