Study on mesh breaking strength of conical lift net before and after usage

Conical lift nets catch kilka fish in Iran. Conical lift nets are usually made of polyamide 6.6 (nylon) with 210D/ 9 number. One of the main problems of fishermen is determining the right time to change fishing nets. Unfortunately, due to lack of data they do not change their nets at the right time. Data were analyses using and The mean values of breaking strength data were compared using one-way ANOVA and Duncan's test. The results showed that there is significant differences between new nets and nets which is used for 10 months (P