Magnesium is a major element, essential for optimum growth and development in plants. It is an integral part of chlorophyll, and also is involved in enzyme systems which govern oil production on yield in oilseed rape and other oil bearing crops. It is used widely as a foliar spray on cereals at ear emergence, and on potatoes during bulking, to increase yield.
Foliar absorption
The use of unique enhancers allows the nutrients to enter the plant by two main pathways, one acting quickly and the other more slowly. This provides a mechanism for sustained uptake over time. The quick uptake is achieved by direct entry via stomata on the surface of the leaf. This relies on good coverage from the foliar spray. To maximise uptake via this route, addition of a good quality wetter, such as OMEX SW7 is recommended. This leads to stomatal flooding, allowing maximum absorption.
The slower, sustained uptake is brought about by the uptake enhancers in the formulation. These work by stimulating the microbes which live naturally on the surface of the leaf – sometimes referred to as the epiphyllic micro organisms. These help solubilise the remaining foliar spray. Once in ionic form, it then passes into the plant by diffusion through minute
aqueous pores in the leaf cuticle
