2018-19 Jade mungbean on forest soil, Kingaroy

Posted in PulseCheck–Coastal on Feb 15, 2019

2018–19 summer: Mungbean on brown forest soil, Kingaroy

Grower: Julian Cross grows mainly broadacre crops – peanuts, corn and mungbeans in rotation.

Location: Ellesmere, south of Kingaroy

Monitored area: 28 ha brown forest soil, dryland

Pre-plant preparation

  • Knockdown herbicide is applied pre-plant to control grass and broadleaf weeds.
  • 14 November – muriate of potash, DAP, zinc fertiliser applied via strip till operation.
  • 12 December 2018 – a pre-plant spray metolachlor (Dual Gold), 2,4-D and glyphosate application.

Week 1-2

Management notes:

  • 28 December 2018 – Jade mungbeans planted in twin row formation at a seed rate of 29 kg/ha.
  • 30 December – post plant pre-emergent application of Dual Gold herbicide.

Week 3

Week 4

Management notes:

  • Mungbeans are looking healthy and not too affected by the heat and dry
  • No insect concerns at the moment.

Twin rows have closed over.

Week 5

Management notes:

• Mungbeans are developing well with some minor leaf damage likely caused by grasshoppers, no control is required.

Twin rows have fully merged.

Week 6

Management notes:

  • Mungbeans received 4 mm of rain Wednesday and are looking healthy and green.
  • Flower buds are opening, and the flowers have started to emerge.
  • In some areas the flowering has ceased and pod development has started.
  • Adult mirids, heli and jassids have been observed in small numbers, all well below the economic threshold level, as well as populations of beneficial ladybugs and ants.

Flower buds are opening, and the flowers have started to emerge.

Week 7

Management notes:

  • Flowering is continuing and pods are developing.
  • Crop monitoring found heliothis and green mirids above threshold levels. A good number of beneficial insects was also observed.
  • Therefore it was recommended to the grower to apply altacor,  and ½ rate of dimethoate + salt to control these pests.
  • This will be done as soon as weather conditions allow.

Crop monitoring is critical at this stage of the crop to preserve yield potential.

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