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Role of plant growth promoting microbes in the control of fungal foliar diseases of tomato under protected cultivation
Egyptian Journal of Biological Pest Control ( IF 2.1 ) Pub Date : 2022-09-03 , DOI: 10.1186/s41938-022-00606-7
Gurudatt M. Hegde , Lokanath H. Malligawad , M. N. Sreenivasa , Bimal K. Chetri

This study was conducted to assess the effectiveness of plant growth-promoting microbes on the foliar disease of organic tomatoes under protected cultivation. The biological control agents, viz., Trichoderma harzianum (T. harzianum), Bacillus subtilis (B. subtilis), and Pseudomonas fluorescens (P. fluorescens), used seed treatment, seedling dip, and spray separately in sequence with the plot size of (2.5 × 1 m) and the spacing of (45 × 60 cm). The observations on percentage disease yield and plant growth parameters were assessed, and economics was calculated. Tukey's HSD at p < 0.05 was used to compare all means among treatments. The results showed that seed treatment with B. subtilis at 5 g, followed by a seedling dip with B. subtilis at 10 g l−1 and spray with B. subtilis at 5 g l−1 four times at 15 days intervals significantly (p < 0.05) reduced the tomato diseases early blight, septoria leaf spot, and powdery mildew (T2). These results were comparable to seed treated with P. fluorescens at 5 g l−1, followed by a seedling dipping with P. fluorescens at 10 g l−1 and spraying with P. fluorescens at 10 g l−1 four times at 15-day intervals (T3). Except for T1, plant parameters, yields, net returns, and benefits were significantly higher (p < 0.05) than the untreated control (T8). The applications of B. subtilis and P. fluorescens as plant growth-promoting microbes had a considerable scope for managing fungal foliar (multiple) diseases and achieving sustainable yields under the protected cultivation of organically grown tomatoes.

中文翻译:

植物促生微生物在保护栽培番茄叶面真菌病害防治中的作用

本研究旨在评估植物生长促进微生物对保护栽培有机番茄叶面病害的有效性。生物防治剂哈氏木霉(T. harzianum)、枯草芽孢杆菌(B. subtilis)、荧光假单胞菌(P. fluorescens)依次采用种子处理、浸苗、喷施,小区面积分别为(2.5 × 1 m) 和 (45 × 60 cm) 的间距。评估了对疾病产量百分比和植物生长参数的观察结果,并计算了经济性。Tukey's HSD p < 0.05 用于比较处理之间的所有平均值。结果表明,用 5 g 枯草芽孢杆菌进行种子处理,然后用 10 g l-1 的 B. subtilis 浸苗,每隔 15 天用 5 g l-1 的 B. subtilis 喷洒 4 次显着(p < 0 . 05) 减少番茄病害早疫病、斑叶斑病和白粉病(T2)。这些结果与用 5 g l-1 的 P. fluorescens 处理的种子相当,然后用 10 g l-1 的 P. fluorescens 浸种幼苗并以 10 g l-1 的 P. fluorescens 喷洒 4 次,间隔 15 天( T3)。除 T1 外,植物参数、产量、净收益和效益显着高于未处理对照 (T8) (p < 0.05)。B. subtilis 和 P. fluorescens 作为植物促生微生物的应用,在有机种植番茄的保护性栽培下,在管理叶面真菌(多种)病害和实现可持续产量方面具有相当大的空间。荧光假单胞菌 5 g l-1,然后以 10 g l-1 的荧光假单胞菌浸渍幼苗并以 10 g l-1 的荧光假单胞菌喷洒 4 次,间隔 15 天(T3)。除 T1 外,植物参数、产量、净收益和效益显着高于未处理对照 (T8) (p < 0.05)。B. subtilis 和 P. fluorescens 作为植物促生微生物的应用,在有机种植番茄的保护性栽培下,在管理叶面真菌(多种)病害和实现可持续产量方面具有相当大的空间。荧光假单胞菌 5 g l-1,然后以 10 g l-1 的荧光假单胞菌浸渍幼苗并以 10 g l-1 的荧光假单胞菌喷洒 4 次,间隔 15 天(T3)。除 T1 外,植物参数、产量、净收益和效益显着高于未处理对照 (T8) (p < 0.05)。B. subtilis 和 P. fluorescens 作为植物促生微生物的应用,在有机种植番茄的保护性栽培下,在管理叶面真菌(多种)病害和实现可持续产量方面具有相当大的空间。05) 比未处理的对照 (T8)。B. subtilis 和 P. fluorescens 作为植物促生微生物的应用,在有机种植番茄的保护性栽培下,在管理叶面真菌(多种)病害和实现可持续产量方面具有相当大的空间。05) 比未处理的对照 (T8)。B. subtilis 和 P. fluorescens 作为植物促生微生物的应用,在有机种植番茄的保护性栽培下,在管理叶面真菌(多种)病害和实现可持续产量方面具有相当大的空间。
更新日期:2022-09-03
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