*2.3. Weight Loss*

The weight of the cowpeas was assayed during refrigerated storage. The percent weight loss was calculated by weighing the cowpeas every 3 days.

### *2.4. Decay Index*

The decay index was divided into five grades as follows: grade 0, no decay; grade 1, decayed area < 10%; grade 2, decayed area of 10%–25%; grade 3, decayed area of 25%–50%; and grade 4, decayed area > 50%. Decay index (%) = 100 × ∑[(decay grade × number of cowpeas in the grade)]/[(number of the highest grade × total number of cowpeas)] [12].

### *2.5. Rust Spot Index*

The rust spot index was divided into five grades as follows: grade 0, no rust spots; grade 1, rust spots of 1%–25%; grade 2, rust spots of 26%–50%; grade 3, rust spots of 51%–75%; and grade 4, rust spots of 76% to 100%. Rust spot index (%) =100 × ∑[(rust spot grade × number of cowpeas in the grade)]/[(number of the highest grade × total number of cowpeas)] [12].
