Farmers Speak - Orange Maize (VIDEO) HarvestPlus This video is under embargo. Please login to access this video. Caption Biofortified maize is helping combat the problem of vitamin A deficiency in Zambia where maize is a staple food for a majority. The ill effects of vitamin A deficiency can include stunted growth and blindness. Watch this video on how farmers in Zambia are adopting orange maize. HarvestPlus expects that at least 600,000 households will have adopted the crop by 2020. Credit HarvestPlus Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.