Tag Archive: Leaf

Algal Leaf Spot Common on Magnolias and Camellias

Algal leaf spot, also known as green scurf, is commonly found on thick-leaved, evergreen trees and shrubs such as magnolias and camellias.  It is in the genus Cephaleuros and happens to be one of the only plant parasitic algae found in the United States.  Although commonly found on magnolias and camellias, algal leaf spot has a …

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Permanent link to this article: http://jackson.ifas.ufl.edu/newsletters/2017/06/29/algal-leaf-spot-common-on-magnolias-and-camellias/

Cool, Wet Spring Favors Azalea and Camellia Leaf Gall

Do you have azaleas or camellias with leaves that are thickened, curled and waxy in appearance? This is fairly common this year and is caused by a fungus. Camellia leaf gall on Sasanqua Camellia. Note swollen, malformed leaves. Photo credit: Larry Williams Exobasidium vaccinii is a fungus that causes leaves, and in some cases flower …

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Permanent link to this article: http://jackson.ifas.ufl.edu/newsletters/2016/05/12/cool-wet-spring-favors-azalea-and-camellia-leaf-gall/

NISAW 2016 – Air Potato Leaf Beetle, a Biological Control for Air Potato

Air potato vine. Photo by Scott Jackson Air potato (Dioscores bulbifera) is a perennial, herbaceous self-twining vine that can grow over 60 feet in length, enabling it to climb over and smother many native plants. The Florida Exotic Plant Pest Council (FLEPPC) lists air potato as a Category 1 invasive plant, which means that it …

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Permanent link to this article: http://jackson.ifas.ufl.edu/newsletters/2016/02/26/nisaw-2016-air-potato-leaf-beetle-a-biological-control-for-air-potato/

Update on 2014 peanut leaf spot fungicide trials in Citra, FL.

Figure 1. An aerial image of 2014 peanut leaf spot fungicide trial from the University of Florida Plant Science Research and Education Unit in Citra, FL on 9/25/14. The management of early and late leaf spot in peanuts is an essential task for growers each year. Currently, there are a number of fungicide products available …

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Permanent link to this article: http://jackson.ifas.ufl.edu/newsletters/2015/03/28/update-on-2014-peanut-leaf-spot-fungicide-trials-in-citra-fl/

Leaf Litter: Do the Benefits Outweigh the Work?

Fallen leaves add much to the landscape. They feed the plants and many insect, retain water, and help stabilize the soil For the homeowner who feels the need to rake leaves and pine needles, the task can be something of a minor nuisance. The showers of earth-toned leftovers appear suddenly and at inconvenient times, and …

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Permanent link to this article: http://jackson.ifas.ufl.edu/newsletters/2015/01/23/leaf-litter-do-the-benefits-outweigh-the-work/

Watermelon Novel Bacterial Leaf Spot Research Update

Fig. 1. Symptoms of the Pseudomonas syringae leaf spot on watermelon Pseudomonas Syringae Leaf Spot on Watermelon Mathews Paret, Eric Newberry, Nick Dufault, Josh Freeman, Bob Hochmuth, Anthony Drew, David Langston and Jeff Jones Florida and Georgia are the two largest producers of watermelon in the United States with 48,000 acres under production and a …

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Permanent link to this article: http://jackson.ifas.ufl.edu/newsletters/2014/06/27/watermelon-novel-bacterial-leaf-spot-research-update/

New Leaf Market sponsors Local Farm Tour – Oct 19 & 20

New Leaf Market 6th Annual Farm Tour New Leaf Market in Tallahassee has hosted a local farm tour for the past 6 years. The 2013 Farm Tour will be October 19 & 20. This much anticipated event has grown to become a Fall tradition and will feature over 41 sites. All tours are free to the …

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Permanent link to this article: http://jackson.ifas.ufl.edu/newsletters/2013/10/12/new-leaf-market-sponsors-local-farm-tour-oct-19-20/

Leaf Spot Appears in Panhandle Peanuts

Fungal Leaf Spot is threatening peanut yields in Panhandle Florida. Currently the disease is developing in the lower canopy. As the leaf spot progresses the lower leaves will begin to fall off, and the disease will quickly progress into the upper canopy. Evidence of the exceptionally wet weather in July and August is beginning to …

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Permanent link to this article: http://jackson.ifas.ufl.edu/newsletters/2013/09/27/leaf-spot-appears-in-panhandle-peanuts/

Corn Leaf: Thrip Damage, Not a Disease

Thrip Damage:A Closer Look Thrips are most noticeable, and of greatest concern on corn at two periods during the growing season: on young seedling plants, and at ear formation. On seedling plants their feeding makes the plants look stunted. At ear formation, thrip injury to developing kernels provides entry for infection by Fusarium spp. and …

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Permanent link to this article: http://jackson.ifas.ufl.edu/newsletters/2013/06/28/corn-leaf-thrip-damage-not-a-disease/

Disease Alert: Northern Corn Leaf Blight

  Northern Corn Leaf Blight lesion. Credit: Jack Price Rome Ethridge, extension agent in Seminole County Georgia, this week reported incidence of Northern Corn Leaf Blight (NCLB), as did Jake Price in Lowndes County Georgia. This is a fungal disease that can reduce corn yields and is most likley to be found in fields where corn was grown …

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Permanent link to this article: http://jackson.ifas.ufl.edu/newsletters/2013/05/10/disease-alert-northern-corn-leaf-blight/

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