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.


Mechanical engineering encompasses most of the physical components or the design, analysis and manufacture of those components. This includes structures and their fabrication. RPL has extensive mechanical capabilities including:

Computer Aided Design (CAD)

CAD allows machines or other components to be fully designed on a computer before any material is cut. This allows all interactions between parts to be modelled ensuring they work together, simulation of motion paths, calculation of component weight, analysis of stress on parts for service life, photo realistic rendering of appearance and complete Bill of Materials to be generated. CAD is a valuable and powerful tool to assist with product validation and technical feasibility before committing to building systems, or to model a systems dynamic performance for specifying actuators for motion control.

General fabrication

General fabrication (cutting, milling, turning, welding, etc.) is often used to build the structures that hold or the body of actual machines, RPL doesn’t just design components and systems, we build them too. 

Computer Numerical Control (CNC)

CNC machining allows high precision and complex parts to be machined that are not possible, or would be very time consuming on traditional manual machines. CNC machines also provide fast part creation and high volume production to rapidly take systems beyond prototypes.

Computer Aided Manufacturing (CAM)

CAM by combining CNC machining with CAM, machining instructions are efficiently created for CAD designed parts providing fast fabrication turnaround or machining of complex surfaces and other part features.

3D Printing or additive manufacture

3D Printing or additive manufacture for rapid prototyping or small scale production. RPL often uses printed parts to test their suitability or fit in a system. However, RPL also has access to outsource parts printed from titanium or stainless steel for high strength complex parts. 3D printing allows for very complex parts to be created that are not possible with other machining processes. This can provide significant design flexibility for problem solving.


Pneumatics uses pressurised gas to produce mechanical motion. It is a common and cost effective method of achieving many automation tasks.


Hydraulics used pressurised fluids to produce mechanical motion. It is commonly used in industrial machinery for its power density.

Modern production processes

Whether it is internal capability or outsourced, RPL uses a wide range of modern methods of making parts. Viability of different options often depends on production requirements and volumes and these can be assessed on a case-by-case basis.