Yellowish on Pitaya trunk

Discussion in 'Fruit and Vegetable Gardening' started by stewardtan, Jul 1, 2009.

  1. stewardtan

    stewardtan Member

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    Malaysia
    Hi,
    recently I saw some trunks those facing direct to sun becoming yellowish. the structure still solids (not like infected by bacteria). If the trunk cross below the other trunk, I can see those under the shadow is still green. Is it because of the sun or lack of something or is it a disease?

    Please help as I'm really new in plantation.
    thank you.

    BR,
    Steward
     

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