Winter Wheat Fertilizer Methods of Application Options (3 Year Average)

Experiment Info 2011:

Planted:10/13
Variety:Pioneer 25W43
Population:2 million
Row Spacing:7.5″
Previous Crop:Soybeans
Plot Size:15′ x 290′
Replications:4
Topdress:4/13
Harvested:7/15

 

Experiment Info 2012:

Planted:10/11
Variety:Red Devil
Population:2 million
Row Spacing:7.5″
Previous Crop:Navy Beans
Plot Size:15′ x 265′
Replications:4
Topdress:3/29
Harvested:7/12

 

Experiment Info 2013:

Planted:9/24
Variety:Red Devil
Population:1.85 million
Row Spacing:7.5″
Previous Crop:Navy Beans
Plot Size:15′ x 265′
Replications:4
Topdress:4/5
Harvested:7/16

Objective:

Long-term comparison of the methods of application on wheat yield.

Three years of testing at the NCRS has shown consistent results when it comes to method of application options for winter wheat. For comparison: preplant broadcast, drill applied, fall foliar on 2” growth and spring topdress were evaluated. Soils at the NCRS are in the mid to high levels for phosphorus, so limited inputs are required. This combined with the shortened fall growing season before dormancy provides more options for timing. Fertilizer programs and three year averages appear on the chart below.

Winter Wheat Fertilizer Methods of Application Options 3 Year AverageConclusions:

  • For three years in a row, the NCRS has shown there is little difference between placement options on winter wheat.
  • Areas with more fall growing time and requirements of more phosphorus, it may be necessary to have nutrients on sooner to provide best yield results.