By Ralph Mazzanti and Ron Baker, Rice Research Verification Program Coordinators
South Arkansas: With warmer nighttime and daytime temperatures the rice crop is responding well in growth and color. Seven out of nine fields have received their N-STaR pre-flood nitrogen applications and are flooded or being flooded. The two fields in the south which have not received pre-flood nitrogen are Chicot and Phillip Co. The Chicot Co. field has been flushed and is drying waiting on more seed to germinate for a minimum stand count. The Phillips Co. field which was the last planted received 0.9” rainfall (with a chance of more coming) and is now emerging. The Lincoln Co. row water field has some plants dying on the beds and salt wicking is suspected. Stand loss does not seem to be a problem as of now. So far, all fields which received pre-flood nitrogen were in the beginning to optimum tillering stage according to the DD50 reports. Insecticide seed treatments are holding well with minimum rice water weevil scarring detected.
North Arkansas: All fields have responded really well to warmer temperatures. The Randolph Co. field now has a good stand including the bottom 10 acres but that portion of the field is submerged for the second time by river overflow. Four fields, Cross, Conway, Jackson and Mississippi have received their N-STaR nitrogen application and either have or are in the process of having the permanent flood applied. Residual herbicides continue holding well in all other fields except Randolph where we are waiting for suitable conditions to apply herbicide. Scheduled overlapping residuals are expected to carry Clay and Lawrence to flood-up. The same strategy has worked very well this year in Cross, Conway and Jackson Counties. Better still, timely showers kept Mississippi County’s single application at planting of Command and Facet activated enough to carry the field all the way to flood-up.
For field-specific information, see table (pdf).