Yam variety

Jute sack

Polypropylene sheet

Straw

Control

Pona

0.018 ± 0.012a

0.008 ± 0.008a

0.007 ± 0.007a

0.038 ± 0.038a

Lariboko

0.016 ± 0.005a

0.005 ± 0.005a

0.018 ± 0.014a

0.069 ± 0.058a

Dente

0.011 ± 0.007a

0.019 ± 0.059a

0.027 ± 0.027a

0.004 ± 0.004a

Mutwumudoo

0.012 ± 0.001a

0.084 ± 0.084a

0.015 ± 0.015a

0.021 ± 0.012a

Serwah

0.009 ± 0.009a

0.003 ± 0.003a

0.005 ± 0.004a

0.014 ± 0.011a

Matches

0.011 ± 0.009a

0.026 ± 0.006a

0.002 ± 0.002a

0.003 ± 0.003a

Akaba

0.013 ± 0.010a

0.007 ± 0.007a

0.008 ± 0.008a

0.014 ± 0.014a