How many kilograms of nuts does a 5-year-old walnut tree produce?
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½-1 kg per year
3-5 kg by the age of 5
20-50 kg by the age of 10
100 kg at the age of 20
½-1 kg per year
3-5 kg by the age of 5
20-50 kg by the age of 10
100 kg at the age of 20