Interactive effect of nitrogen and potassium on dry matter and nutrient partitioning in true potato seed mother plants

Abstract

Field experiments were conducted at Namulonge Agricultural and Animal Production Research Institute and Kalengyere Research Station in Uganda, during 1995-1996 and 1999, to assess the effect of N and K on dry matter yield and nutrient partioning in true potato (Solanum tuberosum) seed (TPS) mother plants. Three N (0, 120, 240 kg ha-1) and K (0, 132.8 and 265.6 kg ha-1) rates were applied to mother plants of three potato genotypes, CIP 800212, CIP 381379.9 (Kisoro) and CIP 381403.1. Potassium application significantly (P