Corn

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Hybrid/Brand 1
Technology
Heat Units
CRM
Silk CRM
Phys. CRM
P7005AM AM,LL,RR2 2000 70 74 77
P7332R RR2 2000 73 77 81
P7202AM AM,LL,RR2 2050 72 69 76
P7410HR HX1,LL,RR2 2100 74 77 77
P7227R RR2 2125 72 78 77
P7527AM AM,LL,RR2 2150 75 78 77
P7632AM AM,LL,RR2 2225 76 77 81
P7958AM AM,LL,RR2 2300 79 84 83
P8034R RR2 2325 80 82 83
P8234AM AM,LL,RR2 2400 82 84 85
P8210 2425 82 80 81
P8542AM AM,LL,RR2 2550 85 86 87
P8542AMX AMX,LL,RR2 2550 85 86 87
P8700AM AM,LL,RR2 2600 87 85 87
P9188 2600 91 89 91
P9188AM AM,LL,RR2 2650 91 89 91
P9224AM AM,LL,RR2 2675 92 91 90
38N85 RR2 2700 92 89 94
38N94AM AM,LL,RR2 2700 92 89 94
P9188AMX AMX,LL,RR2 2700 91 89 91
P9330AM AM,LL,RR2 2750 93 95 94
P9404AM AM,LL,RR2 2800 94 94 97
P9411HR HX1,LL,RR2 2800 94 93 93
P9608 2800 96 95 96
P9526AMXT AMXT,LL,RR2 2825 95 91 94
P9608AM AM,LL,RR2 2850 96 95 96
P9608AMXT AMXT,LL,RR2 2850 96 95 96
P9621AMXT AMXT,LL,RR2 2850 96 99 98
P9644AM AM,LL,RR2 2875 96 97 97
P9840AMXT AMXT,LL,RR2 2900 98 97 100
P9644AMX AMX,LL,RR2 2925 96 97 97
P9840AM AM,LL,RR2 2925 98 97 100
P9807AM AM,LL,RR2 2950 98 103 100
P9917AMX AMX,LL,RR2 2950 99 96 98
P9998AM AM,LL,RR2 2950 99 99 98
P0157 3000 101 102 102
P0157AM AM,LL,RR2 3000 101 102 102
P9998AMXT AMXT,LL,RR2 3000 99 99 98
P0157AMXT AMXT,LL,RR2 3050 101 102 102
P0216AM AM,LL,RR2 3100 102 107 108
P0306AM AM,LL,RR2 3100 103 101 104
P0496AMX AMX,LL,RR2 3100 104 104 106
P0506 3100 105 105 105
P0414AM AM,LL,RR2 3125 104 104 107
P0574AMXT AMXT,LL,RR2 3125 105 104 108
P0506AM AM,LL,RR2 3150 105 105 105
P0574AM AM,LL,RR2 3150 105 104 108
P0825AM AM,LL,RR2 3250 108 111 111
P0825AMXT AMXT,LL,RR2 3300 108 111 111
P1197AMXT AMXT,LL,RR2 3400 111 113 113

IMPORTANT

Trait rating scores provide key information useful in selection and management of Pioneer® brand hybrids in your area. Information and ratings are based on comparisons with other Pioneer brand hybrids, not competitive hybrids. Information and scores are assigned by Pioneer Research Managers. Scores are based on period-of-years testing through 2014 harvest and were the latest available at time of printing. Some scores may change after 2015 harvest. Scores represent an average of performance data across areas of adaptation, multiple growing conditions, and a wide range of both climate and soil types, and may not predict future results. All products within a hybrid family receive the same score unless observations indicate a significant difference. Individual product responses are variable and subject to a variety of environmental, disease and pest pressures. Please use this information as only one component of your product positioning decision. Refer to www.pioneer.com or contact a Pioneer sales professional for the latest and most complete listing of traits and scores for each Pioneer brand product.

RATINGS

9 = Outstanding; 1 = Poor; Blank = Insufficient Data.

TECHNOLOGY SEGMENT

AM — Optimum® AcreMax® Insect Protection system with YGCB, HX1, LL, RR2. Contains a single-bag integrated refuge solution for above-ground insects.

AMXT (Optimum® AcreMax® XTreme) — Contains a single-bag integrated refuge solution for above- and below-ground insects. The major component contains the Agrisure® RW trait, the YieldGard® Corn Borer gene, and the Herculex® XTRA genes.

AMX (Optimum® AcreMax® Xtra) — Contains a single-bag integrated refuge solution for above- and below-ground insects. The major component contains the YieldGard® Corn Borer gene and the Herculex® XTRA genes for resistance to corn borer and corn rootworm.

HX1 — The Herculex® I insect protection trait offers a high level of resistance to European corn borer; very good resistance to black cutworm and western bean cutworm; and moderate resistance to corn earworm.

HXX — Herculex® XTRA contains the Herculex I and Herculex RW genes for resistance to the same pests as Herculex I as well as protection against larvae of western corn rootworm and northern corn rootworm.

LL — Contains the LibertyLink® gene for resistance to Liberty® herbicide.

RR2 — Contains the Roundup Ready® Corn 2 trait that provides crop safety for over-the-top applications of labelled glyphosate herbicides when applied according to label directions.

YGCB — The YieldGard® Corn Borer gene offers a high level of resistance to European corn borer; and moderate resistance to corn earworm.  

Herculex® insect protection technology by Dow AgroSciences and Pioneer Hi-Bred.®, ™ Herculex and the HX logo are trademarks of Dow AgroSciences LLC.  Liberty®, LibertyLink® and the Water Droplet Design are trademarks of Bayer. Roundup Ready®, YieldGard® and the YieldGard Corn Borer design are registered trademarks used under license from Monsanto Company. Agrisure® technology incorporated into these seeds is commercialized under a license from Syngenta Crop Protection AG

CRM (Comparative Relative Maturity):

There is not an industry standard for maturity ratings so comparing hybrid maturity and harvest moisture ratings between companies is usually difficult. Use the CRM rating to compare Pioneer hybrids with competitive hybrids of a similar maturity and harvest moisture. CRM ratings, and harvest moistures, for hybrids within a family may vary slightly, depending upon the level of insect (ECB and CRW) infestation. Conventional and straight hybrids with the RR2 gene within a family will usually be 1-2 CRMs earlier than indicated, when insect infestations are moderate to heavy. One CRM difference is about ½ point of moisture difference at harvest.

PHYSIOLOGICAL CRM:

Measures differences in maturity to zero milkline stage. To help decide if a new hybrid fits your area’s growing season, compare its physiological CRM to a hybrid that you plant or one that is successfully used in your area.

GRAIN DRYDOWN:

Compares hybrids of similar maturity for rate of moisture loss during grain drydown. A higher score indicates faster drydown. A lower score indicates slower drydown, or a wider opportunity for silage and high-moisture corn harvest.

STRESS EMERGENCE:

All hybrids are expected to establish normal stands under average soil conditions. Stress emergence is a measure of the genetic ability or potential to emerge in the stressful environmental conditions of cold, wet soils or short periods of severe low temperatures, relative to other Pioneer hybrids. Ratings of 7-9 indicate very good potential to establish normal stands under such conditions; a rating of 5-6 indicates average potential to establish normal stands under moderate stress conditions; and ratings of 1-4 indicate the hybrid has below average potential to establish normal stands under stress and should not be used if severe cold conditions are expected immediately after planting. Stress emergence is not a rating for seedling disease susceptibility, early growth or speed of emergence.

DROUGHT TOLERANCE:

Drought tolerance is a complex trait, determined by a platform's ability to maintain yield in limited-moisture environments. A higher score indicates the potential for higher yields vs. other platforms of similar maturity in limited-moisture environments.

HIGH RESIDUE SUITABILITY:

HS - Highly Suitable; S – Suitable; MA – Manage Appropriately; X - Poorly Suited. Suitability rating based on field observations and a weighted calculation of gray leaf spot, stress emergence, anthracnose stalk rot, northern corn leaf blight, and Diplodia ear rot scores. High Residue Suitability ratings may vary by environment and geography.

TEST WEIGHT:

Higher score indicates heavier test weight.

PLANT HEIGHT:

9 = Very Tall; 1 = Short.

MID-SEASON BRITTLE STALK:

Ratings determined by frequency and severity of stalk snappage at lower to middle stalk internodes from conditions usually favored by rapid or optimum growth. Relative response of hybrids can be affected by planting date, stage of growth, rate of growth, wind severity and other variables. Scores derived from both natural observations and artificial evaluation immediately prior to tasseling. NOTE: Scores do not reflect snappage enhanced by or due to herbicide interaction. The use of growth regulator herbicides such as 2,4-D and dicamba can increase the brittle snap potential of corn hybrids. Hybrids with lower brittle stalk ratings will require more caution and have a higher risk associated with the use of growth regulator herbicides. Early application, proper rates and application methods, along with both hybrid and herbicide selection can help reduce this risk. BRITTLE STALK PRECAUTION: In areas with higher potential for brittle stalk breakage, growers must balance the risk of planting hybrids with brittle stalk ratings of less than 4 against the overall performance of more resistant hybrids with higher ratings. All hybrids have a period of susceptibility to brittle stalk. Hybrids with below average ratings may have a longer period of susceptibility, or may experience more severe breakage relative to hybrids with higher scores during period of susceptibility.

DISEASE PRECAUTION:

Grower should balance hybrid yield potential, hybrid maturity and cultural practice selection against their anticipated risk of a specific disease and need for resistance. In high disease-risk conditions, consider planting hybrids with at least moderate resistance ratings of 4 or higher to help reduce risk. When susceptible hybrids with disease ratings of 1 to 3 are planted in conditions of high disease pressure, the grower assumes a higher level of risk. If conditions are severe, even hybrids rated as resistant can be adversely affected. Independent of yield reduction, diseases can predispose plants to secondary diseases such as stalk rots. This requires individual field and hybrid monitoring for stalk stability and timely harvest when warranted.

DISEASE & PEST RATINGS:

8-9 = Highly Resistant; 6-7 = Resistant; 4-5 = Moderately Resistant; 1-3 = Susceptible; Blank = Insufficient Data.

NORTHERN LEAF BLIGHT CAUTION:

In conditions where northern leaf blight (NLB) risk is high, growers should consider planting only hybrids with at least moderate NLB resistance ratings of 4 or higher.

GIBBERELLA EAR ROT CAUTION:

Ratings based upon visual symptoms at harvest. If Gibberella ear rot has caused significant damage in the past, growers should consider planting only hybrids with at least moderate Gibberella ear rot ratings of 5 or higher.