gũmagĩra

v.

1. attack, affect. Attack. To afflict or affect negatively; in agriculture, refers to diseases or pests that attack and damage crops or livestock.

Example: Nĩ mĩrimũ ĩrĩkũ ĩgũmagĩra kahũa kaingĩ? (What are the common coffee diseases?); Nĩ mĩrimũ ĩrikũ ĩgũmagĩra ng'ombe cia iria mũno gũkũ Kenya? (What are the common diseases affecting dairy cows in Kenya?); Nĩ mĩtheba ĩrĩkũ ya ũme ĩgũmagĩra mboga? (What types of aphid affect cabbage?)