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Effect of Increased Corn Seeding Rate in Ohio

 

Effect of Increased Corn Seeding Rate in Ohio

Objectives

  • Compare yield performance of Pioneer® brand products at a standard grower-selected seeding rate and a seeding rate 5,000 seeds/acre over the grower-selected rate (Table 1).
  • Generate information to help better manage newer genetic platforms that perform well at higher plant populations.

Study Description

 
Ohio Agronomy Research
 
Locations: 33 in Ohio
Replications:      1 per location
Pioneer® Brand Families:
   P0965, P0970 (northern Ohio)
P0993, P0987 (southern Ohio)
Seeding Rates:      Grower-selected standard rate
5,000 seeds/acre over grower-selected rate
 
Table 1. Average planting rate ranges.
Pioneer®
Brand Family¹
Normal 5,000 Over Difference
  ———— seeds/acre ————
P0965 29,500 34,300 4,800
P0970 32,000 35,400 3,400
P0993 33,200 36,800 3,600
P0987 29,800 34,500 4,700
 

Results

  • In 2013, yield of P0993, P0970 and P0965 families were optimized at grower seeding rates of 30,000 to 33,000 seeds/acre (Figure 1).
  • Yield of P0987 family was significantly greater at seeding rates approaching 35,000 seeds/acre, with a 7.1 bu/acre average yield advantage (Figure 1). This may be attributable to an above average seeding rate response when compared to other tested hybrids.
  • There were no differences in grain moisture or test weight among seeding rates within a hybrid family (data not shown).

Figure 1. Grain yield comparisons of 4 corn hybrid families among normal
and 5,000 over seeding rates at 33 locations in Ohio, 2013.
Chart - Grain yield comparisons of four corn hybrid families.
 
Photo: Field corn.

¹Family identifies hybrid/brand that have the same base genetics. Manage hybrid/brand within the same family similarly.

Pioneer® brand products are provided subject to the terms and conditions of purchase which are part of the labeling and purchase documents. 2013 data are based on average of all comparisons made in 33 locations through December 12, 2013. Multi-year and multi-location is a better predictor of future performance. Do not use these or any other data from a limited number of trials as a significant factor in product selection. Product responses are variable and subject to a variety of environmental, disease, and pest pressures. Individual results may vary.

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