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Soybean School: How clay soils impact planting depth

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Soil situations and moisture ranges are key elements to contemplate when setting excellent soybean planting depth, however growers also needs to take into consideration soil sort and clay content material.

On this episode of the RealAgriculture Soybean College, we go to with Ontario Ministry of Agriculture, Meals and Rural Affairs soybean specialist Horst Bohner on the Elgin Soil & Crop Enchancment Affiliation analysis web site close to St. Thomas, Ont. At this location, excessive clay ranges present a wonderful alternative to check the impression heavier soil can have on soybean emergence and plant institution.

In soils with greater clay content material, Bohner says growers need to be extra conscious of planting too deep as a result of crusting could be a difficulty when the soil dries out after heavier rains. Deeper planting is extra palatable in loamier soils as a result of the seed’s hypocotyl can push longer and emerge stronger when the soil isn’t as tight.

On the Elgin analysis web site, Bohner planted 167,000 seeds per acre in 15-inch rows at depths starting from floor broadcast to three inches deep. On the 1.5 inch depth, 146,000 vegetation established to guide the trial. As that is Bohner’s customary suggestion, he was not shocked beans at this depth supplied the perfect efficiency.

Growers usually look to plant deeper within the spring when soil moisture is decrease within the soil profile. On this trial, Bohner discovered that soys planted at 2 inches nonetheless produced an enough plant stand (115,000 vegetation) and even at 2.5 inches an appropriate stand was achieved (100,000 vegetation).

“At two inches you begin to lose some vegetation and a couple of.5 could be absolutely the most depth,” says Bohner.

Click on right here for extra Soybean College movies.

 

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