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Rice Research Verification Program Update – May 16, 2016
Author: Ron Baker, Rice Research Verification Program Coordinator

By Ron Baker and Ralph Mazzanti, Rice Research Verification Program Coordinators

South Arkansas:  All nine fields are planted in the South Arkansas RRVP.  Four of the nine fields have had herbicide and preflood N-STaR applications and are being flooded (Arkansas, Desha, Jefferson, and Lincoln Co.).  Jefferson and Lincoln County row water fields are being flushed on an intermittent basis.  Monroe County should reach the healthy 4-leaf stage this week allowing for herbicide and preflood urea application weather permitting.  The Phillips County field was the last field planted on Friday 5/13.  With continual rain in April pre-emergence herbicides have performed well again this year with residual activity observed anywhere from 4-5 weeks.  With the dry weather the last couple weeks in some fields the ground is cracking and the grass is starting to break through.  “Threading the needle time” is on for post-emergence herbicide and pre-flood fertilizer applications.  Dry ground conditions for urea + NBPT applications have been ideal so far hitting the DD50’s beginning date and optimum tillering stage for early pre-flood N.

North Arkansas:  The Randolph Co. field has now been planted bringing the total of RRVP fields in north Arkansas to eight.  The two fields injured by herbicide drift in Mississippi and Clay Co. are recovering well.  The Conway Co. field received a post-emergence application of RiceBeaux which should extend residual weed control to flood-up.  That is the same goal for the Cross Co. field that received the Obey + Permit Plus post-emergence application last week.  According to DD50 predictions, both fields will reach the flood-up stage within the next two weeks.

For field-specific information please click here.

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