Warm Days, Cold Nights: Why Your Tomato Crop’s Dew Point Margin Matters
A respectable 24-hour average can hide a night on the dew point and a morning root zone that can’t keep up. Here’s the arithmetic behind both, and three fixes, cheapest first.
Spectral Solar Panels Keep Greenhouses Cooler — Why Plant Temperature Monitoring Matters
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.
More Light or More Temperature? How RTR Answers the Question
Light makes the sugars, temperature spends them. RTR connects the two and shows whether your crop is working in balance.
Limiting Ventilation in a Heatwave: What Crop VPD Shows
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.
From Supplier to Partner: What Growers Want from Greenhouse Technology
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.
Greenhouse Ventilation in Extreme Heat: Why VPD Spikes
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 in the Greenhouse: What It Is and How to Steer It
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.
Can Limiting Ventilation Solve Heat Stress in Greenhouses?
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.
Blossom End Rot in Tomatoes: It’s a Transpiration Problem
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 Your Crop Need More Light or More Temperature? Understanding RTR
“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,…
