Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu I recently had several trays of tomato seedlings that were not growing properly in 128 cell trays. They were reddish yellow in color and stunted. We moved them into 72 cell trays… Continue Reading
Jerry Brust, IPM Vegetable Specialist, University of Maryland; jbrust@umd.edu An odd problem was seen in tomato plants being grown for harvest in a greenhouse that showed blister or callus-like growths, usually along veins that first appeared on the underside of… Continue Reading
Jerry Brust, IPM Vegetable Specialist, University of Maryland; jbrust@umd.edu and Karen Rane, Plant Diagnostician, University of Maryland rane@umd.edu Over the past few weeks, we have seen several greenhouse (GH) and high tunnel (HT) vegetable (basil and tomato mostly, but also… Continue Reading
David Owens, Extension Entomologist, owensd@udel.edu Now is the time to prepare greenhouses for the 2021 planting season. Pests such as thrips and spider mites overwinter on weeds growing in the greenhouse or on weeds along the outside of the greenhouse.… Continue Reading
Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu One of the most important considerations for transplant production is managing “stretch” or height of transplants. The goal is to produce transplants of a size that can be handled by mechanical transplanters… Continue Reading
