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26
Apr
2013
Arkansas soybean update – April 26, 2013
Author: Jeremy Ross, Extension Agronomist - Soybeans

For the week ending April 23, 2013, the USDA/NASS reported 4.3 days suitable for fieldwork.  Topsoil moisture supplies were 2 percent short, 62 percent adequate, and 36 percent surplus.  Subsoil moisture supplies were 1 percent very short, 7 percent short, 70 percent adequate and 22 percent surplus.  Low temperatures ranged from 30 to 44 degrees Fahrenheit.  Highs ranged from 82 to 89 degrees Fahrenheit.  Precipitation on Thursday covered the whole state.  Most areas received from half an inch to over 2 inches of rain.

Producers had planted 4 percent of the soybean crop last week, 23 percent behind 2012 and 10 percent below the five-year average.  Major farming activities included prepping fields and planting row crops.  Most field work was halted at the end of the week due to significant precipitation.  Cooler temperatures have slowed row crop emergence.

 

Percent of Progress

Crop Stage

Current Week

Previous Week

2012

5-Year Avg

Soybeans Planted

4

1

27

14

Chart of soybean planting dates in Arkansas

 

With the current wet weather pattern we are currently in, it is a good possibility that some acreage intended for other row corps (corn, cotton, rice, etc.) may be switched to soybean.  Talking to several seed companies, several popular soybean varieties are already in tight supply or already gone.   Therefore, soybean producers will need to take precautions to protect soybean seed to ensure good emergence and proper plant stands during the first planting.  There may not be enough seed supply of certain soybean varieties for replanting.  These precautions that should be taken are:

Obtain current germination and accelerated aging scores for each lot of soybean seed

  • Many seed companies will supply growers with germination and accelerated aging scores for seed lots.  Growers can also send in seed sample to the Arkansas State Plant Board for these tests.

Fungicide/Insecticide seed treatments

  • There are a number of seed treatments on the market that soybean growers can use.  The most important things to keep in mind are proper use rate for each product and good seed coverage.

Good land preparation

  • Smooth fields that are weed free will give young  soybean seedlings the best opportunity to maximize yield.

Proper planting depth

  • Soybean should be planted 1 to 1.5 inches in depth within the soil moisture.

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