30-10-2020

भाकृअनुप - भारतीय मक्का अनुसंधान संस्थान

ICAR - Indian Institute of Maize Research

(ISO 9001:2015 certified)

Nurturing Diversity, Resilience, Livelihood & Industrial Inputs

Meghalaya

Information on state recommendations:
Disease management –
Turcicum Leaf Blight (TLB): Exserohilum turcicum

i. Spray Mancozeb or Zineb @ 2-4 g/litre at 10 days interval after first appearance of the disease.
ii. Cultivation of Resistant varieties

Maydis leaf blight (MLB) or Southern corn leaf blight (SCLB): Bipolaris maydis (also known as Cochliobolus heterostrophus in its teleomorph state)

i. Spray with Mancozeb @ 2 g/ lit of water.
ii. Resistant varieties – Deccan, VL 42, Prabhat, KH-5901, PRO-324, PRO-339, ICI-701, Deccan 109 etc.

Fusarium stalk rot: Fusarium moniliforme

i. Application of potassic fertilizers reduces infection.
ii. Seed from infected areas should not be planted.
iii. Rotation with other crops.
iv. Resistant varieties – Ranjit and Ganga 5

Bacterial stalk rot: Erwinia chrysanthemi pv zeae

i. Bleaching powder containing 33% chlorine @ 10 kg/ha as
ii. soil drench at pre-flowering stage
iii. Planting crop on ridges.
iv. Avoid water logging and proper drainage

Pest management –
Fall Army worm (FAW): Spodoptera frugiperda

  1. On a small scale infestation hand-pick the egg mass and larvae to destroy the pest or apply the handful of sand or soil mixed with lime (9 soil: 1 lime in the pest attacked leaves whorl to kill the larvae.
  2. Alternatively, destruction of egg mass and larvae is done by crushing or immersing it in kerosene oil after hand picking.  
  3. Pheromonal control traps can be used (5 traps/acre) for mass trapping and destruction of male moth.
  4. using some bio-formulation such as 5% Neem Seed Kernel Emulsion or Azadirachtin 1500ppm @ 5ml/l water, Bacillus thuringiensis var. kurstaki formulations (Dipel 8L @ 2ml/l water or Delfin 5WG @ 2g/l water), Entomopathogenic fungi Metarhizium anisopliae (1 X 108 cfu/g) @ 5g/l and/or Nomuraea rileyi rice grain formulation (1 X 108 cfu/g) @ 3 g/l water.
  5. Seed treatment: Chlorantraniliprole 19.8% + Thiamethoxam 19.8% FS @ 6 ml/kg of seed (protects seedlings for initial 2 weeks).
  6. Spray (whorl application; if more than 10% plants have infestation) any of the following pesticides may be used. If more than one spray is required, pesticides can be alternated for better control.
  • Chlorantraniliprole 18.5 SC (80 ml/acre) @ 0.4ml/L
  • Thiamethoxam12.6% + Lambdacyhalothrin 9.5% ZC (50 ml/acre) @ 0.25 ml/L
  • Spinetoram 11.7% SC (100 ml/acre) @ 0.5 ml/L
  • Emamectin benzoate 5% SG (80 g/acre) @ 0.4 g/L

Stem borer: Chilo partellus

  • Mix any of the following granular insecticides with sand to make up a total quantity of 50 kg and apply in the leaf whorls on the 20th DAS Phorate 10% CG10 kg/ha Carbaryl 4% G 20 kg/ha.
  • Carbaryl 50 WP 1 kg/ha on the 20th day of sowing (500 l of spray fluid/ha)
  • Dimethoate 30% EC 660 ml/ha

Pink stem borer: Sesamia inferens
Spray phosalone 35% EC at every 20 days interval

Corn worm/Earworm: Helicoverpa armigera

i. Set up sex pheromone traps at 12/ha
ii. Two applications of NPV at 10 days interval at 1.5 X1012 POB along with crude sugar 2.5 kg + cotton seed kernel powder 250 g on the ear heads
iii. Apply any one of the following on 18th day after panicle emergence
Carbaryl 10 D 25 kg/ha
Malathion 5 D 25 kg/ha
Phosalone 4 D 25 kg/ha

Agronomic recommendations: Not available