Response of Asgrow® AG46X26 Brand to Skippy Stands in Twin-Row and Single-Row Plantings

Trial Overview

  • Previous learning center demonstrations have indicated that soybeans have the ability to compensate yields in response to a wide variety of issues that occur in the field.  
  • Twin-row plantings have increased in the midsouthern planting system, resulting in questions about the effects of skippy stands that sometimes occur in fields.
  • This demonstration was designed as a follow-up to previous work done with twin-row plantings with additional data and incorporating into the data a set of treatments planted in single rows. 
 

Research Objective

  • Evaluate the yield compensation ability of soybeans planted in single- and twin-row systems, at a variety of populations, and with several skippy stand configurations.
Location
Soil Type
Previous Crop
Tillage Type
Planting Date
Harvest Date
Potential Yield
Planting Rate
Scott, MS
Clay Loam
Soybeans
Conventional
05/10/2017
10/20/2017
60-70 bu/acre
Various

Site Notes:

This demonstration included treatments with planting rates ranging from 60,000 to 150, 000 seeds planted/acre.Single rows were on a 38-inch row spacing and were planted using conventional single-row planters.Twin rows were planted on beds using Monosem planters on 38-inch rows with 7.5 inches between twin rows.Plots were 6 rows x 175 feet long or approximately .1 acre/plot.Skips were introduced into the planted plots by blocking holes in planter plates prior to planting.  This was done using the “Skipulator” spreadsheet which is an original Monsanto Learning Center at Scott, MS idea.Treatment List: 
         - 60,000 seeds with 12-inch skip
         - 60,000 seeds with 24-inch skip
         - 60,000 seeds with 36-inch skip
         - 60,000 seeds, solid 
         - 90,000 seeds with 12-inch skip 
         - 90,000 seeds with 24-inch skip
         - 90,000 seeds, solid
         - 120,000 seeds with 12-inch skip
         - 120,000 seeds, solid
         - 150,000 seeds with 1-inch skip
         - 150,000 seeds, solid

 

 

Understanding the Results

 
Figure 3. Response of Asgrow® AG46X6 brand to skippy stands at Scott, MS. 
 
Figure 4. Response of Asgrow® AG46X6 brand to skippy stands at Scott, MS. 
 
Figure 5. Response of Asgrow® AG46X6 brand to skippy stands at Scott, MS. 
 
Figure 6. Response of Asgrow® AG46X6 brand to skippy stands at Scott, MS. 
 
Figure 7. Response of  Asgrow® AG46X6 brand to skippy stands at Scott, MS. 
 
Figure 8. Response of Asgrow® AG46X6 brand to skippy stands at Scott, MS. 
  • As previous results have indicated, the twin-row system showed a 3 bu/acre advantage vs. the single row.
  • Little yield response was observed from planting population.
  • No response was observed to any skip treatment in the field.
  • Results seemed to be similar in both sing.e- and twin-row plantings.
 

What Does This Mean for Your Farm

  • These results DO NOT recommending planting at low populations. If populations are reduced and somewhat uniformly distributed, soybeans have the ability to compensate and maintain acceptable yield potential.
  • This agrees with previous data showing tremendous compensation ability in soybean crops.
  • Evaluate each field and situation individually.
  • In many cases replanting is not necessary.  Less-than-perfect soybean stands can be kept with reasonable expectation of yield potential.
  • Contact your local Asgrow® representative for more information.