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Table 1 Classification of PBSA and PBS film-degrading fungi on agarose plate based on degradation rates

From: Degradation of biodegradable plastic mulch films in soil environment by phylloplane fungi isolated from gramineous plants

Class-indexa I II III IV V
PBSA 12 19 8 12 4
PBS 18 29 5 2 1
  1. aClass-index: I: 0% degradation, no change in film color; II: less than 25% degradation (breakdown of film periphery), loss of film gloss, or thinning of film; III: 26% to 50% degradation; IV: 51% to 90% degradation; and V: over 91% degradation.