Which method is an environmentally friendly approach to irrigation?

Using only rainwater or recycled water as an irrigation method is considered an environmentally friendly approach for several reasons. First, it promotes water conservation by utilizing water resources that would otherwise be wasted. Rainwater harvesting captures and directs precipitation for agricultural use, reducing reliance on groundwater or surface water sources that may be over-extracted or scarce.

Additionally, using recycled water helps to reduce the amount of wastewater that would typically enter sewage systems or bodies of water, thus minimizing pollution and promoting a more sustainable water cycle. This method also decreases energy consumption associated with transporting fresh water, further benefiting the environment.

Overall, this approach aligns with sustainable agricultural practices by conserving natural resources, reducing waste, and minimizing the ecological footprint of irrigation activities.