Nutrient Uptake and Dry Matter Production by Intensively Managed Yams Grown In an Ultisol

Abstract

Intensively managed yams grown in a Ultisol and fertilized with 2,240 kg of 10-5-20-3/ha yielded 51.6 T of marketable tubers/ha, containing 18 T of edible dry matter, over an 8-month crop cycle. Uptake of nutrients by the yams was 190, 25, 215, 90 and 35 kg/ha of N, P, K, Ca, and Mg, respectively.