Nutrient deficiency / excess in Citrus
sreyan
9 years ago
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sreyan
9 years agogreenman28 NorCal 7b/8a
9 years agoRelated Discussions
Plant Nutrient Deficiencies. This will help you!
Comments (8)Mike, good idea to post symptoms here, but since it is a citrus forum, I should point out that in many cases, the symptoms you've listed don't occur on citrus, and that the actual symptoms on citrus are quite different from those listed. For example: Calcium -- seldom visible symptoms on citrus Magnesium -- never symptoms on new growth of citrus; old growth shows a characteristic "inverted V" of green at the base of the leaf and yellow-orange above. Phosphorus -- I've never seen a citrus tree exhibit the purpling of leaves; rather, reduced fruit size and yield is most common. Boron -- in citrus, shows up as dead, sunken, gray or brown areas in the albedo (white part) of the fruit peel. Usually no other symptoms. Copper -- Growth may be unusually vigorous, producing huge, deep blue-green leaves, but the stems are too weak to support the weight, so they bow unusually, giving what is known as an "S" shape to the limb. Also, such limbs develop blisters on the epidermis which swell, then burst open, and ooze a sticky sap. Then in areas of the world that have fire ants (e.g., Florida), the ants are attracted to the sap, and they chew away the epidermis, killing the twigs entirely. Manganese -- at least in Florida, even a fairly severe deficiency generally has no effect on yield. Molybdenum -- older leaves are green with large (up to 1/4") yellow spots, like large freckles....See MoreLinks to identify nutrients deficiencies & cheapest fertilizer
Comments (56)Re-post the info. from the other thread: The problem with lime? Its high pH kills the soil bacteria that fixes nitrogen, so lime UNDO the effect of nitrogen-fertilizer like alfalfa. I put lime in Pink Peace's planting hole, since the soil was previously occupied by a large bush, plus I wanted to tone-down its gaudy color. The result? Calcium & other nutrients deficiency in young leaves, along with less petals and flowers that don't last long. Calcium could not be released since the pH is too high in the planting hole. Will have to dig Pink Peace AGAIN after its 3rd flush. Grafted Pink Peace gives me hell, compared to much-cleaner-own-root. I dug it up 4th of July since it black spotted on me, fixed the hole with compost & lime, it became pale & less petals after that. It's really hard to achieve balance of nutrients, so I'm better off using slow-released balanced stuff: red-lava-rock & pea gravel, compost, alfalfa hay. My GRAFTED Pink-Peace black spots be it wet or dry. Above pic, it's a calcium deficiency, since the young leaves are, "New leaves (top of plant) are distorted or irregularly shaped. Causes blossom-end rot." see link below: http://extension.arizona.edu/sites/extension.arizona.edu/files/pubs/az1106.pdf I get tons of blossom-end-rot on my cherry-tomato: the one I forgot to put gypsum in the planting hole. Gypsum is questionable on top, but great in the planting hole, since it's evenly distributed, rather than gunking on top to burn roots. Below is a good chart:...See MoreOrange Tree nutrient deficiency?
Comments (13)Just for an update 1 month later... Bought Foliage Pro and put 1 ml (I'm sure on the heavier side of 1 ml) into a 600 ml misting bottle... Misted twice the first week then maybe 2 - 3 more times over the month. Quite happy with the results as all the new growth is vigorous and a deep green.. Thanks again to all that helped...See MoreHelp ID Nutrient Deficiency in Citrus
Comments (8)Yeah those new leaves look like they're not getting enough nitrogen. I would go very light on the nitrogen though since it's only been in the ground for a few months, but especially since we're coming up to cold weather (maybe? it's was still almost 90 in my back yard today). I would give the tree some good protection if we get some nights around 35 degrees or lower. Once spring rolls around, then give it some more fertilizer because the ground is probably lacking....See Moresreyan
9 years agosreyan
9 years agosreyan
9 years agosreyan
9 years agogreenman28 NorCal 7b/8a
9 years agosreyan
9 years agogreenman28 NorCal 7b/8a
9 years agocalistoga_al ca 15 usda 9
9 years agogreenman28 NorCal 7b/8a
9 years agooxboy555
9 years agogreenman28 NorCal 7b/8a
9 years agocalistoga_al ca 15 usda 9
9 years agoOhiofem 6a/5b Southwest Ohio
9 years agolast modified: 9 years agoronalawn82
9 years ago
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Nil13 usda:10a sunset:21 LA,CA (Mount Wash.)