Which practice is recommended for managing Rhizoctonia sp.?

The recommended practice for managing Rhizoctonia sp. is to avoid planting in fields with a lot of plant debris. This pathogen thrives in environments rich in decomposing organic matter, as the debris can provide both a habitat and a source of nutrients for the fungus. By minimizing the amount of plant debris in the field, the likelihood of Rhizoctonia sp. surviving and proliferating is significantly reduced.

Moreover, managing plant debris can interrupt the life cycles of the pathogens, thereby lowering their population density in the soil and plant material. This practice is particularly important in preventing diseases caused by Rhizoctonia, which can be devastating to various crops, leading to issues like root rot and damping-off.

The other practices mentioned, such as planting in fields with a history of Rhizoctonia or using high-nitrogen fertilizers, could actually exacerbate the issue by providing favorable conditions for the pathogen. Crop rotation with legumes may be beneficial for other pathogens or nutrient management, but does not specifically address the management of Rhizoctonia, emphasizing the importance of reducing plant debris as a primary method for managing this soilborne pathogen.