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Papaya

Papaya

 

Introduction
Generally papaya yields throughout the year. However, month following warm temperature or moisture stress causes skip in production. Papaya is cultivated in Sri Lanka primarily as a home garden crop. However, there is limited extent under commercial scale and this extent is steadily increasing but there is no significant increase in production. The reasons for these reductions may be due to some districts which are infected with virus under wet zone. Kurunegala district is the highest producer in the country. Kaluthara, Rathnapura, Gampaha, Galle, Anuradapura, Puttalam, Hambanthota and Badulla districts also have higher extents (Table 1).

At present the extent of papaya cultivation is 3123 ha, and this extent is more than the forecasted extent in the year 2005 (Projected extent 2568 ha in year 2005, Fruit Task Force Report 1995). Table 3 & 4 shows exports and imports and that indicates that papaya has a good demand for local as well as export. Rs. 0.25million worth of papaya (2184mt) has been exported to Germany, Bangladesh, Bahrain and Maldives in 1999 (Table 2). The amount imported from Thailand and Singapore to the country is more than amount exported and this shows that local demand is high, mostly this may be again for hotel industry (Table 3). The fruit is used as fresh fruit as well as for other processed products such as RTS and pickles etc. Papaya has high content of carotene (Table 4) and other vitamins.

There is no marked price fluctuation in wholesale and retail prices except during April to June. A considerable quantity of production is lost in the postharvest phase. The highest percentage of postharvest loss is found in papaya (46%) compared to banana and pineapple.

Nutritive value (Per 100 edible portion)

Nutrient

Composition

Water

90.8 g

Energy

32.8 k cal

Protein

0.6 g

Fat

0.1 g

Carbohydrates

7.2 g

Calcium

17.0 mg

Phosphorus

13.0 mg

Iron

0.5 mg

Carotene

666.0 g

Thiamine

40.0 g

Riboflavin

250.0 g

Vitamin C

57.0 g

Source: Medical Research Institute- World Health Foundation of Ceylon (1997) MRI

Medicinal Values / Uses
Ripe fruit: Facilitates digestion, relives constipation. Useful in treatment for splenetic, hemorrhoids, skin diseases, gastro intestinal disorders, hepatic disorders and diseases of upper respiratory tract (throat)
Unripe fruit : Proteolysis activity, good source of papa in, used as meat tenderizer.

Major Growing Areas
Dry and Intermediate Zones

 

Recommended Varieties


Rathna


Rathna for dry and intermediate zones

 

Field Establishment
Spacing- 2.5 m x 2.5 m

 

Crop Management
Fertilizer application

 

Wet zone

Dry /Intermediate zone

Urea

55

60

Rock phosphate

125

-

Triple Super Phosphate

-

40

Muriate of Phosphate

95

125


Pests and Diseases

Disease - Papaya Ring Spot Virus

 

Harvesting & post-harvest technology
Value Added Products
Fruit bars, dehydrated fruit for confectionery.

 

Research Programme

Program : Crop Improvment

Activity

Responsibility

Indicators

Station

Officer

Time frame

Collection, introduction and evalution of germplasm

HORDI Horana

I. Madagoda

Varieties

3 Yrs (2002 - 2004)

Hybridization and selection

HORDI

I. Madagoda  

Varities

3 Yrs (2002-2004)

Evalution of Indian varieties

Makadura

M.F.S.W.Fernando& S. Herath

Select promising varieties

3 Yrs (2002-2005)


Program : Crop managment & Orchid development

Activity

Responsibility

Indicators

Time frame

Station

Officer

Irrigation practices

HORDI

I. Medagoda

M.A. Roonage

Water requirement Irrigation system Fertigation 

1 Yr (2002-2003)

 

Aralaganwila

I.K. Warshamana
S.H.S.A. De Silva

Irregation/ fertigation

3 Yrs (2002-2005)

Plant density studies

A'pelessa

H.D. Sumanarathne

Irrigation
Identify appropriate techniques for dwarfing

5 Yrs (2002-2007)

Testing different dwarfing techniques

Makadura

Y.G. Senevirathne

Tree height

3 Yrs (2001-2003)


Program : Soil Fertility and Nutrient Managment

Activity

Responsibility

Indicators

Time frame

Station

Officer

Fertilizer management studies for papaya

HORDI 

J.M.P.B. Jayasundara

Fertilizer recommendation

2 Yrs (2002 - 2004)

 

Makandura
MI

     
 

Horana

J.D. Weerasuriya

 

2 Yrs (2002 - 2004)


Programm : Crop Protection : Activities have not been identified
Program : Post Harvest Handling

Activity

Responsibility

Indicators

Time frame

Station    

Officer

 

Studies on pre and post harvest techniques for quality improvement

FRU

K.H. Sarananda

work has been completed
A document will be prepared

01 Yr (2002 - 2003)


Program : Planting matirial Production

Activity

Responsibility

Indicators

Time frame

Station

Officer

Breeders seed production program

Aralaganwila A'pelessa

S.S. Weerasinghe

-

 
 

MI

S.G. Piyadasa

Breeder's seed

Continuous

 

  • Variety Rathna was completely affected by ring spot virus. Therefore breeder seed production program was terminated.