
Preparation of Trichoderma harzianum T-102 bactericide and its effects on peanut sheath blight and soil biodiversity
Li-fang ZHANG, Yang CAO, Lan ZHANG
CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2024, Vol. 46 ›› Issue (6) : 1398-1404.
Preparation of Trichoderma harzianum T-102 bactericide and its effects on peanut sheath blight and soil biodiversity
Peanut sheath blight caused by Rhizoctonia solani is an significant soil-borne disease in peanut production, which can seriously threaten the safety of peanut production and quality, and is the main obstacle factor in the sustainable and healthy development of peanut industry. In this study, the isolated Trichoderma harzianum strain T-102 with excellent control efficiency was cultured by submerged fermentation technology. Under the optimal conditions of 150 r/min, 20℃ and the initial inoculation concentration of 7.5%, the water suspension of T. harzianum T-102 with 105 cfu/mL was obtained. In Linyi city, Shandong province and Tangshan city, Hebei province, the water suspension of T. harzianum T-102 exhibited the great effect for controlling peanut sheath blight in the field. After spraying the water suspension of T. harzianum T-102, the disease index of peanut sheath blight was significantly reduced. Moreover, the yield of peanut could be increased by 41.2% and 31.7% in Linyi city and Tangshan city, respectively. In addition, the water suspension treatment could change the structure and composition of microbial communities of peanut rhizosphere, and reduce the abundance of harmful microorganisms. Based on the above characteristics, the water suspension of T. harzianum T-102 is expected to carry out further commercial development and application.
peanut sheath blight / Rhizoctonia solani / Trichoderma / water suspension concentrate / biological control {{custom_keyword}} /
Table 1 The treatments of L9(33) orthogonal test表1 L9(33)正交试验各处理一览表 |
处理 Treatment | 转速 /(r/min) Rotation rate | 温度 /℃ Temperature | 初始接种浓度 /%,V/V Inoculation quantity |
---|---|---|---|
1 | 150 | 18 | 2.0 |
2 | 150 | 20 | 5.0 |
3 | 150 | 22 | 7.0 |
4 | 200 | 18 | 5.0 |
5 | 200 | 20 | 7.0 |
6 | 200 | 22 | 2.0 |
7 | 250 | 18 | 7.0 |
8 | 250 | 20 | 2.0 |
9 | 250 | 22 | 5.0 |
Table 2 Results of orthogonal test表2 正交结果一览表 |
因素 Factor | 转速 Rotation rate | 温度 Temperature | 初始接种浓度 /(V/V) Inoculation quantity | 干重 /(g/L) Dry weight |
---|---|---|---|---|
1 | 150 r/min | 18℃ | 2.0% | 2.893 |
2 | 150 r/min | 20℃ | 5.0% | 4.412 |
3 | 150 r/min | 22℃ | 7.0% | 3.568 |
4 | 200 r/min | 18℃ | 5.0% | 3.398 |
5 | 200 r/min | 20℃ | 7.0% | 4.299 |
6 | 200 r/min | 22℃ | 2.0% | 2.798 |
7 | 250 r/min | 18℃ | 7.0% | 3.390 |
8 | 250 r/min | 20℃ | 2.0% | 3.464 |
9 | 250 r/min | 22℃ | 5.0% | 3.136 |
K1 | 10.874 | 9.683 | 9.156 | |
K2 | 10.496 | 12.176 | 10.948 | |
K3 | 9.992 | 9.504 | 11.259 | |
k1 | 3.625 | 3.228 | 3.052 | |
k2 | 3.499 | 4.059 | 3.649 | |
k3 | 3.331 | 3.168 | 3.753 | |
R | 0.294 | 0.891 | 0.701 | |
F | 65.749** | |||
10.400 | 118.465** | 68.383* |
Table 3 Field control effect of Trichoderma strain T-102表3 哈茨木霉菌株T-102田间防控效果 |
地点 Site | 处理 Treatment | 病情指数 Disease index | 平均值 Mean value | 标准差 Standard deviation | 显著水平 Significant level | P值 P value | ||
---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | ||||||
A | 43.50 | 39.87 | 32.62 | 38.72 | 5.537279 | a | 0.036 | |
B | 29.87 | 31.25 | 34.75 | 31.94 | 2.513505 | b | ||
临沂 Linyi | C | 26.75 | 20.37 | 23.87 | 23.70 | 3.192602 | ab | |
D | 29.12 | 31.00 | 14.00 | 24.71 | 9.320955 | b | ||
E | 37.00 | 29.50 | 28.12 | 31.54 | 4.776788 | ab | ||
F | 19.55 | 28.00 | 27.37 | 24.95 | 4.737374 | b | ||
A | 41.75 | 39.75 | 40.75 | 40.75 | 1.000000 | a | 0.002 | |
B | 45.50 | 31.00 | 37.00 | 37.83 | 7.285831 | ab | ||
唐山 Tangshan | C | 40.50 | 41.75 | 38.75 | 40.16 | 1.506928 | ab | |
D | 38.50 | 33.00 | 30.00 | 33.66 | 4.041452 | bc | ||
E | 29.35 | 25.00 | 29.75 | 27.91 | 2.553592 | c | ||
F | 31.45 | 27.00 | 27.50 | 28.50 | 2.179449 | c |
Table 4 Effects of each treatment on peanut production表4 各处理对花生产量的影响 |
地点 Site | 处理 Treatment | 产量 Yield /(kg/667m2) | 平均值 Mean value | 标准差 Standard deviation | 显著水平 Significant level | P值 P value | ||
---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | ||||||
A | 276.64 | 284.23 | 274.49 | 278.45 | 11.103 | a | 0.102 | |
B | 286.94 | 295.25 | 285.52 | 289.23 | 11.0070 | a | ||
临沂 Linyi | C | 274.63 | 284.58 | 271.76 | 276.99 | 12.7013 | a | |
D | 297.49 | 295.56 | 289.19 | 294.10 | 18.1860 | b | ||
E | 272.26 | 279.08 | 271.24 | 274.19 | 6.40692 | b | ||
F | 292.39 | 299.26 | 312.23 | 301.32 | 5.10020 | c | ||
A | 243.97 | 238.58 | 243.06 | 241.87 | 2.88382 | a | 0.005 | |
B | 249.73 | 241.83 | 243.83 | 245.13 | 4.11048 | a | ||
唐山 Tangshan | C | 242.99 | 242.61 | 247.63 | 244.41 | 2.79620 | a | |
D | 242.92 | 252.02 | 243.62 | 246.19 | 5.06098 | a | ||
E | 249.85 | 249.67 | 270.71 | 256.74 | 0.55751 | b | ||
F | 254.28 | 262.70 | 276.12 | 264.37 | 1.70991 | b |
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