Economic aspects of mulching films

The use of mulching films presents the grower with an additional expense and unless this extra cost gives an adequate return it will not be used. Huang [5] and Yang [26] have calculated the ratio of extra cost to increased income, and this is shown in Table 10.8 for six crops. 

It can be seen from Table 10.8 that there is good cause for the grower to use plastic mulch. The extra cost involved in the use of photodegradable film, even 

---