Growing Carolina Reaper in Vietnam

[FishwT]

The last couple trips to Vietnam, I brought over some Carolina reaper seeds for my family and friends grow. Nobody was able to successful grow any reaper the first time I gave them seeds. I went to back last March and gave it to someone who was able to grow those into mature healthy looking plants but the fruits have been turning yellow and dropping. I think the soil is missing the necessary nutrients for the fruits. I have asked them to add fertilizers but i am unsure of what is available in Vietnam. I think they use mostly organic fertilizers like chicken manure.
 
any idea or help would be appreciated.
 
Thanks

 

[solid7]

There's absolutely no reason that they should not be able to grow them.  Chicken manure is a nearly complete solution.  Combined with whatever is in the ground, it is good to go. 
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It doesn't sound like they're actually feeding the plants, but if they are, are you sure that the ground isn't contaminated? 
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Pictures?