Leafy Vegetables

Climatic and Soil Requirements

Upland Kangkong can be grown from low to mid elevations throughout the year. Production is best in soils with high level of organic matter It requires ample amount of soil moisture for optimum growth. The plant produces optimum yield in lowland humid-tropics under stable high temperature and short day-length

Land Preparation

Prepare land by plowing and harrowing twice. Prepare raised beds 1 m wide. Spread well –decomposed animal manure at the rate of 1-2 kg per sq m between beds. Make shallow lines 10 cm apart across the beds before sowing.

Planting

Note : Soak the kangkong seeds in clean water for 16 hours before planting or sowing

Sowing seeds in the rows on the soil

  1. Construct furrows 1 inch deep and space them 10-15 cm apart
  2. Sow the seed 5 cm apart in the hole
  3. Cover seeds with layer of compost
  4. Watering should be applied immediately after sowing

Irrigating

Kangkong require plenty of water because it has short root system and fast growing. Watering should be done every day.

Fertilizing

  1. Kangkong is quite responsive to nitrogen fertilizer.
  2. Use organic fertilizer 46-0-0 or 20-0-0.
  3. Apply water after fertilizer application.
Nutrient Days after sowing
Compost Preplant
46-0-0 7
20-0-0 14


Harvesting

Harvesting can be done by uprooting the kangkong plant at about 20-25 days after sowing. Kangkong sold with the roots intact commands premium price in the market. Harvest is washed and tied in bundles. Kangkongs have large surface –to-volume ratio and lose water easily. Harvest time should be early morning or late afternoon. After harvesting wash and tie kangkong harvests in bundles and wrapped with plastic. Keep the harvested produce in cool shady area.

Upland Kangkong Tsina LP

  • Mabulas, mabilis, magaan patubuin
  • Mabilis kumita
  • Mahahaba ang tangkay, dark green & broadleaves
  • Mas malinis, malambot at masarap
  • Masustansya, mataas sa vitamin A, iron at beta-carotene

Swamp Kangkong

  • Polluted, dirty, toxic
  • Pinagmumulan ng sakit

Upland Kangkong

  • Kangkong galing sa buto
  • Malinis, masustansya, malambot, puno ng bitamina
  • Hinahanap sa Hotels at restaurants!

Disease and Pests of Kangkong

Few disease affect kangkong, the most common being White rust (Albugo ipomeae pandulatae) Symptom of disease: White spores in the leaf back. Soil born disease

Land Preparation

  1. Prepare the land thoroughly. Make beds that are 1.0 meters wide and 20 to 30 cm high.
  2. Incorporate generous amount of animal manure, mix 1.0 kg per 1.0 meter bed.
  3. The use of plastic mulch is highly recommended to control weeds and conserve soil moisture.
  4. Make holes in beds with distance of 25-30 cm x 25-30 cm. Prepare 2-3 rows per bed.

Seedling Production

  1. Sow seeds in seedling trays using the following soil mixture:
    2 parts coco coir dust 1 part manure
    1 part garden soil
    ½ part sand
  2. Sterilize the soil mix in 200Liter drum filled with 25Liters of water. Steam or keep boiling for 30-45 minutes.
  3. As an alternative to soil mixture, use East West's peat moss as a seedling growing medium. Put the ready to use peat moss at seedling trays.
  4. Sow 1 seed per cell. About 150-200 grams of seed is required per hectare.
  5. Three days after sowing, drench with 16-20-0 at 7.5 grams/ liter of water, and 5 days after sowing drench 14-14-14 at 5 grams/ liter of water.
  6. Maintain under partial shade. Harden by exposure to full sunlight 2-3 days before transplanting.

Transplanting

  1. Water the beds properly before transplanting.
  2. Transplant the seedling 8-10 days after sowing.
  3. Drench fungicide such as Propalant or Previcur after transplanting.

Irrigation

Water the plants regularly. The soil will be sufficiently moist at all times but not to wet.

Fertilization

Time of Application Fertilizer/Material Method of Application Amount
Basal Manure Broadcast 1.0 kg/linear meter
Basal 14-14-14 Drill 15 grams/hill
1 DAT Calcium Nitrate Drench 7.5 grams/liter
3 DAT Calcium Nitrate Drench 7.5 grams/liter
5 DAT Calcium Nitrate Drench 7.5 grams/liter
7 DAT 14-14-14 Sidedress 1.0 grams/hill
15 DAT 46-0-0 Sidedress 15 grams/hill


Harvesting

  1. Harvest lettuce 25-30 DAT.
  2. Sort the harvest immediately and pack. If possible transport at 4 degrees Centigrade.

Land Preparation

  1. Direct sowing method – the seeds are sown direct in the beds at spacing of 10 cm x 20 cm. One hectare will require 2.0 kg seeds.
  2. Transplanting method (produces best quality pakchoi) – The seeds are sown on seed bed or sowing medium at rate of 10 grams of seeds per square meter.
  3. Sowing Medium can either be peat moss or mixture composed of 2 parts garden soil, 2 parts compost, 1 part washed coconut coir or rice hull. 10 to 14 days after emergence, the seedling are transplanted at 10 cm x 20 cm spacing. One hectare will require 1.0 kg using transplanting method.

Transplanting

  1. Water the beds properly before transplanting.
  2. If rice straw of plastic mulch is available, mulch the bed and transplant at 10 cm x 20 cm, there will be 3 to 4 rows per bed.

Irrigation

  1. Water the plants regularly.
  2. Irrigation can either by hand watering or furrow irrigation. It is advisable to have mulch to conserve soil moisture.

Fertilization

  1. Before sowing or transplanting incorporate 2 bags 16-20-0 and 1 bag 46-0-0 in beds.
  2. Side dress with 5-10 grams 46-0-0 per plant at 2-3 weeks after transplanting.

Weeding

Weeds cause considerable yield loss if not controlled in early stage. Control weeds by light cultivation, spot weeding, and mulching.

Pest and Disease Management

Avoid pest and disease damage by following recommended biological, cultural, mechanical control procedures. Spray appropriate crop protection chemicals when needed.