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What is Leonardite

Leonardite is a low rank coal derived from prehistoric plant matter. It is found as outcropping of lignite deposits, usually very close to the surface. It differs from lignite by its high oxidation degree and the higher carboxy groups. Due to the large amount of living bacteria, Leonardite was formed instead of coal in certain sedimentation layers. Being a highly decomposed compressed natural organic humus that has been further processed by microbial activity, Leonardite has a high humic acid content which is one of the most bio-chemically active elements.

The composition of Leonardite will show on average organic matter 75-90%, aluminum, nitrogen, phosphorus, potassium, sulfur, iron and calcium less than 1%. Since Leonardite is a naturally mined material, the composition of Leonardite differs slightly throughout the deposit and from deposit to deposit.


Leonardite is a natural form of humates, completely organic in nature and beneficial in a wide variety of applications. Numerous tests have been conducted which substantiate the fact that our Leonardite consistently shows higher levels of carbon content, resulting in a higher humic content.

Leonardite is a soft waxy, black or brown, shiny, vitreous mineraloid  that is easily soluble in alkaline solutions. It is an oxidation  product of lignite, associated with near-surface mining . It is a rich source of humic acid  (up to 90%)and is used as a soil conditioner , as a stabilizer for ion-exchange resins in water treatment,in the remediation of polluted  environments and as a drilling  additive.

Why Humic Acid from Leonardite


The maximum saturation we have been able to achieve with highly active humic acid is 15%. Humic acid salts begin to precipitate if we increase the solids content above this figure. Any humic acid product that claims to contain more than 15% humic acid solids actually contains a smaller percentage of active acids plus inactive and often times insoluble particles. The inactive and insoluble portions add nothing to the solution but instead plug irrigation and spray distribution equipment.

Humic acid extracted from manure or peat is usually not as effective in absorbing micronutrients as humic acid originating in leonardite. Similarly, lignite-based humic acid performs poorly as a growth stimulator unless it is partially oxidized. This usually adds considerably to the product's cost. Leonardite has been oxidized by nature, resulting in a highly active humic acid at reasonable cost. Humic acid extracted from leonardite is an excellent balance of effectiveness and low cost.

Leonardite Humic and Fulvic Acid  Solid (Powder and Ganule),Liquid Forms are Suitable,applicable for All Crop as below and more Plant...


Abaca (Manila hemp) Musa textilis 9213

Alfalfa for fodder Medicago sativa 911

Alfalfa for seed Medicago sativa 911 1.8.2

Almond Prunus dulcis 361

Anise seeds Pimpinella anisum 6212

Apple Malus sylvestris 351

Apricot Prunus armeniaca 352

Areca (betel nut) Areca catechu 992

Arracha Arracacia xanthorrhiza 59 1.2.9

Arrowroot Maranta arundinacea 59 1.2.5

Artichoke Cynara scolymus 211

Asparagus Asparagus officinalis 212

Avocado Persea americana 311

Bajra (Pearl millet) Pennisetum americanum 18

Bambara groundnut Vigna subterranea 79 1.3.9

Banana Musa paradisiaca 312

Barley Hordeum vulgare 15 1.1.4

Beans, dry, edible, for grains Phaseolus vulgaris 71 1.3.1

Beans, harvested green Phaseolus and Vigna spp. 71

Beet, fodder (mangel) Beta vulgaris 81

Beet, red Beta vulgaris 81

Beet, sugar Beta vulgaris 81

Beet, sugar for fodder Beta vulgaris 81

Beet, sugar for seeds Beta vulgaris 81 1.8.1

Bergamot Citrus bergamia 329

Betel nut Areca catechu 992

Black pepper Piper nigrum 6221

Black wattle Acacia mearnsii 992

Blackberries of various species Rubus spp. 349

Blueberry Vaccinium spp. 346

Brazil nut Bertholletia excelsa 369

Breadfruit Artocarpus altilis 319

Broad bean, dry Vicia faba 72 1.3.2

Broad bean, harvested green Vicia faba 72

Broccoli Brassica oleracea var. botrytis 214

Broom millet Sorghum bicolor 18

Broom sorghum Sorghum bicolor 14

Brussels sprouts Brassica oleracea var. gemmifera 219

Buckwheat Fagopyrum esculentum 192 1.1.9

Cabbage (red, white, Savoy) Brassica oleracea var. capitata 213

Cabbage, Chinese Brassica chinensis 213

Cabbage, for fodder Brassica spp. 213

Cacao (cocoa) Theobroma cacao 614

Cantaloupe Cucumis melo 225

Caraway seeds Carum carvi 6219

Cardamom Elettaria cardamomum 6222

Cardoon Cynara cardunculus 219

Carob Ceratonia siliqua 39

Carrot, edible Daucus carota ssp. sativa 231

Carrot, for fodder Daucus carota ssp. sativa 231

Cashew nuts Anacardium occidentale 362

Cassava (manioc) Manihot esculenta 53 1.2.3

Castor bean Ricinus communis 431

Cauliflower Brassica oleracea var. botrytis 214

Celeriac Apium graveolens var. rapaceum 239

Celery Apium graveolens 219

Chayote Sechium edule 229

Cherry (all varieties) Prunus spp. 353

Chestnut Castanea sativa 363

Chickpea (gram pea) Cicer arietinum 73 1.3.4

Chicory Cichorium intybus 217

Chicory for greens Cichorium intybus 217

Chili, dry (all varieties) Capsicum spp. (annuum) 6211

Chili, fresh (all varieties) Capsicum spp. (annuum) 6211

Cinnamon Cinnamomum verum 6223

Citron Citrus medica 329

Citronella Cymbopogon citrates/ Cymbopogon nardus 992

Clementine Citrus reticulata 324

Clove Eugenia aromatica (Syzygium aromaticum) 6224

Clover for fodder (all varieties) Trifolium spp. 911

Clover for seed (all varieties) Trifolium spp. 911 1.8.3

Cocoa (cacao) Theobroma cacao 614

Coconut Cocos nucifera 441

Cocoyam Colocasia esculenta 59 1.2.8

Coffee Coffea spp. 611

Cola nut (all varieties) Cola acuminata 619

Colza (rapeseed) Brassica napus 435

Corn (maize), for cereals Zea mays 12 1.1.3

Corn (maize), for silage Zea mays 12

Corn (sweet), for vegetable Zea mays 12

Corn for salad Valerianella locusta 219

Cotton (all varieties) Gossypium spp. 9211

Cottonseed (all varieties) Gossypium spp. 9211

Cowpea, for grain Vigna unguiculata 74 1.3.6

Cowpea, harvested green Vigna unguiculata 74

Cranberry Vaccinium spp. 349

Cress Lepidium sativum 219

Cucumber Cucumis sativus 221

Currants (all varieties) Ribes spp. 341

Custard apple Annona reticulate 319

Dasheen Colocasia esculenta 59 1.2.8

Dates Phoenix dactylifera 313

Drumstick tree Moringa oleifera 6229

Durra (sorghum) Sorghum bicolour 14

Durum wheat Triticum durum 11;


Earth pea Vigna subterranea 79 1.3.9

Edo (eddoe) Xanthosoma spp.; Colocasia spp. 59 1.2.8

Eggplant Solanum melongena 222

Endive Cichorium endivia 219

Fennel Foeniculum vulgare 219

Fenugreek Trigonella foenum-graecum 79 1.3.9

Fig Ficus carica 314

Filbert (Hazelnut) Corylus avellana 364

Fique Furcraea macrophylla 9219

Flax for fibre Linum usitatissimum 9213

Flax for oil seed (linseed) Linum usitatissimum 9213

Formio (New Zealand flax) Phormium tenax 9214

Garlic, dry Allium sativum 233 1.2.7

Garlic, green Allium sativum 233

Geranium Pelargonium spp.; Geranium spp. 931

Ginger Zingiber officinale 6225

Gooseberry (all varieties) Ribes spp. 342

Gourd Lagenaria spp; Cucurbita spp. 226

Gram pea (chickpea) Cicer arietinum 73 1.3.4

Grape Vitis vinifera 33 2.1.4

Grapefruit Citrus paradisi 321

Grapes for raisins Vitis vinifera 33

Grapes for table use Vitis vinifera 33

Grapes for wine Vitis vinifera 33

Grass esparto Lygeum spartum 991

Grass, orchard Dactylis glomerata 911

Grass, Sudan Sorghum bicolor var. sudanense 911

Groundnut (peanut) Arachis hypogaea 42

Guava Psidium guajava 319

Guinea corn (sorghum) Sorghum bicolor 14

Hazelnut (filbert) Corylus avellana 364

Hemp fibre Cannabis sativa ssp. indica 9213

Hemp, Manila (abaca) Musa textilis 922

Hemp, sun Crotalaria juncea 9213

Hempseed Cannabis sativa (marijuana) 439

Henequen Agave fourcroydes 922

Henna Lawsonia inermis 911

Hop Humulus lupulus 619

Horse bean Vicia faba 72 1.3.2

Horseradish Armoracia rusticana 239

Hybrid maize Zea mays 12

Indigo Indigofera tinctoria 991

Jasmine Jasminum spp. 952

Jerusalem artichoke Helianthus tuberosus 211

Jowar (sorghum) Sorghum bicolor 14

Jute Corchorus spp. (over 30 sp.) 9212

Kale Brassica oleracea var. acephala 219

Kapok Ceiba pentandra 922

Kenaf Hibiscus cannabinus 9212

Kohlrabi Brassica oleracea var. gongylodes 239

Lavender Lavandula spp. (over 15 sp.) 931

Leek Allium ampeloprasum; Allium porrum 235

Lemon Citrus limon 322

Lemon grass Cymbopogon citratus 922

Lentil Lens culinaris 75 1.3.5

Lespedeza (all varieties) Lespedeza spp. 911

Lettuce Lactuca sativa var. capitata 215

Lime, sour Citrus aurantifolia 322

Lime, sweet Citrus limetta 322

Linseed (flax for oil seed) Linum usitatissimum 432

Liquorice Glycyrrhiza glabra 931

Litchi Litchi chinensis 319

Loquat Eriobotrya japonica 359

Lupine (all varieties) Lupinus spp. 76 1.3.9

Macadamia (Queensland nut) Macadamia spp. ternifolia 369

Mace Myristica fragrans 6222

Maguey Agave atrovirens 922

Maize (corn) Zea mays 12 1.1.3

Maize (corn) for silage Zea mays 12

Maize (hybrid) Zea mays 12

Maize, ordinary Zea mays 12

Mandarin Citrus reticulata 324

Mangel (fodder beet) Beta vulgaris 81

Mango Mangifera indica 315

Manioc (cassava) Manihot esculenta 53 1.2.3

Maslin (mixed cereals) Mixture of Triticum spp.; Secale cereale 191 1.1.8

Medlar Mespilus germanica 359

Melon (except watermelon) Cucumis melo 225

Millet broom Sorghum bicolor 18

Millet, bajra Pennisetum americanum 18

Millet, bulrush Pennisetum americanum 18

Millet, finger Eleusine coracana 18

Millet, foxtail Setaria italica 18

Millet, Japanese Echinochloa esculenta 18

Millet, pearl (bajra, bulrush) Pennisetum americanum 18

Millet, proso Panicum miliaceum 18

Mint (all varieties) Mentha spp. 6219

Mulberry for fruit (all varieties) Morus spp. 39

Mulberry for silkworms Morus alba 39

Mushrooms Agaricus spp.; Pleurotus spp.; Volvariella 24

Mustard Brassica nigra; Sinapis alba 433

Nectarine Prunus persica var. nectarina 354

New Zealand flax (formio) Phormium tenax 922

Niger seed Guizotia abyssinica 434

Nutmeg Myristica fragrans 6222

Oats, for fodder Avena spp. (about 30 sp.) 17

Oats, for grain Avena spp. (about 30 sp.) 17 1.1.6

Oil palm Elaeis guineensis 443

Okra Abelmoschus esculentus 229

Olive Olea europaea 442

Onion seed Allium cepa 234 1.8.5

Onion, dry Allium cepa 234 1.2.6

Onion, green Allium cepa 234

Opium Papaver somniferum 931

Orange Citrus sinensis 323

Orange, bitter Citrus aurantium 323

Ornamental plants Various 951

Palm palmyra Borassus flabellifer 992

Palm, kernel oil Elaeis guineensis 443

Palm, oil Elaeis guineensis 443

Palm, sago Metroxylon sagu 992

Papaya (pawpaw) Carica papaya 316

Parsnip Pastinaca sativa 239

Pea, edible dry, for grain Pisum sativum 77 1.3.3

Pea, harvested green Pisum sativum 77

Peach Prunus persica 354

Peanut (groundnut) Arachis hypogaea 42

Pear Pyrus communis 355

Pecan nut Carya illinoensis 369

Pepper, black Piper nigrum 6221

Pepper, dry Capsicum spp. (over 30 sp.) 6211

Persimmon Diospyros kaki; Diospyros virginiana 319

Pigeon pea Cajanus cajan 78 1.3.7

Pineapple Ananas comosus 317

Pistachio nut Pistacia vera 365

Plantain Musa sapientum 312

Plum Prunus domestica 356

Pomegranate Punica granatum 39

Pomelo Citrus grandis 321

Poppy seed Papaver somniferum 439

Potato Solamum tuberosum 51 1.2.1

Potato, sweet Ipomoea batatas 52 1.2.2

Prune Prunus domestica 356

Pumpkin, edible Cucurbita spp. (over 25 sp.) 226

Pumpkin, for fodder Cucurbita spp. (over 25 sp.) 226

Pyrethum Chrysanthemum cinerariaefolium 991

Quebracho Aspidosperma spp. (more than 3 sp.) 992

Queensland nut See Macadamia 369

Quince Cydonia oblonga 355

Quinine Cinchona spp. (more than 6 sp.) 932

Quinoa Chenopodium quinoa 192 1.1.9

Radish Raphanus sativus (inc. Cochlearia armoracia) 239

Ramie Boehmeria nivea 922

Rapeseed (colza) Brassica napus 435

Raspberry (all varieties) Rubus spp. (over 360 sp.) 344

Red beet Beta vulgaris 239

Redtop Agrostis spp. 911

Rhea Boehmeria nivea 922

Rhubarb Rheum spp. 219

Rice Oryza sativa; Oryza glaberrima 13 1.1.2

Rose Rose spp. 952

Rubber Hevea brasiliensis 94

Rutabaga (swede) Brassica napus var. napobrassica 239

Rye Secale cereale 16 1.1.7

Ryegrass seed Lolium spp. (about 20 sp.) 991 1.8.4

Safflower Carthamus tinctorius 436

Sainfoin Onobrychis viciifolia 911

Salsify Tragopogon porrifolius 239

Sapodilla Achras sapota 39

Satsuma (mandarin/tangerine) Citrus reticulata 324

Scorzonera – black salsify Scorzonera hispanica 239

Sesame Sesamum indicum 437

Shea butter (nut) Vitellaria paradoxa 449

Sisal Agave sisalana 922

Sorghum Sorghum bicolor 14

Sorghum, broom Sorghum bicolor 14

Sorghum, durra Sorghum bicolor 14

Sorghum, Guinea corn Sorghum bicolor 14

Sorghum, jowar Sorghum bicolor 14

Sorghum, sweet Sorghum bicolor 183

Soybean Glycine max 41

Soybean hay Glycine max 41

Spelt wheat Triticum spelta 192 1.1.9

Spinach Spinacia oleracea 216

Squash Cucurbita spp. (over 25 sp.) 226

Strawberry Fragaria spp. (over 30 sp.) 345

Sugar beet Beta vulgaris 81

Sugar beet for fodder Beta vulgaris 81

Sugar beet for seed Beta vulgaris 81 1.8.1

Sugarcane for fodder Saccharum officinarum 82

Sugarcane for sugar or alcohol Saccharum officinarum 82

Sugarcane for thatching Saccharum officinarum 82

Sunflower for fodder Helianthus annuus 438

Sunflower for oil seed Helianthus annuus 438

Sunhemp Crotalaria juncea 9213

Swede Brassica napus var. napobrassica 239

Swede for fodder Brassica napus var. napobrassica 239

Sweet corn Zea mays 12

Sweet lime Citrus limetta 322

Sweet pepper Capsicum annuum 6211

Sweet potato Lopmoea batatas 52 1.2.2

Sweet sorghum Sorghum bicolor 183

Tangerine Citrus reticulata 324

Tannia Xanthosoma sagittifolium 59 1.2.8

Tapioca (cassava) Manihot esculenta 53 1.2.3

Taro Colocasia esculenta 59 1.2.8

Tea Camellia sinensis 612

Tef Eragrostis abyssinica 192 1.1.9

Timothy Phleum pratense 911

Tobacco Nicotiana tabacum 96

Tomato Lycopersicon esculentum 223

Trefoil Lotus spp. (about 100 sp.) 991 1.8.6

Triticale for fodder Hybrid of Triticum aestivum and Secale cereale 17

Tung tree Aleurites spp.; Fordii 449

Turnip, edible Brassica rapa 232

Turnip, for fodder Brassica rapa 232

Urena (Congo jute) Urena lobata 9214

Vanilla Vanilla planifolia 6226

Vetch for grain Vicia sativa 79 1.3.8

Walnut Juglans spp. (over 20 sp.), ep. regia 366

Watermelon Citrullus lanatus 224

Wheat Triticum aestivum 11 1.1.1

Yam Dioscorea spp. (over 120 sp.) 54 1.2.4

Yerba mate Ilex paraguariensis 613






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