Comparison of Three and Four Bract Squares on Several Deltapine Cultivars

Abstract

The number of three and four bract squares on several currently used Deltapine cultivars were observed during the early squaring period in plots untreated and treated for early season insect control. The percent of four bract healthy squares counted in June were higher in Deltapine 41 than several other varieties including Deltapine 90. The percent of four bracts between treated and untreated plots were significantly different in only two out of 5 locations. In another test where both DP 90 and DP 61 were compared for total healthy plus shed squares, DP 90 and DP 61 were equal on several dates in their proportion of three and four bract squares.