Name of crop Kangkong
Category : Vegetable crops
Name of variety : BARI Gimakalmi
Identifying character : Leafy vegetable (Ipomoea reptans) suitable for summer season, Both leaves and petioles are edible.
Developed by (Centre/Division) : Olericulture Division, HRC, Gazipur
Year of release : 1983
Crop duration : 210-240 days
Yield (kg/ha) : 40-45
Suitable area : All over Bangladesh
Sowing time : March- May is the optimum time, but can be grown round the year
Harvesting time : Any time of the year depending upon time of sowing
Major diseases and Management : a) Leaf spot
Management:
1. Use of disease free seed.
2. Spraying Bavistin/Knowin at 2 g/liter of water at an interval of 10 days.
b) Stem rot
Management:
1. Use of disease free seed.
2. Spraying with Bavistin/Knowin at 2 g/liter of water at an interval of 10 days.
Major insect/pest and Management : a) Aphid
Management:
1. To check the aphid damage, cut and destroy promptly all the infested leaves along with colonies of aphids the early stage of attack.
2. Conservation of natural enemies especially different ladybird beetles.
3. 2-3 spraying with Marshal/20EC @ 1.0 ml/L or water or Limithion at the rate of 2.0 ml/liter of water at an interval of 15 days.
b) Grasshopper
Management:
1. As it is a minor pest, no control measures are adopted against this grasshopper on leafy vegetables.
2. Dusting done against aphids can control this pest as well.
c) Leaf eating caterpillar
Management:
1. Hand-picking of caterpillar in the initial stage of attack will prevent the population build up of the pest.
2. If necessary spray with 0.1% carayl but harvest the crop after ten days of treatment.
3. In case of severe attack spray Limithion or Fifanon or @ 2 ml/L of water.
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