HYBRID FAMILY | Hybrid family identifies products that have the same base genetics. Manage products within the same family similarly
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MARKET SEGMENT | Designations indicate product is also suitable for the following market: HAE – High Available Energy (Pork and Poultry Feed); HTF – High Total Fermentables (Dry-Grind Ethanol); HES – High Extractable Starch (Wet Milling); WX – Waxy; WH – White food corn; YFC – Yellow food corn; AQ – Optimum® AQUAmax® product; BMR – Brown MidRib Corn.
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CRM (COMPARATIVE RELATIVE MATURITY): | There is not an industry standard for maturity ratings so comparing product maturity and harvest moisture ratings between companies is usually difficult. Use the CRM rating to compare Pioneer® brand products with competitive products of a similar maturity and harvest moisture. CRM ratings, and harvest moistures, for products within a family may vary slightly, depending upon the level of insect (ECB and CRW) infestation. Conventional and straight products 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 product fits your area’s growing season, compare its physiological CRM to a product that you plant or one that is successfully used in your area. |
GRAIN DRYDOWN: | Compares products 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. |
GDUs TO PHYSIOLOGICAL MATURITY | Measures differences in growing degree units (GDUs) required to zero milkline stage. To help decide if a new product fits your area’s growing season, compare its GDUs to physiological maturity to a product that you plant or one that is successfully used in your area
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EAR FLEX | Score reflects the ability of a product to flex ear size as plant density is reduced, or as growing conditions improve. |
STRESS EMERGENCE: | All products 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 brand products. 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 product 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 |
TEST WEIGHT: | Higher score indicates heavier test weight. |
EAR HEIGHT | 9 = High; 1 = Low. |
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 products 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.
BRITTLE STALK PRECAUTION: In 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 products. Products 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 product 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 products with brittle stalk ratings of less than 4 against the overall performance of more resistant products with higher ratings. All products have a period of susceptibility to brittle stalk. Products with below average ratings may have a longer period of susceptibility, or may experience more severe breakage relative to products with higher scores during period of susceptibility
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GOSS WILT RESISTANCE | 8-9 = Highly Resistant; 6-7 = Resistant; 4-5 = Moderately Resistant; 1-3 = Susceptible
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SILAGE CRM (Silage Comparative
Relative Maturity):
| With no industry standard for silage maturity, comparing maturity and harvest moisture across various companies’ corn-for silage hybrids can be difficult. Pioneer silage CRM ratings provide a relative comparison among Pioneer® brand products of rates at which products reach harvestable whole plant moistures. It is on the same scale as the CRM rating provided for grain corn products and does not represent actual days from planting or emergence to harvest moisture or half milkline.
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STARCH AND SUGAR, % | Percent starch and soluble sugars (DM basis) in the whole-plant sample predicted by NIRS. |
SILAGE YIELD | Based on whole-plant yield per acre (adjusted to 35% dry matter) from multi-year comparison with other products within a maturity range not exceeding 5 silage CRM units.
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FIBER DIGESTIBILITY | Based on 24-hour enzymatic estimate of percent degradable neutral detergent fiber (NDF) as a percent of total NDF in whole-plant sample, predicted by NIRS. |
SILAGE CRUDE PROTEIN | Based on the amount of crude protein in the whole plant, predicted by NIRS. |
MILK PER ACRE | 9 = Outstanding; 1 = Poor, based on University of Wisconsin MILK2006 utilizing silage yield, nutrient content and digestibility. |
MILK PER TON | 9 = Outstanding; 1 = Poor, based on University of Wisconsin MILK2006 utilizing silage nutrient content and digestibility |
BEEF PER ACRE | 9 = Outstanding; 1 = Poor, based on University of Wisconsin MILK2006 utilizing silage nutrient content and digestibility |
BEEF PER TON | 9 = Outstanding; 1 = Poor, based on University of Wisconsin MILK2006 utilizing silage nutrient content and digestibility |
TAR SPOT | Tar spot scores reflect the relative sensitivity of the hybrids evaluated. Products with higher scores pose lower risk of severe disease development. In areas with tar spot pressure, consider using products with higher tar spot ratings. In addition, consider the use of fungicides labeled for use on tar spot when the disease is present. As more evidence is collected, suggested score minimums for high-risk conditions will be developed. |