Stinking chamomile

Stinking chamomile (lat. Anthemis cotula) is an annual herbaceous weed belonging to the Asteraceae family. It is widely recognized in agriculture as a troublesome weed due to its aggressive growth patterns and the persistent nature of its seeds in the soil seed bank.

The plant is found globally in temperate regions, frequently invading cereal crops, pulse crops, and neglected lands. It thrives in various soil types but demonstrates particular preference for disturbed, nutrient-rich, and moist fields, where it can quickly become the dominant vegetation if left unchecked.

Biological attributes of this plant include a distinct, unpleasant odor caused by volatile oils, which discourages grazing animals. Its reproductive capacity is remarkably high, as a single mature plant is capable of producing tens of thousands of seeds that can remain dormant and viable in the soil for several years before germinating.

The economic impact of stinking chamomile stems from its ability to outcompete crops for essential water and soil nutrients, leading to significant yield losses. Furthermore, the presence of these weeds in harvested grain or hay significantly lowers the overall quality and market value of the agricultural produce.

Effective management requires an integrated approach to minimize the seed bank and prevent new infestations:

• Implementing strict crop rotation schedules to break the weed's life cycle.
• Applying pre-emergence and post-emergence herbicides targeting early growth stages.
• Using mechanical cultivation in row crops to disrupt root systems.
• Maintaining field borders and fallow areas by mowing before the plants set seed.