Lab lab or Dolichos bean
Botanical Name - Purpureus var typicus
Family -Fabaceae

CO 6, CO 7, CO 8, CO 9, CO 10, CO 11, CO 12, CO 13, CO (GB) 14, Arka Jay and Arka Vijay.

CO 1, CO 2, CO 3, CO 4, CO 5 and Pusa Early Prolific.


Well drained loamy soil with pH range of 6.5-8.5 is required.

Climate –

It can be grown in tropical and subtropical region. But, it is susceptible to frost and very high temperature.

Treat the seeds with three packets (600 g) of rhizobial culture per ha using rice gruel as binder. Dry the treated seeds in shade for 15 – 30 minutes before sowing.

Bush type – Throughout year;
Pandal type – July – August.

25 kg/ha for Bush type and 5 kg/ha for pandal type. Dibble single seed 30 cm apart on one side of the ridge formed at a spacing of 60 cm for bush type. For pandal type, 2 – 3 seeds/pit at 2 x 3 m spacing. Spacing for CO 1 Dolichos bean is 1 x 1 m.
Plough the land to a fine tilth. Form ridges and furrows 60 cm apart for bush types. Dig pits of 30 cm x 30 cm x 30 cm at required spacing and fill it up with FYM and soil for pandal type

Immediately after sowing and on 3rd day, thereafter once a week.

Hoe and weed thrice. Provide stakes to reach pandal of 2 m height and train the vines on pandal.

(a) Basal dressing for bush type
Manures and fertilizers                            Irrigated                                       Dry
FYM                                                               12.5 t/ha                                12.5 t/ha
N                                                                    25 kg/ha                                12.5 kg/ha
P                                                                    50 kg/ha                                 25 kg/ha
K                                                                            –                                                –
b) For pandal type
Apply 10 kg FYM per pit (20 t/ha), 100 g of NPK 6:12:12 mixture as basal and 10 g N per pit after 30 days. Apply 2 kg each of Azospirillium and Phosphobacteria per ha at the time of sowing.

Bush type
Basal soil application of 25kg ZnSO4 + 10kg Borax per ha 25kg FeSO4/25kg
MnSO4/5kg CuSO4 per ha if the soil is deficient in the particular micronutrients

Pandal type
25 kg of ZnSO4 + 10 kg Borax as basal soil application

Pod borer
Spray Azadirachtin 0.03% (300ppm) @ 2.5 ml/lit thrice at fortnightly intervals.

Sucking pests
Spray Malathion 50 EC @ 1 ml/l or Dimethoate 30 EC @ 1 ml/l or Methyl demeton 25 EC @ 1 ml/l at 15 days interval to control aphids and other sucking insects.

Powdery mildew
Spray wettable sulphur @ 2 g/l or carbendazim @ 0.5 g/ l

Bush type can be harvested two months after sowing. But pandal type takes three
months after sowing

Pandal type: 12 – 13 t/ha
Bush type :    8 – 10 t/ha

Crop growing districts                                    Dindigul, Erode, Salem, Theni
Major markets in Tamil Nadu                      Periyar Vegetable Market, Koyambedu, Chennai Gandhi Market, Oddanchathiram, Natchipalayam                                                                                vegetable market, Coimbatore