Figure 3. Yield response to plant populations in environments yielding between 180-220 bu/acre. n=215 locations of Iowa on-farm research.
Figure 4. Yield response to plant populations in environments yielding between 140-180 bu/acre. n=157 locations of Iowa on-farm research.
Figure 6. Yield of Pioneer® hybrid P0993HR (HX1, LL, RR2) was maximized at 38,000 plants/acre and at 34,000 plants/acre for Pioneer® P1151AM™ brand corn (AM, LL, RR2).
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|AM - Optimum® AcreMax® Insect Protection system with YGCB, HX1, LL, RR2. Contains a single-bag integrated refuge solution for above-ground insects. In EPA-designated cotton growing counties, a 20% separate refuge must be planted with Optimum AcreMax products.|
|AMX - Optimum® AcreMax® Xtra Insect Protection system with YGCB, HXX, LL, RR2. Contains a single-bag integrated refuge solution for above- and below-ground insects. In EPA-designated cotton growing counties, a 20% separate corn borer refuge must be planted with Optimum AcreMax Xtra products.|
|HX1 – Contains the Herculex® I Insect Protection gene which provides protection against European corn borer, southwestern corn borer, black cutworm, fall armyworm, lesser corn stalk borer, southern corn stalk borer, and sugarcane borer; and suppresses corn earworm.
HXRW – The Herculex® RW Insect Protection trait contains proteins that provide enhanced resistance against western corn rootworm, northern corn rootworm, and Mexican corn rootworm.
HXX – Herculex® XTRA contains both the Herculex I and Herculex RW genes.
Herculex® Insect Protection technology by Dow AgroSciences and Pioneer Hi-Bred. Herculex® and the HX logo are registered trademarks of Dow AgroSciences LLC.
|LL - Contains the LibertyLink® gene for resistance to Liberty® herbicide.
Liberty®, LibertyLink® and the Water Droplet Design are trademarks of Bayer.
|YGCB – The YieldGard® Corn Borer gene offers a high level of resistance to European corn borer, southwestern corn borer and southern cornstalk borer; moderate resistance to corn earworm and common stalk borer; and above average resistance to fall armyworm.
YieldGard®, the YieldGard Corn Borer design and Roundup Ready® are registered trademarks used under license from Monsanto Company.
|RR2 - Contains the Roundup Ready® Corn 2 trait that provides safety for over-the-top applications of labeled glyphosate herbicides when applied to label directions.
Roundup Ready® is a registered trademark used under license from Monsanto Company.