LBG 20 (Teja) Resistant to YMV. Grains lustrous black. Matures
in 70-75 days with yield potential of 14-16q ha-1.
LBG 623 Matures in 75-80 days with yield potential of 15-17q ha-1.
Grains lustrous black.
T 9 Yields up to 10-12 q ha-1 with duration of 70-75 days. Tolerant
to YMV. Grains dull black.
WBG 26 Matures in 70-75 days with yield potential of 10-12 q ha-1.
Grains dull black.
PBG 1 Matures in 85-90 days with an average yield of 12 q ha-1.
Tolerant to storage pests and pod borers but susceptible to corynospora
leaf spot. Grains dull black.
Seeds and seeding
Sow the crop during June-July. In rice follows sowings
may be done during November-December. About 15-18kg ha-1
seed is optimum for a spacing of 30x10cm.
Treat the seed with the chemicals as under greengram.
In rice follows a population of 40 plants / m2 should be
maintained.
Fertililsers
Apply 20kg N + 50kg P2O5 ha-1 as basal
dose. Treat the seed with Rhizobium culture. Apply FYM if available.
Weed Management
Two hoeings can keep the field weed free upto 30 DAS.
Apply fluchloralin @ 2.5 /ha-1 as pre-sowing incorporation
to check weeds or spray pendimethalin @ 3.3-5.0 / ha-1 immediately after
the sowing or the next day.
Pest Management
Stemfly : Seed treatment as above. Acephate 1g l-1 or
monocrotophos 1.6ml l-1 or dimethoate 2 ml l-1
twice at weekly intervals from 15 days after sowing (if seed treatment
is not followed).
Flea beetles : Seed treatment as above. Spray endosulfan @ 2ml/l-1
or quinalphos @ 2.5ml/l-1 soon after pest appearance (if
seed treatment is not given).
Leaf folder (Marauca Sp): It folds the leaves and feeds from
inside. Spray chlorpyriphos 2.5ml l-1 or quinalphos 2.5ml
l-1 or dichlorvas at 1.0ml l-1 twice at 10 days
interval.
Pod borer like blue butterflies, spotted borers, tobacco caterpillars,
pink borer, gram caterpillar. Follow IPM measures as indicated below
against spodoptera litura (Tobacco caterpillar).
I. Cultural
Premonsoon tillage to expose pupae
Removal of alternate / collateral hosts
Early sowing to escape severe broods
Raise trap crops like castor for oviposition, larval development.
Remove egg masses, skelatenized leaves, and larvae from the trap crop.
II. Mechanical
Monitor with Pheromone traps @ 4per acre.
Dig trenches around the field to trap the migrating larvae.
Pick and destroy the grown up larvae from the main crop.
III. Biological
Spray NPV @ 500 LE ha-1
Spray B.T @ 1kg ha-1
Erect bird perches @ 20 ha-1
IV. Plant Products
Spray neem based compounds @ 5ml l-1 of water and 2.5ml l-1 of water
when sprayed in combination with any conventional insecticide.
V. Chemical Pesticides
Follow need based application.
Spray acephate @ 1g l-1 or chlorpyriphos @ 2.5ml l-1
or thiodicarb @ 1.0 l-1 or quinalphos @ 2.5ml l-1
or endosulfan @ 2ml l-1.
Use hydraulic or pneumatic hand compression sprayers (400-500/ha-1)
or Mist Blowers 135-165/ha-1).
Ensure thorough coverage (About 400-500/ha-1)
Avoid mixtures
Avoid sub-lethal dosages
Discourage synthetic pyrethroids
Adopt community approach
Disease Management
Collar Rot : Seed treatment as above
Anthracnose, Cercospora and Alternate leaf spots : Spray twice carbendazim
@ 1g l-1 or thiophanate methyl @ 1g l-1 or mancozeb
@ 3g l-1 at 15days interval.
Corynospora leaf spot : Spray twice copper oxychloride @ 3g l-1
or mancozeb @ 3g l-1 at 10 days interval.
Powdery mildew : Spray twice carbendazim @ 1g l-1 or thiophanate
methyl @ 1g l-1 at 10 days interval soon after the appearance
of the disease.
Rust : Spray twice dinocap @ 1ml l-1 + mancozeb @ 3g l-1
or Tride – morph @ 1g l-1 or Bayleton @ 1g l-1
twice at weekly intervals at 50-55 DAS.
Yellow mosaic and leaf curl virus : Grow resistant varieties like
LBG 20 and T9. Spray triazophos @ 1.25 ml or monocrotophos @ 1.5ml or
dimethoate @ 2ml per litre of water against whitefly to avoid spread
of disease. Follow seed treatment.
Recommendations
Grow greengram preceding kharif paddy in late transplanted (August
– September) areas such as tail end areas of Nagarjuna Sagar; Nizam
sagar, Sriram sagar, other medium and minor irrigation schemes including
tanks. Greengram in this situation can be sown from May end to July
end.
Grow greengram or blackgram as intercrop in pigeonpea (1:7 to 1:4)
cotton (1:2 to 1:3) and castor (1:4). Greengram is recommended for red
soils and blackgram for black soils. Greengram is preferred over blackgram
during kharif due to the problem of pre-harvest sprouting and ease of
harvesting of greengram.
Select YMV and leaf curl virus resistant greengram and blackgram varieties
as these diseases have become major constraints during kharif.
