Lab lab or Dolichos bean (Lab lab purpureus var. typicus)
Fabaceae

Varieties
Bush type
Co 6, Co 7, Co 8, Co 9, Co 10, Co 11, Co 12, Co 13, Co (Gb) 14, Arka Jay and Arka Vijay .

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

Soil
Well drained loamy soil with pH range of 6.5-8.5 is required. It can be grown in tropical and subtropical region. But, it is susceptible to frost and very high temperature.

Season
Bush type can be grown throughout year; Pandal type can be grown during July – August.

Seed rate
25 kg/ha for Bush type and 5 kg/ha for Pandal type is required.

Rhizobial treatment
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.

Preparation of field
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.

Sowing
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 sow 2 - 3 seeds/pit at 2 x 3 m spacing. Spacing for Co 1 Dolichos beans is 1 x 1 m.

Irrigation
Irrigation should be done immediately after sowing and on 3rd day, thereafter once in a week.

After cultivation
Hoeing and weeding can be done as and when necessary. Provide stakes to reach pandal of 2 m height and train the vines on pandal.

Application of fertilizers
(a) Basal dressing for bush type

(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 Azospyrillum and Phosphobacterium per ha at the time of sowing.

Micronutrients
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.

Plant protection
Pests
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 or Quinalphos 25 EC @ 2 ml/lit.

Sucking pests
Sucking pests can be controlled by spraying Malathion 50 EC 1 ml/lit or Dimethoate 30 EC 1 ml/lit or Methyl dematon 25 EC 1 ml/lit at 15 days interval to control aphids and other insects.

Diseases
Powdery mildew
Powdery mildew can be controlled by spraying Wettable sulphur 2 g/lit or Carbendazim 0.5 g/ litre.

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

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