Department of Plant Science

Offering Penn State degrees in agroecology, golf course turfgrass management, horticulture, landscape contracting, and turfgrass science.

Plant Science News

Cereal rye shown here is being mechanically terminated with a roller-crimper in an organic no-till soybean system. Researchers compared tillage-based soybean production with reduced-tillage soybean production.
Organic soybean producers can be competitive using little or no tillage
April 1, 2020
UNIVERSITY PARK, Pa. — Organic soybean producers using no-till and reduced-tillage production methods that incorporate cover crops — strategies that protect soil health and water quality — can achieve similar yields at competitive costs compared to tillage-based production. That’s the conclusion of a new study by researchers in Penn State’s College of Agricultural Sciences. These findings are significant, according to lead researcher John Wallace, assistant professor of weed science, because they may contribute to increased sustainable domestic production of organic soybeans.
Inside the movable high tunnel structure showing the experimental plot at Penn State’s Russell E. Larson Agricultural Research Center. The research is aimed at maintaining good soil health long term in high tunnels
Technique used to suppress soil pathogens, pests in high tunnels can work in Pa.
March 11, 2020
UNIVERSITY PARK, Pa. — A biological technique used to suppress soilborne pests and pathogens already used in warmer climates, with some modifications, will work in Pennsylvania and other more northern locations, according to a team of researchers. That’s good news for the growing number of vegetable and small-fruit growers using high tunnel cultivation structures who face difficulties maintaining good soil health long term, said team member Francesco Di Gioia, assistant professor of vegetable crop science, Penn State College of Agricultural Sciences.
The researchers measured the susceptibility of 60 genetically diverse genotypes of cacao to Phytophthora palmivora — a major cacao pathogen with global importance — by first collecting leaf samples from cacao trees at the International Cocoa Collection
Novel way to ID disease-resistance genes in chocolate-producing trees found
December 6, 2019
UNIVERSITY PARK, Pa. — Chocolate-producing cacao trees that are resistant to a major pathogen were identified by an international team of plant geneticists. The findings point the way for plant breeders to develop trees that are tolerant of the disease. The method researchers used to rapidly identify resistance genes could be used for any trait that has a genetic link in any plant, according to the team’s leader, Mark Guiltinan, professor of plant molecular biology, Penn State College of Agricultural Sciences. He contends that the strategy represents a major step forward in the quest to develop disease resistance in long generational plants such as trees.
Fourteen Penn State faculty recognized with lifetime honor
December 5, 2019
UNIVERSITY PARK, Pa. — Fourteen Penn State faculty members in areas ranging from physics and engineering to entomology and plant science have been named fellows of the American Association for the Advancement of Science (AAAS), the world’s largest general scientific society. A lifetime honor bestowed upon members by their peers, a total of 443 individuals are being recognized for their extraordinary achievements in advancing science. “At Penn State we believe in the power of brilliant minds creating new possibilities through exploration, collaboration and innovation,” said Nick Jones, executive vice president and provost. “I commend our 14 scholars receiving this high honor and thank them for their continued dedication to the University’s research enterprise.”