Experiments with intrarow weed control with a camera

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Experiments with intra-row weed control with a
camera

• Pieter Bleeker

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Content

• Introduction
• Localisation of crop plant position by a light
  sencor
• Localisation of crop plant position by a camera
• Future ??
• Can a camera locate small onion plants
• Questions
• Statement

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Introduction

• Why new equipment for intra-row weeding ?
• The availably equipment cannot kill all the
  intra-row weeds, special for sow crops
• To reduce hand labour.
• In the future in a lot of crops availability of
  herbicides will be reducing.

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Sarl radis (move hoes out and in the crop row)
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Detail light sensor and reflector
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summary

• Simple
• Low cost
• For crops like lettuce good
• --
• Capacity (max. 3 km/h)
• Changing row distances
• Weed plants must be smaller than the crop

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Camera system

• Camera system can detect the crop plant and send
  a signal to a hoe

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Localisation of crop plant position
Shape and colour are important to locate the crop
plant
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The effect of the intra-row hoe
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Future ??

• Changed sowing or planting systems.
• Other intra-row weed killing systems.
• Burning
• Water cutting
• Laser
• And so on

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Different way of sowing onions

• Now 4 or 5 rows on a 1.5 meter bed
  every 3 4 cm one seed.
• Planting row distance 30 or 50 cm.
  6 7 seeds on one pot
• New, clusters also 4 or 5 rows on 1.5 meter bed
  5 seeds on a spot and
  between the spots 15 20
  cm.

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First experiments with intra-row burning
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Questions ??

• How to combine techniques and knowledge, to make
  a big step forward?
• What is the best way for intra-row
  weeding?Hoeing, burning, water cutting, laser
  etc?
• Is it worth while to combine this kind of systems
  with a autonomous vehicle?

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Future ?? Mechanical weed control without any
person ???
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Statement

• In 5 till 10 years it will be possible to
  pick-out weed plants that stand closer than one
  centimeter from the crop plant.