The United Nation’s Food and Agriculture Organisation (FAO) says it is concerned that the armyworm outbreak could spread to the whole of southern Africa, threatening crops.
So far, seven of the 15 states which make up the regional body Sadc have been affected by the outbreak.
The FAO says Zimbabwe might be the hardest hit, with up to 130,000 hectares of maize infested.
In Namibia, 50,000 hectares of maize and millet have been damaged.
The pests are called armyworms because they eat most vegetation in their way and can destroy entire fields.
A three day regional meeting to discuss the outbreak has ended in Zimbabwe’s capital Harare.
The delegates resolved to roll out awareness campaigns targeting farmers.
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