Horticulture
Horticulture :: Vegetables::French beans

French bean (Phaseolus vulgaris  L)
Fabaceae

Bush type
Varieties
Hills
YCD 1, Ooty 1, Ooty (FB) 2, Arka Komal (Sel.9), Premier, Arka Bold, Arka Sampoorna and Arka Karthik are popular varieties.

Ooty 1

Ooty (FB) 2

Plains
Arka Komal,  Premier, (Sel.9), Arka Suvidha, Arka Anoop, Arka Samrudhi, Arka Suman are under cultivation.

Soil
A well drained loamy soil with pH range of 5.5-6.0 with cool climate is suited for French bean cultivation.

Season
Hills
February –March
Plains
October- November

Seed rate
About 80 kg/ha for hills and 50 kg/ha for plains are required

Seed treatment
Treat the seeds with Trichoderma 4 g/kg or Thiram or Carbandazim @ 2 g/kg of seed 24 hours before sowing to control fungal diseases. If the crop is raised for the first time it should be treated with Rhizobium as in cluster beans. 

Preparation of field
Hills
Dig the soil thoroughly and incorporate FYM and form beds of convenient size.
Plains
After two ploughing, form ridges and furrows.

Sowing
In hills, sow the seeds (2 seeds/hill) in lines or in beds at a spacing of 30 x 15 cm.  In plains, sow the seeds (2 seeds/hill) in the sides of the ridges at a spacing of 45 x 30 cm.

Irrigation
Irrigation is done immediately after sowing and again on third day and thereafter once in a week.

Application of fertilizers
Apply FYM 25 t/ha during last ploughing. 90 kg of N and P 125 kg of P/ha should be applied on one side of the ridges.
For rainfed conditions of Shevaroy hills, apply as a basal dose of 62.5 kg/ha of Phosphorous as super phosphate and with another half of 62.5 kg/ha Phosphorous as FYM enriched super phosphate.

After cultivation
Weeding should be given 20 – 25 days and 40 – 45 days after sowing.  The crop should be earthed up after each weeding.

Plant protection
Pests
Aphids and thrips
Spray Methyl demeton 25 EC or Dimethoate 30 EC each at 1 ml/lit. In hills, glass house white fly occurs during May – August. Place 20 yellow sticky traps coated with castor oil in polythene sheet to attract the white flies.

Pod borer
Pod borer can be controlled by spraying Carbaryl 50 WP thrice at fortnightly intervals at the rate of 2 g/lit.  Dust with Carbaryl 10 D at the rate of 2.5 kg/ha

Ash weevil
Spray phosalone 35 EC @ 1.5 ml/lit.

Whitefly
Place 20 yellow sticky traps coated with castor oil in polythene sheet to attract the white flies.

Diseases
Powdery mildew
Powdery mildew can be controlled by spraying Wettable sulphur at 2 g/lit or dust Sulphur at 25 kg/ha.

Rust
Rust can be controlled by dusting Sulphur at 25 kg/ha.

Anthracnose
Anthracnose can be controlled by spraying Mancozeb at 2 g/lit or Carbendazim 1 g/lit or Chlorothalonil 2 g/lit.

Leaf spot
Leaf spot can be controlled by spraying Mancozeb 2 g/lit.

Root rot
Root rot can be controlled by drenching with Carbendazim 1 g/lit in the root zone.

Yield
8 - 10 t/ha of green pods in 90 - 100 days.

Pole type
Varieties
TKD 1, KKL-I, Ooty 1, Murungai bean are popularly cultivated.

Soil
Cool climate with well drained loamy soils with pH range of 5.5-6.0 is suited for pole bean cultivation

Season
February – March, July - August

Seed rate
About 50 - 55 kg/ha is required. 

Seed treatment
Treat the seeds with Rhizobium (4 packets/ha).

Land preparation and sowing
Prepare the land to fine tilth. Sow the seeds at a spacing of 20 cm between plants in double rows of 30 cm apart with the distance of 1.5 metre between each pair of rows.

Irrigation
Irrigation is done immediately after sowing, again on 3rd day and after once in a week.

Application of fertilizers
Apply FYM 25 t/ha, 90 kg each of NPK as basal. 45 kg each of NPK is applied as top dressing on 20 days after sowing.

After cultivation
Weeding and staking are done at 20 days after sowing.

Plant protection
Plant protection
Pests
Leaf hopper, aphids, and glasshouse whitefly
Leaf hopper can be controlled by spraying Methyl demeton 25 EC or Dimethoate 30 EC at 2 ml/lit.

Pod borer
Pod borer can be controlled by spraying Carbaryl 50 WP 2 g/lit.

Diseases
Mosaic
Remove the affected plants and spray with systemic insecticides to control insect vectors.

Powdery mildew
Powdery mildew can be controlled spraying Wettable sulphur at 2 g/lit or dust with Sulphur 25 kg/ha.
Rust
Rust disease can be controlled by dusting with Sulphur @ 25 kg/ha.

Anthracnose
Remove the affected plants and pods and spray with Mancozeb 2 g/lit.

Yield
Green pods 8 - 10 t/ha in 90 to 110 days.

 
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