New greenhouse research finds that tomato sap readings can shift with leaf position, tissue age, plant part and growth stage, making strict sampling consistency essential.

A University of Arkansas system for furrow irrigated rice used 27 percent less irrigation water and produced 15.3 more bushels an acre in a three year comparison. It is now commercially available.

A pulsed metal mesh killed tested grass like seedlings and held living broadleaf weeds below the barrier, but cost and crop scale use remain unproven.