Calculate your exact lime requirements, basal fertilizer bags, top-dressing split schedules, and organic manure rates based on your crop and field size.
Don't guess with fertilizer prices! Check whether your soil is sour (acidic), calculate exact 50kg bags needed, and plan application timing so no fertilizer is wasted.
If soil is sour (acidic), up to 60% of expensive chemical fertilizer gets locked in the dirt where plant roots cannot reach it. Applying agricultural lime to fix soil pH unlocks natural soil fertility and doubles your fertilizer efficiency.
Healthy soil is a farmer's most valuable asset. Learn how soil pH, N-P-K nutrients, organic humus, and liming work together to produce bountiful harvests.
Soil pH measures how sour (acidic) or sweet (alkaline) your ground is on a scale from 1 to 14. A pH of 6.0 to 6.8 is the ideal sweet spot for almost all vegetables, grains, and legumes. In acidic soil (pH below 5.5), plant roots cannot absorb phosphorus or nitrogen, even if you pour expensive fertilizer onto the field.
Agricultural lime is finely crushed natural limestone rock. When mixed into acidic soil, it neutralizes acid hydrogen ions, raises soil pH, and adds vital Calcium and Magnesium. Lime takes 4 to 6 weeks to react in moist soil, so always broadcast and plow it in well before planting.
What it does: Nitrogen builds lush green leaves, strong vegetative stems, and plant proteins.
Signs of lack: Pale yellowing of older bottom leaves starting in an inverted V-shape from the tip.
Sources: Ammonium Nitrate (AN), Urea, CAN, cured cattle and poultry manure.
What it does: Phosphorus fuels root development, early seedling establishment, and flowering.
Signs of lack: Stunted dark green plants with purple or reddish coloring under leaves.
Sources: Single Superphosphate (SSP), Compound D, Triple Superphosphate (TSP).
What it does: Potassium gives plants strong disease resistance, firm fruit skins, sweet flavour, and drought tolerance.
Signs of lack: Burnt, scorched edges on outer leaf margins.
Sources: Muriate of Potash (MOP), Potassium Sulfate (SOP), clean wood ash.
Humus and compost act like a sponge in your soil. Adding animal manure, green cover crops, or crop residue increases water holding capacity by 400%, feeds beneficial soil earthworms and microbes, and prevents sandy soils from losing nutrients during heavy rain.
A laboratory soil test is only as good as the sample you send. Follow these 5 simple steps to get an accurate field sample:
Nitrogen fertilizer dissolves very rapidly in water. If you apply all your top-dressing in one big dose and heavy rain falls, 40-50% of the nitrogen will wash deep down past the roots (leaching) and be lost forever. Applying half at knee-high and half at early flowering ensures the plant has fresh food when its growth demand is highest.
Yes! Fresh chicken manure is very high in raw uric acid and ammonia salts. If applied fresh next to seeds or young roots, it will draw moisture out of the plant and "burn" the crop. Always let poultry manure compost and cure under shade for 4 to 8 weeks before applying it to your fields.
Calcitic Lime contains pure Calcium Carbonate and is used when your soil has enough magnesium. Dolomitic Lime contains both Calcium Carbonate and Magnesium Carbonate. If your soil test shows low magnesium or if you farm on light sandy soils, always choose Dolomitic Lime to supply both calcium and magnesium together.
Heavy rains cause two problems: 1. Waterlogging: water fills all the air pores in the soil, suffocating the roots so they cannot breathe or absorb nutrients. 2. Nitrogen Leaching: water washes mobile nitrate out of the topsoil. Once the water drains and the soil dries out slightly, apply a light nitrogen top-dressing to stimulate rapid green recovery.