Scientific names: Erigeron canadensis or Conyza canadensis Horseweed, also known as marestail, fleabane, or colt’s tail, is a common and troublesome weed throughout North America due to its high seed production, wind dissemination, lack of seed dormancy, and adaptability to dry and moist soil. Moreover, horseweed populations have shown to be resistant to Group 2…Read more about Horseweed[Read More]
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About half of the watermelon fields in our area are not equipped with supplemental irrigation. Watermelon production in these fields is therefore dependent exclusively on rainfall. In fields where supplemental irrigation is available, drip irrigation under black plastic mulch is the most commonly used system. Overhead irrigation through central pivot is also used in some…Read more about Considerations for Irrigation Management in Watermelon Production[Read More]
The past 30 days have been met with warmer than normal temperatures in the northern counties and drier than normal conditions throughout most of the state (Figures 1 and 2). This warm and dry environment is conducive to developing drought – particularly with the increased evapotranspiration rates. While climate outlooks are calling for increased confidence…Read more about Reference Evapotranspiration Forecasts across Indiana[Read More]
On a sandy hillside in a watermelon field, we noted vines that, from a distance, appeared undersized compared to the vines in the flats. Upon closer inspection, some of the vines had either wilted or a portion of the plant had wilted. The wilted vines had discolored vascular tissue. These vines were affected by Fusarium…Read more about Root-knot Nematode of Watermelon[Read More]
What is causing the spots on the watermelon leaf? A) anthracnose B) early blight C) a contact herbicide The answer is that the leaf above has been affected by a contact herbicide. The herbicide caused lesions upon contacting the leaf. However, there was no growth of the lesion and no yellowing of the leaf…Read more about Answer to Question from Last Issue (6-18-2020)[Read More]
The roller coaster ride of Indiana weather continues. Things were drying out across the state with signs of browning lawns, rolling vegetation leaves, and lowering pond and stream levels. Then the rains came. Most of the state received between 2 and 3 inches of precipitation from June 20 through 29th – with wetter areas to…Read more about Outlooks Showing Confidence for Below-normal Precipitation[Read More]
Scientific name: Chenopodium album Common lambsquarters is originally from Eurasia. It is an aggressive weed, adapted to grow vigorously in many different climates and soils, and has been able to establish worldwide. In North America it was once grown as a vegetable crop. In Asia and Africa, it is still cultivated to use as a…Read more about Common Lambsquarters[Read More]
If they have not already, your early season residual herbicides will soon run out of steam. Depending on the crop and production system, you may soon lose the ability to cultivate row middles. Now what? For many vegetable crops, managing emerged weeds is difficult with few postemergence herbicide options. This article will focus on cucurbit…Read more about Considerations for Mid-Season Weed Control in Cucurbits[Read More]
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