Control of bayberry fruit rot and effects of reducing chemical application and increasing efficiency by Bacillus SOD microecological preparation

doi:10.16178/j.issn.0528-9017.20250120

Abstract

Abstract:

Fruit rot is a major disease that damages bayberry fruits and causes significant economic losses. To investigate the efficacy of Bacillus SOD microecological preparation in controlling bayberry fruit rot and improving fruit quality，this study used facility-cultivated Dongkui bayberry as the test material and conducted field experiments with gradient concentrations of the SOD preparation and its combined application with chemical pesticides. The treatments included：Bacillus SOD microecological preparation at 250-fold dilution，at 500-fold dilution，and at 500-fold dilution combined with 50% dose of conventional pesticides，with conventional pesticides as the control. Spray applications were initiated at the young fruit stage and repeated at 15-day intervals. Fruit rot incidence and quality indicators were measured at maturity. Results showed that compared with the control，both concentrations of Bacillus SOD microecological preparation and its low-concentration combination with reduced chemical pesticides demonstrated certain control efficacy against fruit rot，with efficacy ranging from 32.2% to 86.1%. The 250-fold dilution treatment exhibited optimal control effect，with an efficacy of 86.1%，and the most significant improvement in economic benefit，which increased by 21.6% compared with the control. In conclusion，scientific application of Bacillus SOD microecological preparation can improve fruit quality，enhance economic efficiency，and reduce pesticide use in bayberry production，making it worthy of widespread promotion in the industry.

Key words: Bacillus SOD microecological preparation, bayberry, control efficacy, economic benefit

CLC Number:

S482.2⁺92

ZHU Jiewen, YING Zhengzheng, WU Yuyong, WANG Jing, REN Haiying, WANG Qi, LI Gang. Control of bayberry fruit rot and effects of reducing chemical application and increasing efficiency by Bacillus SOD microecological preparation[J]. Journal of Zhejiang Agricultural Sciences, 2026, 67(3): 716-720.

Figures/Tables 3

References 21

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处理	平均烂果率	防治效果
CK	11.5	0
A1	1.6	86.1
A2	7.8	32.2
A3	2.8	75.7

处理	平均烂果率	防治效果
CK	11.5	0
A1	1.6	86.1
A2	7.8	32.2
A3	2.8	75.7

处理	单果重/g	可溶性固形物含量/%	维生素C含量/（mg·kg^-1）	花青素含量/（μg·g^-1）	总酸含量/‰	可溶性糖含量/（mg·g^-1）
CK	30.4±3.4 a	8.9±0.8 c	661±17 a	418.7±5.2 b	7.1±0.1 c	64.5±4.0 b
A1	25.2±2.2 c	11.3±1.1 a	572±12 b	220.7±12.1 c	11.0±0.4 a	96.1±8.8 a
A2	27.5±6.1 bc	10.4±1.0 b	382±15 d	637.1±12.4 a	10.1±0.1 b	92.7±11.7 a
A3	29.4±2.3 ab	10.0±1.5 b	434±7 c	231.9±9.9 c	7.3±0.1 c	84.1±8.4 a

处理	单果重/g	可溶性固形物含量/%	维生素C含量/（mg·kg^-1）	花青素含量/（μg·g^-1）	总酸含量/‰	可溶性糖含量/（mg·g^-1）
CK	30.4±3.4 a	8.9±0.8 c	661±17 a	418.7±5.2 b	7.1±0.1 c	64.5±4.0 b
A1	25.2±2.2 c	11.3±1.1 a	572±12 b	220.7±12.1 c	11.0±0.4 a	96.1±8.8 a
A2	27.5±6.1 bc	10.4±1.0 b	382±15 d	637.1±12.4 a	10.1±0.1 b	92.7±11.7 a
A3	29.4±2.3 ab	10.0±1.5 b	434±7 c	231.9±9.9 c	7.3±0.1 c	84.1±8.4 a

处理	商品果量/（kg·株^-1）	商品果单价/（元·kg^-1）	每667 m²成本投入/万元	每667 m²经济效益/万元
CK	43.78	160	0.82	13.19
A1	47.19	180	0.95	16.04
A2	44.12	160	0.90	13.22
A3	46.48	180	0.95	15.78