Maximum Yield USA 2015 January | Page 66

finding the fountain of youth Cytokinins and Ascorbic Acids Cytokines—concentrated amounts of plant growth regulators that stimulate plant cell division—can somewhat control plant senescence. Foliar applications of these products have been shown to delay the onset of senescence and promote shoot and root growth, which can provide for an expanding plant architecture that is more resilient to change. Kelp and other sea plants contain relatively concentrated amounts of plant cytokinins, auxins and other growth regulators. When applied regularly, these products can extend life or lengthen the effective growth “Kinetin increases the yields of annual fruits and vegetables, often producing seedless fruits, and increases the budding of herbs. " 64 Maximum Yield USA  |  January 2015 curve and drive up yields. Another option is kinetin, a type of cytokinin sold commercially under many trade names in mostly synthetic forms and usually applied to blossoms to induce fruit set. Kinetin increases the yields of annual fruits and vegetables, often producing seedless fruits, and increases the budding of herbs. Foliar sprays of ascorbic acids are also important since they contain a vital anti-oxidant enzyme called superoxide dismutase (SOD), an enzyme thought to disarm DNA-damaging free radicals. Damaged DNA causes replication errors in cells and plant tissues and can hasten cell death, increasing the risk of plant disease. SOD is thought to be a powerful ally in reducing the effect of free radicals. These age-causing mutations damage DNA within the cells, often shutting down plants early and stunting growth.