Yield Performance of Sweet Potato (BNAS 51) in Response to Different Amounts of NPK (14-14-14) Application

Abstract

The study was conducted in Damuman West, Sta. Maria, Ilocos Sur to determine the yield performance of sweet potato in response to different amounts of NPK (14-14-14) application and to compare the yield in kilograms per plot. Sweet potato (BNAS 51) was used as the main crop. Thus the treatments were: Ti- 4.4 kg of NPK/plot, T- 8.8 kg of NPK/plot, T- 13.2 kg of NPK/plot and T-- 17.6 kg of NPK/plot. These including a control (T, - no fertilizer application) were laid out following a Randomized Complete Block Design (RCBD) with three (3) replications. Results of the study showed significant difference of the different amounts of NPK application. T (13.2 kg ofNPK/plot) in Replication II
gave the highest computed yield of18.3 kg/plot and was followed by T again in Replication III with 17.7 kg/plot and T (17.6kgofNPK/plot) in Replication II with computed yield of 17.3 kg/plot, respectively. Despite the increases in root yield as a result of fertilizer application, addition of higher amounts offertilizer was not profitable considering the present cost offertilizer used.