Share

Gugino Lab Harvests Onion Field Trials

Posted: July 22, 2016

Vegetable pathology team completes onion harvest at Larson Ag Research Center and SE Ag Research and Extension Center.
Vegetable pathology team harvesting the nitrogen trial at Rock Springs | Foreground: Jennifer Petrella (L) and Laura del Sol Bautista Jalón (R) | Image: Jennie Mazzone, Penn State University

Vegetable pathology team harvesting the nitrogen trial at Rock Springs | Foreground: Jennifer Petrella (L) and Laura del Sol Bautista Jalón (R) | Image: Jennie Mazzone, Penn State University

This week Dr. Beth Gugino’s vegetable pathology team finished harvesting onions from field trials at the Penn State Russell E. Larson Agricultural Research Center in Rock Springs and the Southeast Agricultural Research and Extension Center (SEAREC) in Landisville, PA.

Dr. Gugino, Associate Professor of Vegetable Pathology, and Jennie Mazzone, a dual M.S. student in Plant Pathology and International Agriculture and Development (INTAD), led this research to evaluate management strategies for bacterial rots of onion. The vegetable pathology team evaluated nearly 40,000 onions this year from five field trials and four commercial onion farms.

20160722OnionHarvest_grading
Jennie Mazzone (L) and Dr. Beth Gugino (R) | At harvest, onions from these trials are graded based on bulb diameter and evaluated for marketable yield and disease incidence |  Image: Jennie Mazzone, Penn State University

Mazzone’s field trials investigated the susceptibility of onion cultivars to bacterial disease, and how nitrogen fertilization timing and application rate affect bacterial disease incidence and marketable yield.

20160722OnionHarvest_Mazzone
Jennie Mazzone harvesting onions from a grower farm | Image: Jennie Mazzone, Penn State University

Gugino’s field trial and on-farm research with four commercial onion farms was conducted to establish a foliar disease severity rating threshold that could help growers time harvest to maximize yield and minimize losses due to bacterial diseases.

20160722OnionHarvest_Beth
Marlia Bosques Ramírez (L) and Dr. Beth Gugino (R) at a grower farm | Image: Jennie Mazzone, Penn State University

Those from the vegetable pathology team who helped with the onion field trials were:

  • Ph.D. student Laura del Sol Bautista Jalón
  • Summer Research Opportunities Program undergraduate student Marlia Bosques Ramírez
  • Undergraduate student intern Lindsay Boyd
  • Undergraduate student intern Colleen Grove
  • Research Support Technician Timothy Grove
  • Associate Professor Dr. Beth Gugino
  • Lab Research Technician Dr. Michele Mansfield
  • M.S. student Jennie Mazzone
  • Undergraduate student intern Jennifer Petrella
  • Incoming Ph.D. student Christopher Ramage