First, the type of irrigation system.
Like most row crops, hemp will perform the best with a drip irrigation system. Hemp has high water and nutrient demands and requires a specific level of moisture in the soil. Therefore, an irrigation system that can apply a very precise amount of water to the roots without saturating the soil is essential. No other type of irrigation system can deliver the right amount of nutrients and water to the plant like a drip irrigation system.
Further, by applying water and nutrients only where the plant needs it, weed pressure and fertilizer waste is significantly reduced.
Finally, by keeping the water off the foliage of the plant, diseases will be prevented, and the overall quality of the crop will be improved.