AF Solstice

Delivering reliable, efficient energy to crops

AF Solstice delivers balanced ratios of micronutrients alongside a highly effective, Nitrogen free, Phosphorus dose to energise crops and aid in early rooting and plant development. Phosphorus is a vital component of ATP, the “energy unit” of plants and is essential for the general health and vigour of all plants. Produced using a unique process of production, via the Flex Fertilizer System ApS, AF Solstice contains a stable complex of Phosphorus, Manganese, Boron and Zinc which can help secure good rooting, crop quality and increased stalk and stem strength, and help avoid any micro-nutrient deficiencies during critical plant development phases.

Available pack sizes

Total analysis %

Phosphorus 20.6
Potassium 4.8
Sulphur 0.7
Manganese 0.3
Boron 0.2
Zinc 0.3

The benefits

AF Solstice can be used as a starter fertiliser, containing nutrients in a stable, available complex compound form that can be applied in close proximity to the seed at planting, OR a foliar application to provide a large, highly effective Nitrogen free dose of Phosphorus to the plant.

As a starter fertiliser...

  • AF Solstice enhances the development of emerging seedlings by supplying optimum levels of Phosphorus and balanced nutrients in accessible locations near the roots. With its low pH, that will help keep nutrients available for the plant roots longer, AF Solstice is perfectly suited for any drilling scenario. Rapid crop establishment is desirable since plant development and yield can be influenced during early growth stages.
  • Nutrient distribution throughout the root zone encourages deeper rooting which permits more root-soil contact, providing a larger reservoir of moisture and nutrients.
  • Helps ensure full-feed fertility to help the crop take full advantage of favourable growth conditions throughout the growing season.
  • AF Solstice complexes contain both cations and anions, bonded in a unique and stable form. As these complexes contain both negatively and positively charged ions, the complex can bond to the negatively charged soil particles. This means that when any eluviation occurs, the precious nutrient resources in the complexes are not lost.

As a foliar fertiliser…

  • AF Solstice provides a Nitrogen free dose of Phosphorus for the many scenarios where Phosphorus is required but Nitrogen is not.
  • Fast-growing young plants generally are more resistant to insect, disease and soil borne disease attacks and can complete with weeds more effectively.
  • Foliar Phosphorus applications may enhance any soil applied Phosphorus efficacy with potential increase in Phosphorus use efficiency and reduction of plant dependency on soil Phosphorus.
  • The function of Phosphorus in plants is very important. It helps a plant convert other nutrients into usable building blocks with which to grow.
  • Phosphorus is vital for plant development, starting at a seedling and continuing all the way to maturity.  Besides playing a role in the quality and formation of seeds, this nutrient helps ensure uniform heading, faster maturity and strengthens the plant to help survive the winter.
  • Phosphorus is extremely important for plant growth and maturity. Without it, a plant simply cannot be healthy. Phosphorus plays a role in photosynthesis, respiration, energy storage and transfer, cell division, cell enlargement and several other processes in plants.

Application method


IMPORTANT: This information is approved as part of the product label. All instructions within this section must be read carefully in order to obtain safe and successful use of this product.

Shake the container well before opening and use. Spray equipment should always be clean before adding product.

COMPATIBILITY: Compatible with a wide range of agrochemical products. For details of compatibilities contact your distributor or local AIVA FERTILISER representative. Carry out a jar test before adding to a new mix.


MIXING: Add the recommended quantity of AF SOLSTICE to the liquid applicator and top with the required water dosage (if necessary).

DOSE RATE: 10-60 L/ha

WATER RATE: Can be applied neat or with water according to applicator requirements.


Apply when there is adequate leaf for foliar coverage and uptake into the plant. For best results of nutritional uptake, apply in the evening or early morning. Do not spray when the crop is in stressed conditions such as very hot weather or drought.

MIXING: Half fill the spray tank with water, begin agitation and add the required quantity of AF SOLSTICE* to the tank. Rinse container thoroughly and then add the rinsings to the sprayer. Once mixed, continue agitation until spraying is complete and spray without delay. It is not advised to leave products in the tank for long periods of time. *Mix into the tank last when used alongside pesticides.

TIMING: Apply from 3 leaves through to mid tilling OR apply as necessary.

DOSE RATE: 3-5 L/ha

WATER RATE: 100-200 L/ha

Developed using the Flex Fertilizer System

Aiva Fertiliser uses Flex Fertilizer System technology where the liquid fertiliser contains nutrients in a form that can be taken up by the leaves and utilised by plants highly efficiently. The nutrient content is put into complex compounds using complex chemistry. This formulation results in nutrients being kept available to the plants for a longer period of time and are not lost to leaching or evaporation to the same extent as traditional fertilisers.