As far as I know potato is a crop resistant to pH lower than 5.0, whereas watermelon can tolerate pH from 5.0 to 5.5.

Thank you. Tuber and root crops (sweet poato, cassava) may and are effectively occasionally cultivated in allic soils but yields are rather aleatory in a very large range.

Hi Luc,

that is a very general question, especially without specification of climatic zone, purpose etc. Forages for grazing or cut and carry might be a good option.

Allic soils are present under tropical ustic and udic moisture regimes, iso- and isohyperthermic temperature regimes and also under temperate climates. In Burundi (isothermic) highlands, they are mainly used as natural pastures which represent roughly 1/3 of the country. Also some tea plantations.

I understand this. But is your question just what one could do in theory, without any specific context (markets, climate, food preferences etc)?

@ Tassilo My question is in theory only at the plant physiology and genetic level.

most of the tropical plantation crops like Rubber,pineapple, cocco, fruit crops are possible under ios thermic temperature and ustic/udic moisture regimes.

@ P. Candran. Ok for the thermic and moisture regimes. But do you have experience or references under so acid and Al-rich soil conditions (original question)?

Dera Dr Luc:

I agree with your opinion on tuber crops. In acidic soils of northeast India, most cereal crops (particularly maize) suffer heavily due to soil acidity; yet tuber crops (ginger & turmeric) are growing quite satisfactorily.