In high-tech greenhouse tomato and cucumber production, we carefully monitor EC, pH, radiation sums and irrigation strategy. However, one parameter that is often overlooked — yet can significantly influence plant performance — is dissolved oxygen (DO) in the nutrient solution.

Amid the usual distractions of modern growing life, it’s easy to forget that Autumn 2026 is just around the corner. As day length shortens, now is the critical moment to review and adjust your irrigation strategy. Unlike previous years that brought prolonged dry spells or extreme heat, this year’s weather has been variable. Across the country, many regions are already seeing heavy rainfall and several cloudy days in a row. While this is great for replenishing water reservoirs, it also creates challenges once the sun returns: crops may wilt, and the temptation to overwater is high. My advice: keep substrate water content and EC close to pre-cloudy levels.

What if plants could tell us exactly when and how much water they need?

Delta-T Devices is providing WET150 multi-parameter soil sensors and GP2 advanced data loggers and controllers to the British Beet Research Organisation (BBRO) for use in important drought and water deficit research projects.

Following Blight, Botrytis now becomes the main threat — act early to avoid compounding issues. Energy costs are currently a major burden for greenhouse growers. As a result, many are forced to make difficult decisions about how much energy to invest in climate control........

Sheep’s wool could be a solution for both the sustainability and supply challenges for indoor growers and nurseries.