KOHLRABI F1 - SUPERB 32

PLANTING GUIDE OF F1 KOHLRABI SEEDS - SUPERB 32

                           (GOLDEN COIN SEEDS)

I. Feartures:

- Strong plant.

- Harvesting: 70 - 75 day after sowing.

- Petiole: Shorter and thinner. Leaf blade: deep lobing, smaller and light green color.

- Root: Round Flatted, uniform color.

- Root weight: 400 - 500 gram/root.

II. Density:

III. Cropping season:

- Early season: Sowing from June to July, transplanting from August to September. Age of seedlings 25 days.

- Mainly season: Sowing from September to October, transplanting from October to November. Age of seedlings 30 – 35 days.

- Lately season: Sowing in November, transplanting in December. Age of seedlings 25 – 30 days.

IV. Nursery:

- Choose high land, good drainage, light silt soil or sand soil to sowing seeds. Make porous soil, make bed 0.3 m in height, 0.9 - 1 m in width. Basal by manure from 1.5 to 2 kg/m².

- Sowing seeds on the bed with a sowing rate of 1.5 - 2 g / m2. - After sowing seeds, cover seeds with straw and irrigate enough moisture one times/day.

- When have seedling, remove the straw on the bed and irrigate enough moisture regularly. Do not use urea fertilizer in the nursery. Use super phosphate or diluted water to side dressing. Use pesticides in the list of allowed to use to spray if pests are detected. Remove all infected plants, offtypes, stunted and deformed plants.

- Age of seedling from 25 to 35 days, have 3.5 - 5 true leaves (depending on the crop), big plant, not infected. Before transplanting 4 - 5 days, should to stop watering and apply fertilize to stimulate development of new roots. Before transplanting, watering enough to limit roots breaking.

V. Planting and maintenance:

1. Soil:

- Choose high land, good drainage, light silt soil, rotate with other group, soil pH 5,5 – 6,5. Thoroughly plowed, make bed 0,3 m in height, 0,8 – 0,9 m in width.

- Mixed fertilizer with soil, leveling beds. Watering once a day; after transplanting 7 – 10 days, watering 2 – 3 times a day.

2. Fertilizers (for 1000m²):

Fertilizer application for cultivation depends on geographic conditions, however, we recommend applying the following guides are applied very effectively to many growing areas for you refer and apply:

* Quantity:

* Application:

3. Maintain:

• Irrigation: Don’t use waste water, pond water has not been treated to irrigate. After planting, it is necessary to irrigate immediately, twice daily in early morning and late afternoon until green restore, then 3 - 5 days per once depending on soil moisture.
• The side dressing: should the side dressing last time to roots are uniform and thin skin before harvesting one week.
• Cultivate: should do two times, the first times: 15-20 days after sowing, the second times: 30 - 35 days after sowing .

VI. Plant protection:

1. Insect pests:

* Kohlrabi moth (Plutella xylostella):

• The most dangerous for cabbage, damage from October to March next year. They can acquaint quickly with chemicals, so must use rotating chemicals.
• Before transplanting in the field 1 – 2 days, should be spray the following chemicals Sherpa 25EC or Regent 800WG at level 0,1%.
• In the growing stage of plants can use the following chemicals: Biological drugs (BT, Delfin WP (32 PU), Dipel 3,2WP, Aztron700 DBMu, Xentary 35WDG ...); Chemotherapy (Sherpa 25EC, Atabron 5EC, Regent 800WG, Pegasus 500SC ...) and herbal chemicals (HCND95 BTN, Rotenone, Neembon A-EC, Nimbecidin 0.03EC ...). The concentration and duration of isolation of each chemical must comply with the instructions inscribed on the package.
• Rotate with rice or other groups of vegetables (Leguminosae, Solanaceae). In the same field, tomato can be intercropped with Cruciferae to limit damage of Kohrlabi moth.

* Aphids (Brevicolyne brassicae)

- Aphids feeding distorts and stunts plants make kohlrabi don’t growth, aphids are vector plants viruses.

• Disease development conditions: the weather is hot and dry.

- Control:

• Should keep moistures in dry season conditions.
• Preventing and treating by rotating spray with the following chemicals: Abamectin (Reasgant 5EC, Plutel 5EC); Abamectin+Imidacloprid (Abamix 1.45WP); Matrine (Agri-one 1SL); Azadirachtin: (Super Fitoc 3EC, Vineem 1500EC); Thiamethoxam (Actara 25WP);

2. Disease:

* Bacterial blight (Xanthomonas campestris)

• Before sowing, treatment seeds by warm water 50^o C in 30 minute to destroy bacteria on surface of seeds.
• At least rotation crops each 3 year.
• Fertilizing balanced, not applying too much nitrogen.
• Always clean field thoroughly after harvesting.
• When the disease appearing on the leaves, use flowing chemicals Copper hydrocide to prevent disease spread.

* Bacterial Soft Rot (Erwinia carotovora sp.),

• Well drained, always clean the field, destroy weeds, remove all of old leaf, infected leaf
• Use the follow chemicals to prevent plant when appear the disease: Kasugamycine + Copper Oxychlorid or Oxolinic Axid to spray every 7 days per each and stop spraying when the disease is not harmful anymore...

* Cercospora leaf spot:

• Use the follow chemicals to prevent plant when the disease appears: Mancozeb (min 85%), Copper Oxychloride 50% + Metalaxyl 8%, Fosetyl-aluminium (min 95%),…
• When using the concentration, dosage and duration isolation time must follow the instructions on the packaging label of each drug./

We wish you the best harvest with Golden Coin Seeds!