Results

There were no effects of the treatments on the cover crop biomass in 2022.

Aboveground biomass

                
                 Fodder radish Black oats Tall fescue
  Ref                        3          3           3
  Compost                    0          0           0
  LB                         3          3           3
  LB extensive               0          0           0
  LB Sand                    0          0           0
  SB                         3          3           3
  SS                         3          3           3
  SS Caterpillar             0          0           0


    studentized Breusch-Pagan test

data:  md
BP = 14.648, df = 12, p-value = 0.2613

Call:
lm(formula = droge_stof_kg_ha ~ ondgr_bw * gr_bem + blok, data = dataset_above)

Coefficients:
                 (Intercept)                    ondgr_bwLB  
                     890.667                       -26.667  
                  ondgr_bwSB                    ondgr_bwSS  
                    -144.000                        -1.333  
            gr_bemBlack oats             gr_bemTall fescue  
                      22.667                        -5.333  
                        blok   ondgr_bwLB:gr_bemBlack oats  
                      -8.667                       -37.333  
 ondgr_bwSB:gr_bemBlack oats   ondgr_bwSS:gr_bemBlack oats  
                      29.333                       -49.333  
ondgr_bwLB:gr_bemTall fescue  ondgr_bwSB:gr_bemTall fescue  
                    -102.667                        58.667  
ondgr_bwSS:gr_bemTall fescue  
                      17.333  
Analysis of Variance Table

Response: droge_stof_kg_ha
                Df Sum Sq Mean Sq F value Pr(>F)
ondgr_bw         3  78032 26010.7  1.8972 0.1583
gr_bem           2   2508  1253.8  0.0915 0.9129
blok             1   1803  1802.7  0.1315 0.7202
ondgr_bw:gr_bem  6  27309  4551.6  0.3320 0.9131
Residuals       23 315328 13709.9               


    Shapiro-Wilk normality test

data:  resid(md)
W = 0.97611, p-value = 0.6134
$emmeans
 ondgr_bw gr_bem        emmean   SE df lower.CL upper.CL
 Ref      Fodder radish    873 67.6 23      733     1013
 LB       Fodder radish    847 67.6 23      707      987
 SB       Fodder radish    729 67.6 23      589      869
 SS       Fodder radish    872 67.6 23      732     1012
 Ref      Black oats       896 67.6 23      756     1036
 LB       Black oats       832 67.6 23      692      972
 SB       Black oats       781 67.6 23      641      921
 SS       Black oats       845 67.6 23      705      985
 Ref      Tall fescue      868 67.6 23      728     1008
 LB       Tall fescue      739 67.6 23      599      879
 SB       Tall fescue      783 67.6 23      643      923
 SS       Tall fescue      884 67.6 23      744     1024

Confidence level used: 0.95 

$contrasts
 contrast                             estimate   SE df t.ratio p.value
 Ref Fodder radish - LB Fodder radish    26.67 95.6 23   0.279  1.0000
 Ref Fodder radish - SB Fodder radish   144.00 95.6 23   1.506  0.9241
 Ref Fodder radish - SS Fodder radish     1.33 95.6 23   0.014  1.0000
 Ref Fodder radish - Ref Black oats     -22.67 95.6 23  -0.237  1.0000
 Ref Fodder radish - LB Black oats       41.33 95.6 23   0.432  1.0000
 Ref Fodder radish - SB Black oats       92.00 95.6 23   0.962  0.9972
 Ref Fodder radish - SS Black oats       28.00 95.6 23   0.293  1.0000
 Ref Fodder radish - Ref Tall fescue      5.33 95.6 23   0.056  1.0000
 Ref Fodder radish - LB Tall fescue     134.67 95.6 23   1.409  0.9500
 Ref Fodder radish - SB Tall fescue      90.67 95.6 23   0.948  0.9975
 Ref Fodder radish - SS Tall fescue     -10.67 95.6 23  -0.112  1.0000
 LB Fodder radish - SB Fodder radish    117.33 95.6 23   1.227  0.9807
 LB Fodder radish - SS Fodder radish    -25.33 95.6 23  -0.265  1.0000
 LB Fodder radish - Ref Black oats      -49.33 95.6 23  -0.516  1.0000
 LB Fodder radish - LB Black oats        14.67 95.6 23   0.153  1.0000
 LB Fodder radish - SB Black oats        65.33 95.6 23   0.683  0.9999
 LB Fodder radish - SS Black oats         1.33 95.6 23   0.014  1.0000
 LB Fodder radish - Ref Tall fescue     -21.33 95.6 23  -0.223  1.0000
 LB Fodder radish - LB Tall fescue      108.00 95.6 23   1.130  0.9896
 LB Fodder radish - SB Tall fescue       64.00 95.6 23   0.669  0.9999
 LB Fodder radish - SS Tall fescue      -37.33 95.6 23  -0.391  1.0000
 SB Fodder radish - SS Fodder radish   -142.67 95.6 23  -1.492  0.9282
 SB Fodder radish - Ref Black oats     -166.67 95.6 23  -1.743  0.8307
 SB Fodder radish - LB Black oats      -102.67 95.6 23  -1.074  0.9931
 SB Fodder radish - SB Black oats       -52.00 95.6 23  -0.544  1.0000
 SB Fodder radish - SS Black oats      -116.00 95.6 23  -1.213  0.9822
 SB Fodder radish - Ref Tall fescue    -138.67 95.6 23  -1.450  0.9398
 SB Fodder radish - LB Tall fescue       -9.33 95.6 23  -0.098  1.0000
 SB Fodder radish - SB Tall fescue      -53.33 95.6 23  -0.558  1.0000
 SB Fodder radish - SS Tall fescue     -154.67 95.6 23  -1.618  0.8854
 SS Fodder radish - Ref Black oats      -24.00 95.6 23  -0.251  1.0000
 SS Fodder radish - LB Black oats        40.00 95.6 23   0.418  1.0000
 SS Fodder radish - SB Black oats        90.67 95.6 23   0.948  0.9975
 SS Fodder radish - SS Black oats        26.67 95.6 23   0.279  1.0000
 SS Fodder radish - Ref Tall fescue       4.00 95.6 23   0.042  1.0000
 SS Fodder radish - LB Tall fescue      133.33 95.6 23   1.395  0.9531
 SS Fodder radish - SB Tall fescue       89.33 95.6 23   0.934  0.9978
 SS Fodder radish - SS Tall fescue      -12.00 95.6 23  -0.126  1.0000
 Ref Black oats - LB Black oats          64.00 95.6 23   0.669  0.9999
 Ref Black oats - SB Black oats         114.67 95.6 23   1.199  0.9837
 Ref Black oats - SS Black oats          50.67 95.6 23   0.530  1.0000
 Ref Black oats - Ref Tall fescue        28.00 95.6 23   0.293  1.0000
 Ref Black oats - LB Tall fescue        157.33 95.6 23   1.646  0.8743
 Ref Black oats - SB Tall fescue        113.33 95.6 23   1.185  0.9850
 Ref Black oats - SS Tall fescue         12.00 95.6 23   0.126  1.0000
 LB Black oats - SB Black oats           50.67 95.6 23   0.530  1.0000
 LB Black oats - SS Black oats          -13.33 95.6 23  -0.139  1.0000
 LB Black oats - Ref Tall fescue        -36.00 95.6 23  -0.377  1.0000
 LB Black oats - LB Tall fescue          93.33 95.6 23   0.976  0.9968
 LB Black oats - SB Tall fescue          49.33 95.6 23   0.516  1.0000
 LB Black oats - SS Tall fescue         -52.00 95.6 23  -0.544  1.0000
 SB Black oats - SS Black oats          -64.00 95.6 23  -0.669  0.9999
 SB Black oats - Ref Tall fescue        -86.67 95.6 23  -0.907  0.9983
 SB Black oats - LB Tall fescue          42.67 95.6 23   0.446  1.0000
 SB Black oats - SB Tall fescue          -1.33 95.6 23  -0.014  1.0000
 SB Black oats - SS Tall fescue        -102.67 95.6 23  -1.074  0.9931
 SS Black oats - Ref Tall fescue        -22.67 95.6 23  -0.237  1.0000
 SS Black oats - LB Tall fescue         106.67 95.6 23   1.116  0.9906
 SS Black oats - SB Tall fescue          62.67 95.6 23   0.655  0.9999
 SS Black oats - SS Tall fescue         -38.67 95.6 23  -0.404  1.0000
 Ref Tall fescue - LB Tall fescue       129.33 95.6 23   1.353  0.9617
 Ref Tall fescue - SB Tall fescue        85.33 95.6 23   0.893  0.9985
 Ref Tall fescue - SS Tall fescue       -16.00 95.6 23  -0.167  1.0000
 LB Tall fescue - SB Tall fescue        -44.00 95.6 23  -0.460  1.0000
 LB Tall fescue - SS Tall fescue       -145.33 95.6 23  -1.520  0.9198
 SB Tall fescue - SS Tall fescue       -101.33 95.6 23  -1.060  0.9937

P value adjustment: tukey method for comparing a family of 12 estimates 

Belowground biomass

                
                 Fodder radish Black oats Tall fescue
  Ref                        3          3           3
  Compost                    0          0           0
  LB                         3          3           3
  LB extensive               0          0           0
  LB Sand                    0          0           0
  SB                         3          3           3
  SS                         3          3           3
  SS Caterpillar             0          0           0


Call:
lm(formula = droge_stof_kg_ha ~ ondgr_bw * gr_bem + blok, data = dataset_below)

Coefficients:
                 (Intercept)                    ondgr_bwLB  
                      70.167                        -4.000  
                  ondgr_bwSB                    ondgr_bwSS  
                       9.333                         5.333  
            gr_bemBlack oats             gr_bemTall fescue  
                      -2.667                       -26.333  
                        blok   ondgr_bwLB:gr_bemBlack oats  
                       3.583                        16.000  
 ondgr_bwSB:gr_bemBlack oats   ondgr_bwSS:gr_bemBlack oats  
                     -28.000                         2.667  
ondgr_bwLB:gr_bemTall fescue  ondgr_bwSB:gr_bemTall fescue  
                      38.333                        -6.667  
ondgr_bwSS:gr_bemTall fescue  
                      23.667  
Analysis of Variance Table

Response: droge_stof_kg_ha
                Df  Sum Sq Mean Sq F value Pr(>F)
ondgr_bw         3  2107.7  702.56  1.3978 0.2688
gr_bem           2   950.0  475.00  0.9451 0.4032
blok             1   308.2  308.17  0.6131 0.4416
ondgr_bw:gr_bem  6  2683.3  447.22  0.8898 0.5184
Residuals       23 11559.8  502.60               


    Shapiro-Wilk normality test

data:  resid(md)
W = 0.93612, p-value = 0.03851
$emmeans
 ondgr_bw gr_bem        emmean   SE df lower.CL upper.CL
 Ref      Fodder radish   77.3 12.9 23     50.6    104.1
 LB       Fodder radish   73.3 12.9 23     46.6    100.1
 SB       Fodder radish   86.7 12.9 23     59.9    113.4
 SS       Fodder radish   82.7 12.9 23     55.9    109.4
 Ref      Black oats      74.7 12.9 23     47.9    101.4
 LB       Black oats      86.7 12.9 23     59.9    113.4
 SB       Black oats      56.0 12.9 23     29.2     82.8
 SS       Black oats      82.7 12.9 23     55.9    109.4
 Ref      Tall fescue     51.0 12.9 23     24.2     77.8
 LB       Tall fescue     85.3 12.9 23     58.6    112.1
 SB       Tall fescue     53.7 12.9 23     26.9     80.4
 SS       Tall fescue     80.0 12.9 23     53.2    106.8

Confidence level used: 0.95 

$contrasts
 contrast                             estimate   SE df t.ratio p.value
 Ref Fodder radish - LB Fodder radish     4.00 18.3 23   0.219  1.0000
 Ref Fodder radish - SB Fodder radish    -9.33 18.3 23  -0.510  1.0000
 Ref Fodder radish - SS Fodder radish    -5.33 18.3 23  -0.291  1.0000
 Ref Fodder radish - Ref Black oats       2.67 18.3 23   0.146  1.0000
 Ref Fodder radish - LB Black oats       -9.33 18.3 23  -0.510  1.0000
 Ref Fodder radish - SB Black oats       21.33 18.3 23   1.165  0.9868
 Ref Fodder radish - SS Black oats       -5.33 18.3 23  -0.291  1.0000
 Ref Fodder radish - Ref Tall fescue     26.33 18.3 23   1.439  0.9428
 Ref Fodder radish - LB Tall fescue      -8.00 18.3 23  -0.437  1.0000
 Ref Fodder radish - SB Tall fescue      23.67 18.3 23   1.293  0.9719
 Ref Fodder radish - SS Tall fescue      -2.67 18.3 23  -0.146  1.0000
 LB Fodder radish - SB Fodder radish    -13.33 18.3 23  -0.728  0.9998
 LB Fodder radish - SS Fodder radish     -9.33 18.3 23  -0.510  1.0000
 LB Fodder radish - Ref Black oats       -1.33 18.3 23  -0.073  1.0000
 LB Fodder radish - LB Black oats       -13.33 18.3 23  -0.728  0.9998
 LB Fodder radish - SB Black oats        17.33 18.3 23   0.947  0.9976
 LB Fodder radish - SS Black oats        -9.33 18.3 23  -0.510  1.0000
 LB Fodder radish - Ref Tall fescue      22.33 18.3 23   1.220  0.9815
 LB Fodder radish - LB Tall fescue      -12.00 18.3 23  -0.656  0.9999
 LB Fodder radish - SB Tall fescue       19.67 18.3 23   1.074  0.9930
 LB Fodder radish - SS Tall fescue       -6.67 18.3 23  -0.364  1.0000
 SB Fodder radish - SS Fodder radish      4.00 18.3 23   0.219  1.0000
 SB Fodder radish - Ref Black oats       12.00 18.3 23   0.656  0.9999
 SB Fodder radish - LB Black oats         0.00 18.3 23   0.000  1.0000
 SB Fodder radish - SB Black oats        30.67 18.3 23   1.675  0.8618
 SB Fodder radish - SS Black oats         4.00 18.3 23   0.219  1.0000
 SB Fodder radish - Ref Tall fescue      35.67 18.3 23   1.948  0.7200
 SB Fodder radish - LB Tall fescue        1.33 18.3 23   0.073  1.0000
 SB Fodder radish - SB Tall fescue       33.00 18.3 23   1.803  0.8010
 SB Fodder radish - SS Tall fescue        6.67 18.3 23   0.364  1.0000
 SS Fodder radish - Ref Black oats        8.00 18.3 23   0.437  1.0000
 SS Fodder radish - LB Black oats        -4.00 18.3 23  -0.219  1.0000
 SS Fodder radish - SB Black oats        26.67 18.3 23   1.457  0.9381
 SS Fodder radish - SS Black oats         0.00 18.3 23   0.000  1.0000
 SS Fodder radish - Ref Tall fescue      31.67 18.3 23   1.730  0.8371
 SS Fodder radish - LB Tall fescue       -2.67 18.3 23  -0.146  1.0000
 SS Fodder radish - SB Tall fescue       29.00 18.3 23   1.584  0.8981
 SS Fodder radish - SS Tall fescue        2.67 18.3 23   0.146  1.0000
 Ref Black oats - LB Black oats         -12.00 18.3 23  -0.656  0.9999
 Ref Black oats - SB Black oats          18.67 18.3 23   1.020  0.9954
 Ref Black oats - SS Black oats          -8.00 18.3 23  -0.437  1.0000
 Ref Black oats - Ref Tall fescue        23.67 18.3 23   1.293  0.9719
 Ref Black oats - LB Tall fescue        -10.67 18.3 23  -0.583  1.0000
 Ref Black oats - SB Tall fescue         21.00 18.3 23   1.147  0.9883
 Ref Black oats - SS Tall fescue         -5.33 18.3 23  -0.291  1.0000
 LB Black oats - SB Black oats           30.67 18.3 23   1.675  0.8618
 LB Black oats - SS Black oats            4.00 18.3 23   0.219  1.0000
 LB Black oats - Ref Tall fescue         35.67 18.3 23   1.948  0.7200
 LB Black oats - LB Tall fescue           1.33 18.3 23   0.073  1.0000
 LB Black oats - SB Tall fescue          33.00 18.3 23   1.803  0.8010
 LB Black oats - SS Tall fescue           6.67 18.3 23   0.364  1.0000
 SB Black oats - SS Black oats          -26.67 18.3 23  -1.457  0.9381
 SB Black oats - Ref Tall fescue          5.00 18.3 23   0.273  1.0000
 SB Black oats - LB Tall fescue         -29.33 18.3 23  -1.602  0.8913
 SB Black oats - SB Tall fescue           2.33 18.3 23   0.127  1.0000
 SB Black oats - SS Tall fescue         -24.00 18.3 23  -1.311  0.9690
 SS Black oats - Ref Tall fescue         31.67 18.3 23   1.730  0.8371
 SS Black oats - LB Tall fescue          -2.67 18.3 23  -0.146  1.0000
 SS Black oats - SB Tall fescue          29.00 18.3 23   1.584  0.8981
 SS Black oats - SS Tall fescue           2.67 18.3 23   0.146  1.0000
 Ref Tall fescue - LB Tall fescue       -34.33 18.3 23  -1.876  0.7618
 Ref Tall fescue - SB Tall fescue        -2.67 18.3 23  -0.146  1.0000
 Ref Tall fescue - SS Tall fescue       -29.00 18.3 23  -1.584  0.8981
 LB Tall fescue - SB Tall fescue         31.67 18.3 23   1.730  0.8371
 LB Tall fescue - SS Tall fescue          5.33 18.3 23   0.291  1.0000
 SB Tall fescue - SS Tall fescue        -26.33 18.3 23  -1.439  0.9428

P value adjustment: tukey method for comparing a family of 12 estimates 

Aboveground biomass, extra fields


           Ref        Compost             LB   LB extensive        LB Sand 
             2              2              0              2              2 
            SB             SS SS Caterpillar 
             0              0              3 

Belowground biomass, extra fields


           Ref        Compost             LB   LB extensive        LB Sand 
             2              2              0              2              2 
            SB             SS SS Caterpillar 
             0              0              3