泰米尔纳德邦南部地区香蕉枯萎病调查、鉴定及防治

Q4 Agricultural and Biological Sciences Journal of Biological Control Pub Date : 2022-12-14 DOI:10.18311/jbc/2022/30449
S. Vijayasanthi, R. Akila, M. Ayyandurai, R. Kannan
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引用次数: 0

摘要

在泰米尔纳德邦,Thoothukudi地区的香蕉产量排名第二,特别是Thoothukudi和Tirunelveli地区的Tamirabarani地区以生产各种香蕉品种而闻名,如Rasthali、Andhra Kozhi、Karpooravalli、nepopovan、Poovan、Peyan和Chakkai。在这些品种中,由于枯萎病的发病率,Rasthali的种植面临50-60%的产量损失。由于农民连续6-7年实行复食,增加了病原菌的接种量,使大蕉屈服于尖孢镰刀菌(Fusarium oxysporum f. sp. cubense, Foc)。对香蕉枯萎病病原菌Trichoderma sp. Tsp1(ALG)的不同处理进行了研究,结果表明,与对照相比,Foc菌丝生长减少幅度最大(72.18%),与荧光假单胞菌1(Pf1)相当。盆栽条件下,Tsp1(ALG)+Pf1+印楝饼组合处理效果较好,可降低80%的青枯病发病率。采用生物防治剂(Trichoderma sp.) +假单胞菌sp. 1 (TNAU)和有机改性剂组成的多方面方法是防治青枯病的最佳管理方法。
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Survey, identification and management of Fusarium wilt of banana in Tamirabarani tract of Southern districts of Tamil Nadu
In Tamil Nadu state, Thoothukudi district ranked second in banana production and especially the Tamirabarani tract of Thoothukudi and Tirunelveli districts are known for the production of various banana cultivars like Rasthali, Andhra Kozhi, Karpooravalli, Neypoovan, Poovan, Peyan and Chakkai. Among these varieties, cultivation of Rasthali faces 50-60% yield loss due to the incidence of Fusarium wilt disease. As the farmers have been practising ratooning for 6-7 year continuously which enhances the inoculum load of the pathogen and make the plantains succumb to Fusarium oxysporum f. sp. cubense (Foc). Studies carried out on different treatments in the management of Fusarium wilt of banana, Trichoderma sp. Tsp1(ALG) showed a maximum reduction of mycelial growth of Foc (72.18%) over control which was on par with Pseudomonas fluorescence 1(Pf1). Under pot culture conditions the combination of three treatments, Tsp1(ALG)+Pf1+ neem cake excelled and showed an 80% reduction of wilt incidence. A multifaceted approach comprising the application of biocontrol agents (Trichoderma sp.) + Pseudomonas sp. 1 (TNAU) and organic amendments was found to be the best management practice in containing the wilt.
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来源期刊
Journal of Biological Control
Journal of Biological Control Agricultural and Biological Sciences-Insect Science
CiteScore
0.50
自引率
0.00%
发文量
10
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