Evaluasi Teknologi Pemupukan pada Ubijalar di Lahan Pasang Surut Kalimantan Selatan

In South of Borneo, sweet potato baking is very good market and has to be shipped from Java for fulfilling the demand of the people. Preparation of sweet potato as additional food is only simple by put in oven, so it is sold fresh from the oven. In 2015 description of area mainly physical and chemical aspects are undertaken to provide adequately data. Analysis of soil sample was done in pH, C organic as well as N, P and K. Based on this analysis then treatment are designed based on practical work. Apex vine cutting of several sweet potato varieties were taken from ILETRI to Borneo in 2016 and 2017. In 2017 two varieties were used as the main plot, and five inputs were determined as subplot. Therefore ten combination treatments were laid down in three replication, in the plot size of 6x5 m. Planting distance of sweet potato was 100x25 cm. During 2017 planting was done at February and harvesting was undertaken on July. Growth and yield components were analyzed by statistical procedure MSTATC. Statistical analysis indicated that there was not significantly affected by interaction between variety and agronomic inputs as well. However, both main and subplot were separately affected growth and yield. ILETRI variety Beta3 gave better yield with agronomic input1 able to obtain 15,39 t/ha. However the increase of agronomic input did not follow the increase of tuber yield