|Table of Contents|

Study on Biological Characteristics of Leaf Spot Bacteria of Zizyphus jujuba in Xinjiang and Fungicide Screening in Laboratory(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2013年08期
Page:
132-135
Research Field:
Publishing date:

Info

Title:
Study on Biological Characteristics of Leaf Spot Bacteria of Zizyphus jujuba in Xinjiang and Fungicide Screening in Laboratory
Author(s):
WANG Zhi-xia; WANG Bin; ZHAO Si-feng; SUN Jie; HE Li; LIU Wen-kui
Key Laboratory of Prevention and Control for Oasis Crop Diseases，College of Agronomy，Shihezi University，Shihezi，Xinjiang 832003
Keywords:
Zizyphus jujuba; leaf spot disease; Alternaria; biological characteristics; fungicide screening
PACS:
S 436.62
DOI:
-
Abstract:
Taking two strains of leaf spot bacteria of Zizyphus jujuba Alternaria tenuissima and A.alternata as materials, the effect of temperature and pH on the growth of Alternaria tenuissima and A.alternata were studied using mycelia growth speed method.The inhibition methods of mycelia growth and spore germination were tested to screen the best fungicide from 5 fungicides，in order to definite the biological characteristics and screen effective fungicides against the leaf spot pathogen of Zizyphus jujuba.The results showed that the optimum temperature for mycelial growth of he pathogen was 25~30℃ and the optimum pH ranged from 7 to 9.The 70% Mancozeb could significantly inhibit mycelium growth of the pathogen，the EC50 values were 0.053 and 0.054 g/L，and could greatly depress spore germination with inhibition，the EC50 values were 0.021 and 0.019 g/L.The 70% Mancozeb will be preferred to control leaf spot disease of Zizyphus jujube in Xinjiang.

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Last Update: 2014-08-25