Corn Product Silage Quality and Tonnage

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NOVEMBER 19, 2020

Corn Product Silage Quality and Tonnage - 2020

 

TRIAL OBJECTIVE

  • Corn silage is an important feedstock for cattle producers across the Great Plains.
  • Desirable corn products should produce high tonnage with favorable silage quality characteristics.
  • In this study, the objective was to provide insights to farmers on which of the corn products evaluated have high tonnage and good silage quality characteristics.

 

RESEARCH SITE DETAILS

Location Gothenburg, NE     
Soil Type  Silt loam   

Previous
Crop
Soybean      
Tillage
Type
 
Strip-till


 
Planting Date 4/28/20    
Harvest Date 9/15/20  

Potential Yield
 (bu/acre)
250    
Seeding Rate
(seeds/acre)

40K


 

 

  • The study was set up as a randomized complete block with three replications.
  • Six Channel® corn products were evaluated.
  • Corn was sprinkler irrigated. Fertility included 100 lb N/acre applied with a streamer bar on 4/27/20, followed by 90 lb N/acre and 15 lb S/acre applied with 360 Y-DROP® applicators on 6/24/20. Weeds were controlled as needed and no fungicides or insecticides were applied. 
  • Silage was harvested when most of the products were at approximately half-milk line using a silage chopper without a kernel processor. Total biomass was collected and weighed. A subsample of the freshly-chopped material was collected and sent to Dairyland Laboratories Inc. for silage quality analysis.
    • Two corn products (213-93STXRIB, 218-44STXRIB) had greensnap at a high level which did not allow for silage tonnage to be calculated but a subsample was taken for silage quality analysis.

 

UNDERSTANDING THE RESULTS

image Figure 1. 215-98STXRIB Brand blend corn product at the time of cutting.
image Figure 2. Average silage yield (tonnage) for corn products tested.
image
  • Corn product tonnage was numerically different but variability in the study did not allow for significant differences to be observed (Figure 2).
  • Corn silage quality was different in all parameters tested (Table 1). 
  • 215-98STXRIB Brand blend produced the highest average tonnage and along with 209-15STXRIB Brand blend, had the best quality as judged by milk per ton. 218-44STXRIB Brand blend had the poorest quality as indicated by milk per ton.

 

KEY LEARNINGS

  • Producers should work with their local seed sales team to identify which Channel® corn product is right for their operation.   

 

7006_R3_20

November 19, 2019

Corn Product Silage Quality and Tonnage - 2019

 

TRIAL OBJECTIVE

  • Corn silage is an important feedstock for cattle producers across the Great Plains.  

  • Desirable corn products should produce high tonnage with favorable silage quality characteristics. 

  • In this study, the objective was to provide insights to farmers on which of the 22 corn products evaluated have high tonnage and good silage quality characteristics.

RESEARCH SITE DETAILS

Location Gothenburg, NE    
Soil Type  Hord silt loam  

Previous
Crop
Grain sorghum    
Tillage
Type

Strip tillage  


 
Planting Date 5/23/19    
Harvest Date 10/1/19  

Potential Yield
 (bu/acre)
250    
Seeding Rate
(seeds/acre)
36K

 

UNDERSTANDING THE RESULTS

  • The study was set up as a randomized complete block with three replications. 

  • Twenty-two corn products were evaluated. 

  • Corn was sprinkler irrigated and weeds were controlled as needed. No fungicide or insecticide was applied. 

  • Silage quality was sampled for each corn product at ½ milk line. Sampling dates varied by relative maturity, but all sampling occurred in the last two weeks of September.  

  • Corn products were hand-harvested about 4 inches above the soil surface to provide a representative sample and were then chopped with a silage chopper. 

  • A subsample of the freshly-chopped material was collected and sent to Dairyland Laboratories Inc. for silage quality analysis. 

  • Total biomass was collected, weighed, and tonnage was determined for each corn product.

UNDERSTANDING THE RESULTS

 

  • Corn products did vary in silage quality and tonnage as there were significant differences in all parameters tested as reported in Table 1.

 
 
Figure 1. Short-and long-season corn products at harvest.
im 198-98STXRIB corn product at silage harvest.
im 120RM-A corn product at silage harvest.
im Wet t/a 65% – wet tonnage; Dry t/a – dry tonnage; DM – Dry Mater; NDF – Neutral Detergent Fiber; NDFD - incremented measurement of NDF; uNDF - undigested NDF residue; IVSD 7hr - in vitro starch digestibility after 7 hrs; ADF – Acid Detergent Fiber; CP – Crude Protein; TFA – Total Fat; TDN – Total Digestible Nutrients; NEL – Net Energy for Lactation; NEG – Net Energy for Gain. 

KEY LEARNINGS

  • Producers should work with their local seed sales team to identify how their branded corn products performed in this study. 

     

7006_R3

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