treatments with two replications.


Treatment
Traditional



T + density



T + nitrogen



T + variety


Description
25,000 plants/ha,
local variety.

50,000 plants/ha,
local variety.

25,000 plants/ha,
local variety

25,000 plants/ha,
Tuxpefo variety


no N applied,



no N applied,



100 kg/ha of N,



no N applied,


Results of this trial are shown in Table III-6.


TABLE III-6.


Maize yield data for a four-treatment
"plus" trial.


 Treat-
 ment x
Treatment Block I Block II totals

 kg/plot

Traditional (T) 4.3 3.9 8.2 4.1
T + density 4.5 5.9 10.4 5.2
T + nitrogen 4.5 5.4 9.9 4.95
T + variety 5.7 6.6 12.3 6.15
 Totals 19.0 21.8 40.8 5.1

Source: Adapted from CIMMYT data.

After calculating the sums of squares the ANOVA table is
shown in Table III-7.


consists of four