Establishing excellent uniform plant populations early in the spring greatly enhances the profit potential for any field. Careful attention to crucial stand establishment factors is important to meeting your plant population goals in 2005. Recommended plant populations are approximately 180 beets per 100 foot of row to maximize on farm profits.
|Seed Spacing (Inches)||% of Fields||RSA (lbs)|
|3.0 - 3.49||0.26||7052|
|3.5 - 3.99||0.63||6814|
|4.0 - 4.49||5.0||6673|
|4.5 - 4.99||23.2||6560|
|5.0 - 5.49||50.4||6521|
|5.5 - 5.99||17.9||6383|
|6.0 or >||2.5||6235|
Replant acres in the last 5 years have varied from a low of 1,240 acres in 2001 to a high of 80,022 in 2002. Yield loss of 1 to 2 tons per week delay in planting is common. Growers can minimize risk of stand loss or replanting using a number of practices.
Half of all sugarbeet growers indicated weed control was their greatest challenge in 2004. Kochia was listed as the most serious weed problem by 41% of growers. Lambsquarters and pigweed were listed by 25 and 21% of all growers.
Soil applied herbicides are an excellent option to achieve maximum weed control in heavy weed pressure fields. Products available are Nortron or Ethotron and Dual Magnum. A few growers still use Eptam and Roneet. For the top 50 grower group from 2000-2004 just over 40% used a soil applied herbicide. American Crystal Sugar Company growers as a whole used a soil applied herbicide 28% of the time.
Data in Table 2 Indicates significant increases in Lambsquarters and Kochia control using PRE Nortron versus microrates alone. Crop injury increased only slightly.
|Treatment, Qt/A||Colq Cntl Morris (%)||Rrpw Cntl Reyn (%)||Kochia Cntl 2 loc (%)||Sugb Injury 7 loc (%)|
|PRE Nortron 3.0/M-R (3X)||85||100||57||8|
|PRE Nortron 3.75/M-R (3X)||93||100||67||10|
|PRE Nortron 3.0/M-R (4X)||99||100||72||11|
|PRE Nortron 3.0/C-R (4X)||100||100||94||16|
Dual can be successfully used as well, although crop injury risk is greater. Research data from 2004 at NDSU is presented in Table 3. Dual gave increased pigweed and lambsquarters control over Microrate use alone. It will improve Kochia control but is less effective than Nortron.
|Treatment, Pt/A||Colq Cntl Morris (%)||Rrpw Cntl Reyn (%)||Kochia Cntl 2 loc (%)||Sugb Injury 7 loc (%)|
|Pre Dual Magnum 2.0/M-R (3X)||80||100||41||16|
|PPI Dual Magnum 2.0/M-R (3X)||89||97||36||23|
|PRE Nortron 7.5/M-R (3X)||93||100||67||10|
Remember to contact your agriculturist to sign 24c label indemnity forms if you plan on using Dual Magnum as a PRE or PPI application in 2005.