Evaluation of New Deltapine® Cotton Varieties

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January 20, 2021

Evaluation of New Deltapine® Cotton Varieties - 2020 

 

TRIAL OBJECTIVE

  • Each season, new Deltapine® cotton varieties are evaluated at the Bayer Learning Center in Scott, Mississippi for yield potential and growth habit. This information helps define the management practices needed to optimize the performance of existing and newly-introduced Deltapine cotton varieties. 

  • This study was conducted to evaluate new cotton varieties in the cotton production system at Scott, Mississippi. 

RESEARCH SITE DETAILS

Location Scott, MS Highway Plot
Scott, MS  Buckshot Plot
   
Soil Type  Commerce silt loam - 18 CEC
Clay silt loam -  41 CEC
 

Previous
Crop
Corn    
Tillage
Type
Conventional 

 
Planting Date 5/12/20
5/10/20
   
Harvest Date 10/01/20
10/10/20
 

Potential Yield
 (lbs/acre)
1500
1000
   
Seeding Rate
(seeds/acre)
41,000

 

 

  • Sixteen Deltapine® cotton varieties were included in this study. 
    • DP 1612 B2XF
    • DP 2012 B3XF
    • DP 1614 B2XF
    • DP 1916 B2XF
    • DP 1518 B2XF
    • DP 2020 B3XF
    • DP 1522 B2XF
    • DP 1822 XF
    • DP 1823 NRB2XF
    • DP 2123 B3XF
    • DP 1725 B2XF
    • DP 2127 B3XF
    • DP 2038 B3XF
    • DP 1845 B3XF
    • DP 1646 B2XF
    • DP 2055 B3XF
  • Cotton varieties were planted at both Highway and Buckshot site locations in single replicate strip plots 6 rows wide and 600 feet long, approximately 0.3 acre/plot.
  • 80 lbs nitrogen/acre was applied as 32% soil applied liquid.
  • Stance® plant growth regulator (PGR) was applied to all varieties, with a total of 16 oz/acre applied for the season. Application dates and rates are as follows:
    • 7/10/2020 – 4 ounces/acre applied
    • 7/17/2020 – 4 ounces/acre applied
    • 7/26/2020 – 4 ounces/acre applied
    • 8/05/2020 – 4 ounces/acre applied
  • All weed control, insect control, and irrigation inputs were applied per local standards.
  • Plots were harvested for yield and lint samples were ginned using research gins at Scott, Mississippi to estimate turnout.
  • Noted weather impacts to this study include: 
    • The first PGR application was delayed approximately 10 days past optimal application date due to rain on the intended day of application and repeated rain events afterward.
    • This plot was harvested after two major hurricane events which influenced harvestability and final yield potential.

 

 

UNDERSTANDING THE RESULTS

image Figure 1. Calculated average lint yield (lb/acre) by cotton variety at Highway site in 2020.
image Figure 2. Calculated average lint yield (lb/acre) by cotton variety at Buckshot site in 2020.

  • Despite weather challenges encountered in 2020, new and current commercial Deltapine® cotton varieties tested appeared to have high yield potential at both the Highway and Buckshot site locations in Scott, Mississippi (Figures 1,2).
  • This trial included varieties that are not well-adapted to the growing conditions in the Midsouth.
    • DP 1822 XF is a West Texas cotton variety with no Bt traits and may have lost yield due to no protection from Lepidopteran pests.
    • DP 2123 B3XF is a Texas cotton variety and is best fit in dryland environments.
    • DP 1823NR B3XF is a root-knot nematode resistant (RKN) cotton variety and is best fit in short-season environments.
    • DP 2055 B3XF is the most full-season cotton variety in the set and may have been challenged with timely maturity.

KEY LEARNINGS

  • Cotton variety selection is one of the most important management decisions a grower must make each growing season. Selecting multiple cotton varieties allows for flexibility in relative maturity, management decisions, and risk aversion. 

  • Evaluation of the new Deltapine® cotton varieties provides data to help growers make informed variety selection decisions.  

  • Consult your local Bayer representatives for further information about variety placement and management for the 2021 season.

 

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February 18, 2020

Evaluation of New Deltapine® Cotton Varieties - 2019 

 

TRIAL OBJECTIVE

  • Each season a new set of candidate cotton varieties are introduced through the Deltapine® New Product Evaluator (NPE) program. 

  • This study was conducted to evaluate the new products in the cotton production system at Scott, Mississippi.

 

RESEARCH SITE DETAILS

Location Scott, MS    
Soil Type  Commerce silt loam  

Previous
Crop
Corn    
Tillage
Type

Conventional 


 
Planting Date 5/17/19     
Harvest Date 10/9/19   

Potential Yield
 (lbs/acre)
2400    
Seeding Rate
(seeds/acre)
37.5K

 

  • Twelve Deltapine® cotton varieties were included in this study:
    • DP 1614 B2RF
    • DP 1916 B3XF
    • DP 1518 B2XF
    • DP 2012 B3XF
    • DP 1823NR B2XF
    • DP 1725 B2XF
    • DP 2020 B3XF
    • DP 2038 B3XF
    • DP 2055 B3XF
    • DP 1835 B3XF 
    • DP 1845 B3XF
    • DP 1646 B2XF

  • Varieties were planted in strip plots 6 rows wide and 550 feet long, approximately 0.25 acre/plot.

  • Plant growth regulator was applied to all varieties as 4.2% a.i. mepiquat chloride, with a total of 38 oz applied at the following timings and rates:
    • 7/14 at 10 oz/acre
    • 8/7 at 12 oz/acre
    • 8/30 at 16 oz/acre
  • All weed control, insect control, and irrigation inputs were applied per local standards.

  • Six rows were harvested for yield and lint samples were ginned using research gins at Scott, Mississippi to estimate turnout. 

UNDERSTANDING THE RESULTS

 

 
image
image
image
image
  • An average turnout of 42% was observed across the tested varieties (Figure 1). 

  • Higher than expected yields were observed across this study. Of the 12 tested varieties, 9 varieties had calculated yields of greater than 4 bales/acre (greater than 1920 lb/acre). The trial average was 1997 lb/acre. 

  • In this demonstration, the highest yield ever recorded at Scott Learning Center was harvested. DP 1646 B2XF yielded 2394 lb of lint/acre or 4.9875 bales/acre. This is likely a function of favorable weather, management, and yield potential, which were all greatly positive factors during 2019. 

KEY LEARNINGS

  • The NPE candidate varieties and current commercial Deltapine® products appeared to have very high yield potential in the Scott, Mississippi location during 2019. 

  • Consult your local Bayer representatives for further information about variety placement and management for the 2020 season. 

 

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