Plus Group

The Plus Group of Companies offers a range of uniquely integrated horticultural solutions both domestically and internationally. Its core passion is the long-term sustainability of horticulture delivered to our valued clients through service excellence, experience and innovation.

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GroPlus provides a world class kiwifruit orchard management service that maximises grower returns and delivers to our customers’ service excellence, product superiority and innovation.

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Pollen Plus

Pollen Plus is one of the world's largest suppliers of high quality Male Kiwifruit Pollen and artificial pollination services and solutions. Our products are available internationally and New Zealand wide.

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BioSoil & Crop specialises in sampling and analysing soil and tissues of perennial crop plants and making nutrient recommendations based on these results.

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RPL’s extensive capability goes beyond hardware
and software to deliver next generation
products and processes.

Cooperative operation and integration between multiple hardware and software segments is one of our key abilities and is often critical to high level operation. RPL develops and commercialises comprehensive systems that are tailored to industry requirements through extensive client and relevant industry consultation. From technology validation, computer 3D design, prototyping, development, integration, commercialisation, right through to commercial production, RPL has extensive capability to cover most technological requirements.


Electromechanical or mechatronic systems are those that have both mechanical structures and incorporated electronics. The electronics provides control and/or monitors any mechanical movement or physical variable (e.g. temperature or direction). These systems include motors, compasses, gyros, or even large multi-axis anthropomorphic arms.

Robotic arms (manipulators)

The ability to develop task specific robot arms provides a large advantage to solving complex automation problems and increases commercially viability. Often off-the-shelf arms are not suitable due to size, performance and/or cost restraints. By custom designing our own robots RPL can remove previous barriers to automation. This capability includes several other areas including, mechanical, electronics and kinematics (mathematical description of movement). These manipulators could be a basic single prismatic (linear) axis carriage, Cartesian robots, SCARA (Selective Compliant Assembly Robotic Arm) robots, or even more complex large multi-axis anthropomorphic robots. All of these designs have their own comprehensive embedded control systems.

Servo systems and control

A servo system has integrated feedback and control to ensure that an action is being carried out as commanded. These systems include:

  1. Motors
  2. Pneumatics
  3. Hydraulics

Stepper motors and control

Stepper motors offer a cost effective option over servo motors for many applications. By incorporating motion encoders and custom electronic control, RPL can achieve cost effective servo systems from stepper motors for many control applications, including arms.