The botanical name of Lab lab; also called Dolichos bean is Lab lab purpureus var. typicus; it belongs to family Fabaceae
Varieties - Bush types
CO 6, CO 7, CO 8, CO 9, CO 10, CO 11, CO 12, CO 13, Arka Jay and Arka Vijay.
Pandal types: 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.
Rhizobial treatment: Treat the seeds with three packet (600 g) of Rhizobial culture per ha.
using rice gruel as binder. Dry the treated seeds in shade for 15 – 30 minutes before sowing.
Season: Bush type throughout year; Pandal type July – August.
Seed rate and spacing: 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 beans is 1 x 1 m.
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.
Irrigation: Immediately after sowing and on 3rd day, thereafter once in a week.
After cultivation: Hoe and weed thrice. 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 Azospirillum and Phosphobacteria per ha at the time of sowing.
Plant protection against Pests
Pod borer: Spray carbaryl 50 WP thrice at fortnightly intervals at the rate of 2 g/lit. Dust with carbaryl 10 D at the rate of 25 kg/ha or endosulfan 35 EC @ 2 ml/lit.
Sucking pests: Spray malathion 50 EC 1 ml/lit or dimethoate 30 EC 1 ml/lit or methyl demeton 25 EC 1 ml/lit or fenthion 1000EC 1 ml/lit at 15 days interval to control aphids and other sucking insects.
Protection against Diseases
Powdery mildew
Spray Wettable sulphur 2 g/lit or Carbendazim 0.5 g/ litre.
Yield
Pandal type : 12 – 13 t/ha in 240 days.
Bush type : 8 – 10 t/ha in 120 days.
