Main advantages are:
• Fast acting correction of deficiencies. EASY TO USE.
• Rapid leaf uptake and utilisation
• Compatible with most fertilizers and pesticides. ENVIRONMENTALLY SAFE.
• Non-phytotoxic to plants AND NOT CORROSIVE TO EQUIPMENTS.
Magnesium’s Role in Plant nutrition
symbol: Mg; available to plants as the ion Mg2+
- The predominant role of Mg is a major constituent of the chlorophyll molecule, and it is therefore actively involved in photosynthesis.
- Mg is a co-factor in several enzymatic reactions that activate the phosphorylation processes.
- Mg is required to stabilize ribosome particles and also helps stabilize the structure of nucleic acids.
- Mg assists the movement of sugars within a plant.
The essential roles of Magnesium for plants.
Magnesium has a number of key functions in plants. Particular metabolic processes and reactions that are influenced by Mg include: 1) photophosphorylation (such as ATP formation in chloroplasts), 2) photosynthetic carbon dioxide (CO2) fixation, 3) protein synthesis, 4) chlorophyll formation, 5) phloem loading, 6) partitioning and utilization of photo assimilates, 7) generation of reactive oxygen species, and 8) photo oxidation in leaf tissues. Consequently, many critical physiological and biochemical processes in plants are adversely affected by Mg deficiency, leading to impairments in growth and yield. In most cases, the involvement of Mg in metabolic processes relies on Mg activating numerous enzymes. An important Mg-activated enzyme is the ribulose- 1,5-bisphosphate (RuBP) carboxylase, which is a key enzyme in the photosynthesis process and the most abundant enzyme on earth.
Leaf yellowing in the form of interveinal chlorosis on older leaves is one of the typical symptoms of Mg deficiency stress. It is reported that up to 35% of the total Mg in plants is bound in chloroplasts. (Chloroplasts are the organelles that host thylakoids the Mg-containing compartments where light energy is converted to chemical energy through the process of photosynthesis).
Due to its potential for leaching in highly weathered soils and the interaction with Al, Mg deficiency is a critical concern in acid soils. One of the well-documented plant adaptation mechanisms to acid soils is the release of organic acid anions from roots. Organic acid anions released from roots will chelate toxic Al ions and form Al-organic acid complexes that are no longer phyto toxic. It is well documented that Mg is required for effective release of organic acid anions from roots to modify an Al-toxic rhizosphere (Yang et al., 2007). Like Mg, Ca is also important in alleviating Al toxicity in acid soils.
Sufficient Mg is required for maximizing the carbohydrate transport into sink organs (such as roots and seeds) to promote high yields. Maintenance of adequate Mg nutrition at the late growth stages is also essential for minimizing generation of harmful reactive oxygen species and photo oxidative damage in chloroplasts. The application of late-season Mg through fertilization or foliar sprays may be useful in some circumstances. The impairment in root growth due to Mg deficiency may have also serious impacts on uptake of mineral nutrients and water, especially under marginal soil conditions.