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Disease & Insect Control: For the effective protection against insects and disease, identification of the enemy, selection of correct plants protection measures, its quantity, time & method of application is of immense importance. Major insects and disease of rice & their control measure is given in the table below-

Crop Disease/lnsect & Symptoms Pesticides & their doses
(per hec.)		 Time of application
Paddy Thumb 1
 Sheath blights
  • First symptoms are greenish gray spots that develop on the leaf sheaths near the waterline.
  • The elliptical or oval, about 1 cm long spots enlarge, lengthen to 2 or 3 cm, and join.
  • The border of each lesion and the color variation of the lesions give a distinct pattern to the infected area.
  • Under favorable humid conditions, leaf blades in contact with adjacent infected culm also become infected.
  • Symptoms are usually distinct during flowering or maturing stages.
 Contaf ( 750 ml) / Sheathmar (750ml) As soon as symptoms appear
Paddy Thumb 2
 False smut
  • Symptoms become visible as grains start to mature.
  • Individual grains of the panicle are transformed into a mass of spores that are greenish outside and yellow orange on the inside.
  • Young Spore balls measure 1 cm and longer when mature.
  • Chlamydospores cannot be easily freed from the smut balls because of the presence of a sticky material.
 Propiconazole (250 ml) /Copper oxychloride (625g ) First spray at flower initiation & 2nd sprays 7 days after 1st spray

OTHER DISEASES

Disease /Insect & Symptoms Pesticides & their doses
(per hec.)		 Time of application
Stem borer Cartap 4G (25kg) / Regent 3G (25kg) 3-4 weeks after transplanting
Leaf Folder Lambda cyhalothrin 2.5 EC (500 ml ) 1-2 affected leaf/ plant
Gall midge Quinalphos 25 EC (500ml) 1 gall/
Plant hopper Imidacloprid 17 SL (150ml) 5-10 hopper / plant
Bacterial blights Streptocycline (15 g) + Copper Oxychlorides (625 g) As soon as symptoms appear
Blast Tricyclazole (300g) 5% affected leaf