View the original article by ACES Research here.
URBANA, Ill. – The right mineral fertilizers applied appropriately can alleviate nutrient deficiencies in soils and increase crop yields, but most small-scale farmers in Sub-Saharan Africa do not have their soils tested to reveal these deficiencies.
A Tanzania field study shows targeted fertilizer recommendations from low-cost, on-site soil tests paired with subsidies to purchase the recommended fertilizer can increase maize yields on small-scale farms. The soil tests also showed that a change in basic fertilizer recommendations from the government of Tanzania could address an important soil deficiency in Morogoro, where the study took place.
“The result stands out among similar studies because of the magnitude of the yield change – nearly 30% - and its statistical significance,” says Hope Michelson, associate professor of agricultural and consumer economics at the University of Illinois and a principal investigator on the research.