Fungistatic Effects of Nano-Cu_2O Suspension with Different Concentrations against Five Plant Pathogenic Fungi

In the paper, we studied the fungistatic effects of nano-Cu2O suspension with different concentrations against five plant pathogenic fungi Alternaria solani, Phytophthora capsici, Fusarium oxysporum, Colletrichum orbiculare and Sclerotinia sclerotiorum. The results showed that, nano-Cu2O suspension had significant inhibitory effects on the five plant pathogenic fungi, and the fungistatic effects were positively correlated with the concentration of nano-Cu2O suspension. Nano-Cu2O suspension had significant inhibitory effect against P. capsici than against those of the other four plant pathogenic fungi. When the concentration of nano-Cu2O suspension was 100 mg/kg, the fungistatic efficiency against P. capsici was higher than 95%. When the concentration of nano-Cu2O was 400 mg/kg, the fungistatic efficiencies were higher than 80% aginst A. solani, F. oxysporum, C. orbiculare and S. sclerotiorum.