Ecological Archives A016-055-A5

Alejandro C. Costamagna and Douglas A. Landis. 2006. Predators exert top-down control of soybean aphid across a gradient of agricultural management systems. Ecological Applications 16:1619–1628.

Appendix E. MANOVA table for the effect of agricultural practices on the five more abundant Aphis glycines foliar predators at the Kellogg Biological Station Long Term Ecological Research (KBS-LTER) site during 2003.


Effect

Pillai’s Trace

df

F

P


Agricultural practice

0.2613

10, 148

2.25

0.0176

Block

0.4157

25, 390

1.41

0.0912

Date

0.5251

4, 75

20.73

<0.0001

Agricultural practice × Date

0.2603

8, 152

2.84

0.0057

Block × Date

0.2733

20, 312

1.14

0.3034




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