Ludhiana PAU Issues Urgent Alert: Hidden Pests Lurking in Net‑Covered Polyhouses

In a recent bulletin that has set many growers on alert, the Punjab Agricultural University (PAU) in Ludhiana has sounded a clear warning: the very nets that farmers rely on to protect their polyhouses might be shielding a silent threat. Yes, the very same mesh that keeps out harsh weather could be harbouring tiny, hard‑to‑spot insects that devastate crops.

According to the university’s extension officers, a range of pests – notably whiteflies, thrips and some species of aphids – love to nest under the netting. They’re small, they’re fast, and they’re notoriously good at staying hidden until they’ve already caused significant damage. The result? Stunted growth, leaf yellowing, and in severe cases, total crop loss.

“We’ve seen several farms where the damage was only noticeable after weeks of reduced yield,” said Dr. Harpreet Singh, a senior entomologist at PAU. “The insects aren’t visible at a glance, especially when the net is tightly stretched. That’s why regular, careful inspection is vital.”

What does this mean for the average farmer? First, don’t assume that a sealed polyhouse equals a pest‑free environment. The university recommends a simple, yet disciplined routine: inspect the underside of nets every five to seven days, look for any tiny white specks or moving dots, and use a handheld magnifier if possible.

Second, integrate biological controls wherever feasible. Releasing natural predators such as lady beetles or using neem‑based sprays can keep pest populations in check without resorting to heavy chemicals. PAU also suggests rotating crops within the polyhouse and maintaining proper ventilation – both steps that reduce the micro‑climate that many of these insects favour.

Lastly, farmers should keep records. Note the dates of inspection, any pest sightings, and the measures taken. Over time, this data becomes a powerful tool, helping to predict future outbreaks and plan timely interventions.

The message from PAU is unmistakable: vigilance, not complacency, will protect the hard‑earned gains of polyhouse farming. As the agriculture community in Ludhiana and beyond adapts, a little extra attention today could save a whole season’s worth of harvest tomorrow.