Effects of Magnetic Water Irrigation on the Growth, N Uptake and Antioxidant Enzyme Activities of Cotton Seedlings

Abstract

A hydroponic experiment was carried out to investigate the effects of magnetic water irrigation on the growth, nutritional status and antioxidant enzyme activity of cotton seedlings. Four levels of magnetic-treated water irrigation (0, 100, 300 and 500 mT) and three levels of salt stress (0, 100 and 200 mM NaCl) were applied. Salt stress adversely affected the dry weight, nutrient uptake and antioxidant enzyme activities of cotton seedlings. Magnetic-treated water irrigation significantly increased cotton seedling dry weight. Cotton seedling dry weight increased by 14%, 22% and 29% under the treatments of 100, 300 and 500 mT magnetic water irrigation, respectively, compared with the control, at a salt stress level of 100 mM NaCl. Moreover, magnetic water irrigation improved N uptake, but did not significantly affect P and K uptake. Magnetic water irrigation significantly increased the activity of superoxide dismutase (SOD), peroxidase (POD) and the proline content compared to the control (0 mT). Irrigation with magnetic water could be a promising technique in agriculture, especially under salt stress conditions. A suitable magnetic intensity of 300 mT is recommended.

Enhancing salt tolerance and crop growth in agricultural systems: the impact of magnetized‐ionized water irrigation on soil properties, microbial communities, and cotton growth

“…Rice has also exhibited improvements in response to magnetized‐ionized water irrigation, with increased SPAD value, dry matter accumulation, effective panicle number, seed setting rate, and yield 25 . Other investigations have revealed the significant effects of magnetized‐ionized water irrigation on pak choi, eggplants, and cotton 45,60‐63 . Olant height, stem diameter, leaf number, and crop yield were notably augmented due to this treatment.…”

“…25 Other investigations have revealed the significant effects of magnetized-ionized water irrigation on pak choi, eggplants, and cotton. 45,[60][61][62][63] Olant height, stem diameter, leaf number, and crop yield were notably augmented due to this treatment. This study has revealed that magnetized-ionized water irrigation enhanced key parameters including H, LAI, DM, and SPAD during the cotton seedling period.…”

Responses of the Growth Characteristics of Spinach to Different Moisture Contents in Soil under Irrigation with Magnetoelectric Water

“…This could be attributed to the fact that the H 2 O 2 in the magnetoelectric water promoted the establishment of the spinach antioxidant defense mechanism, alleviated the damage to the spinach photosynthetic apparatus caused by active oxygen accumulation induced by water stress, and thus improved the ability of the spinach to assimilate photosynthetic carbon. Experiments have demonstrated that magnetized water could enhance antioxidase activities in kidney beans (Phaseolus vulgaris) and lettuce (Lactuca sativa) to enhance stress resistance [59,60].…”