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Wheat School: How planting date impacts winter wheat physiology and performance

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Growers who plant winter wheat early can count on greater yields, however rising circumstances and the atmosphere can affect plant physiology and the way the rising crop needs to be managed.

On this episode of the RealAgriculture Wheat College, we’re joined by College of Guelph graduate scholar Emma Dieleman who shares what she’s studying from her wheat planting date analysis. Within the video, Dieleman and host Bernard Tobin begin the dialog with a have a look at her findings on soybean desiccation and the affect on wheat planting date.

Dieleman’s analysis focuses on three completely different soybean desiccant merchandise and three software timings. Desiccants sprayed on the earliest software timing (R 6.5) delivered a 5 to 10 day accelerated soybean drydown. That’s a big benefit for growers who need to plant wheat as early as attainable following soybean harvest, she notes.

With regards to planting date, Dieleman’s analysis signifies that planting early does ship a yield benefit. After two years of trials evaluating 4 completely different planting dates starting from Sept. 18 to Nov. 15, the information signifies that the earliest planting dates persistently delivers greater yields, she says. As planting dates push later into October and November, yield reductions can vary from 10 to 50 bu/ac. (Story continues after the video.)

Dieleman has additionally famous important plant physiological variations based mostly on planting date: earlier-planted wheat grows taller, produces extra biomass and produces extra grain heads per metre. She says one of many key takeaways from her work is the necessity for growers to pay shut consideration to environmental circumstances and the way the crop is rising and growing.

In her analysis, Dieleman additionally in contrast how the wheat crop responds to each normal and intensive administration practices. In these trials, the intensive administration included a better nitrogen fee, a second fungicide software, and a plant progress regulator.

In 2021, Dieleman notes that the Ontario crop skilled a big quantity of lodging. In her plots, she noticed that yield responses to the usual and intensive administration packages have been inconsistent. Nevertheless, lodging was diminished in plots that have been intensively managed.

Based mostly on her analysis, in terms of winter wheat, she says administration choices really want to include discipline location/area, rising circumstances for that yr and planting date.

Click on right here for extra Wheat College episodes.

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