Term Description  
 
%ADF Percent Acid Detergent Fiber - represents the less digestible portion of the corn forage, containing cellulose, lignin and heat damaged protein. ADF is closely related to the digestibility of forages. Lower ADF values imply that the forage is more digestible. The most mature plant material will contain higher ADF concentrations. A low Concentration of ADF is desirable.
  
     
%CP Percent Crude Protein - consists of true protein, composed of amino acids, non protein nitrogen and unavailable protein. It is termed "Crude" protein rather then "Protein" because crude protein is determined by measuring the total nitrogen (N) concentration rather then the protein concentration of the feed. The total measured nitrogen is then multiplied by 6.25 to obtain the crude protein. This calculation is based on the fact that protein contains about 16 percent nitrogen. High crude protein is desirable.
  
     
%DM Percent Dry Matter - is the fraction of water-free materials in a forage. The percent moisture and the percent dry matter always equals 100. The most common method used to determine dry matter is weighing a sample before and after drying in an oven.  
     
%H2O Percent Moisture - is the percent water content of the grain at harvest.
  
     
%IVD Percent In Vitro Digestibility - is a measure of the percentage of the forage digestibility.  
     
%NDF Percent Neutral Detergent Fiber - is a measure of the fiber content of the corn forage. It is less digestible then non-fiber constituents of the forage. Forages with high NDF levels have lower energy. It is also a measure of potential forage intake. High NDF levels decrease the potential forage intake. Low NDF content is desirable  
     
%Oil Percent Oil - In corn grain, oil is stored in the embryo of the kernel. Higher oil content is correlated with higher energy values.  
     
%SL Percent Stalk Lodging - is the number of plants that are broken below the ear or plants that are 45° off of vertical at harvest divided by the total number of plants in the plot.
  
     
%STD Percent Stand - is the average number of corn plants with in plots as compared to a targeted stand. 100 percent of stand would mean that target population was reached.  
     
%Strch Percent Starch - starch from the grain, along with the digestibility of the fiber, comprise the majority of the energy in corn silage  
     
Bu/A Bushels / Acre - is the yield of shelled corn in bushels per acre adjusted to 15.5 percent moisture. Calculated on a 56 lbs bushel.  
     
CV (.05) Coefficient of Variability - is indicative of a trials precision. Trials with low levels of error variation have lower CV values.  
     
DT/A Dry Tons / Acre - is the tons of forage that is produced per acre after the water fraction of the forage is removed - 100 percent dry matter. Calculations based on a 2,000 pound ton.  
     
GT/A Green Tons / Acre - is tons of forage that is produced per acre with out subtracting the water fraction of the forage. Calculations based on a 2,000 pound ton.  
     
LSD Least Significant Difference - is the amount that an individual hybrid would have do differ from another hybrid in the same test to be considered significantly different from that hybrid.
  
     
Twt Test Weight - is the volumetric weight per bushel at harvest moisture.
 
     

 

Terms