Boron in Agriculture
Boron in Agriculture

Boron as a Plant Micronutrient

Macronutrients are essential elements utilized by plants in relatively large amounts for a healty plant growth. Each of these elements has a significant function in plant nutrition. The primary macronutrients are Nitrogen (N), Phosphorus (P), Potash (K), Sulphur (S), Calcium (Ca) and Magnesium (Mg).

In addition to these elements,  plants also need other elements described as micronutrients.

The only difference between macronutrients and micronutrients are the required quantities. Although micronutrients are required in small quantities, they are as important as macronutrients in plant nutrition. Even all other essential nutrients are present in required amounts, it can limit the quality and yield if one of the micronutrients is insufficient.

Boron (B) is one of the micronutrients essential for plant growth.




Roles of Boron As A Plant Nutrient

Boron plays a major role in plant nutrition. Some functions of boron are correlated with nitrogen (N), phosphorus (P), potassium(K) and calcium(Ca)  in plants.

 Adequate B nutrition is critical for quality of crops and high yields.

The main functions of boron  are related to:

  • Carbohydrate metabolism
  • Root elongation
  • Protein synthesis
  • Seed formation
  • Cell wall formation
  • Rate of cell development
  • Sugar transport
  • Membrane integrity
  • Pollination and fertilization
  • Nucleic acid metabolism
  • Lignification
  • Respiration



Boron Deficiency

Soil parent material and texture are considered to be the major soil factors associated with the occurrence of B deficiency. Climate, particularly high rainfall conditions and low temperature are factors that need to be considered in relation to the occurrence of B deficiency.

Boron deficiency in crops may be suspected on the basis of symptoms and by plant analysis, and anticipated by soil analysis. Boron deficiency can be prevented and corrected by both soil and foliar applications. 



Crops Susceptible to Lack of Boron

Certain crops are known to be highly susceptible to lack of boron while some are moderately.

Highly Susceptible

Moderately Susceptible
Apples Coffee Oil Palm Asparagus Cocoa Pear
Cabbage Cotton Rapeseed Barley Coconut Potato
Cauliflower Cucumber Sugarbeet Beans Lettuce Radish
Celery Groundnut Sunflower Broccoli Maize Rice
Carrot Mango Turnip Citrus Papaya Soybean
Alfalfa     Clover Peach  




Correcting Boron Deficiency

Boron deficiency can be remedied by correct and timely application of solid or liquid B-fertilizers. Depending on the soil analysis, climatic conditions, previous cropping and the plant species application method can be changed.



Product Comparison Table






Chemical Name Di Sodium Tetraborate Decahydrate Di Sodium Tetraborate Pentahydrate Boric Acid       Di Sodium Octaborate Tetrahydrate Mineral Calcium Borate
Chemical Formula Na2B4O7 .10H2O Na2B4O7.5H2O H3BO3 Na2B8O13.4H20 Ca2B6O11.5H2O
 Boron content as
% B2O3
36.4 % Typical 48 % Typical 56.25 % Typical 67.5% Typical 38 % Min
Boron content as
% B
10.5 % Min 15% Min 17% Min 20.50 % Min 12% Min
Appearance White, crystalline solid  White, crystalline solid  White, crystalline solid   White, powder Greyish sandy substance 
 Solubility in water Soluble  Soluble  Soluble   Readily Soluble Sparingly Soluble 
 pH of water solution Mildly Alkaline  Mildly Alkaline  Acidic  Neutral  Alkaline 



Disodium Tetraborate Pentahydrate Hydrated Sodium calcium Borate Hydroxide Calcined Sodium calcium Borate Hydroxide
Na2B4O7.5H2O Na2=.2Cao.B2O3.5H2O Na2O.2Cao%B2O3.nH2O
48% typical 34 ±1% typical 46 ±1% typical
15% min 10.5 ±0.5% 14 ± 0.5%
White crystalline granules Dull white powder or granules Greyish coarse powder
Soluble Partially soluble Partially soluble
Mildly alkaline  Alkaline  Alkaline 

For Recommendations please click here.



Before this I never used boron on my crops, even I also do not know that kinds of products. Then, after the field trials, I look by my own by getting the result is goods which my paddy crops is taller and the grains is most of them is fully. When compare with my neighbour plot, it is obviously different. Mr Sharip, farmers in Tanjung Karang


Although it just after one month application of boron on my crops, I surprises that my paddy was look more greener and the growth more uniform rather than the plot that I do not use the boron. The application is also easy because I just can mix it with urea and directly applies to soil before transplanting. So, I do not need to worry to increase my labour cost. I can't wait to see the yield and I intend to use this product in the future. Mr Shafiee, farmers in Pendang Kedah


From my experiences, I never know that boron is required for pineapple. Then, after observation during trials periods, one month of boron application we can observe the effects of boron on the pineapple. We can compare that the leaves of pineapple is greener and its leaves are wider than the control. Boron also reduces the percentage of physiological disorder of sucker of pineapple during in field. Mr Anuar. Malavsian Pineapple Board Officer


Actibor 17 Powder high quality Boron to apply as fertilizer via foliar. Gipson Ltda / Colombia


Actibor 20, has good Boron Quality, High soluble specially to apply via foliar. Novedades E Innovadora Agroquimicos S.A. / Guatemala

Latest News
  • 2016
    AMF micronutrients are now registered with Agriculture Ministries of Canada, China, Thailand, Guatemala, Costa Rica, Columbia, Paraguay

  • 2014
    AMF product ACTICOL-G revolutionizes crop yields of Macademia in Australia. Trails are started in Avocado

  • 2013
    AMF products for agriculture introduced in Canada and USA
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