Despite poor soil fertility and water scarcity, thousands of farmers in Kenya have increased their crop yields by 17-20% and saved 20% of their fertilDespite poor soil fertility and water scarcity, thousands of farmers in Kenya have increased their crop yields by 17-20% and saved 20% of their fertilDespite poor soil fertility and water scarcity, thousands of farmers in Kenya have increased their crop yields by 17-20% and saved 20% of their fertil