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Apricot and aprium, lost vigor

Posted by ahajmano none (My Page) on
Mon, Mar 25, 13 at 2:33

Not sure whys going on...

I have two apricots in a single hole doing fabulous. Vigorous shoots, big 2" + wide leaves. Goldkist and autumn royal.

Then I have a cot n candy aprium and a tropic gold apricot not doing so well... The leaves stay small, about 1", and the terminal buds on the shoots keep spontaneously dying and falling off. They go brown, shrivel, and pinch themselves off. The leaves also are not "flattening out", but are rather still taco-like. I will take pics tomorrow. And help would be appreciated.


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RE: Apricot and aprium, lost vigor

  • Posted by fruitnut z7b-8a,4500ft SW TX (My Page) on
    Mon, Mar 25, 13 at 10:25

Are you sure those trees are getting enough water? That sounds like the most likely issue but it could be something else.

Another possibility would be too much fertilizer. Have you fertilized and are these newly planted trees?


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RE: Apricot and aprium, lost vigor

Yep, newly planted trees. Both the vigorous and non vigorous trees got a healthy dose or organic fertilizer when they were first planted dormant late last fall. An adjacent nectarine tree is suffering from nitrogen deficiency, so I just re-fertilized everything with a handful each of triple 16. Watering should be sufficient (3 times a week) but I could double down. Everything is planted on a steep south-west facing hill. I also just mulched the hell out of them to see if excess soil temp is the culprit.

Other than the taco puckering, the color is deep green and healthy. I am most concerned with the tip die-off, as it is clearly holding the tree back.


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RE: Apricot and aprium, lost vigor

  • Posted by fruitnut z7b-8a,4500ft SW TX (My Page) on
    Mon, Mar 25, 13 at 13:47

It won't be excess soil temperature at this point in the year. Cool soil and too much water can cause issues such as iron deficiency as well as drowning the roots.

Three waterings a week might be too much especially if the soil drains slowly. One good watering a week should be enough especially with all that mulch and no weeds

What you are identifying as nitrogen deficiency could be caused by too much water. Or if the soil drains really well you are flushing out the nitrogen.


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RE: Apricot and aprium, lost vigor

I identified the soil definitely drains well on this slope. The soil is damp-dry within a day of watering. My soil is sandy shale with a shallow hard pan of shale, but with the slope and south facing slope, the water melts away. I will slow it down to once a week.

Thanks. Stay tuned to pictures tonight.


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RE: Apricot and aprium, lost vigor

Afflicted aprium


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RE: Apricot and aprium, lost vigor

Afflicted apricot


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RE: Apricot and aprium, lost vigor

Normal apricot


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RE: Apricot and aprium, lost vigor

  • Posted by fruitnut z7b-8a,4500ft SW TX (My Page) on
    Mon, Mar 25, 13 at 22:39

I'm suspecting salt burn ie too much fertilizer. But at any rate they look like they'll be OK.


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RE: Apricot and aprium, lost vigor

Can you apply too much gypsum? I already checked the PH, it's 6.5.


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RE: Apricot and aprium, lost vigor

  • Posted by fruitnut z7b-8a,4500ft SW TX (My Page) on
    Mon, Mar 25, 13 at 23:53

No not gypsum. But that 16-16-16 or similar needs to be used sparingly on newly planted trees. Some organic fertilizers can also be high in salts.


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RE: Apricot and aprium, lost vigor

Gotcha,

In that case, i will spread some gypsum to displace the salts, slow down on the watering, and won't feed again this season.

This post was edited by ahajmano on Tue, Mar 26, 13 at 12:27


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RE: Apricot and aprium, lost vigor

  • Posted by fruitnut z7b-8a,4500ft SW TX (My Page) on
    Tue, Mar 26, 13 at 12:41

If your soil drains well, and it probably does, a couple good waterings will leach out the salts. It sounds like you are maybe just trying a little too hard. I'm in the same boat right now trying to start some early outdoors watermelon with three nights in a row at about 25F. I'm so worried about the cold I think I've about killed them with too much heat. Had them well covered the other night and a light bulb underneath. It was 95F under there in the morning after 25F outside.


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