病虫害综合管理(IPM)是一种管理疾病的综合方法,专注于结合各种策略,以有效和环保的方式减少病原体种群。我们研究了IPM对直接播种水稻(DSR)和移植水稻(TR)系统中有益微生物种群的影响及其与病原体种群的关系。这项研究表明,IPM实践具有显著较高的有益微生物种群,如哈茨木霉和荧光假单胞菌,与非IPM(农民实践)相比,病原体镰刀菌的水平较低。2019年,在Bambawad的TR中,IPM中哈茨木霉的平均平均种群为6.38×103CFU/g,而非IPM中的平均种群为3.22×103CFU/g。在DSR的Karnal位置,2019年荧光假单胞菌平均种群的IPM(4.67×103CFU/g)明显高于非IPM(3.82×103CFU/g)。2017年,在TR的Haridwar,与非IPM领域(11.48×103CFU/g)相比,IPM领域的轮虫种群数量显着降低(9.46×103CFU/g)。三年多,在TR和DSR的所有三个位置观察到IPM地块中有益微生物种群的显着增加,强调IPM实践的可持续影响。疾病动力学分析表明,IPM有效地管理了DSR和TR系统中的关键疾病,微生物密度与疾病严重程度之间存在显著相关性。在所有三个位置,轮虫种群与bakanae发病率之间均呈显着正相关。在TR和DSR中,纹枯病的发生率与荧光假单胞菌种群呈负相关。在DSR中,随着哈茨木霉种群的增加,细菌性疫病和褐斑病减少。生物制剂哈茨草和荧光假单胞菌降低了疾病的发病率,强调有益微生物在疾病抑制中的作用及其对使用IPM实践的可持续生产的重要性。
Integrated pest management (
IPM) is a comprehensive approach to managing diseases, focusing on combining various strategies to reduce pathogen populations effectively and in an environmentally conscious way. We investigated the effects of
IPM on beneficial microbial populations and its relationship with pathogen populations in both direct-seeded rice (DSR) and transplanted rice (TR) systems. This study demonstrates that IPM practices have significantly higher populations of beneficial microbes, such as Trichoderma harzianum and Pseudomonas fluorescens, and lower level of the pathogen Fusarium verticillioides compared to non-IPM (farmer practices). The average mean population of T. harzianum was 6.38 × 103 CFU/g in IPM compared to 3.22 × 103 CFU/g in non-
IPM during 2019 in TR at Bambawad. P. fluorescens mean population in 2019 was significantly higher in
IPM (4.67 × 103 CFU/g) than in non-
IPM (3.82 × 103 CFU/g) at the Karnal location in DSR. The F. verticillioides populations were significantly lower in IPM fields (9.46 × 103 CFU/g) compared to non-
IPM fields (11.48 × 103 CFU/g) during 2017 at Haridwar in TR. Over three years, a significant increase in the populations of beneficial microbes in IPM plots was observed in all three locations of both TR and DSR, highlighting the sustainable impact of IPM practices. Disease dynamics analysis revealed that IPM effectively managed key diseases in both DSR and TR systems, with significant correlations between microbial density and disease severity. A significant positive correlation was recorded between F. verticillioides population and bakanae incidence at all three locations. Sheath blight incidence was negatively correlated with P. fluorescens population in both TR and DSR. In DSR, bacterial blight and brown spot diseases are reduced with the increased population of T. harzianum. Bioagents T. harzianum and P. fluorescens reduced disease incidence, underscoring the role of beneficial microbes in disease suppression and their importance for sustainable production using IPM practices.