Control effect of aerobic composting with avermectin loaded by cyanobacteria on strawberry red spiders
In order to solve the shortcomings of avermectin,such as short efficacy time,cyanobacteria and vinasse were selected as the slow-release carrier and co-solvent of avermectin for composting with the agricultural waste sheep manure and rice husk (6∶1) to explore its control effect on strawberry red spiders.Four organic fertilizer formulas were set up∶avermectin aqueous solution (A),cyanobacteria-avermectin complex (B),vinasse-avermectin complex (C),and cyanobacteria-vinasse-avermectin complex(D),which were added to the composting of sheep manure and rice husk on the 10th,30th and 50th days (denoted as 1,2,3,respectively),respectively.After maturity,the 12 groups of composting products were used for strawberry planting,and the actual control effect of each group against red spiders was evaluated,as well as the safety of avermectin and microcystin residues in the substrate and strawber-ry.The results showed that the control effect of formulas B and D was significantly (P<0.05) superior to that of for-mulas A and C without addition of cyanobacteria.Compared with the other treatments,treatment D3 exhibited the highest control effect of 79.09％ and 71.07％ on April 7th and 14th,2023,respectively.Under the experiment con-ditions,the risk of avermectin and microcystin residues in the substrate and strawberry was low.In conclusion,it was feasible and safe to improve the control effect of avermectin against strawberry red spiders by aerobic composting with cyanobacteria.
万方数据
维普
