Cotton (Gossypium hirsutum) Cultivars Exhibiting Tolerance to the Reniform Nematode (Rotylenchulus reniformis)

Table 5

Early season reproductive index and seed cotton yield in a field study at the Delta Research and Extension Center in Stoneville, MS, in 2006 and 2007; data averaged across fields and cultivars.

Nematicide	Early season RI^x		Seed cotton yield (kg/ha)^y
No nematicide	2.28	a	2466.4	b
Nematicide applied^z	1.93	b	2638.5	a

^xEarly season RI = Pm/Pi = (midseason reniform nematode count)/(planting reniform nematode count); means followed by the same letter in this column are not significantly different at the 0.10 level based on ANOVA.
^ySeed cotton yield taken from the middle two rows of subplots; means followed by the same letter in this column are not significantly different at the 0.05 level based on ANOVA.
^zAldicarb applied in furrow at planting (0.84 kg a.i./ha) plus side dress application at pinhead square (1.17 kg a.i./ha).