What is a notable challenge faced in organic farming?

The notable challenge faced in organic farming primarily revolves around pest and weed management without the use of synthetic chemicals. Organic farmers must rely on natural methods to control pests and weeds, which can often be less effective than conventional chemical methods. This requires extensive knowledge of integrated pest management techniques, such as crop rotation, the use of beneficial insects, and organic herbicides. Moreover, these natural methods can be more labor-intensive and may not always provide the immediate results that synthetic chemicals can offer. Consequently, managing pests and weeds organically poses a significant hurdle to maintaining crop health and yield, ultimately affecting the overall productivity of organic farming.