Practical tips and strategies for greenhouse growers on climate steering, VPD management, transpiration control, and seasonal cultivation challenges.
Nieuwe Oogst covers Voltiris spectral panels that filter NIR while passing PAR light. Sigrow monitors plant temperature at the Delphy trial — here is why crop-level data matters for evaluating any climate technology.
Light makes the sugars, temperature spends them. RTR connects the two and shows whether your crop is working in balance.
Air and crop temperature both climbed for days. Crop VPD stayed below stress levels the whole time. Only one of those tells you what the crop was doing.
A grower said he no longer thinks of us as a supplier, but as a partner. What sat behind that had nothing to do with the sensors.
Open greenhouse ventilation wide in extreme heat and you dump the humidity and CO2 the crop needs, so VPD spikes until the stomata close. Here is how to vent without stalling the crop.
VPD drives how hard your crop transpires, how stomata open, and how calcium moves. Here are the right ranges, the risks outside them, and how to measure VPD continuously at crop level with Pixel.
Opening the vents isn’t always the answer to greenhouse heat stress. Why limiting ventilation can keep crop VPD healthy above 30°C — and the crop-centric data that makes it safe.
A tomato grower called with a familiar problem: blossom end rot, no obvious stress, irrigation looking fine, calcium levels good. The answer was not in his irrigation schedule. It was in what happened days earlier, on a cold, clear spring night. Calcium moves through transpiration — and only through transpiration The day before had been…
“Does my crop need more light or more temperature?” “It depends.” A very unsatisfactory answer to many questions in greenhouse horticulture — and yet probably one of the most accurate ones. There is hardly ever a single, clear response; it almost always depends on the crop, the variety, the growth stage, the time of year,…
A new field report from Delfgauw confirms what leaf-level sensor data has been hinting at for years: Mycosphaerella in LED cucumber is, at its core, a transpiration problem. The shift from HPS to LED changes the transpiration equation, and the control strategies that worked under 85 µmol don’t translate to 200 µmol. Dutch horticulture title Groentennieuws published…
