Arum-Seed মুকি

Colocasia esculenta is a tropical plant grown primarily for its edible corms, a root vegetable most commonly known as taro (/ˈtɑːroʊ, ˈtæroʊ/), or kalo in Hawaiian (see Names and etymology for an extensive list). It is the most widely cultivated species of several plants in the family Araceae which are used as vegetables for their corms, leaves, and petioles. Taro corms are a food staple in African, Oceanic and South Asian cultures (similar to yams), and taro is believed to have been one of the earliest cultivated plants.At around 3.3 million metric tons per year, Nigeria is the largest producer of taro in the world. Taro can be grown in paddy fields where water is abundant or in upland situations where water is supplied by rainfall or supplemental irrigation. Taro is one of the few crops (along with rice and lotus) that can be grown under flooded conditions. This is due to air spaces in the petiole, which permit underwater gaseous exchange with the atmosphere. For a maximum dissolved oxygen supply, the water should be cool and flowing. Warm, stagnant water causes basal rotting. For maximum yields, the water level should be controlled so that the base of the plant is always under water.

Flooded cultivation has some advantages over dry-land cultivation: higher yields (about double), out-of-season production (which may result in higher prices), and weed control (which flooding facilitates). On the other hand, in flooded production systems taro requires a longer maturation period, investment in infrastructure, and higher operational costs, and monoculture is likely.

Like most root crops, taro and eddoes do well in deep, moist or even swampy soils where the annual rainfall exceeds 2,500 mm (100 in). Eddoes are more resistant to drought and cold. The crop attains maturity within six to twelve months after planting in dry-land cultivation and after twelve to fifteen months in wetland cultivation. The crop is harvested when the plant height decreases and the leaves turn yellow. These signals are usually less distinct in flooded taro cultivation.

Harvesting is usually done by hand tools, even in mechanized production systems. First, the soil around the corm is loosened, and then, the corm is pulled up by grabbing the base of the petioles. The global average yield is 6.2 tonnes per hectare (2.8 short tons per acre) but varies according to the region. In Asia, average yields reach 12.6 t/ha (5.6 short ton/acre).[