| Major Weeds |
 |
 |
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| Amaranthus spinosus |
Amaranthus viridis |
Brachiaria reptans |
 |
 |
 |
| Cleome gynandra |
Coccinia indica |
Convolvulus arvensis |
 |
 |
 |
| Cyperus rotundus |
Euphorbia hirta |
Ipomea sp |
 |
 |
 |
| Parthenium hysterophorus |
Phyllanthus niruri |
Trianthema portulacastrum |
Weed Management in Pure Crop of Sugarcane
- Wherever weed menace is higher, one line weeding along the crop row and spade digging of ridges have to be done on 30, 60 and 90 DAP
- Spray Atrazine 2 kg or Oxyflurofen 750 ml/ha mixed in 600 liters of water as pre emergence herbicide on the 3rd day of planting, using deflector or fan type nozzle fitted with knapsack sprayer.
- The pre emergence application of atrazine @ 1.0 kg a.i. ha-1 on 3 DAP followed by post emergence directed application of glyphosate @ 1.0 lit ha-1on 45 DAP with hood+ one hand weeding on 90 DAP registered the maximum cane yield.
- If pre-emergence spray is not carried out, go in for post-emergence spray of Grammaxone litre + 2,4-D sodium salt 2.5 kg/ha in 600 liter of water on 21st day of planting.
- If the parasitic weed striga is a problem, post-emergence application of 2,4-D sodium salt @ kg/ha in 500 litre of water/ha may be done. 2, 4-D spraying should be avoided when neighbouring crop is cotton or bhendi. Apply 20% urea also for the control of striga as direct spray.
- Pre- plant application of glyphosate at 2.0 kg ha-1 along with 2% ammonium sulphate at 21 days before planting of sugarcane followed by post emergence direct spraying of glyphosate at 2.0 kg ha-1 along with 2% ammonium sulphate with a special hood on 30 DAP suppressed the nut sedges (Cyperus rotandus) and provided weed free environment.
- If herbicide is not applied work the junior-hoe along the ridges on 25, 55 and 85 days after planting for removal of weeds and proper stirring. Remove the weeds along the furrows with hand hoe. Otherwise operate power tiller fitted with tynes for intercultivation.
- Control of creeper weeds post emergence directed application of fernoxone (2, 4 –D sodium salt) @ 2 gm + 10 gm of urea per liter of water may be sprayed over the creeper weeds.
Weed management in Sugarcane intercropping system
Premergence application of Thiobencarb @ 1.25 kg ai/ha under intercropping system in Sugarcane with Soybean, blackgram or groundnut gives effective weed control.
NOTE: Raising intercrops is not found to affect the cane yield and quality.
Striga control in Sugarcane
Updated on :2013
Image Source:
-- www.agritech.tnau.ac.in
-- Dr.R.Jagannathan,
Professor of Agronomy,
TNAU, Coimbatore-3.
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