Silva, L.C.; Amarasekara, M.G.T.S.; Ranawaka, N.D.
(Rajarata University of Sri Lanka, 2020-06)
Maize is the second most important cereal crop grown in Sri Lanka. lt
needs high amount of nitrogen and potassium for better growth and
yield. However, Non-Calcic Brown (NCB) soil is poor in exchangeable
potassium. ...