Seed invigoration to improve viability, seed vigour and growth of porang seedlings

The porang planting area is increasingly expanding. Providing seeds from seeds is considered better, but has problems with the dormancy period so efforts need to be sought to overcome them. This research aims to determine the increase in viability and vigor of porang seeds soaked in a functional microbial solution and to obtain the best growing medium for the growth and yield of porang plants. The research was carried out in Pontianak City from April to November 2021. This research consisted of two experiments. The first experiment used a non-factorial completely randomized design (immersion in functional microbial solution) with nine treatments. The variables observed included: vigor index, growth simultaneity, germination capacity, growth speed, plumule and radicle length. The second experiment used a split plot randomized block design, where the main plot was soil type and the subplot was soaking in a functional microbial solution (same as the first experiment). The variables observed included: plant height and tuber weight. The research results showed that SE21 isolate was the best in increasing seed viability and vigor. All functional microbes were equally good at producing plant height in the two growing media. Alluvial soil growing media: cow manure: roasted husks enriched with WH31C isolate produces the heaviest weight of porang tubers.