Grains Research and Development

South (160 results)

  • African Black Beetle

    Heteronychus arator

    Region
    South
    Larvae are white and “C” shaped, up to 25 mm long with a brown head and three pairs of legs. Adults are shiny, black, cylindrical, and are up to 12 mm long....
  • Bluegreen Aphid

    Acyrthosiphon kondoi

    Region
    South, National, North, West
    Adults are 3 mm long, may have wings, vary from grey- green to blue-green and have two long siphuncles that extend beyond the base of the abdomen. They are normally found on the upper part of the plant, particularly on growing points. Nymphs are similar but smaller in size.[test]...
  • Bluegreen Aphid

    Acyrthosiphon kondoi

    Region
    West, National, North, South
    Adults are 3 mm long, vary from grey-green to blue-green and may have wings. They are normally found on the upper part of the plant, particularly growing points. Nymphs are similar but smaller in size....
  • Bluegreen Aphid

    Acyrthosiphon kondoi

    Region
    North, National, South, West
    Adults are 3mm long, vary from grey-green to blue-green and may have wings. Adults have siphunculi (tube-like projections on either side at the rear of the body) that extend past the body. They are normally found on the upper part of the plant, particularly growing points. Nymphs are similar but...
  • Booklice

    Liposcelis spp.

    Region
    South
    Tiny, pale to dark brown, soft- bodied, up to about 2 mm long with protruding eyes and long thread-like antennae. Developmental period from egg to adult takes around three weeks under optimal conditions. There are six nymphal stages and they all are similar in appearance to adults but smaller and...
  • Bt

    Bacillus thuringiensis

    Region
    South
    This naturally occurring soil bacterium produces spores that contain a toxin. Several strains can infect and kill insects, however larvae must eat Bt for it to be effective. A strain may be specific to an insect group eg. moths. Because of this property, Bt has been developed for insect control....