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Home / Crops & Knowledge / Soil & Sustainability
Nutrient balance and offtake

We have been spending the soil's capital, not its income.

A harvest is an export. Every tonne of cane, wheat or cotton that leaves a field takes nutrient with it. If less goes back than comes off, the difference is drawn from the soil's own reserves — and reserves are finite even in ground that started rich. Pakistan has been running that overdraft for decades. This page sets out what is actually measured, what it means, and where the measurement stops.

1 · The overdraft, in one comparison

This is the whole mechanism. Everything else on the page follows from it.

Potassium: what the crop takes out against what we put back

Pakistani cropping removes an estimated 100 to 150 kg of K₂O per hectare every year. The national average application in 2023 was 1.48 kg per hectare. The blue bar is not a rendering error.

Removed by the crop: 100–150 kg K2O per hectare per year100–150 kgRemoved by the cropevery year, in the harvestApplied as fertilizer: 1.48 kg K2O per hectare1.48 kgApplied as fertilizer2023 national averagekg of K₂O per hectare per year
Removed by the crop Applied as fertilizer

Source · Removal: Wakeel, A. & Magen, H. (2017), Potash Use for Sustainable Crop Production in Pakistan: A Review, International Journal of Agriculture & Biology 19(3). Application: FAOSTAT Fertilizers by Nutrient via Our World in Data (2023), potash per hectare of cropland.

≈ 1%
of the potassium Pakistani crops remove each year is replaced by fertilizer. For every hundred kilograms taken out of the field in the harvest, roughly one kilogram goes back in.
Derived — 1.48 kg/ha applied against a 100–150 kg/ha removal estimate, from the two sources above. The exact ratio depends on which end of the removal range is used; the order of magnitude does not.

Nothing else on this page is surprising once that comparison is understood. Soil that gives up a hundred kilograms and receives one will run down, and the only questions are how fast and how far it has already gone.

2 · Where the soil already is

Published soil surveys, each with its own region, year, sample count and critical level. They are shown separately on purpose.

Share of soils tested below the critical level

Six separate studies. The pattern across them is consistent even though the numbers are not comparable to each other.

0%25%50%75%100%Organic matter — Muzaffargarh · 3,325 samples · 2014: 95% of soils below the critical levelOrganic matterMuzaffargarh · 3,325 samples · 201495%Phosphorus — Hazro, Attock · as cited 2011: 99% of soils below the critical levelPhosphorusHazro, Attock · as cited 201199%Phosphorus — Punjab · 1984 & 1994: 70% of soils below the critical levelPhosphorusPunjab · 1984 & 199470%Boron — Multan citrus orchards · 2024: 71% of soils below the critical levelBoronMultan citrus orchards · 202471%Zinc — Punjab · 2004: 60% of soils below the critical levelZincPunjab · 200460%Potassium — Pakistan · 2017 review: 40% of soils below the critical levelPotassiumPakistan · 2017 review40%
Nutrient / propertyShare below critical levelRegion, year, samplesSource
Organic matterover 95% deficientMuzaffargarh district, Punjab · 3,325 composite samples · published 2014Akram, Z., Hussain, S. & Mansoor, M. (2014), Universal Journal of Agricultural Research 2(7):242–249
Organic mattertypically below 1%Punjab surface soilsAzam (1988); Rashid (1994), as cited in Minhas et al. (2024)
Phosphorus99% poor in available PHazro tehsil, Attock districtas cited in Alvi, S., Khalid, R. & Rashid, M. (2011), Pak. J. Sci. Ind. Res. 54(1):45–47
Phosphorusover 70% deficientPunjab provinceMalik (1984); Rashid (1994), as cited in Minhas et al. (2024)
Boron70.8% of surface soils deficientMultan citrus orchards · 24 orchards · critical level 0.5 mg/kgMinhas, A., Ahmed, N. & Sajid, M. (2024), Journal of Plant and Environment 5(1):71–85
Boron41% of samples deficientMultan districtRashid (1995, 1996)
Zincover 60% deficientPunjab provinceTariq et al. (2004), as cited in Alvi et al. (2011)
Potassium40% of soils deficientPakistan, review of available dataWakeel, A. & Magen, H. (2017), Int. J. Agric. Biol. 19(3)
Why these are not added up into one national figure Each row is a different survey, in a different district or province, in a different year, with a different sample size and — importantly — a different critical level for what counts as deficient. Averaging them would produce a number that looks authoritative and means nothing. What the register supports is a direction, which every study agrees on: Pakistani soils are widely short of organic matter, phosphorus, zinc and boron, and a substantial share are short of potassium.

Source · A national survey of 329 soil samples reported widespread deficiency of zinc and boron followed by iron — Zia et al. (2004), as cited in Alvi et al. (2011).

3 · Why alkaline soil makes all of it worse

Most cultivated ground in Pakistan is calcareous and alkaline, with free calcium carbonate through the profile and pH commonly above 8. That single property drives most of what is on this page. Phosphorus applied to such soil precipitates with calcium into forms the root cannot reach. Zinc, iron and manganese become progressively less soluble as pH rises — which is why the micronutrient deficiencies cluster in exactly the soils with the highest lime content and the lowest organic matter. And surface-applied urea hydrolyses and escapes as ammonia before the crop can take it up.

Low organic matter compounds every one of these. Organic matter holds nutrients against leaching, buffers pH, feeds soil biology and improves structure and water retention. At under 1% there is very little of that buffering left. Pakistani summers above 45 °C accelerate decomposition, and crop residue is generally burned or fed to livestock rather than returned — so the organic fraction is consumed faster than it is replaced, for the same reason the mineral fraction is.

This is the argument for building fertilizer differently rather than simply selling more of it. On soil like this, a share of every bag applied is lost to chemistry before the crop sees it. Raising the amount applied raises the amount lost in proportion. Changing the form, the timing and the placement is what changes the fraction that arrives. The national productivity picture →

4 · What is missing, and we would like it to exist

The measurement gap

There is no published national time series of Pakistani soil nutrient levels in ppm running from the 1980s to today. We looked for one, because it is the chart this page most wants. It does not appear to exist in the public literature.

The reason is given plainly in the standard review of Pakistani potash: "Due to least soil testing facilities, farmers usually don't analyze their soils." Soil testing in Pakistan has been sparse, irregular, and organised district by district rather than as a repeated national panel — so there is no consistent baseline to measure change against.

What exists instead is what is on this page: a well-established depletion mechanism with both of its figures published, and a set of separate surveys showing where the soil has ended up. The trend is inferred from the arithmetic, not read off a measured national curve, and we would rather say so than draw a line that implies a dataset nobody has collected.

A National Soil Health Atlas — periodic, consistent, district-level, publicly available — is the single piece of infrastructure that would settle this. Pakistan does not have one. Until it does, every conversation about balanced nutrition in this country is conducted partly in the dark, and that includes ours.

5 · What VAN does about it

What the soil is short ofWhat that requiresWhat we make
PotassiumPotash applied in the crop's uptake window, in a form that can be delivered through fertigation rather than only at land preparation Vital Potash · SOP · V-Potash Plus
Available phosphorusPhosphate engineered against calcium fixation rather than simply applied at a higher rate VAN NP Range · Green Phosphate
Zinc and boronChelated micronutrients that stay available at high pH, applied at the growth stage that needs them V-Zinc · VL-Boron · VL-Micromix
Organic matterCarbon returned to the soil, and nutrient recovered from residue streams instead of burned V-Compost · Humi Grow · V-Transform · Circular Economy
Nitrogen that stays putCoated, controlled-release nitrogen on ground where plain urea volatilises Vital Urea
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