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Browse 55 published WinHarvest product records classified under Macronutrient Fertilisers. Product pages show only approved public fields; current grade, specification and availability are confirmed through enquiry.
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An acidic PK fertiliser (0-60-20) - phosphoric acid in solid crystalline form. Dissolving to pH ~2.2, it acidifies fertigation water, dissolves bicarbonate scale and keeps drippers…
Ammonium chloride supplies fast ammonium nitrogen with chloride for chloride-tolerant crops (rice, coconut, kiwifruit).
Solid APP provides sequestered, slow-hydrolysing phosphorus that keeps micronutrients in solution - a premium P backbone for clear liquid fertilisers.
Ammonium sulphate crystal (caprolactam grade) delivers ammonium nitrogen with sulphate sulphur in a fully soluble crystal, and doubles as the standard water-conditioning adjuvant…
Steam-granulated ammonium sulphate supplies nitrogen and sulphur in a hard, even granule for topdressing and NPK blending.
Ammonium sulphate nitrate combines fast nitrate and sustained ammonium nitrogen with sulphur in a hard, even granule for accurate spreading.
Calcium acetate offers readily available calcium from an organic acid source, with an organic-registered option.
Micronised calcium carbonate corrects soil acidity fast and supplies calcium, in 5N/100N/250N fineness grades for spreading or suspension.
Calcium chloride dihydrate supplies rapid, fully soluble calcium for fertigation programs and post-harvest firmness dips.
Calcium formate supplies foliar calcium and acidifies feed as a preservative.
Hydrated lime corrects soil acidity fast and treats effluent ponds on farm.
Calcium nitrate 50% solution doses straight into injection systems for calcium and nitrate programs.
Crystalline calcium nitrate tetrahydrate dissolves rapidly and completely - ideal for hydroponic stock solutions and drip systems.
Greenhouse-grade granular calcium nitrate supplies fully soluble nitrate nitrogen and calcium for fertigation and quality programs.
Granular calcium nitrate with co-granulated boron pairs the two nutrients most critical to fruit set, cell walls and storage quality.
Technical DAP supplies concentrated ammonium and phosphate for liquid and soluble fertiliser manufacture.
Di-potassium phosphate is a highly soluble alkaline P-K source for liquid fertiliser manufacture and fertigation.
600-mesh dolomite corrects pH while supplying calcium and magnesium together - fine grind for fast reaction and suspension application.
Granulated seabird guano supplies natural phosphorus, sulphur and organic matter, valued in organic and regenerative programs.
100-mesh seabird guano powder for suspension fertilisers, organic blends and direct soil application.
Natural gypsum improves sodic and dispersive soils and supplies calcium and sulphur without shifting soil pH.
Kieserite (magnesium sulphate monohydrate) provides plant-available magnesium and sulphur in a hard granule suited to blending and direct application.
Quicklime provides the strongest liming action per tonne for rapid soil pH correction (handle with care).
Magnesium acetate offers chloride- and sulphate-free soluble magnesium for specialty liquid formulations.
Magnesium chloride provides fast soluble magnesium through fertigation.
Magnesium nitrate pairs magnesium with nitrate nitrogen in a fully soluble form for fertigation, foliar sprays and greenhouse recipes.
Granular magnesium oxide is the most concentrated magnesium source, releasing steadily in soil - ideal for blends and capital Mg correction.
Magnesium sucrate blends magnesium with sugar-alcohol carriers for gentle, leaf-safe magnesium in suspension and foliar programs. (Specification to be confirmed.)
Anhydrous magnesium sulphate concentrates Mg + S for feed premixes and dry fertiliser blends.
Epsom salt is the universal quick-fix magnesium for foliar sprays, fertigation and feed programs.
Magnesium thiosulphate supplies dissolved magnesium and sulphur in one clear liquid for drip correction without sulphate precipitation.
Technical MAP (fully water-soluble) is the phosphorus backbone of liquid and soluble fertiliser formulations, fertigation and foliar programs.
Corn-fermentation MKP delivers the same 0-52-34 analysis with a plant-derived feedstock story for premium and input-conscious programs.
MKP delivers concentrated phosphorus and potassium with zero nitrogen - the go-to soluble for flowering, fruit fill and late-season quality.
Potassium acetate provides fully soluble, chloride-free potassium for specialty liquid formulations.
Potassium bicarbonate supplies foliar potassium at mild pH and features in organic-permitted powdery-mildew programs.
Potassium carbonate is the alkaline potassium base for liquid fertiliser manufacture and nutrient-solution pH management.
Muriate of potash (Ag grade) is the most economical potassium for broadacre programs and blends.
Tripotassium citrate combines chloride-free potassium with citrate's natural chelating ability for gentle foliar and fertigation use.
Potassium formate offers a chloride-free, high-solubility potassium source for specialty liquid fertiliser work.
Potassium magnesium sulphate delivers three nutrients in one chloride-light granule, ideal where K and Mg run short together.
Potassium nitrate powder pairs nitrate nitrogen with chloride-free potassium in a fully soluble powder - the backbone of greenhouse recipes, fertigation and foliar programs.
Prilled potassium nitrate spreads accurately and blends cleanly, bringing chloride-free potassium plus nitrate nitrogen to topdress and blend programs.
Potassium silicate strengthens cell walls - improving fungal and lodging resistance - while adding potassium.
Granular sulphate of potash delivers chloride-free potassium and sulphur in a hard granule for broadcast and NPK blending on chloride-sensitive crops.
Soluble sulphate of potash powder supplies chloride-free potassium and sulphur for fertigation and foliar programs on quality-sensitive crops.
Granular elemental sulphur oxidises slowly in soil, supplying season-long sulphur and gradually lowering pH in alkaline soils.
TKPP sequesters hard-water ions while supplying P + K in clear liquid fertiliser formulations.
Tri-Kelp blends three seaweed species into one soluble powder, combining auxin, cytokinin and alginate profiles at an economical rate.
Tripotassium phosphate provides alkaline P + K for specialty liquid fertiliser formulation.
Urea ammonium nitrate solution delivers urea, ammonium and nitrate nitrogen in one stable liquid for boom or fertigation application.
Urea formaldehyde powder releases nitrogen over weeks to months via microbial breakdown - low burn, low leaching, ideal for turf and coated blends.
Low-biuret urea (0.3/0.5/0.9% max grades) is safe for foliar programs and sensitive horticulture where standard urea's biuret would burn.
Urea phosphate combines urea N and phosphate P in a strongly acidic crystal that cleans drip systems and doubles as a ruminant feed NPN + P source.
Polymer-coated urea (43-0-0) releases nitrogen through a semi-permeable coating over 90 or 120 days, cutting losses and application passes.
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WinHarvest Sales can confirm current commercial specifications, availability, SDS and COA requirements for the products in this category.
