Expert Advisory Details

Cotton Advisory from PAU

To keep weeds under check, give hoeing. Apply 33 kg urea/acre to varieties, 45 kg to Bt cotton on the appearance of first flower. Use PAU LCC for need based urea application. Apply 4 sprays of 2% potassium nitrate (13:0:45) solution at weekly intervals, starting at flower initiation. Spray against whitefly should be done when population reaches 6 adults per leaf in the upper canopy of plants before 10 AM with Polo/ Craze/ Ruby/ Ludo/ Shoku 50 WP (diafenthiuron) @ 200 g/acre or Ulala 50 WG (flonicamid) @ 80 g/acre or Osheen 20 SG (dinotefuran) @ 60 g/acre or Applaud 25 SC (buprofezin ) @ 400ml or Dantotsu 50 WG (clothianidin) @ 20g or Lano/Daita 10 EC (pyriproxyfen) @ 500ml or Oberon/voltage 22.9 SC (spiromesifen) @ 200ml/acre or Fosmite/Volthion/Goldmit 50 EC (ethion) @ 800 ml/acre or Nimbicidine/Achook (neem based) @ 1 litre/acre. Initiate spray against jassid when ever some of the fully formed leaves in the upper canopy show yellowing and curling at the margins on 50 percent on the plants. Use Keefun 15EC (tolfenpyrad) @ 300ml/acre or Ulala 50 WG (flonicamid) @ 80 g/acre or Osheen 20 SG (dinotefuran) or Imidacel/Markdor/Isogashi 17.8 SL/Confidence 555/Confidor 200 SL (imidacloprid) @ 40 ml/acre or Actara/Extra Super/ Dotara/ Thomson 25 WG (thiamethoxam) @ 40 g/acre in 125-150 litres of water. Attack of mealybug can be checked by spraying 500 ml Applaud/Tribune 25 EC (buprofezin) using 125-150 litres of water per acre. To protect the crop from bollworm and tobacco caterpillar damage, the insecticides given for the control of bollworm and tobacco caterpillar in Table 1 are recommended. These should be sprayed using 125-150 litres of spray material per acre with manually operated knapsack sprayer or 75 litres with the shoulder mounted power sprayer and tractor mounted sprayer when the damage in shed fruiting bodies exceed 5% and thereafter spray as and when need arises.