Magnetized water irrigation increases crop yield and vegetative biomass across multiple species.
Irrigating with water passed through a magnetic field produces measurable yield and biomass gains across diverse crops. Documented increases include flax yield +9.1%, celery yield +12%, snow pea yield +7.8%, maize seedling weight +17–25%, and cowpea root biomass +47% compared to untreated water controls.
Multiple greenhouse and pot experiments document consistent yield and biomass improvements when crops are irrigated with magnetized water (MW). In common flax irrigated twice weekly with MW (Magnetron U.T.3), fresh weight increased 16.62%, dry weight 12.58%, and seed yield 9.1% per plant compared to tap water controls (Amira et al. 2010). Celery irrigated with magnetized recycled water yielded 12% more biomass with 12% greater water productivity. Snow pea yield increased 7.8% with magnetized tap water, and pod dry weight increased 8.5% (Maheshwari & Grewal 2009). Maize seedlings grown from seeds soaked in 235 mT MW were 10–17% taller and 17–25% heavier at 15 days (Mahmood & Usman 2014). In cowpea, leaf fresh/dry weight increased 20–22%, stem 19–20%, and root weight 47% under weekly MW irrigation (Sadeghipour & Aghaei 2013).
Magnetized water also modifies soil properties at harvest — altering pH, electrical conductivity, and P and K content — which may contribute to improved nutrient availability beyond the direct effect on plant physiology. The degree of improvement varies by water type (potable, recycled, saline), field strength, and crop species.
Two more recent studies extend this pattern. A 2024 garlic study found magnetized irrigation water increased fresh root weight by ~15.9% and eliminated lodging (0% vs. 9% in controls) by Day 15. A 2021 hydroponic pechay (Brassica) study found a clean dose-response relationship between magnet number and growth: at the highest dose, plant height increased 24.7%, leaf area up to 47.93%, root length 46.50%, and fresh weight 34.97% versus an unmagnetized control — with statistically significant (p<0.01) effects across nearly all measured parameters.
Source: Teixeira da Silva & Dobránszki, Environmental and Experimental Biology (2014) 12: 137–142 — reviewing Amira et al. 2010; Maheshwari & Grewal 2009; Mahmood & Usman 2014; Sadeghipour & Aghaei 2013. Additional sources: Zhang Y, Hue N. Modern Concepts & Developments in Agronomy 2024; 14(5); Galvan JPD et al. International Journal of Agronomy and Agricultural Research 2021; 19(1): 1-8.