So, Liang Dong and colleagues set out to design a stand-alone patch that quickly and accurately detects the hydrogen peroxide ...

This reusable patch (shown on the underside of a tobacco leaf) could help growers make decisions earlier to maintain the health of their crops through earlier detection of plant stress.

Environmental conditions can cause damaging stress to plants, posing challenges for home gardeners and farmers. Therefore, early detection — before leaves visibly discolor, wilt or wither — is crucial ...