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16
Jul
2018
Rice Research Verification Program Update – July 13, 2018
Author: Ralph Mazzanti, Rice Research Verification Coordinator

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

In the south, the Chicot and Desha Co. fields are close to 50% heading. Most fields are now in the late boot to early heading stage. Sheath blight has reached threshold levels at the Clark Co. field warranting a fungicide application. Flood levels have improved this week and blast symptoms are minimal. Stink bugs are prevalent on heading rice and sweeping will intensify next week. Heat units have built so fast that DD-50’s have moved up between 4 and 8 days. Prolonged, excessively high nighttime temperatures are a concern while rice is flowering and heading. As much as we need a good general rain, heavy pop-up showers during flowering can also be a concern.

In the north, all fields are progressing very rapidly. Jackson is expected to reach 50% heading by next week. White and St. Francis received their late boot N application this week. Woodruff is finally showing some encouraging improvement in barnyardgrass control with the rice now overtaking grass that has been suppressed or, to a lesser degree, killed by herbicides. No sheath blight treatments were needed this week but the Clay Co. field is being monitored closely for any increased threat from the disease.

To view field-specific information, see: RRVP Update July 13 2018.


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