Using Tissue Testing, Sap Testing and the Pre-Sidress Soil Nitrate Test (PSNT) to Assess Nitrogen Needs in Vegetable Crops

Gordon Johnson, Extension Ag Agent, Kent Co.; gcjohn@udel.edu Nitrogen management in vegetable crops has often not been given the priority it deserves. Growers have fertilized according to crop needs using recommendations from published sources and from experience. However, as nitrogen… Continue Reading