More Info about Improved Onion "SERRY"
May-June is best season for planting.
Seed rate: 10 kg/ha seeds are required for a hectare.
Treat the seeds with Azospirillum @ 400 g/kg of seed using rice gruel as adhesive, dry under shade for 30 minutes and sow them. Apply VAM (Vesicular Aurbuscular Mycorhizal) 1 kg/sq.m in the beds along with FYM 10 kg/sq.m before sowing.
Plant 45 days old seedlings at a spacing of 10 cm apart on both the sides of the ridges.
Irrigation: After establishment irrigate at weekly intervals.
Application of fertilizers:
Apply FYM 25 t/ha, Azospirillum 2 kg and Phosphobacteria 2 kg/ha, N 50 kg, P 150 kg and K 75 kg/ha as basal dose and N 50 kg/ha as top-dressing is done at 30 days after planting. Apply Zinc
Thrips and onion fly:
Thrips and onion fly can be controlled by spraying Methyl demeton 25 EC 1 ml/lit or Dimethoate 30 EC 1 ml/lit with Teepol 0.5 ml/lit.
Cut worms can be controlled by drenching the soil with Chlorpyriphos @ 2 ml/lit.
Application of Carbofuran 3G 1kg a.i./ha or Phorate 10G 1 kg a.i./ha at 10 days after transplanting controls the nematode infestation.
Leaf spot disease can be controlled by spraying Mancozeb 2 g/lit or Copper oxychloride 2 g/lit. Add 1 ml of Teepol to 1 lit of the spray fluid.
Irrigation is stopped on a week before harvesting. Harvest is done when 75 % of leaves dried off or top fall stage.
The crop yields about 15 – 18 t/ha in 140 – 150 days.
Fertigation Schedule for Onion : Recommended dose: 60:60:250 kg / ha
So total requirement of fertilizers are as per below according to fertigation chart :
- 75% remaining dose of Phosphorus applied as super phosphate 45kg*6.25 = 281.25 kg/ha.
- 19:19:19 = 32 kg / ha
- 13:0:45 = 53 kg / ha
- 12:61:0 = 14.92 kg / ha
- Urea = 7 kg / ha
- Ammonium Sulphate = 211 kg/ha