Magnetized water irrigation substantially increases chlorophyll and carotenoid content in plants.
Irrigation with magnetized water measurably upregulates photosynthetic pigment synthesis. In flax, chlorophyll a increased 17.46%, chlorophyll b increased 67.8%, and carotenoids increased 8.55% compared to tap water controls — alongside elevated indole and phenol content and new protein synthesis.
Twice-weekly irrigation of common flax with magnetized water (Magnetron U.T.3) produced striking increases in photosynthetic pigment content: chlorophyll a +17.46%, chlorophyll b +67.8%, and carotenoids +8.55% over untreated tap water controls (Amira et al. 2010, as reviewed by Teixeira da Silva & Dobránszki 2014). The same plants also showed elevated total indole content (+18.2%) and phenol content (+33.35%), plus the appearance of new protein bands not present in controls — suggesting broad metabolic activation rather than a narrow pigment-specific response.
The unusually large increase in chlorophyll b (nearly 4× the increase in chlorophyll a) suggests that magnetized water particularly promotes the antenna complex proteins of Photosystem II, potentially increasing light-harvesting capacity at lower light intensities. This pigment upregulation likely contributes directly to the 9.1% yield increase observed in the same experiment. Whether this effect generalizes to other species has not yet been confirmed in the reviewed literature.
A 2016 two-season Egyptian field trial on canola confirms the pattern: magnetized irrigation water increased chlorophyll a +8.86%, chlorophyll b +22.22%, and carotenoids +19.71% (all p<0.001), consistent with the flax data and extending this effect to a field-scale oilseed crop.
Source: Teixeira da Silva & Dobránszki, Environmental and Experimental Biology (2014) 12: 137–142 — reviewing Amira et al. 2010. Additional source: Hozayn M et al. African Journal of Agricultural Research 2016; 11(5): 441-449, DOI: 10.5897/AJAR2015.9382.