Abstract
ABSTRACT Artemisia annua L. is currently recommended by the World Health Organization for preparation of a first-line antimalarial drug, where chloroquine-resistant Plasmodium falciparum has been detected, but current demand exceeds supply. Little published information is available about nutrient requirements of this medicinal crop. A short-term study was conducted to determine if a late-flowering A. annua breeding line would respond to omission of lime, P, K, or N in an acidic, low-fertility soil of central Appalachia. Decreased responses in total dry matter yield were observed to lime > P > K = N indicating that farmers planning to grow A. annua need to evaluate soil fertility before planting. This A. annua genotype appeared to have a slightly higher N requirement than lettuce, which was used as a standard for the short-term soil-genotype-specific fertility response trial. Lime and P deficiency reduced Artemisia total dry matter yield by over 50%. However, deficiencies of K and N reduced total dry matter yield by less than 27%.
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