有效的木霉、假单胞菌和丛枝菌根联合施用可减少棉花土传疾病,促进棉花生长

IF 2.1 3区 农林科学 Q1 ENTOMOLOGY Egyptian Journal of Biological Pest Control Pub Date : 2023-09-18 DOI:10.1186/s41938-023-00739-3
Satish Kumar Sain, Hanwant Dewasi, Amarpreet Singh
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引用次数: 0

摘要

摘要背景棉花最常见的土传病害是根腐病和枯萎病,分别由枯丝核菌(Rhizoctonia solani (Taub) Butler)和枯萎菌(Fusarium oxysporum f.p . vasinfetum)引起。这两种病害显著地降低了植株的林分和产量。在极端情况下,使用杀菌剂不能对这些疾病提供令人满意的管理,而且还污染环境。研究了2017-18年和2018-19年生物防治剂、药剂组合及杀菌剂对棉和木棉品种CSH-3129和CICR-3根腐病管理及植株生长的影响。结果6株木霉菌株中,粗曲霉(Th-11)对茄枯霉和尖孢霉的菌丝生长抑制效果最好(64.4 ~ 100%);曲霉(Th-11, c.f.u 2 × 10 8 /g) +荧光假单胞菌(c.f.u 2 × 10 8 /g) +丛枝菌根真菌(AMF)联合种子处理;处理15 d后,CSH-3129和CICR-3的植株活力指数最高,分别为890.9%和393.5%。播后90 d,曲霉(Th-11) +荧光假单孢菌+ AMF组合种子处理后,曲霉(Th-11) +荧光假孢菌在CICR-3和CSH 3129的疾病进展曲线下面积最小。2年的综合结果表明,在田间条件下,曲霉(Th-11) +荧光霉+ AMF组合种子处理对CICR-3和CSH-3129品种的根腐病发病率分别降低了51%和57.5%。结论在田间条件下,10 g/kg + 10 g/kg荧光p + 20 g/kg AMF配施效果最好的曲霉(Th-11)菌种可有效防治播后60 d的根腐病和枯萎病,促进植株生长。然而,这些生物防治剂对-à-vis病原菌接种负荷的应用率必须进一步评估,以提高和长期效果。
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Combined application of effective Trichoderma, Pseudomonas and arbuscular mycorrhiza spp. reduced soil-borne diseases and boosted growth in cotton
Abstract Background The most common soil-borne diseases in cotton are root rot and wilt, which are caused by Rhizoctonia solani (Taub) Butler and Fusarium oxysporum f. sp. vasinfectum , respectively. These two diseases significantly reduce plant stand and production. Under extreme circumstances, the application of fungicides does not provide satisfactory management of these diseases and also pollutes the environment. The effect of biocontrol agents, their combinations and fungicides on root rot and wilt management and plant growth in Gossypium hirsutum and G. arboreum cultivars CSH-3129 and CICR-3 were studied during 2017–18 and 2018–19. Results Out of six isolates of Trichoderma spp., T. asperellum (Th-11) was the most effective for inhibiting the mycelial growth of R. solani and F. oxysporum f. sp. vasinfectum (64.4–100%). The combined seed treatment of T. asperellum (Th-11, c.f.u. 2 × 10 8 /g) + Pseudomonas fluorescens (c.f.u. 2 × 10 8 /g) + arbuscular mycorrhizal fungi (AMF; 1200 IP/g) resulted in the highest plant vigour index in CSH-3129 (890.9%) and CICR-3 cultivars (393.5%) at 15 days after treatment. Ninety days after sowing, the combined seed treatments of T. asperellum (Th-11) + P. fluorescens + AMF followed by T. asperellum (Th-11) + P. fluorescens showed the lowest area under the disease progress curve in CICR-3 and CSH 3129. Two-year pooled results indicated that the combined seed treatment with T. asperellum (Th-11) + P. fluorescens + AMF reduced the root rot disease by 51 and 57.5% in CICR-3 and CSH-3129 cultivars, respectively, under field conditions. Conclusion The present investigation suggested that combined application of the most effective strains of T. asperellum (Th-11) @10 g/kg + P. fluorescens @10 g/kg and AMF @20 g/kg can effectively manage root rot and wilt diseases up to 60 days after sowing and enhance plant growth under field conditions. However, the application rates of these biocontrol agents vis-à-vis load of pathogen inoculum in the field must be further evaluated for improved and long-term effects.
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来源期刊
CiteScore
4.90
自引率
16.70%
发文量
128
审稿时长
>12 weeks
期刊介绍: The Egyptian Journal of Biological Pest Control is a periodic scientific journal published by the Egyptian Society for Biological Control of Pests (ESBCP) in collaboration with SpringerNature. The journal aims to publish internationally peer-reviewed, high-quality research articles in the field of biological and integrated pest control (non-chemical control). The journal publishes review articles, original papers, conference reports, book reviews, editorials, laboratory reports, technical notes and short communications.
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