Abiotic in-crop constraints for wheat

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Drought

Constraint -Drought

Symptoms

Seedlings

  • Seedlings stunted, dull or wilted
  • Poor establishment
  • Leaves may curl
  • May appear as nutrient deficiency due to reduced mobility in dry soils
  • Effect may be patchy

Established plants

  • Lack of vigour
  • Dull leaf colour
  • Haying off
  • Shrivelled seed, aborted florets
  • Effect may be patchy

Damage

  • Lowered yield to total crop failure
  • Lower quality grain due to shrivelled grain/screenings

Control

Rainfall dependent. Nutrient deficiencies likely to resolve after re-wetting of topsoil.

Links and Resources

DAFWA - Drought

What to look for in paddock and on plant, what else could it be, where does it occur, and monitoring.

DAFWA - Effect of water stress on wheat in mid-late growth

Information on areas that will be affected, damage/symptoms, similar symptoms, and monitoring.

MS Word DEPI VIC - Early wheat sowing in Victoria

Page contains information on chance of frost or heat damage over a variety of sowing dates. Written 2014.


File size: 22kb
PDF DEPI VIC - Heat Stress and Frost Risk in Irrigated Wheat Crops

15 page PDF. Contains information on likelihood of frost or heat damage over a variety of sowing dates. Written 2013.


File size: 4.3mb
MS Word Sowing date, heat stress and frost risk in irrigate d wheat crops. Drought

Contains information on sowing date, frost and heat. Published 2014.


File size: 54kb