Abstract
Abstract Two insecticides applied using 3 treatment regimes were evaluated for conservation of plant stand. Plots were 6 × 15 ft consisting of five 10.5 inch rows, arranged in a randomized complete block design and planted on 7 Sep 91 using standard agricultural practices. Each treatment consisted of some combination of the following application types using either Disyston 8 E at 1.0 lb (AI)/acre or Furadan 4 F at 1.0 lb (AI)/ acre per application: Check = no application; pre = preplant, broadcast soil surface treatment using a COa powered plot sprayer delivering 23 gal/acre, followed by light incorporation with a cultipacker. All preplant treatments were applied 1 d before planting; Fall = foliar applied on 12 Oct 91 (35 days post plant) using ° COj powered sprayer delivering 23 gal/acre finished spray. Stand counts were derived by counting plants in 27V4 inches of row (2 ft2 in 10.5 inch rows) at 2 randomly-selected locations per plot, converting to plants per ft2, and averaging these values to obtain number of plants per ft2 for each plot. The fall count was taken on 10 Oct 89 and the final count at harvest on 29 Jun 90. The percent change (% change) in stand was computed as follows (Fall stand - Spring stand)/Fall stand.
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