Fall armyworm status and distribution: "In Zambia, preliminary surveillance conducted by Zambia Agriculture Research Institute (ZARI) through its National Plant Protection Organisation, the Plant Quarantine and Phytosanitary Service and the Entomology Team suspected presence of the pest in all parts of the country." ( International Plant Protection Convention Pest Reports 2017)

Estimated yield loss: "Based on the survey results, the estimated national mean loss of maize in Ghana was 45% (range 22-67%), and in Zambia 40% (range 25-50%)." (CABI, 2017)

References:

1.  Preliminary Report on Fall Armyworm in Zambia. International Plant Protection Convention Pest Reports (2017). https://www.ippc.int/en/countries/Zambia/pestreports/2017/02/preliminary-report-on-fall-armyworm-in-zambia/

2. Fall Armyworm: Impacts and Implications for Africa Evidence Note (Summary Version), September 2017. http://www.invasive-species.org/Uploads/InvasiveSpecies/Fall%20Armyworm%20Evidence%20Note%20(Summary%20version)%20September%202017.pdf