Field peas

Field peas are one of the oldest domesticated crops and are now grown in many countries for both human consumption and stockfeed. They have a range of growth habits at maturity, from trailing (which can be difficult to harvest) to erect types. The development of semi-leafless/semi-dwarf types have given growers options with better standing ability which helps with harvesting. In these plants, the leaves have been modified into tendrils which tend to wrap themselves together and hold the plant upright.

There are five seed types of field pea of which only two, Dun and White seed types, are grown in Western Australia. Dun varieties have greenish-brown (dun) seed coats and yellow cotyledons and Australia is currently the only country in the world which grows and exports dun type field peas. 

Department of Agriculture and Food, Western Australia contributes to Pulse Breeding Australia to evaluate potential new varieties. Good variety options are available for Western Australian growers suited to a range of soil types and growing seasons.

Articles

  • Affected plants are stunted with reduced root systems

    Sulfonlyureas, imidazolamines and sulfonamides are systemic herbicides that are used for pre and/or post emergent grass and/or broadleaf weed control in cereals and are mostly highly toxic to peas.

  • The first sign is yellowing/ reddening and sometimes interveinal chlorosis of new growth

    Glyphosate is a systemic knockdown herbicide that is used extensively for brown fallow, summer weed or pre-seeding weed control, or selective weed control in glyphosate resistant crops.

  • Darker coloured plants from induced phosphorus deficiency

    Early moisture stress may affect germination and early growth. Water stressed seedlings are more severely affected by other constraints.

  • Fluffy mouse-grey spore masses on the leaf underside

    Low levels of downy mildew Perenospora viciae are sometimes noticed in field pea crops late in winter, but crops usually grow away from it during the longer warmer spring days.

  • Sprayed plants rapidly become pale

    This includes contact herbicides from a range of chemical groups that require uniform spray coverage to be fully effective.

  • Middle leaf yellow marginal necrosis on dun-type pea

    White seed peas are susceptible to boron toxicity, but the brown-seeded Dun type grown in Wetern Australia is rarely affected.

     

  • Leaf spots that turn yellowish and later brown and papery

    Bacterial Blight (Pseudomonas syringae pv.pisi) is rarely seen in Western Australia.

  • Green peach aphid (top), bluegreen aphid (centre), cowpea aphid (below)

    Small soft-bodied winged or wingless insects that damage field peas grown in Western Australia  through transmission of viruses rather than direct feeding damage.  Main species are pea aphid (A

  • Smaller plants with pale new growth

    Sulphur (S) deficiency is rare in Western Australia as field peas are generally grown on heavy-textured soils.

  • Mild chlorosis and mosaic vein clearings: PSbMV

    It can be difficult to distinguish plant disease symptoms caused by viruses in pea plants, as viral foliage symptoms are often similar to those caused by nutritional deficiencies, herbicide damage