Abstract
Abstract Rice was planted in May of each year on loessial silt loam soil at the Macon Ridge Branch of the Northeast Research Station. Tests were arranged in a randomized complete block design with 4 replications. All plots were sampled for root-feeding larvae by taking 3 soil cores (9 cm dia × 10 cm deep) from drill rows, once a week, for 4 wk after establishing permanent Hood. Cores were processed by washing through a #40 mesh sieve and floating the larvae out in a saline solution. Granular insecticides were applied by hand shaker to plots measuring 9 m sq. Preplant treatments were incorporated into the top 5 cm of soil with a rotary tiller. Preflood treatments were applied 1 day prior to permanent flood. Postflood treatments were applied 1 wk after permanent flood. Plots were mechanically harvested and yields were converted to lb/acre at 12% moisture.
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