Soluble nitrogen fertilizers for spotted-wing Drosophila management on fruit and fruit waste

Project Type: Research and Education
Funds awarded in 2020: $208,507.00
Projected End Date: 11/30/2023
Grant Recipient: Michigan State University
Region: North Central
State: Michigan
Project Coordinator:
Dr. Marianna Szucs
Michigan State University
Dr. Matthew Grieshop
Call Poly San Luis Obispo
Poster Presented at 2022 Entomological Society of America Meeting on outcomes of laboratory study for this project. We demonstrated that incorporating Magnesium nitrate and Calcium nitrate into fruit wastes eliminated spotted-wing drosophila reproduction. Applications of Urea, however, did not. Applications of fertilizers to fresh fruit (blueberries used as a model) did not reduce SWD reproduction. Thus, growers could consider adding Magnesium nitrate or Calcium nitrate to waste fruit to reduce background populations of this pest. Magnesium Nitrate and Calcium nitrate were active at concentrations as low as 0.13lb/100 gallons and 0.19lbs to 100 gallons, respectively (units scaled up from 0.01 gallon experimental volumes).
Conference/Presentation Material
Charlotte Schuttler, Michigan State University
Nikki Rothwell, Michigan State University
Hannah Burrack, Michigan State University
Matthew Grieshop, Cal Poly San Luis Obispo
Target audiences:
Educators; Researchers
Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture or SARE.