COLOCASSIA (ARVI)

It is a perennial herbaceous plant which is grown in tropical and subtropical regions. It is commercially grown for its sweet and starchy tubers. It is commonly known as Arvi, also as Taro and “eddo”, “dasheen” and “kalo”. The plant mainly attains the height of 1-2m. They have light green color leaves which are elongated and heart shaped. Colocasiahave many health benefits as it is used to cure cancer, blood pressure, heart health, diabetes, digestive health, skin also it is used to boost vision. Punjab, Manipur, Himachal Pradesh, Assam, Gujarat, Maharashtra, Kerala, Andhra Pradesh, Uttrakhand, Orissa, west Bengal, Bihar, Karnataka and Telangana are the major colocasia cultivating states of India.

Arum is planted in variety of soil ranging from sandy to loamy soil. But the best results it gives when grown in sandy loam or loamy soils having high organic matter. Avoid cultivation in soil having poor drainage system. Soil which lacks in fertility and moisture results in low quality corm yield.

Konkan Haritparni

Local Variety

Other Varieties

Punjab Arvi-1: The variety was developed in 2009. This is a tall plant having green leaves which are obliquely erect and are large in size. It has medium thick and long corms. The corm is brown in color which contains creamy inner flesh. The variety gets mature within 175 days of planting. It gives an average yield of 90qtl/acre.

Makhan Arvi: It has round tubers and per tuber has an average weight of 25gm. The vegetable of these tubers are delicious and are made quickly. Plants are of medium height and light green color leaves. The variety matures in 75-85 days. 

Bada Banda, Desi Banda: It has round and hard tubers and the average weight of per tuber is 130gm. The variety is sown in June-July month. The variety matures in 120-125 days. 

Gauraiya, Bansi, Faizabadi, Desi, BaruaSagri: The variety has 3.5-4cm long tubers and the average weight of per tuber is 35gm. The variety is suitable for sowing in February-March month. The variety matures in 95-100 days.

Satamukhi: Horticulture Research Station released this variety. Ready to harvest in six to seven months. Tubers are with excellent cooking quality. Gives average yield of 8.8ton/acre. 

PanchaMukhi: Leaves are also used for cooking. It is high yielding variety. Gives average yield of 9ton/acre. 

Sripallavi: Leaves are also used for cooking. It is high yielding variety. Gives average yield of 9ton/acre. 

NDC 2: Round, oblong tubers. Gives average yield of 7.2ton/acre. 

KCS  2: Long duration variety with high yield. Gives average yield of 14ton/acre. 

KCS 3: Short duration variety with good yield. Gives average yield of 10ton/acre.             

For arum plantation, the land should be well prepared. To bring the soil to the fine tilth, before sowing land must be ploughed 2-3 times followed by planking’s. The field should be kept weed-free.

Time of sowing

For optimum yield, best time for cultivation is in month of June or in month of September – October.

Spacing

For sowing use, spacing of 90x30cm. 

Sowing Depth

Use depth of 5cm for tuber planting.

Method of sowing

The corms are sown manually, deep in the soil. Dibbling method is used for sowing corms.

Seed Rate

Use 850 kg of tubers for sowing in per acre land.

Seed Treatment

For seed treatment dip the tubers in 2% solution of Bavistin for 30 minutes. It protects the tubers from the soil borne diseases.

Fertilizer Requirement (kg/acre)

Nutrient Requirement (kg/acre)

Apply well rotten FYM (Farm Yard Manure) or well decomposed dung@100qtl/acre before sowing. Along with FYM apply fertilizer dose in terms of Urea @75kg, SSP@100kg and MOP@55kg/acre. 

Full dose of Farm yard manure and phosphorus is applied at the time of planting. Nitrogen and Potashdose is applied in three equal splits i.e. thirty, sixty and nighty days after sowing.

Pre-requisite irrigation is necessary for good yield of crop. In summers, irrigation is given at the interval of 3-4 days and in rainy season, no irrigation required but sometimes lifesaving irrigation is necessary. Arvi requires constant irrigation for regular sprouting therefore immediate irrigation is required after sowing. Keep the field wet till germination. 

To make the field weed free, one – two hoeing and earthing up should be done. Butachlor or Pendimethalin@2Ltr or fluchloralin@1lit per acre mixed in 200 liters of water may be sprayed immediately after sowing to control the weeds during the initial months.

Take first earthing up second month after sowing. As per need take second earthing up. 

• Diseases and their control:

Leaf blight: The disease mainly occurs during rainy season when night temperature is between 20-22°C and day temperature is between 25-28°C. The symptoms are water soaked circular lesions are seen which become yellow or dark purple color when dried.

Treatment: Use of Dithane M-45 @400-500 gm/acre in 100-150 ltr water should be applied at the interval of 7-14 days to get cure form leaf blight.

Alomae/Bobone Virus: It is a viral disease caused by bacilli form virus. The symptoms are crinkled and conspicuous feathery mosaic on young leaves.

Treatment: Rouging is one of the methods to prevent from this virus or resistant varieties should be grown to get rid from Alomae/Bobone Virus.

Dasheen Mosaic Virus (DMV): It is a viral disease which is carried out by aphids. The symptoms are seen more in cooler months and the symptoms are veinal mosaic and dispersed pattern seen on the foliar leaves.

Treatment: Different varieties of arvi crops should be grown to avoid Dasheen Mosaic Virus.

Pythium rot or corm rot: The symptoms are stunted growth, shortened leaf stalks, curled and crinkled leaf blades and yellowish and spotted leaves.

Treatment: Use of Captan 50WP @44-45 kg/acre is used to treat corm rot.

• Pests and their control:

Insect-Pest attack: The pests attack the seed corms which will result in poor seed production.

Treatment: Use of Malathion 50EC @250 ml/acre will help to control insect pests.

Harvesting is mainly done after 175-200 days of sowing i.e. when leaves become yellow in color. To obtain soft corms, early harvesting should be done. Proper moisture in the fields is necessary for easy harvesting of corms. Harvesting of corms is done with the help of spade or other hand tools. After harvesting, corms are cleaned and then grading should be done.

Secondary corms are stored in cool and dry place for seed production purpose. By storing in cool and dry places it will help to protect corms from rotting. It can also be stored in cold storages or in pits.