plant pathology

With support from the U.S. Department of Agriculture’s National Institute of Food and Agriculture (NIFA), the National Plant Diagnostic Network has grown into an internationally respected consortium of plant diagnostic laboratories dedicated to enhancing agricultural security by protecting health and productivity of plants in agricultural and natural ecosystems.

Dr. Ray Hammerschmidt, President of the National Plant Diagnostic Network, discusses this partnership and the benefits all Americans receive in the following guest post:

Superheroes really do work among us. But, instead of capes and cowls and ice palaces and caves, they are often found in a lab at a public university or state agriculture department, wearing lab coats and working over a microscope.

These men and women work daily to protect our communities and crops from dangerous pests and pathogens.  They are plant pathologists, entomologists, nematologists, weed scientists, and other plant scientists who work diligently to mitigate the impact of endemic, emerging, and exotic pathogens and pests that attack agricultural, forest, and landscape plants in the United States.

This post is part of the Science Tuesday feature series on the USDA blog. Check back each week as we showcase stories and news from USDA’s rich science and research portfolio.

As a plant pathologist with USDA’s Agricultural Research Service (ARS) Rice Research Unit in Beaumont, Texas, Toni Marchetti oversaw a new program in 1972 to develop new cultivars that better resisted costly diseases like rice blast.  

Marchetti retired from ARS in 2001, leaving behind not only a legacy of excellence in rice breeding and plant pathology, but also a prized collection of 1,000 rice blast specimens he isolated from Texas, Arkansas, and other rice-growing states. The Beaumont unit was closed in 2012, and the collection was relocated to ARS’s Dale Bumpers National Rice Research Center in Stuttgart, Arkansas.

Written by Kayla Harless, People’s Garden Intern

Almost everyone who gardens grows tomato plants. We are passionate about our tomatoes and savor that ripe, fresh fruit. However, several diseases love our tomato plants just as much as we do. The People’s Garden Workshop topic this week was tomato blights and spots, and Dr. Martin Draper, a plant pathologist through the USDA National Institute of Food and Agriculture, taught us how to identify them and what we can do to treat and prevent them.