I have observed this disease in several pumpkin fields this year. It is not clear to me why this disease seems to be more widespread compared to recent seasons. However, it makes sense to review Plectosporium blight here. Plectosporium blight is usually not a serious disease. The occurrence of this disease is usually sporadic. However, when[Read More…]
The relatively cool weather Indiana has experienced this summer may be responsible for more observations of northern corn leaf blight (NCLB) on sweet corn than normal. The primary symptom is the cigar shaped lesion that ranges from 1 to 7 inches in length (see Figure 1). The lesions may range from tan to gray in color.[Read More…]
When used as a verb, to rogue means to get rid of items that don’t conform to a certain standard. In plant pathology, the word rogue is used to describe a technique whereby diseased plants are removed or rogued to slow the spread of disease. I’d like to describe the practice as it might be used[Read More…]
Downy mildew has been confirmed on jack-o-lantern pumpkins in Daviess and Jasper Counties and on acorn squash in LaPorte County. These are the first confirmed reports of this disease on Cucurbita pepo in Indiana in the 2015 season. There are unconfirmed (but reliable) reports of downy mildew on pumpkins in Parke, Washington, and White Counties. This disease has[Read More…]
This disease has been observed in northern Indiana on basil sold as a fresh herb. The fungus that causes downy mildew of basil does not overwinter in Indiana, but must blow in from the south. The fungus that causes downy mildew of basil is not the same fungus that causes downy mildew of cucurbits or[Read More…]
Late blight has been reported on processing tomatoes in Cass County Indiana. This is a late blight update from when this disease was reported on potatoes and tomatoes in LaGrange County Indiana. The latter outbreak and some disease management tips are reported in the Vegetable Crops Hotline Issue 603 at ag.purdue.edu/hla/Extension/VegCropsHotline/Pages/Latest-Articles.aspx?article=117 This article was originally[Read More…]
You might remember seeing cation exchange capacity in soil test reports. Recently, I have been asked about what it means. This is one of the important soil characteristics that we need to understand. Firstly, we need to know what cations are. Cations are positively charged ions. There are several. The ones very important for plant[Read More…]
The Indiana State Department of Agriculture’s (ISDA) Indiana Grown Program is an all-inclusive collaborative initiative to promote Indiana produced agricultural products to Indiana residents, restaurants, grocery stores, farmer’s markets, wholesalers, processors and other retail businesses. In addition, through the Indiana Grown program, the ISDA is establishing a marketing strategy to promote Indiana agriculture nationally as well[Read More…]
Beginning Farmer Tours. Free farm tours and networking events sponsored by Purdue Extension and Local Growers Guild. For more information and to register contact the Purdue Extension Education Store at www.edustore.purdue.edu or 888-EXT-INFO. September 8: Growing Places Indy, Indianapolis, IN. Lunch, networking session, tour. Urban produce farm with raised beds, u-pick, and greenhouses. September 14:[Read More…]
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