COBC 1
Irrigated : Throughout the year.
Rainfed : June – July and September – October
25 kg/ha.
First irrigation after sowing, second on third day and thereafter once in ten days.
Apply FYM 12.5 t/ha, NPK 75, 60, 20 kg/ha as basal, 75 kg N and 20 kg K top dressed on 25th day after sowing
First weeding : 15 days after sowing.
Earthing up and top dressing : 25 days after sowing.
De-tasseling (removal of male flowers) : 40 – 45 days before pollen shedding
Shoot fly Atherigona orientalis
Seed treatment with Imidacloprid 48% FS @1kg/100 kg seeds or thiamethoxam 30% FS @
8 g/kg of seeds or Spray Methyl demeton –25 EC@ 1 ml/lit
Spodoptera frugiperda – New invasive pest
Good Agricultural practices for management of Spodoptera frugiperda
a) Deep Ploughing in order to expose the pupae of FAW to sun light and avian predators thereby curtailing the chance of emergence of next brood of FAW and occurrence of FAW for the next season.
b) Application of neem cake @ 250 kg per ha in soil at the time of ploughing to reduce the emergence of adults from pupae.
c) Seed treatment with Beauveria bassiana 10 gram per kg of seed (or) imidacloprid 70 WS (or) thiamethoxam 70 WS @ 10 gram per kg of seed.
d) Adopt a spacing of 60 x 25 cm for irrigated maize and 45 x 20 cm for rainfed maize.
Closer planting always facilitates for quick movement or spread of the larvae in between plants
e) Leave rogue spacing of 75 cm for every 10 rows of maize mainly to facilitate easy spraying during cob formation stage and to minimize FAW damage during cob formation and cob maturity stages
f) Use solar light trap / battery chargeable light trap / ordinary electric light fitted over a wide pot or bowel containing kerosene mixed water @ 2-3 no. per hectare at random places in the length and breadth of the field. This can be shifted to various places in
the field in rotation to monitor / mass trap the adults.
g) Cultivation of short duration varieties of cowpea, sunflower, gingelly, sorghum and mari gold as border crop to attract, conserve and enhance the activity of natural enemies like parasitoids and predators
h) Manual collection and destruction of egg mass and various stages of larvae of FAW from early stages of crop to reduce the population build up of the pest.
i) Conservation of existing natural enemies like dragon flies, damsel flies, green lace wing flies, and lady bird beetles by avoiding non-recommended insecticides, incorrect method of application of insecticides, excess dosage of insecticides, and mixture of pesticides.
j) Application of Metarrhizium @ 1 Kg per hectare (or) 1 litre per hectare
k) Apply Metarrhizium anisopliae formulation @ 4 kg /ha (1×108 CfUs/gm) or 3 litre/ha
((1×109 CfUs/gm) or Need based spraying of azardirachtin 1 EC – 2 ml per litre
The picking of cobs can be done from 50 days after sowing. Crop duration is 65 days.
Tender cob (baby corn) : 6660 kg/ha
Green fodder : 32.2 t/ha