AF Boron

Highly efficient foliar Boron

Boron in soil is minute, but among micronutrients, Boron deficiency in plants is the most common. AF Boron is a highly efficient liquid foliar product designed to aid cell wall formation and stability, maintenance of structural and functional integrity of biological membranes and movement of sugar or energy into growing parts of plants. Produced using a unique process of production, via the Flex Fertiliser System ApS, AF Boron contains a true amide complex that increases the uptake and efficiency of trace elements to the crop.

Available pack sizes
20L, 200L, 600L, 1000L

Total analysis %

Total nitrogen 8
Amide nitrogen 8
Boron 0.8

Looking for Boron deficiencies

Boron deficiency occurs in many crops and on a wide range of soil types. There is a fine line between deficiency and toxicity, so it is important to apply the correct amount of Boron at the right rate using the right source. The primary factors affecting Boron availability are soil pH and soil moisture. Crop production on dry soils with pH >6.5 should be identified as being at greatest risk of Boron deficiency.

The first signs of Boron deficiency in plants are normally first visible in the new growth. Leaves will yellow and growing tips will wither. Under severe Boron deficiency, stunted development and death of meristematic growing points are common. Other common reactions include reduced root elongation and failure of flowers to set seeds. Low Boron supply may also adversely affect pollination and seed set, without visible leaf deficiency symptoms.

If in doubt, take a tissue analysis.

The importance of Boron

  • Boron helps control the transport of sugars in plants. It is important to cell division and seed development. As a micronutrient, the amount of Boron in soil is minute, but among micronutrients, Boron deficiency in plants is the most common.
  • Boron uptake by plants is controlled by the Boron level in soil solution rather than the total Boron content in soil. Boron uptake is a passive (non-metabolic) process. It moves with water in the plant tissues and accumulates in the leaves; therefore Boron uptake and accumulation are directly dependant on the rate of transpiration.


AF Boron can be applied in many situations to a variety of crops as well as alongside pesticide applications. Tailored use to alleviate nutritional deficiency or for supplementation of crop requirements is best. Use when issues are highlighted from tissue analysis, visual assessment or expected from historical issues and soil tests. Can be used as a routine maintenance dose. 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.

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

Half fill the spray tank with water, begin agitation and add the required quantity of AF Boron 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.

All agricultural crops: 2-5 L/ha in 100-200 L/ha water. Apply as necessary, higher rates may be needed in very severe deficiency.

Mix into the tank last when used alongside pesticides. AF Boron is compatible with a wide range of agrochemical products. Consult Aiva Fertiliser for further details. If unsure, it is advised to do a jar test before adding into the sprayer.

Do not mix with phosphates or sulphates.

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.