Kingfol Range

Single element formulations for specific deficiencies

Flowable foliar nutrients

Kingfol foliar nutrients have been formulated using the high quality mineral elements, to give the following benefits:

  • Concentrated liquid formulations to minimise handling, packaging, transport and application rates
  • Widely tank-mixable with agrochemicals
  • Formulated with uptake enhancers to optimise performance over time
  • Disperses easily with no need for pre-mixing
  • Single element formulations to correct specific deficiencies

The Kingfol Range

Product Element Analysis w/v w/w Application Rate l/ha
Kingfol Mg Magnesium Mg 22% 17%      2-4
Kingfol S Sulphur S 72% 51%      5-10
Kingfol Zn Zinc Zn 70% 41%      0.5-1
Kingfol Cu Copper Cu 50.1% 29.5%      0.5-1
Kingfol Mn Manganese Mn 52.8% 28.9%      0.5-1
Kingfol Cu/Mn/Zn 


















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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.


Sulphur is a major element for plant growth. Atmospheric deposition has declined dramatically in recent years and consequently the need for supplementation is now greater than ever. Kingfol S is a unique formulation of ‘bio sulphur’ which contains microbial biomass. This, coupled with the extremely fine particle size, gives responses which can be greater than conventional sulphur sources, such as ammonium sulphate.


Throughout the world Zinc deficiency is the most widespread of all the micronutrients. It stimulates enzyme activity within the plant and can be associated with calcium in deficiencies such as bitter pit. Applications of foliar zinc often stimulate rooting and are particularly useful in early crop growth.


Copper is a micronutrient involved in many enzyme systems. Some of these include pollen formation and fertility, with deficiency resulting in effects on plant growth and yield.


The micronutrient manganese is involved in many enzyme systems within the plant. Deficiencies are common in a wide range of crops. Manganese can be poorly absorbed from the soil and foliar applications are often a routine part of crop production.

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.