01 · Nitrogen
pH above 8, 69.1% of samples
the condition · from the survey
“Above pH 8, surface urea leaves as ammonia before the crop can use it. What dissolves moves down with the irrigation water.”
From van.com.pk · Home · the 3 losses
Soil Atlas · Punjab
770,160 samples. One condition.
Punjab tested 770,160 soil samples for pH, organic matter, phosphorus, potash, calcium carbonate and 5 micronutrients. Read together, they describe one soil: alkaline, calcareous, almost without carbon, short of phosphorus, potash, zinc and boron in most of them, and never tested for sulfur.
VAN feeds the soil as well as the crop.
8 things VAN already makes or already publishes against the condition these samples describe. Each one goes somewhere.
SulfurGreen Sulfur, 70% sulfur WDG, and Vital Urea, 13% sulfur in every granuleHumicPotassium humate, for ground under 1% carbonZincZinc 21%, granular, for soil that locks it upMicronutrientsZn 5 · Fe 2 · Mn 2 · Cu 1, in one foliar passIron10-44-0 carrying iron, manganese and copperRight rate, time, placeHow it is delivered is part of the productCrop-specificA plan per crop, stage by stage, per acreSoil-specificYour district, and the ground inside it
Reading Punjab, all 36 districts · 770,160 samples▸ press one to draw the map on it
Sulfur0samples tested, in any district filenever measured
The large figure is the share of samples past Punjab's own working threshold. The chip classifies the province mean against VAN's 5-band soil-test table, the same one printed on a VAN soil report. Two different questions, so they can disagree, and where they do the tile says so.
Source · Punjab soil testing programme · 36 district workbooks · 770,160 valid samples · c. 2016–2018. Deficiency shares are of samples below Punjab’s working thresholds, not a diagnosis of any field. Read this before quoting ›
Punjab, and only Punjab. All 770,160 samples come from the province's own 36 district workbooks. Sindh, Khyber Pakhtunkhwa and Balochistan were never surveyed at this depth, which is itself a finding about how Pakistan knows its own soil. Punjab carries most of the country's cropped area, so Punjab's figures carry the national argument, though they are not national figures.
The living map
VAN built these maps from the data, so the soil can be seen, and answered.
8 analytes, one ground, in 2 groups: the 4 a partner formulates against, and the 4 that describe what those 4 land in. The map cycles through them once when it comes into view, then rests on phosphorus. Hover a square for its district and value; tap one to hold that district in focus. The readings at the top of the page and the matrix below both drive it.
▸ pick an analyte · Play / Pause · hover · tap
NutrientsThe ground
▸ Pick an analyte · hover · tap for a district
Phosphorus, available · ppm · rust where short (below 7 ppm), green towards adequate (15)
3.012.0 ppm
7.5
Every square is the mean of the georeferenced samples inside it, no boundary file, no interpolation. Switch the analyte and watch the same ground re-colour. 4,911 cells of 0.05°, no boundary file, no interpolation, no district polygons.
Source · Punjab soil testing programme · 36 district workbooks · 770,160 valid samples · c. 2016–2018. Read this before quoting ›
Reading it
On this map rust means short of the nutrient, and most of Punjab reads rust.
The map opens on phosphorus, and almost none of it is green: 97.9% of samples sit below the adequate level of 15 ppm, 59.1% below 7 ppm. Potash, zinc and boron read the same way, rust below the working threshold and green above.
Switch to the ground those nutrients land in and the province turns gold to rust on pH: 96.1% of samples above 7.5, 69.1% above 8.0. Organic matter reads pale across nearly the whole province, mean 0.61%, with 90.2% below 0.86%. Calcium carbonate deepens to navy where the ground is most calcareous, and EC turns rust where it is saline (9.0% of samples above 4 dS/m).
Sulfur has no map, because it was never measured. See the analyte list below.
36 districts
36 districts, one gradient.
Every district a row, every parameter a column, every cell on VAN's own 5-band scale. Sort by a column to see who is worst on it, search for your own, and tap a cell to take that district and that parameter to the map above.
| 770,160 | ||||||||
|---|---|---|---|---|---|---|---|---|
| 23,220 | ||||||||
| 27,501 | ||||||||
| 24,614 | ||||||||
| 17,935 | ||||||||
| 8,536 | ||||||||
| 51,556 | ||||||||
| 27,063 | ||||||||
| 14,037 | ||||||||
| 12,002 | ||||||||
| 20,887 | ||||||||
| 33,871 | ||||||||
| 11,963 | ||||||||
| 16,700 | ||||||||
| 13,330 | ||||||||
| 25,557 | ||||||||
| 18,131 | ||||||||
| 26,676 | ||||||||
| 28,703 | ||||||||
| 28,233 | ||||||||
| 10,752 | ||||||||
| 31,103 | ||||||||
| 19,972 | ||||||||
| 14,757 | ||||||||
| 23,642 | ||||||||
| 20,392 | ||||||||
| 31,684 | ||||||||
| 9,396 | ||||||||
| 14,757 | ||||||||
| 21,511 | ||||||||
| 12,032 | ||||||||
| 13,231 | ||||||||
| 42,094 | ||||||||
| 11,092 | ||||||||
| 25,197 | ||||||||
| 12,869 | ||||||||
| 25,164 |
How badCriticalWeakAverageModerateHealthy
The bands are VAN's own 5-band soil-test table, the same one printed on a VAN soil report, read against the district mean. Calcium carbonate has no row in that table, so it carries a value and no colour. Copper and manganese have 3 bands there rather than 5. N.d. = not determined; Jhelum returns no valid zinc. Tap any cell to take that district and that parameter to the map and the readings above.
Province
Punjab, all 36 districts
770,160 samples · mean pH 8.22 · OM 0.61% · P 6.6 ppm · K 132 ppm · Zn 1.25 ppm · B 0.59 ppm · CaCO₃ 6.53%
pH769,645 in range · count per bin
Organic matter769,843 in range · count per bin
Available phosphorus770,142 in range · count per bin
Share below Punjab’s working threshold
shares of samples, not a diagnosis of any field
Texture, as recorded
share of samples by class
loam78.8% · 596,936
sandy loam10.7% · 81,427
clay loam6.5% · 49,492
heavy loam1.3% · 9,693
heavy clay0.5% · 3,635
sand0.4% · 3,139
other spellings1.7% · 13,241
Source · Punjab soil testing programme · 36 district workbooks · 770,160 valid samples · c. 2016–2018. Thresholds: Punjab working thresholds: organic matter low < 0.86%, available P low < 7 ppm (adequate ≥ 15), available K low < 180 ppm, Zn low < 1.0 ppm, B low < 0.5 ppm; EC > 4 dS/m saline. Read this before quoting ›
One level down
Pick your district above and this reads the ground inside it.
The survey is not only district averages. It carries 4,911 cells of about 5.5 by 4.8 kilometres, roughly 6,600 acres each, and every district has its own. That is closer to a neighbourhood than to a district, and it is where a district average starts to fall apart.
Relations
How one variable moves another, and where it does not.
Pick what to group the samples by and what to read across the groups. Where the evidence page recorded a verdict, it is shown as written. Including the one that does not hold.
▸ change X and Y · the chart redraws
X · group the samples by
Y · and read the mean of
Mean calcium carbonate by pH band · Punjab
979 samples below pH 7.0 are not drawn (the 4 bands shown carry 99.9% of the province).
Holds
Carbonate drives alkalinity
Province series · 3.41 → 4.86 → 6.91 → 7.41 % CaCO₃
Mean calcium carbonate rises monotonically across every pH band. The alkalinity is calcareous in origin, exactly as expected.
Source · Punjab soil testing programme · 36 district workbooks · 770,160 valid samples · c. 2016–2018. Observational; establishes conditions, not mechanism. Read this before quoting ›
The 6 pairs with a verdict:
These are observational district data, not a controlled experiment. 2 relationships hold cleanly, 1 holds with a limit, 1 is reported without explanation, and 1 widely-assumed relationship does not appear. Stated here because it is the one a technical reader will look for.
The analyte list
13 determinations, and no test for sulfur.
Every district workbook carries the same 13 columns, and sulfur is not one of them. The nutrient VAN’s programmes place twice in wheat alone was never on the testing schedule.
The 13 determinations, and the one that is missing.
province meansSaturation percentage36.2%
Texture classloam · 78.8% of texture-tested samples
Electrical conductivity2.07 dS/m
pH8.22
Organic matter0.61%
Phosphorus, available6.62 ppm
Potash, available132 ppm
Calcium carbonate6.53%
Zinc1.25 ppm
Copper0.94 ppm
Iron3.42 ppm
Manganese1.90 ppm
Boron0.59 ppm
Sulfurnot determined
Sulfur, not determined
Sulfur appears in no district file, in no column, at any point in the sampling programme. Sulfur was left off the testing schedule, so no result for it exists. Because it is never measured, it is never reported as deficient and it never enters a fertiliser plan.
Sulfur is in VAN’s published programmes. The wheat plan alone places Green Sulfur at germination and again at early growth. Sulfur appears in none of the 770,160 determinations.
Source · Punjab soil testing programme · 36 district workbooks · 770,160 valid samples · c. 2016–2018. Copper, iron, manganese and saturation percentage are province means from the same module. Texture is the share of the commonest recorded class, out of the 757,563 samples that carry a texture class at all; 12,597 of the 770,160 do not, and are not counted either way. Read this before quoting ›
VAN and the condition
What VAN builds against it.
The survey gives the condition. The mechanism sentences are VAN’s own published copy. No performance figure is claimed for any product.
02 · Phosphate
Calcareous soil. Mean CaCO₃ 6.53%, rising with pH
the condition · from the survey
“Calcareous soil binds phosphate with free calcium and takes most of it back before the root arrives.”
From van.com.pk · Home · the 3 losses
03 · Potash
87.8% below 180 ppm. Lowest on sandy loam
the condition · from the survey
“Pakistan applies 83 kg of nitrogen for every 1 kg of potash, so the crop draws potash from the soil’s own reserve.”
From van.com.pk · Home · the 3 losses
04 · Zinc
59.0% below 1.0 ppm. Falls as pH rises
the condition · from the survey
“In Punjab’s alkaline, high-pH soils, zinc is chemically fixed as Zn²⁺-phosphate or zinc adsorbed on calcium carbonate, making it unavailable to roots even when total soil Zn is adequate.”
From van.com.pk · Wheat programme · deficiency notes
05 · Organic matter
90.2% below 0.86%. Mean 0.61%
the condition · from the survey
“Concentrated humate with fulvic acid and potash for fertigation and foliar use on soils under 1% organic matter.”
From van.com.pk · Formulation library · BIO-H50F
06 · Boron
51.7% below 0.5 ppm
the condition · from the survey
“Vital Potash, N 11 · K₂O 44, coated with boron in 2 forms.”
From van.com.pk · Products
07 · Sulfur
Not determined in any of 770,160 samples
the condition · from the survey
“Sulfur Coated Urea · N 32% min · S 13% min. Green Sulfur · Sulfur 70% WDG.”
From van.com.pk · Products
The survey gives the condition. The mechanism sentences are VAN’s own published copy. No performance figure is claimed for any product. Condition figures: Punjab soil testing programme · 36 district workbooks · 770,160 valid samples · c. 2016–2018.
What this ground costs the country
On this soil, adding more product does not solve the problem.
Punjab's ground is alkaline and calcareous. 96.1% of samples above pH 7.5, mean carbonate 6.53%. On that soil, nutrient applied per acre has risen by 68% since 2000 while wheat yield rose by 31%. Roughly 1 kg of applied nitrogen in 4 reaches the crop.
What changes the outcome is the form the nutrient arrives in and where it is put, not the tonnage.
The nutrition Pakistan pays for →Read this before quoting
Method & caveats
36 district workbooks from the Punjab soil testing programme, each row one georeferenced sample carrying district, tehsil, markaz, union council and mauza identifiers alongside the laboratory determinations. Every row was read; no sub-sampling. Records without a valid pH were excluded; 770,160 remained. Province figures are weighted by district sample count.
Age
The sampling window is roughly 2016–2018. These figures describe a structural baseline, not present-day status.
Observational
Survey data with no controlled treatments. It establishes conditions with very high confidence. It cannot establish mechanism, for that, controlled and peer-reviewed work is the appropriate evidence.
Thresholds
Deficiency shares use Punjab’s working thresholds: organic matter below 0.86%, available phosphorus below 7 ppm (adequate at 15), available potash below 180 ppm, zinc below 1.0 ppm, boron below 0.5 ppm.
Repairs
The Sheikhupura workbook carries a duplicated header column; it was re-parsed with the offset corrected. Jhelum returns no valid zinc data. Physically impossible values were bounded before averaging.
Bounds and repairs, as recorded in the module. Punjab soil testing programme, 36 district workbooks, georeferenced to plot level, sampling window c. 2016–2018; every row read, no sub-sampling; records without a valid pH excluded; physically impossible values bounded before averaging (pH 0–14, OM 0–10%, P 0–200 ppm, CaCO3 0–100%, K 0–3000 ppm, Zn 0–50 ppm, B 0–20 ppm, EC 0–100 dS/m). Province figures weighted by district sample count. Sheikhupura workbook re-parsed with its duplicated header column corrected. Jhelum returns no valid zinc data. Sulfur is not determined in any file.
Thresholds. Punjab working thresholds: organic matter low < 0.86%, available P low < 7 ppm (adequate ≥ 15), available K low < 180 ppm, Zn low < 1.0 ppm, B low < 0.5 ppm; EC > 4 dS/m saline.
770,160 valid samples across 36 districts. Analytes determined: Saturation percentage · Texture class · Electrical conductivity · pH · Organic matter · Phosphorus (available) · Potash (available) · Calcium carbonate · Zinc · Copper · Iron · Manganese · Boron. Not determined: Sulfur.
Your own field
A survey mean is not your soil test.
These are district means over samples taken c. 2016–2018. For a plan against your own field, VAN works from your soil analysis. Ask on WhatsApp, or send 500 g to the laboratory.