Abstract:

The effects of two kinds of bio-pesticide, osthole and spinosyn on the storage quality of wheat were studied with
one-way analysis of variance (ANOVA) and fuzzy comprehensive evaluation. The fuzzy comprehensive evaluation model
was established to evaluate the changes in wheat storage quality. During wheat storage for four and eight months, an index
matrix of fuzzy comprehensive evaluation model was constructed. First of all, the index matrix was nondimensionalized with
range transformation and linear scaling transformation, and then the weight vector was determined based on angle cosine.
Finally, the fuzzy comprehensive evaluation value was achieved by using the Paǔta test method. In this case, the model was
of practical applicability. The results demonstrated that comprehensive evaluation values of H and F for 4- and 8-month
storage respectively were less than 2 s (2 s is equivalent to a significant level). The quality of wheat in the presence of 0.50,
0.75 and 1.00 mg/kg of 1.0% osthole powder or 0.50, 1.00 and 1.50 mg/kg of 0.5% spinosyn powder was not significantly
different from the control during storage for eight months. In a conclusion, osthole and spinosyn are safe for the storage
quality of wheat and the fuzzy comprehensive evaluation model could be considered as an important approach to understand
quality preservation of grains during storage.

Key words: fuzzy comprehensive evaluation, osthole, spinosyn, wheat, storage quality