Table 4.

Proc Mixed results (F values) of effects of plant type (Bt or non-Bt maize) on plant growth (root dry weight, shoot dry weight, leaf chlorophyll content, ear number, and ear dry weight) at 60-day, 90-day, and 130-day harvests

Growth response	df	F value	P value
60-day harvest
Root biomass	1,4	0.22	0.66
Shoot biomass	1,4	0.00	0.96
Leaf Chl content	1,4	0.66	0.46
90-day harvest
Root biomass	1,4	0.88	0.40
Shoot biomass	1,4	0.58	0.49
Leaf Chl content	1,4	1.82	0.25
Ear no.	1,4	1.44	0.30
130-day harvest
Root biomass	1,4	0.01	0.92
Shoot biomass	1,4	0.08	0.79
Leaf Chl content	1,4	1.22	0.33
Ear no.	1,4	1.03	0.34
Ear wt	1,4	0.46	0.53