ESTATE CROPS INFO – Once ignored and considered as snake food, the popularity of porang ( Amorphophallus muelleri ) has been increasing in recent years. The story of a farmer in East Java who became a billionaire thanks to porang who became the trigger. This root crop is indeed in demand by the export market, especially from Japan, China, Vietnam and Australia.
Since then, porang is increasingly in demand for cultivation. The method of propagation itself varies, both generative and vegetative through stem tubers, extractions, leaf cuttings, tuber cuttings, and bulbil. However, tubers and bulbils are considered the most effective methods of propagation.
One plant can produce 1-20 bulbils of various shapes and sizes depending on its location on the branching of the leaf bones. Bulbil can be harvested when the plants enter the aging phase and nearing dormancy.
Bulbil for seeds comes from old plants with yellowing leaves, wilted leaves and petioles, and easily removed seeds. On plants that are still fresh, bulbil sticks stronger and is not good for being used as seeds.
Bulb size that can be used as various seeds. But if you want to plant it directly in the field, choose a bulbil with a diameter of> 2.5 cm. Meanwhile, small bulbils should first be sown in wooden boxes / tubs / polybags.
As for the method of seeding porang with bulbil are as follows:
- Prepare a mixture of sand and soil / compost as a nursery medium.
- Bulbil is sown with the eyes facing upwards so that it will sprout quickly.
- The seeds are ready to be transplanted into the land.
Porang can be planted at the initial spacing according to the optimum distance (35 – 70 cm) or widened 2-3 times during its development. If the spacing is not changed from start to harvest, fallen bulbils are removed and not planted during the planting period.
Meanwhile, changes to the spacing were carried out by planting the largest bulbils that fell during the first cycle of dormancy next to the porang plants that were planted for the first time at the optimum distance.
The function of changing the initial spacing of porang plants is to ensure that three years later, porang can be harvested once a year. In addition, the number of bulbil seeds used for the first time is not large and does not require a large amount of money.
Porang plants have several growth cycles where one cycle lasts for 12-13 months. The first and second cycles are vegetative growth phases, so harvesting can generally be done in the third cycle. (Anjas)
Source: Info Tekbun 12 (7) 2020