Articles from 2018

71 articles found.

This was a very short year for strawberries due to the record warmth in May. By now, most harvest is over. As soon as harvest is done, it’s time to begin the renovation process. Matted row strawberry plantings must be renovated each year to establish new crowns for the following year’s crop. For best results, renovation should be started immediately after the harvest is completed to promote early runner formation. This is especially important in the northern part of the state with its shorter growing season. The earlier a runner gets set, the higher its yield potential. Growers should begin renovation as soon as the last marketable berries are harvested. Delaying renovation is one of the most common mistakes growers make. Renovation should be completed by the end of July in normal years. The following steps describe renovation of commercial strawberry fields. Weed control: Post emergent application: Annual broadleaf weeds[Read More…]


Now that we are past fruit set, it is easy to tell what level of crop we are carrying. With the fairly extensive winter injury this year, many varieties will have a light crop borne on secondary or tertiary shoots. Little if any crop control will be needed in those. However, many of the plantings I’ve seen have a very good crop and some crop control will be necessary to balance the vines. A crop load ratio (yield to pruning weight) of 8 to 12 is a good rule of thumb for vine balance. This means we need to leave only enough clusters to produce 8 to 12 lb of fruit on low to medium vigor vines with 1 lb of prunings. For large clustered varieties such as Vidal and Chambourcin, clusters can weight 0.40 lb. So 10 clusters will contribute 4 lb of yield and we would need 25[Read More…]


Figure 1. The branch stub serves as a wound that enables a pathogen, in this case, Nectria spp., to infect. Photo by Janna Beckerman.

Diseases that affect the twigs, branches, and the main trunk of a tree are referred to as cankers or blights. Canker diseases  can be a serious problem in the orchard, vineyard, berry or bramble patch when they are not properly managed, and even when they are. All woody plants can be infected by canker pathogens. Cankers appear as a general sunken area of darkened tissue on the twigs or branches, often surrounding a branch stub(Fig. 1). Many canker pathogens produce perithecia, which contain sacs of spores (asci) that forcibly release the spores when the conditions are right. The perithecia are easy to find on the surface of the canker (Figure 2). As the canker grows, the twig or branch may become girdled, causing the wilting and death of the leaves past the point of infection on the tree. On stone fruit, this can cause gummosis, too (Fig. 3). What causes[Read More…]


  Following the success of last year’s Summer Field Tour at Tuttle Orchards, this year we are again planning a combined summer field tour with the Indiana Horticultural Society, the Indiana Vegetable Growers’ Association and the Indiana Farm Market Association. We will be hosted by Garwood Orchards in La Porte, IN. While we encourage membership in these industry organizations, all those who are interested are welcome and invited to attend, regardless of membership status. Garwood Orchards is one of the largest and best managed orchards in the state. It may seem puzzling that they can manage such a large operation and manage it so well. That’s why we’re visiting – to not only be inspired but learn a few of their tricks and see how they do it. They have aggressively planted new cultivars and crops and have been on the forefront of adopting new technologies. They are major producers[Read More…]


Grapes across the state are post bloom a week or more. As berries reach 3 to 5 weeks post bloom they become naturally resistant to infection by black rot and powdery mildew fungi. So our spray program can relax a bit. Growers normally extend to a 14 to 21 day schedule supported by regular scouting. At that time we can begin to focus on leaf diseases such as downy and powdery mildew. Downy is likely to be a big problem this year because it favors hot, humid conditions, exactly what we’ve been experiencing. There are a number of excellent fungicides specifically for downy mildew as well as older products such as Captan and phosphorous acid products. Scout your most susceptible varieties twice a week and make an application as soon as any downy mildew lesions are noted. Another concern is insect pests. Japanese beetles have emerged and adults are present[Read More…]


June 26, 2018 Summer Field Tour- Fruits & Vegetables Garwood Orchard, LaPorte, IN Contact Lori Jolly-Brown ljollybr@ purdue.edu July 17-18, 2018 Indiana Winery and Vineyard Association Summer Meeting  Brown County Inn, Nashville, IN Contact https://indianawinevine.org/events to register August 30, 2018 Small Farm Education Field Day  Purdue Daniel Turf Center Contact Lori Jolly-Brown, ljollybr@purdue.edu or 765-494-1296 Register here: http://www.cvent.com/d/hgqx6g September 5, 2018 Greenhouse & Indoor Hydroponics Workshop Purdue University, PFEN 1159 & Purdue Horticulture Greenhouse Contact Lori Jolly-Brown ljollybr@purdue.edu Register here: https://tinyurl.com/yaxd4k2z October 17, 2018 Indiana Flower Growers Conference Daniel Turf Center Contact Lori Jolly-Brown ljollybr@purdue.edu January 8, 2019 Illiana Vegetable Growers Symposium Teibel’s Family Restaurant, Schererville, IN Contact Liz Maynard emaynard@purdue.edu https://ag.purdue.edu/hla/Extension/Pages/IVGS.aspx February 12-14, 2019 Indiana Hort Congress Indianapolis Marriott East Indianapolis, IN Contact Lori Jolly-Brown, ljollybr@purdue.edu or 765-494-1296 http://www.inhortcongress.org  


The warm weather is pushing crop develop rapidly. Grapes are at bunch closure, summer red and black raspberry harvest has begun. Some primocane fruiting types are beginning to flower. Gooseberry and currant harvest has begun. Apples are 1-2 inches in diameter. Strawberry harvest is over and renovation has begun. The chemical thinning window has closed and hand thinning is underway. Growers should hand thin the most biennial cultivars first. Japanese beetles are plentiful!