ISSUE #375

375 - Stand Establishment Foundation for Success

2-23-2000

The Ag Notes No. 373 sent out December 28, 1999 have generated some questions and much discussion among shareholders and agriculturists. How does that plant population data from quality lab samples compare to university research trials? Data from 15 trials conducted at NDSU and the U of MN and 10 other trials conducted by Michigan, Manitoba and American Crystal Sugar Company was reviewed. Results from two trials conducted by Dr. Larry Smith at the University of Minnesota are representative of all this research.

In Table 1 data from 1978-1980 clearly shows that a plant population of 150 beets/100’ of 22" row at early or late harvest dates nearly always gave:

  • Highest recoverable sugar/acre
  • Highest recoverable sugar/ton

Table 1. The Effects of Plant Population and Time of Harvest

PopulationHarvest DateRecoverable Sugar
lbs/Albs/T
50 9-23 3810 248
  10-1 4536 260
  10-13 4288 268
  10-22 4984 292
100 9-23 4483 261
  10-1 4969 265
  10-13 5404 291
  10-22 5558 303
150 9-23 4691 266
  10-1 5509 276
  10-13 5693 295
  10-22 5764 298
200 9-23 4836 275
  10-1 5487 292
  10-13 5154 290
  10-22 5286 294
Significance
LSD (.05)
  **
590
**
18.6

On Sugarbeet Yield and Quality. Dr. Larry Smith, U of MN.

Stand Establishment Goals for Minnesota and North Dakota Sugarbeet Growers Include:

  • Adjusting seed spacing at planting based on:
    1. Percent germination of your seed lot
    2. Anticipated seedling emergence for each field
    3. Expected stand loss from emergence to harvest

  • Achieving a stand of 150-160 beets/100’ of row at the 6-8 leaf stage
  • Thinning plant stands of greater than 175 plants per 100’ of row

Other Conclusions From These Plant Population Trials Include:

  • One hundred twenty-five beets/100’ of row only occasionally gave equal recoverable sugar/acre compared to 150 beets per 100’ of row.
  • One hundred fifty beets/100’ of row at the 6-8-leaf stage is optimum.
  • One hundred seventy-five beets/100’ of 22’ row gave very similar yield and quality to 150 beets.
  • Two hundred beets/100’ of row or higher populations usually caused losses of 100-300 lbs. of recoverable sugar per acre and should be thinned.

When might low plant populations be acceptable? Table 2 is a 3-year summary of the effect of planting date and plant population on recoverable sugar per acre. This data shows 150 beets/100’ of 22-inch rows gave the highest recoverable sugar per acre at all three planting dates. However, only 75 beets/100’ of row from a late April planting gave nearly equal or better recoverable sugar per acre than any population at mid or late May planting dates. Don’t replant fields with lower populations (60-70 beets/100’ row) from early planting dates.

Table 2. Effect of Planting Date and Population on Recoverable Sugar/Acre

Plants/APlants/100 Ft. RowLate AprilMid MayLate May
lbs/A
11,800 50 4,890 4,010 2,750
17,280 75 5,790 4,750 3,180
23,760 100 6,250 5,210 3,660
29,700 125 6,560 5,560 4,040
35,640 150 6,540 6,060 4,190
41,040 175 6,310 5,160 3,660
47,520 200 6,240 4,970 3,400
LSD 5%   330 330 330

Source: Smith, L., Northwest Experiment Station, University of Minnesota, Crookston, Minnesota, Sugarbeet Research and Extension Reports.

Note: Contact your agriculturist for help with questions about stand establishment.

Help ensure successful stand establishment by fine tuning operation of your planter at one of the following plant test stand locations.

2000 NDSU Planter Test Stand Schedule
DateUnit 1Unit 2Unit 3
Feb 22 Glendive - Holly Sugar    
23 Sydney - Holly Sugar    
24 Sydney - Holly Sugar    
25 Sydney - Holly Sugar    
28   Mahnomen - Mahnomen Implement  
29 Drayton - ACH Factory Shop Mahnomen - Mahnomen Implement  
Mar 1 Kennedy - Urbanek Implement    
2 Kennedy - Urbanek Implement    
6 Kindred – RDO Equipment Ada - Konkin Implement  
7 Kindred – RDO Equipment Ada - Konkin Implement  
8 INTERNATIONAL SUGARBEET INSTITUTE
9 INTERNATIONAL SUGARBEET INSTITUTE
13 Whap/Breck - MinnDak Moorhead - Betaseed Res. Farm  
14 Whap/Breck - MinnDak Moorhead - Betaseed Res. Farm  
15 Whap/Breck - MinnDak Hawley - Clay Becker Implement  
16   Hawley - Clay Becker Implement  
20 Grand Forks - G.F. Equipment Hallock - Western Implement Glyndon - Novartis Res. Farm
21 Grand Forks - G.F. Equipment Hallock - Western Implement Glyndon - Novartis Res. Farm
22 Grand Forks - G.F. Equipment Warren - Evergreen Implement  
23 Grand Forks - G.F. Equipment Warren - Evergreen Implement  
24 Grand Forks - G.F. Equipment    
27 Fisher - Steve Williams Farm Shop Moorhead - Crystal Seed Plant  
28 Fisher - Steve Williams Farm Shop Moorhead - Crystal Seed Plant  
29 Minto - Kilichowski Farm Shop Moorhead - Crystal Seed Plant  
30 Minto - Kilichowski Farm Shop Hillsboro - Oppegard Equipment  
31   Hillsboro - Oppegard Equipment  
Apr 3 Renville - SMSBC (1pm-start) Cavalier - Cavalier Imp (1pm start)  
4 Renville SMSBC Cavalier - Cavalier Implement  
5 Renville SMSBC Cavalier - Cavalier Implement  
6 Renville SMSBC Cavalier - Cavalier Implement  
7 Renville SMSBC