Controllable lighting: planning an upgrade for a Russian greenhouse
When upgrading greenhouse lighting, a grower needs more than a comparison of how much light a new fixture produces. The decision also concerns the crop, existing lighting zones and maintenance arrangements. James Fleet of Bloemteknik discusses this broader view in an industry commentary published by HortiDaily.
Fleet argues that gains in LED efficacy are becoming more incremental, while control and long-term support matter increasingly. He describes lighting as a strategy for the next 5–10 years. This is a manufacturer's perspective on planning, not a rated fixture lifetime or evidence that LED efficacy has reached a physical limit.
What Bloemteknik claims for Top Crop
Bloemteknik presents Top Crop as a platform for high-wire crops. HortiDaily reports an adjustable light-module tilt of 0–45°. This describes the position of the module, not the beam angle of its optics.
The official release describes spectral adjustment and zone-specific dimming through the Wand control platform. When combined with PAR sensors, the system is designed to regulate output towards a target daily light integral, or DLI. These are descriptions of system functions. They do not establish yield gains, financial savings or compatibility with the automation installed at a particular greenhouse.
What this means for an existing Russian greenhouse
If a greenhouse already operates high-pressure sodium lighting, it is useful to distinguish fixture replacement from the introduction of new controls. Otherwise a proposal can mix the effects of different fixtures, a revised operating schedule and the expected benefits of changing the spectrum. A practical comparison starts with a description of the existing installation and then identifies each proposed change separately.
Published Russian examples illustrate why that baseline matters. The Dobryansky case describes a combination of sodium and LED fixtures for cucumbers, whereas the Avsen case concerns lighting replacement in a seedling department. These are different production tasks. Their results cannot serve as a forecast for another crop or for Top Crop. The conditions and limitations are discussed in the Russian-language guide to replacing sodium lighting with LEDs.
For an operating business, the practical starting point is the problem the investment should solve. Replacing worn equipment calls for a comparison of light distribution, consumption and maintenance under an agreed operating regime. Independent control of separate areas adds zoning and control requirements. Spectral adjustment should be discussed with the crop specialist for the intended crop and growth stage, rather than treated as a benefit simply because it appears on the options list.
Turn the production task into a specification
The engineering and agronomy teams should prepare one shared set of inputs. Area names, crops, growth stages and lighting schedules need to mean the same thing to both teams. The supplier can then calculate a defined configuration, and the greenhouse can identify the result it is being asked to accept.
- Lighting requirements. Specify the crop, growth stage, working area and target light parameters. Compare proposals under the same calculation conditions and with the same layout of measurement points.
- Controls. Identify areas requiring independent regulation and the commands the system must perform. Obtain confirmation that the proposed drivers, controller and sensors work together in the offered configuration before selecting equipment.
- On-site verification. Agree on measurement locations, operating modes and electricity metering. If automatic DLI control is included, make verification of that function part of acceptance.
- Maintenance. Define spare parts, replacement procedures, settings after component replacement and responsibility for support. Obtain these arrangements with the system documentation before purchase.
A wireless control platform does not establish compatibility with equipment already in service. A project needs an answer for the specific components and installation conditions. Likewise, an adjustable module does not determine its optimum position: that position should follow the lighting calculation for the proposed layout and then be checked on site.
Compare results and costs on the same basis
If the business is considering a trial area, it is useful to record the comparison in advance. Replacing fixtures while retaining the existing schedule is different from changing the lighting regime itself. Electricity comparisons should account for growing conditions and actual system operation, rather than relying solely on the sum of fixture ratings.
A Russian greenhouse should use its own electricity supply and operating conditions when estimating costs. The calculation can include equipment, installation, commissioning, maintenance and consumption under the chosen scenario. Without verified inputs, a single payback period for every business is not useful. A controlled-lighting scenario should be compared with straightforward fixture replacement using the same calculation basis.
For a phased upgrade, this approach supports separate decisions: whether fixture replacement is sufficient, whether new control zones are needed and whether an additional control system serves the production task. It does not assume that every available function is worth buying. Each function should address a stated requirement and have an agreed method of verification.
A practical conclusion for agronomists and engineers
The Top Crop announcement is a reason to review lighting requirements, rather than a ready-made recommendation to buy a particular platform. The agronomist defines the lighting regime and production criteria, the engineer checks implementation and maintenance, and management compares costs under agreed scenarios. An upgrade becomes a concrete investment decision when equipment functions are connected to the greenhouse's task, calculations and acceptance conditions.
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