Research Article
Cotton (Gossypium hirsutum) Cultivars Exhibiting Tolerance to the Reniform Nematode (Rotylenchulus reniformis)
Table 2
Significance levels for main effects and their interactions for early and late season reniform nematode reproductive indices (RI), seed cotton yield, and tolerance index (TI) in a field study at the Delta Research and Extension Center in Stoneville, MS, in 2006 and 2007.
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vFixed effects are the main effects of cultivar (C) and nematicide and all interactions of those main effects; random variables are field (), , , and . wEarly season RI = Pm/Pi = (midseason reniform nematode count)/(planting reniform nematode count). xLate season RI = Pf/Pm = (harvest reniform nematode count)/(planting reniform nematode count). ySeed cotton yield taken from the middle two rows of subplots. zTI = [(seed cotton yield in nontreated plot)/(seed cotton yield in nematicide-treated plot)]*100. |