Expert Advisory Details

In August month, how to control these insects of paddy

Rice Stem Borers: The larvae bore into the stems of young plants and dead hearts. When these attack the old plants of paddy, then empty and erect white ear-heads are produced. The fields showing more than 5 percent dead hearts (ETL) should be sprayed with 20 ml Fame 480 SC (flubendiamide) or 170 g Mortar 75 SG (cartap hydrochloride) or one litre of Coroban/ Dursban/ Lethal/ Chlorguard/ Durmet/ Classic/ Force 20 EC (chlorpyriphos) in 100 litres of water per acre. These insecticides may be repeated as and when damage reaches economic threshold level. In basmati rice, when there are more than 2% dead hearts, apply Fame 480 SC @ 20 ml or Mortar 75 SG @ 170g or Coragen 18.5 SC (chlorantraniliprole) @ 60 ml or one litre of Coroban/Dursban/ Lethal/ Chlorguard/ Durmet/ Classic/ Force 20 EC in 100 litre of water per acre. In addition to these insecticides, Ferterra 0.4 GR (chlorantraniliprole) @ 4 kg or Padan/ Caldan/ Kritap/ Sanvex/ Nidan/ Marktap/ Miftap/ Katsu 4G (cartap hydrochloride) @ 10 kg/acre or Vibrant 4 GR (thiocyclam hydrogen oxalate) @ 4 kg or Regent/ Mortel/Mipro-G/ Mahaveer GR/ Shinzen 0.3 G (fipronil) @ 6 kg or Dursban 10 G (chlorpyriphos) @ 4 kg per acre can also be used in standing water in basmati rice. These insecticides also control leaf folder in addition to stem borers. 

Leaf Folder: The larvae of this insect fold the leaves, eat out the green tissues and produce white streaks. Control this pest when the leaf damage reaches 10 per cent (ETL) by spraying 20 ml Fame 480 SC or 170 g Mortar 75 SG or one litre of Coroban/Durmet/Force 20 EC in 100 litres of water per acre. Application of Ferterra 0.4 GR @ 4 kg or Padan/ Caldan/ Kritap/ Sanvex/ Nidan/ Marktap/Miftap/Katsu 4G @ 10 kg or Regent/Mortal/Mifpro G/ Mahavir GR/Shinzen 0.3 G @ 6 kg or Dursban 10 G @ 4 kg/acre recommended for control of stem borer in basmati rice also control leaf folder.

Plant hoppers: These insects can be controlled by spraying the crop with 120 g Chess 50 WG (pymetrozine) or 40 ml Confidor 200 SL or Crocodile 17.8 SL (imidacloprid) or 800 ml of Ekalux/Quinguard/Quinalmass 25 EC (quinalphos) in 100 litres of water per acre. For better results use knapsack sprayer while directing its spray towards the base of the plants.

Note - In Basmati Paddy,Pesticides should be used only if 2% dead hearts appears.