Updated: May 16, 2023
Beech Leaf Disease
A novel non-native microbe is locally impacting beech tree health and mortality throughout the northeastern United States and southern Canada. The microbe, Litylenchus crenatae mccannii, a subspecies of a nematode found in Japan, is causing beech leaf disease (BLD).
Updated: May 9, 2023
Managing Fusarium Head Blight in Small Grains: Symptoms, Favorable Environments, and Disease Management Strategies
Fusarium head blight (FHB) is a severe fungal disease that affects small grains, wheat and barley. It is particularly problematic in regions with wet and warm springs, such as the Mid-Atlantic region. FHB is caused by several species of Fusarium, F. graminearum being the most common in the USA.
Updated: April 12, 2023
Managing Apple Growing Conditions to Prevent Fruit Cracking
Fruit cracking is a phenomenon that strongly limits fruit quality and yields, decreasing fruit marketability and grower profitability. Fruit cracking starts with microcracks in the skin. The skin acts as a protective layer covering the flesh, and consists of a cuticle made of cutin and wax.
Updated: October 12, 2022
From the Orchard to Cold Storage: A Closer Look at the Development of Nine Physiological Disorders in Apples (FS-2022-0640)
Physiological disorders are abnormalities within the different apple fruit tissues that lead to a loss of quality, marketability, and profitability, and therefore an increase in fruit loss and waste. Physiological disorders are not caused by pathogens or mechanical damage but can be a result of several factors, such as: genotype/genetic background (cultivar/strain), maturity at harvest time, orchard/preharvest factors, seasonal variations, and postharvest storage conditions. Different cultivars are more prone to developing certain disorders than others, e.g., Honeycrisp fruits are highly prone to bitter pit development. In the case of maturity at harvest, it is known that fruit that is harvested too early are more prone to developing bitter pit, while fruits that are harvested too late (overripe) are prone to developing chilling injury. Besides, late-ripening cultivars are more susceptible to disorders such as watercore. Preharvest factors such as tree fruit mineral nutrition, rootstock selection, or crop load, have all been shown to play a key role in the development of physiological disorders, as bitter pit has been shown to be exacerbated in Honeycrisp fruit with low calcium levels and larger sizes. Additionally, environmental variations such as high temperatures, increased precipitation or excessive sunlight exposure can all trigger physiological disorder development. Finally, postharvest storage conditions, e.g., humidity levels, temperature, gas concentrations, which are key in maintaining fruit quality during storage, can also increase susceptibility to physiological disorders. In this fact sheet we will take a closer look at nine physiological disorders that can develop in apples during postharvest storage, but can be triggered by the different factors described above. We will briefly discuss their symptoms, why and when do they develop, and how can they be prevented. Authors: Carlos Corte, Candidate for B.S. in Biochemistry, and Macarena Farcuh, Ph.D., Assistant Professor and Extension Specialist; Title: From the Orchard to Cold Storage: A Closer Look at the Development of Nine Physiological Disorders in Apples (FS-2022-0640)
Updated: October 7, 2022
Agronomy News-October 2022
Agronomy News-October 2022, Volume 13, Issue 7. Topics in this issue are Survey of the Most Common and Troublesome Weeds, Farm Emergency Action Plan, Preparing for 2023: Small Grains Disease Management, Maryland Accepting Proposals for 2023 Animal Waste Technology Fund, Scouting For Ear and Stalk Rots in Corn, Keep An Eye On Nitrogen Fertilizer Prices, Grain Market Report, Weather Outlook, and Regional Crop Reports.
Updated: October 7, 2022
Scouting For Ear and Stalk Rots in Corn
With corn harvest underway across the state, growers may be encountering ear rots and stalk rots in affected fields. The degree of severity is dependent on a variety of factors, so it is wise to scout fields prior to harvesting in order to identify problematic fields and give those harvest priority.
Updated: September 26, 2022
Look Out for Tar Spot on Corn
As you’re scouting fields this summer, keep this fungal disease in the back of your mind. Tar spot is a fungal disease of corn caused by Phyllachora maydis. It was first discovered in the United States in 2015. In Latin America where tar spot is more common, another fungal species, Monographella maydis, is known to occur in complex with P. maydis; however, only P. maydis has been found in the United States.