Tomato blight is classified into two types: early tomato blight and late tomato blight. All of this is manageable through natural means.
Sweet potatoes weevils resemble an ant, has an antenna which is usually differentiated by the gender of the weevil, the females have club-shaped antennae while the males are straight.
It is therefore important for countries to relook into factor that have led to low productivity for instance land degradation and population pressure on land. These calls for more sustainable farming systems.