Andrew Van Burgel
Andrew Van Burgel
Andrew Van Burgel
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Analysis – Treatment main effects<br />
• Spatial trend – compare paddock yields either side of treatment<br />
area and adjust only if necessary.<br />
• AOV<br />
• experimental unit – run means<br />
• blocking for harvest direction and machine effects (if present)<br />
• Case Study:<br />
Analysis of variance<br />
Variate: Yield<br />
Source of variation d.f. s.s. m.s. v.r. F pr.<br />
Run_Type stratum 2 0.325462 0.162731 39.94<br />
Run_Type.*Units* stratum<br />
Gypsum 3 0.026041 0.008680 2.13 0.198<br />
Residual 6 0.024447 0.004075<br />
Total 11 0.375950<br />
Tables of means<br />
Gypsum 625 1875 4375 9375<br />
3.335 3.451 3.433 3.439<br />
Least significant differences of means (5% level)<br />
l.s.d. 0.1275
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