Table 6 Results of the orthogonal array testing and ANOVA of the longitudinal uniformity coefficient.

From: Optimized design and experiment of a controllable rotary tube strip fertilizer spreader for hilly mountainous terrain

Source of variance

Square sum

Degree of freedom

Mean square

F-value

p-value

Model

2267.25

6

377.88

2170.73

0.0005**

A

1169.6

2

584.8

3359.42

0.0003**

B

459.28

2

229.64

1319.17

0.0008**

C

638.38

2

319.19

1833.6

0.0005**

Error

0.35

2

0.17

  

Sum

2267.6

8

   
  1. ** p < 0.01(highly significant); * 0.01 < p < 0.05(significant); p > 0.05(non-effect).
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