The best time to harvest yams? Science says when the lower leaves turn yellow
The best time to harvest yams? Science says when the lower leaves turn yellow: A vendor holds a tuber of yam for sale at the popular Mile 12 market in Lagos. Pius Utomi Ekpei/AFP via Getty Images Nigeria accounts for 60% of the world’s [yam output] and 74% of the total production in West Africa. …
