PlantCheck™ is Australia’s most comprehensive leaf nutrient checking service. Building on the latest research over the last 5 decades it has become the gold standard in farm leaf testing. PlantCheck™ is designed to work out the nutrients that are deficient and also the nutrients that if boosted will increase production and quality. This approach allows the farmer to target inputs to give maximum returns instead of guessing and wasting money on unnecessary inputs.


Free PlantCheck™ report just pay for the standard laboratory analysis fees.

Key Benefits

• Learn exact nutritional requirements for your crop.
• Save on fertiliser costs as only applying what is required.
• Reduce fertiliser run-off.
• Increase yield and quality.
• Increase the crops natural defence mechanisms due to correct nutrition.
• Low cost.
• Identify crop yield/quality limitations.
• Your levels graphed against scientifically recognised ideal levels so it is easy to see what is required to correct issues.
• Practical recommendations to correct any issues and boost yield/quality.

Testing of all the below nutrients but one of Australia’s leading laboratories.

• Total Nitrogen
• Total Carbon
• Total Sulfur
• Sodium
• Potassium
• Calcium
• Magnesium
• Phosphorus
• Silicon
• Cobalt
• Molybdenum
• Zinc
• Manganese
• Iron
• Copper
• Boron

Graphed against ideal levels so it is easy to the nutrients that need attention. A practical recommendations report is also provided so you can go into the field and quickly rectify any issues that have arisen.


Before you start

We have two main diagnostic service options. Please read the benefits and requirements of both so you can pick the best option/s (SoilCheck™/PlantCheck™) for you.




•  Long term soil correction (soil balancing).
•  Reduce the amount of annual fertiliser input costs.
•  A balanced soil system builds healthier and resistant plants.


•  Boost health/production of current crop.
•  Ideal if you suspect a nutrient deficiency in crop.
•  Ideal if you have an important growth/reproductive stage in current crop.


•  Need to be able to apply powder fertilisers and soil conditioners to the soil.


•  Need to be able to apply fertiliser via foliar spray or fertigation (fertiliser in irrigation).


If SoilCheck™ seems more ideal please visit or continue reading the PlantCheck™ information on this page.

How to Sample

Important: As a general rule please ensure approximately 200 grams (about 2 handfuls) of fresh plant material is sent to the

Important: Take at least 20 samples from different locations in the field. Do not sample fields within 3-5 days after being sprayed with pesticides or foliar nutrients.

Important: The below time of year/growth stages are just a guide. Often sampling is done throughout the whole growing season.

Important: If the plant you are sampling is not shown below, sample the youngest fully expanded leaves available.

Cereals – All the above ground portion clipped at 5-8 cm height.
Maize – Fully developed leaves from 40 cm high.
Sugar Beet – Fully developed and matured leaves 50 days after germination.
Potato – Most recent fully developed leaves from 1 week after 100% emergence.
Oilseed Rape – Most recent fully developed leaves from 20 cm high to early bloom.
Legumes – Uppermost fully developed leaves prior to blossom formation. (peas, beans)
Grass / Turf – All the above ground portion clipped at 5 cm height. For turf grasses this is lower or take a sample from any recent mowing.
Fruit Trees – Middle leaves from current years growth.
Soft Fruit – Youngest fully developed mature leaves. Early to mid-season.
Trees/Shrubs – Fully developed leaves from current years growth.
Avocado – Leaves- recently expanded, mature and healthy. Non-fruiting terminals approx. 4 – 5 months old.
Banana – Active growth from medium sized suckers. Strips 20 cm wide from each side of midrib from the centre section of the third fully emerged leaf.
Citrus – Healthy, mature leaves from middle of non-fruiting terminals of previous spring flush.
Coffee – 3rd or 4th pair of leaves from tip of actively growing and bearing branches.
Custard Apple – Youngest mature leaf (4th or 5th leaf back from growing point), from non-fruiting shoots only.
Mango – Latest mature leaves just prior to flowering.
Macadamia – 6 – 7 month old mature leaves from 2nd whorl of current season’s growth, from non-flushing terminals.
Olives – Fully expanded basal to mid-shoot leaves.
Peach and Nectarine – Mature leaves from mid-portion of shoot, current season’s terminal growth.
Pecan – Pairs of leaflets from midway along youngest fully expanded leaf on fruiting wood. Select leaflets from branches up to 2 m above the ground.


Pricing, Payment and Postage

PlantCheck™ Laboratory Test and Report (PA-PACK-001) $55.00 Inc. GST per sample.

Please fill in your credit card details on the sample form HERE (Microsoft Word version HERE) or include a cheque (payable to “Environmental Analysis Laboratory”) for the total.  Please complete the other parts of the sample form to be included with your sample/s.

Click here to download Sample Form

Express Post samples to the below address with the sample form to:
Environmental Analysis Laboratory
Priority BioStim Customer
PO Box 157
Ph: (02) 6620 3678 Fax: (02) 6620 3957

Important: It is best to express post samples on Monday so they are not in post over the weekend. The laboratory may take up to 5 days to send us the results.


List of Crops / Trees with Ideal Nutrient Levels

Common names:

Adzuki bean, Aleppo pine, Alfalfa, Almond, Alpine ash, Alsike clover, Annual medic, Annual ryegrass, Apple, Apricot, Arm grass, Asparagus, Atro, Australian red cedar, Australian rose gum, Australian wax flower, Avocado, Azalea, Bahia grass, Balansa clover, Banana, Banksia, Barley, Barley grass, Barrel medic, Bean (french, green, snap, dwarf, bush, navy bean and other beans), Beefwood, Beetroot, Benguet pine, Bermudagrass, Berseem clover, Birdsfoot trefoil, Black bunched speargrass, Black gram, Black pine, Black walnut, Blackbutt, Blackcurrant, Blackwood, Blueberry, Bluegrass, Boronia, Boston fern, Broccoli, Brown barrel, Brown salwood, Brush box, Brussels sprouts, Buckwheat, Buffalograss, Buffel grass, Bunched speargrass, Burr medic, Cabbage, Canary Island pine, Canola, Capica stylo, Capsicum (bell, cherry, cone, cluster, chilli, sweet), Caribbean pine, Caribbean stylo, Carnation, Carrot, Cashew, Cassava, Cattleya, Caucasian Clover, Cauliflower, Celery, Centro, Cereal Rye, Cherry, Chestnut, Chickpea, Chicory, Chloris, Chrysanthemum, Citronella Java, Citrus spp., Cluster clover, Coachwood, Cocksfoot, Coconut, Coffee, Columbus grass, Common lespedeza, Corn (maize), Corsican pine, Cotton, Cottonwood, Cowpea, Creeping indigo, Cucumber, Custard apple, Cyclamen, Cymbidium orchid, Dallis grass, Dalrymple vigna, Dieffenbachia, Douglas fir, Dunn’s white gum, Elephant grass, English pea, Faba bean, Field bean, Field pea, Fig, Filbert, Flatpea, Flax, Flooded gum, Fodder beet, Freesia, Gamba grass, Garlic, Geranium, Ginger, Gladiolus, Glycine, Glycine pea, Golden-beard grass, Grapevine, Great brome grass, Greater lotus, Green couch, Green gram, Green panic grass, Greenleaf Desmodium, Grevillea, Guar, Guava, Guinea grass, Hazel-nut, Hibiscus, High bush, Holly, Hoop pine, Hops, Horsetailcasuarina, Hydrangea, Impatiens, Impulse violet, Indian couch, Italian ryegrass, Ixodia daisy, Japanese mint, Jaragua grass, Johnsongrass, Karri, Kenaf, Kentucky bluegrass, Kenya white clover, Khasya pine, Kikuyu grass, Kiwi fruit, Korean lespedeza, Koronivia grass, Lablab bean, Lemon-scented gum, Lentil, Lettuce, Leucadendron (Silvan Red/Safari Sunset), Leucaena, Linola, Linseed, Loblolly pine, Lodgepole pine, Longleaf pine, Lotononis, Lucerne, Lupin, Lychee, Macadamia, Macrocephala stylo, Mahogany, Maidenhair fern cv. elegans, Maku, Mango, Maritime pine, Meadow fescue, Messmate, Mitchell grass, Molasses grass, Mountain ash, Mulgal grass, Murex medic, Mustard, Native pea, Navy bean and other beans, Needlewood, Norfolk Island Pine, Northern black wattle, Oats, Oil Palm, Olive, Onion, Orchard grass, Orchid, Orchid, Pangola, Papaw, Paspalum, Passionfruit, Pea, Peach, Peanut, Pear, Pearl millet, Pecan, Perennial ryegrass, Persian clover, Persimmon, Petunia, Phalaris, Phasey bean, Pigeon pea, Pineapple, Pistachio, Plicatulum, Plum, Poinsettia, Poplars (incl. hybrids), Potato, Prairie grass, Puero, Pumpkin (marrow, squash), Purple bean, Purple-top Rhodes, Pyrethrum daisy, Queen protea, Queensland maple, Radiata pine, Rapeseed, Raspberry (red), Red clover, Red gum, Rhodes grass, Rice, River red gum, River sheoak, Rockmelon (musk, Persian, honeydew Casaba melons), Rose clover, Rose (floribunda), Rose (hybrid tea), Rubber, Ruzi grass, Rye, Sabi grass, Safflower, Saltmarsh grass, Sericea, Sesame, Setaria, Shaftal clover, Sheda grass, Shining gum, Shrubby stylo, Signal grass, Silky oak, Silky umbrella grass, Silver wattle, Silverleaf Desmodium, Siratro, Slash pine, Smooth brome grass, Smooth-stalked meadow grass, Sorghum, Sorghum-sudangrass, South African Pigeon Grass, Soybean, Spinach, Spotted Gum, Sticky Stylo, Strawberry, Strawberry Clover, Stylo, Subterranean Clover, Suckling Clover, Sugar beet, Sugar cane, Summer grass, Sunflower, Swamp sheoak, Swamp Yate, Swan River pea bush, Sweet corn, Sweet potato, Sydney blue gum, Tall (woolly) finger grass, Tall Fescue, Tall Wheat Grass, Tallowwood, Tamarillo, Tasmanian blue gum, Tea, Tea-Tree, Teak, Timor Rose Gum, Timothy Grass, Tobacco, Tomato, Townsville Stylo, Trembling aspen, Triticale, Umbrella Plant, Urochloa, Wallaby grass, Walnut, Waratah (New South Wales), Watermelon, Wattle, Wattle, West Indian cedar, Wheat, Whistling pine, White beech, White clover, Wild cowpea, Wimmera ryegrass, Winged bean, Wiregrass, Woolly burr medic, Yellow serradella, Zinnia

Scientific Names:

Acacia auriculiformis, Acacia cyanophylla, Acacia dealbata, Acacia decurrens, Acacia mangium, Acacia melanoxylon, Acacia saligna, Acacia spp., Actinidia chinensis, Allium cepa, Allium sativum, Ammi visnaga, Anacardium occidentale L., Ananas comosus, Andropogon gayanus, Annona spp., Apium graveolens var. dulce, Arachis hypogaea, Araucaria cunninghamii, Araucaria heterophylla, Aristida armata, Asparagus officinalis, Avena sativa, Banksia ericifolia, Banksia ntegrifolia, Beta vulgaris, Boronia megastigma Nees, Bothriochloa pertusa, Brachiaria brizantha, Brachiaria decumbens, Brachiaria humidicola, Brachiaria ruziziensis, Brachysema lanceolatum, Brassica campestris, Brassica juncea, Brassica napus, Brassica oleracea L. var. capitata, Brassica oleracea var. botrytis, Brassica oleracea var. gemmifera, Brassica oleracea var. italica, Bromus diandrus, Bromus inermis, Bromus wildenowii, Buchloe dactyloides, Cajanus cajan, Caladium x hortulanum Birdsey, Camellia sinensis, Capsicum annuum var. annuum, Carica papaya, Carthamus tinctorius, Carya illinoensis, Castanea sativa, Casuarina cunninghamania, Casuarina equisetifolia, Casuarina glauca, Cattleya sp., Cedrela odorata, Cenchrus ciliaris, Centrosema pubescens, Ceratopetalum apetalum, Chamelaucium spp., Chloris barbata (inflata), Chloris gayana, Chrysanthemum morifolium, Chrysopogon fallax, Cicer arietinum, Cichorium intybus, Citrullus lanatus, Citrus spp., Cocos nucifera, Coffee arabica, Corylus avellana, Corymbia, Cucumis melo, Cucumis sativus, Cucurbita pepo, Cyamopsis tetragonoloba, Cyclamen persicum, Cymbidium sp., Cymbopogon winterianus, Cynodon dactylon, Cyphomandra betacea, Dactylis glomerata, Danthonia richardsonii, Daucus carota L., Desmodium intortum, Desmodium uncinatum, Dianthus caryophyllus, Dichanthium annulatum, Dieffenbachia exotica, Digitaria ammophila, Digitaria ciliaris, Digitaria eriantha (decumbens and smutsii), Diospyros spp., Dolichos lablab, Elaeis guineensis, Elytrigia pontica, Eucalyptus camaldulensis, Eucalyptus delegatensis, Eucalyptus diversicolor, Eucalyptus dunnii, Eucalyptus fastigata, Eucalyptus globulus, Eucalyptus grandis, Eucalyptus microcorys, Eucalyptus nitens, Eucalyptus obliqua, Eucalyptus occidentalis, Eucalyptus pilularis, Eucalyptus regnans, Eucalyptus saligna, Eucalyptus tereticornis, Eucalyptus urophylla, Eucalyptus [syn. Corymbia] Citriodora, Eucalyptus [syn. Corymbia] maculata, Euphorbia pulcherrima), Fagopyrum esculentum, Festuca arundinacea, Festuca pratensis, Ficus carica, Flindersia brayleyana, Fragaria sp., Freesia refracta, Gladiolus tristis, Glycine max, Glycine tabacina, Gmelina arborea, Gossypium hirsutum, Grevillea spp., Grevillea robusta, Hakea leucoptera, Helianthus annuus, Heteropogon contortus, Hevea brasiliensis, Hibiscus rosa-sinensis, Hibiscus cannabinus, Hordeum distichon, Hordeumlepoinum, Hordeum vulgare, Humulus lupulus, Hydrangea macrophylla, Hyparrhenia rufa, Ilex aquifolium, Impatiens wallerana, Indigofera spicata, Ipomoea batatas, Ixodia achillaeioides ssp. alata, Juglans nigra L., Juglans regia, Lablab purpureus (Dolichos lablab), Lactuca sativa, Lathyrus sylvestris, Lens culinaris, Leptospermum spp., Lespedeza (cuneata and stipulacea and striata), Leucadendron spp., Leucaena leucocephala, Linum usitatissimum, Litchi chinensis, Lolium multiflorum, Lolium peranne, Lolium rigidum, Lophostemon confertus, Lotononis bainesii, Lotus corniculatus, Lotus pedunculatus, Lupinus albus, Lupinus angustifolius, Lupinus cosentinii, Lycopersicon esculentum, Macadamia integrifolia, Macadamia tetraphylla, Macroptilium atropurpureum, Macroptilium lathyroides, Adiantum raddianum cv. Elegans, Malus domestica, Mangifera indica, Manihot esculenta, Medicago minima, Medicago murex, Medicago polymorpha (denticulata), Medicago sativa, Medicago truncatula, Melinis minutiflora, Mentha arvensis, Musa spp., Neonotonia wightii, Nephrolepis exaltata, Nicotiana tabacum, Olea europea, Olearia phlogopappa, Ornithopus compressus, Oryia sativa, Panicum maximum, Paspalum dilatatum, Paspalum notatum, Paspalum plicatulum, Passiflora spp., Pelargonium zonale, Pennisetum clandestinum, Pennisetum glaucum, Pennisetum purpureum, Persea americana, Petunia hybrida, Phalaenopsis sp., Phalaris aquatica, Phaseolus vulgaris, Phleum pratense, Pinus brutia, Pinus canariensis, Pinus caribaea var. Hordurensis, Pinus contorta, Pinus elliottii var. elliottii, Pinus halepensis, Pinus insularis, Pinus kesiya, Pinus nigra, Pinus palustris, Pinus pinaster, Pinus radiata, Pinus taeda, Pistacia vera, Pisum sativum, Pisum sativum, Poa pratensis, Poinsettia (Euphorbia pulcherrima), Populus deltoides, Populus misc, Populus tremuloides, Protea spp., Prunus amygdalus, Prunus armeniaca, Prunus avium, Prunus persica, Prunus spp., Pseudotsuga menziesii, Psidium guajava, Psophocaryus tetragonolobus, Puccinellia ciliata, Pueraria phaseoloides, Pyrus communis, Rhododendron indicum, Ribes nigrum, Rosa spp., Rosa floribunda, Rubus idaeus, Saccharum spp., Schefflera actinophylla, Secale cereale, Sesamum indicum, Setaria sphacelata, Solanum tuberosum, Sorghum almum, Sorghum bicolor, Sorghum bicolor x S. sudanense, Sorghum halepense, Sorghum vulgare, Spinacia oleracea, Stylosanthes capitata, Stylosanthes guianensis, Stylosanthes hamata, Stylosanthes humilis, Stylosanthes macrocephala, Stylosanthes scabra, Stylosanthes viscosa, Swietenia macrophylla, Tanacetum cinerariifolium, Tectona grandis, Telopea speciossissima, Thinopyrum ponticum (Elytrigia pontica), Thyridolepis mitchelliana, Toona ciliata, Trifolium alexandrinum, Trifolium ambiguum, Trifolium balansae, Trifolium dubium, Trifolium ftagiferum, Trifolium glomeratum, Trifolium hirtum, Trifolium hybridum, Trifolium michelianum, Trifolium pratense, Tiifolium repens, Trifolium resupinatum, Trifolium semipilosum, Trifolium subterraneum, Triticale (X Triticosecale), Triticum aestivum, Triticum durum, Urochloa mosambicensis, Urochloa oligotricha, Vaccinium corymbosum, Vicia faba, Vigna angularis, Vigna luteola, Vigna mungo, Vigna radiata, Vigna unguiculata, Vigna vexillata, Vitis vinifera, Zea mays, Zea mays var. rugosa, Zingiber officinale, Zinnia elegans.