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Table 3 Effects of contour ridge tillage on the production of sorghum varieties in Cinzana commune, Mali

From: Optimizing yield of improved varieties of millet and sorghum under highly variable rainfall conditions using contour ridges in Cinzana, Mali

   

Mean values and comparisons

Year

Technique

Varieties

Variety

Technique

Variety × technique

a. Grain yield (kg ha−1)

     

2012

CRT

Seguifa

621a

a

 
  

Jacumbe (local)

381b

  
 

Control

Seguifa

545a

a

 
  

Jacumbe (local)

297b

  

SE

  

43.5

  

Probability

  

0.01

0.56

0.97

CRT yield increase

   

96

 

2013

CRT

Jacumbe(local)

1174a

a

 
  

Seguifa

1231a

  
  

Tiandougou

1600a

  
 

Control

Jacumbe(local)

677b

b

 
  

Seguifa

704b

  
  

Tiandougou

786b

  

SE

  

287

  

Probability

  

0.39

0.04

0.62

CRT yield increase

   

613

 

2014

CRT

Seguifa

1957b

a

 
  

CSM 219

1353c

  
  

Sangatigi

2300a

  
  

Kenikeni (local)

1134cd

  
 

Control

Seguifa

1200cd

b

 
  

CSM 219

928de

  
  

Sangatigi

1333c

  
  

Kenikeni (local)

819e

  

SE

  

81.6

  

Probability

  

0.001

0.001

0.001

CRT yield increase

   

616

 
   

Mean values and comparisons

Year

Technique

Varieties

Variety

Technique

Variety × technique

b. Straw dry biomass (kg ha−1)

     

2012

CRT

Jacumbe

3524a

a

 
  

Seguifa (local)

6857a

  
 

Control

Jacumbe

3943a

a

 
  

Seguifa (local)

5000a

  

SE

  

1407

  

Probability

  

0.08

0.49

0.29

CRT yield increase

   

−167

 

2013

CRT

Jacumbe

5057a

a

 
  

Seguifa (local)

4457a

  
  

Tiandougou

4143a

  
 

Control

Jacumbe

3314a

a

 
  

Seguifa(local)

3429a

  
  

Tiandougou

3486a

  

SE

  

958

  

Probability

  

0.92

0.06

0.88

CRT yield increase

   

1142

 

2014

CRT

Seguifa

10452a

a

 
  

CSM 219

8007a

  
  

Sangatigi

9543a

  
  

Kenikeni (local)

7558a

  
 

Control

Seguifa

6027b

b

 
  

CSM 219

4937b

  
  

Sangatigi

5873b

  
  

Kenikeni (local)

5273b

  

SE

  

445

  

Probability

  

<0.001

<0.001

0.97

CRT yield increase

   

3363

 
  1. NB For a given year, values with different letters are statistically different at P = 0.05. Column means represent tillage techniques and row means the varieties. SE standard error of the mean