EFFECT OF NITROGEN AND POTASSIUM ON GROWTH AND YIELD OF TWO GARLIC GENOTYPE

A field experiment was conducted to evaluate the interaction effect of nitrogen and potassium on growth and yield related characters of two garlic varieties at the of Spices Research Center, Bogra during november 2000 to march 2001. The experiment consists of two garmplasm i.e. Accession G19 and G20 with four levels of nitrogen (0, 100, 200, 300 kg N ha-1) and potassium (0, 100, 200, 300 kg K2O ha-1). The three factorial experiment was laid out in a randomized complete block design with three replications. Results demonstrated that there was significant variation present among the studied treatments. Between the varieties, accession G20 showed the best performance (8.08 t ha-1). The solitary application both of N and K2O also increase the growth and yield of garlic at considerable amount. Among the treatments the highest bulb yield was achieved by using 200 kg ha-1 of N and K2O (9.62 and 8.61 t ha-1 respectively). This study suggested that the treatment combination of accession G20 with 200 kg N ha-1 and 200 kg K2O ha-1 will be more profitable (11.03 t ha-1) than any other studied treatment combinations.