Sodom apple

Sodom apple (Calotropis procera) is a perennial shrub belonging to the Apocynaceae family. In agricultural settings, it is recognized as a persistent and invasive weed that thrives in arid and semi-arid environments, often dominating overgrazed lands and cultivated fields.

The species is widespread across the arid zones of Africa, the Middle East, and South Asia. In agronomy, it is known to severely impact crops such as cotton, cereals, and orchards, where it competes aggressively for soil moisture and essential mineral nutrients, significantly reducing crop yields.

The biology of Calotropis procera is characterized by high drought tolerance and a deep, spreading root system that allows it to regenerate even after top-growth removal. The plant produces a toxic latex, making it unpalatable to livestock, which eliminates the possibility of grazing-based control.

The economic impact of this weed is substantial. Beyond nutrient competition, its dense thickets interfere with mechanized farming operations, including tillage and harvesting. Furthermore, its allelopathic properties can inhibit the germination and development of neighboring desirable plant species.

Effective management requires an integrated weed management (IWM) strategy:

• Manual grubbing of individual plants, ensuring the taproot is removed.
• Deep tillage practices to disrupt the root architecture in infested fields.
• Application of systemic herbicides like glyphosate or triclopyr to cut stumps.
• Implementation of crop rotation to break the weed's life cycle.