NutriMax Boron 15%

Boron (B) is an essential micronutrient that aides in the formation of new plant tissue and improves the storage quality of brassica bulb crops. 

 Clover Growth Clover Growth  Boost beet and brasica growth and quality

Boron enhances the structural integrity of plant cells. For this reason boron is required for the healthy formation of new plant tissue, effective clover nodulation, nitrogen fixation, flowering and pollination.


Symptoms of deficiency

Crops such as brassica’s or fodder beet need to take boron up early in their development cycle in order to prevent diseases like ‘brown heart’ (below).

Healthy and unhealthy swede

Widespread Opportunity

 Widespread opportunity

There is a boron deficiency in many areas across New Zealand and it is notably low in pumice, peat and sandy soils. However deficiencies also occur across a range of other soil types.

Boron deficiencies affect a number of crops, specifically brassicas, beets, lucerne, and legume seed crops. In order to confirm a boron deficiency in plants, a herbage analysis is essential.

The table below indicates critical plant boron levels:

 Widespread Opportunity

 Supplementing boron

Boron is immobile in plants, so it can’t be redirected around the plant to overcome problems and once cellular damage has occurred, it cannot be corrected. To be effective, boron should be applied at the sowing stage or soon after in a soluble, readily-available form.

In order to prevent boron deficiencies, boron should be included in the fertiliser programme for brassica and fodder beet crops. A Ballance Nutrient Specialist can recommend the right product and application rate for your situation.


Widespread Opportunity

 The benefits of supplementation

Herbage growth

Work undertaken on boron deficient soils in Southland has demonstrated that 12 kg of granular boron was sufficient to elevate herbage levels above 20 ppm (graph below). This meant the swede crop avoided all the boron-deficiency related issues that can develop at lower levels.

Brown heart reduction

The percentage incidence of ‘brown heart’ in the swedes was demonstrated to drop accordingly as the boron rate increased.