Guardian Farming June 2011

Page 15


Page 15

Humate and Humic

Substances are responsible for kelation of calcium holding these in a bio-available form.

Humic substances and rock phosphates The stimulatory effects of humic substances have been directly correlated with the enhanced uptake of macronutrients such as nitrogen, phosphorus and sulphur and micronutrients Fe, Zn, Cu and Mn. Humic substances enhance the uptake of minerals through the stimulation of microbiological activity. Humic substances actually coat mineral surfaces, which aid in the solubility of otherwise insoluble compounds by dissolving, complexing, and chelating the dissolved nutrients. Humic substances can improve the effectiveness of rock phosphate causing the release of PO4-anions and CA2+ cations from hardly soluble rock minerals because high total acidity and its ability to complex and chelate the resulting solution and to stimulate the microbial metabolism. Research has also conďŹ rmed that combining rock phosphate with humate can increase the available phosphate analysis from near zero to over 10 %.

Calcium Calcium and humic substances make a powerful combination. Many of the beneďŹ ts of calcium overlap with the beneďŹ ts of humic substance along with their biological stimulation and chelating capacity. Humate and a dry lime source work as well if not better than other chelated calcium products, because the humic substances are known to complex both cations and anions, creating a synergistic effect, resulting in the combination, is greater than the individual ingredients. Humic substances

Conclusion and pathway to sustainablity The conventional tools of chemistry have not been able to explain why these materials work in the complex soil ecosystems.

Humic substances also chelate iron, zinc and copper and complex with many other trace elements. Elements typically found in natural phosphate minerals such as zinc and copper, are known to suppress pathogens and encourage the growth of beneďŹ cial organisms.

They have all the qualities of humus, but are not humus, and are available as humate in dry powers or humic acids and fulvic acids in liquids. Because of their ability to improve fertiliser efďŹ cientcy, humic substances are best utilised as part of a total fertiliser program blended into fertilisers. Humates, humic acids and fulvic acids are powerful biological tools which the beneďŹ ts should result in. s "IOLOGICAL RELEASE OF NUTRIENTS FROM OTHERWISE INSOLUBLE materials s 2OOT GROWTH s .UTRIENT UPTAKE FROM LARGER ROOT MASS s 2ESPIRATION s 0HOTOSYNTHESIS s -INERAL BIOAVAILABILITY AND STABILISATION s .ITROGEN STABILISATION AND FERTILISER EFlCIENCY s $ISEASE RESISTANCE Humic substances are critical components of water and soil ecosystems. The vast agronomic and environmental importance of these materials is just beginning to be appreciated. The ecological and plant-nutritional beneďŹ ts provide sufďŹ cient justiďŹ cation for using these extraordinary complex eco-minerals.

D.L. HART 25.2.2011

Don Hart standing in a wheat ďŹ eld that had no fungicides or insecticides applied and recieved less than 90kg N/HA, demonstrating the beneďŹ ts of soil heatlh.

Biological Sustainable Solutions For Today’s Agricultural Challenges


• Balanced natural mineralised fertiliser programmes • Guano Phosphate, Dolomite, Humates and Foliar Fertilisers

Rules towards a sustainable farming system.

1. Test soils and balance all soil nutrients, not just NPK, and apply macro and micro-nutrients and minerals in order to reduce limiting factors and to enhance the balance of chemistry, physics and biology. 2 . Use fertilisers that are not harmful to soil health, soil life and plant Roots. Add humates to fertilisers to buffer and increase the efficientcy of fertilisers. 3. Use natural mined soil nutrients that have a balance of quick and slow release properties to provide energy throughout the entire growing season. (insoluble but available ) 4. Use pesticides, herbicides, biotechnology and nitrogen sparingly,

Use cultivation methods that enhance soil structure for air and water movement. 5. Get legumes into the system and have in place the ten essential soil and plant nutrients that are necessary for nitrogen fixation, and to drive the photosynthesis process. 6. Feed the biology, apply food for the soil life, add fish and seaweed products plus vitamins, and a carbon source of crop residues ,compost, humates and sugar. 7. Have fun, enjoy the enthusiasm and excitement of progressing towards a successful sustainable farming system. Healthy Soils, Healthy Plants, Healthy Animals, Healthy and Happy People.

I am pleased to introduce Sally Truelove to Healthy Soils. Sally is a trained Agronomist and shares her time with Mountain View Agronomy and advising and advancing Healthy Soils Biological Farming principals. With a sound science background, Sally is contactable on 0274 362 458.

Healthy Soils Healthy Soils Biological Farming Consultant Donald Hart 0274320187 Farming JUNe.indd 15

3/06/2011 10:50:04 p.m.