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Arkansas soybean update – June 7, 2013
Author: Jeremy Ross, Extension Agronomist - Soybeans

For the week ending June 2, 2013, the USDA/NASS reported 4.5 days suitable for field work.  Topsoil moisture supplies were 3 percent short, 59 percent adequate, and 38 percent surplus.  Subsoil moisture supplies were 5 percent short, 68 percent adequate and 27 percent surplus.

Producers had planted 58 percent of the soybean crop last week, 33 percent behind 2012 and 7 percent below the five-year average.  The soybean crop emergence was at 45 percent, 37 percent behind 2012 and 7 percent below the five-year average.


Percent of Progress

Crop Stage

Current Week

Previous Week


5-Year Avg.

Soybeans Planted











I’m not telling anyone anything new when I say that this has been a tough year.  We are still trying to get research plots planted, and everything that we got planted last week will probably need to be replanted after 6+ inches of rain at the end of last week.  So the hot question that I have been receiving recently is whether or not to replant.  This can be a difficult question and should be asked on a field by field basis.  The first item to determine is the plant population.  Stand counts should be taken in several stops within a field to calculate the estimated plants per acre.  At this time of year, the minimum plant population with little to no yield loss should be no less than 80,000 plants per acre.  One of the most important features of the soybean plant is its ability to compensate for low plant populations.

The next thing to consider is uniformity of the stand.  If there are large skips within a row or large gaps in the field, replanting may be necessary.  These areas with bare ground could be problematic later in the season do to weed pressure, low irrigation efficiency, and increased insect pressure.

If a replant is considered, several factors such as calendar date, termination of the existing stand, maturity group of new crop, irrigation capabilities, and harvest timing should be evaluated.  In some situations, it may be more profitable to keep the old crop rather than replanting.


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