Telephone

+94 812 388331 / 32/ 34

Email Address

info@doa.gov.lk

Office Address

Department of Agriculture, P.O.Box. 01,
Peradeniya

HORDI Crop – Innala

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Innala

Coleus rotundifollius /Solenastemon rotundifolius

Released Varieties

  • Binari
Variety details >>

Climatic requirements/ Areas suitable for cultivation

Year around rainfall distribution is better. High day and night temperature gap is important for tuber formation

Most suitable growing areas – wet zone specially Galle, Kalutara, Colombo, Gampaha, Matale, Matara, Rathnapura districts

In addition Kurunegala from intermediate zone and Hambantota from dry zone (Minor)

Soil

Well drained light Sandy loam soil

Cutting requirement

Nursery size is depend on 12% – 15% from the cultivation extent

Land preparation

 light soil is suitable for better tuber formation

Nursery Management

Sprouted healthy tubers were used as planting materials

To induce sprouting seed tubers were spreaded on the cement floor

Sprouted tubers were placed on nursery beds with50cmx 50cm spacing

Fertilizer recommendation for nursery ( before planting tubers 4m2 of beds)

 

Urea

15g

TSP

25g

MOP

40g

Cowdung

10-12kg

 

To increase shoot growth, liquid fertilizer or cattle urine can be applied as follows,

 At 3-6 weeks  (Some traditional farmers practice)

             Cattle urine 1: water 1

                             OR

             Liquid fertilizers (Albert solution, Green care, Crop master) 2-

At 2-3 weeks, (common used)

             Urea – 10g             For 1m2

             MOP – 10g

Planting

Crop pattern is depend upon the season and climatic zone

         Wet Zone – June -july with the onset of rain

          Dry Zone – September – October with the onset of high rain

          Third season cultivation – August soon after paddy harvesting

Spacing

At the nursery – 50cm*50 cm  sprouted one tuber per hill

Yala season –  cuttings (30cm*30 cm)

Maha season –  cuttings (15cm*15 cm)

Fertilizer

Both organic and inorganic fertilizer can be applied to obtain high quality and economic yield

Cow dung  is recommended as organic manure for high yield

 

Application time

Urea (Kg/ha)

TSP (Kg/ha)

MOP (Kg/ha)

Before planting

–

150

–

2 WAP

65

–

60

6-8 WAP

65

–

90

10-12 WAP

–

–

60

*Fertilizer should be applied before flowering.

*If soil PH is less than 5, 1-2 kg/ha of dolomite can be applied to the soil two weeks before planting to adjust the optimum level.

*Final MOP dose is very important to obtain large and quality tubers.

Water supply

Depend on rainfall and area

Weed Control

Only for nursery and first month

Pest Management

Not reported earlier, during last 2-3 years Cutworm –attack (Spodoptera litura ) was reported

Nematode damage can be identified with  repeat cultivation of the same crop during prolonged period,

Control

  • Crop rotation
  • Application of poultry manure to the soil
  • Use healthy seed tubers

Disease Management

There are no significant diseases damage identified for the cultivation of innala. But can cause roundworm (nematodes) damage when planting innala in the same field for a long time.

Root nodules caused by roundworms can lead to stunted growth and death of the plant.

To avoid this

  • Use of healthy seed tubers
  • Organic chicken manure can be used.

Harvesting

From January  to February,  when vegetative part of the plant is turned yellowing

Use hand fork to expose tubers carefully  from the soil to prevent tuber damages

Yield

Average yield 10-12 tons/ha

Potential yield 18-20 tons/ha (Low lands)

Training