By Ron Baker and Ralph Mazzanti, Rice Research Verification Program Coordinators
In the south, the Chicot County field has received its late boot nitrogen application. This is right in line with the DD-50 recommendation. GreenSeeker did not show a need for mid-season nitrogen last week in Arkansas, Jefferson and Lee Counties but this week was different. The field values were greater than the 1.15 benchmark resulting in mid-season applications. Adequate flood levels have continued to be an issue. Early leaf blast has been detected in the Desha County field along with struggling water levels. Sheath blight has not reached threshold levels in any fields. Most field stages are between early to mid-boot. Grass escapes are scattered in the Chicot, Desha and Lincoln County fields.
In the north, fields continue to progress well. Poinsett and Jackson have received a mid-season N application. Craighead (furrow irrigated) has received its final 100 lbs urea. Green Seeker continues to confirm no need for mid-season N for Clay County. According to DD50, White is expected to be ready for the boot application by the end of next week and St. Francis a few days later. Flood water in Jackson is being kept very shallow temporarily to help stimulate new root growth and stay ahead of a moderate level of hydrogen sulfide toxicity. No treatment level sheath blight found in program fields at this point. Woodruff has received the planned post-flood application of Ricestar HT for grass control but needs a little more time to evaluate its effectiveness.
View the full report for field-specific information: RRVP Update – June 29, 2018