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秕杷灰斑病两种病原菌Pestalotia eriobotrifolia和p.adusta的生物学特性基本相似,它们都能利用玉米粉、葡萄糖,果胶及纤维素作碳源,利用无机氮及有机氮作氮源。在黄豆葡萄琼琼脂及PDA培养基上生长良好。菌丝的生长适宜温度为20～30℃,最适为25℃:适宜pH6左右,分生孢子萌发的最低温度10℃左右,适宜的温度20～30℃,在相同条件下,P.eriobotrifolia的生长速度比P.adusta快,P.eriobotrifolia对离体果实的致病力比P.adusta要弱,而对叶片的致病力却是相反,对果实的致病性与它们分泌果胶酶的特性有关,在果园中,于病害发生初期起,连续三次喷洒50％多菌灵可湿性粉剂1000倍液,有良好的防治效果。
Pestalotia eriobotrifolia and p.adusta have similar biological characteristics. Both of them can utilize corn flour, glucose, pectin and cellulose as carbon source, and use inorganic nitrogen and organic nitrogen as nitrogen source. Soybean agar agar and PDA medium grew well. The suitable temperature for mycelium growth is 20-30 ℃, the optimum is 25 ℃: suitable pH6 or so, the lowest germination temperature of conidia is about 10 ℃, and the optimum temperature is 20-30 ℃. Under the same conditions, the growth of P.eriobotrifolia Faster growth than P. adusta P.eriobotrifolia pathogenicity in vitro fruit than P.adusta weaker, but the virulence of the leaves is the opposite, the pathogenicity of the fruit and their secretion of pectinase Characteristics, in the orchard, in the early stages of disease, spraying three times in succession 50% carbendazim WP 1000 times, have a good control effect.