What the soil tests found
8
out of 10
- soil samples, 2024-25
- 1,437
- nutrients checked in each sample
- 12
This shows what soil in this area tends to be like. Your own field can be different. Get it tested at a soil testing lab before deciding.
Nutrient by nutrient
-
Nitrogen
GoodLow 3% Medium 37% High 59%
Most soil tests here came out high
If your field is high: you can use about a quarter less urea than usual.
What this means
Grows leaves and stems. Short soil gives pale, yellow leaves.
Low under 280 kg/ha Medium 280–560 kg/ha High over 560 kg/haHealthy soil has 280 kg/ha or more.
Compared with the wider area Place Low Medium High Here 3% 37% 59% Biswanath 3% 45% 52% Assam 2% 60% 38% India 64% 30% 6% -
Phosphorus
GoodLow 18% Medium 31% High 51%
Most soil tests here came out high
If your field is high: you can use about a quarter less DAP than usual.
What this means
Builds roots and helps the crop flower and fill grain.
Low under 10 kg/ha Medium 10–25 kg/ha High over 25 kg/haHealthy soil has 10 kg/ha or more.
Compared with the wider area Place Low Medium High Here 18% 31% 51% Biswanath 17% 26% 57% Assam 10% 25% 65% India 14% 41% 45% -
Potassium
OkayLow 28% Medium 65% High 7%
3 in 10 soil tests here came out low
If your field is low: add about a quarter more potash (MOP) than the usual dose.
What this means
Fills grain and fruit, and helps crops stand drought and disease.
Low under 110 kg/ha Medium 110–280 kg/ha High over 280 kg/haHealthy soil has 110 kg/ha or more.
Compared with the wider area Place Low Medium High Here 28% 65% 7% Biswanath 49% 46% 6% Assam 37% 55% 8% India 14% 53% 34% -
Organic carbon
GoodLow 16% Medium 16% High 68%
Most soil tests here came out high
What this means
Shows how much organic matter the soil has. It keeps soil loose, holds water and feeds the crop slowly.
Low under 0.5% Medium 0.5–0.75% High over 0.75%Healthy soil has 0.5% or more.
Compared with the wider area Place Low Medium High Here 16% 16% 68% Biswanath 20% 19% 61% Assam 28% 23% 50% India 48% 28% 23% -
pH
PoorAcidic 68% Neutral 32%
7 in 10 soil tests here came out acidic
If your field is acidic: add agricultural lime before sowing. A soil lab works out how much your field needs.
What this means
How sour (acidic) or alkaline the soil is. It decides which nutrients roots can take up.
Acidic Neutral AlkalineMost crops do best at pH 6.5 to 7.5.
Compared with the wider area Place Acidic Neutral Alkaline Here 68% 32% 0% Biswanath 74% 26% 0% Assam 42% 58% 0% India 12% 86% 2% -
Salt
GoodNot salty 100%
Almost no soil tests here came out salty
What this means
Salt in the soil, shown as EC on the card. Salt makes it hard for roots to drink.
Not salty SaltyUnder 1 dS/m is fine. Above 4 harms most crops.
Compared with the wider area Place Not salty Salty Here 100% 0% Biswanath 100% 0% Assam 100% 0% India 96% 4% -
Sulphur
GoodShort 9% Enough 91%
1 in 10 soil tests here came out short
What this means
Makes oil in oilseeds and protein in pulses.
Short under 10 ppm Enough 10 ppm or moreHealthy soil has 10 ppm or more.
Compared with the wider area Place Short Enough Here 9% 91% Biswanath 10% 90% Assam 6% 94% India 24% 76% -
Zinc
OkayShort 24% Enough 76%
2 in 10 soil tests here came out short
If your field is short: mix 10 kg of zinc sulphate per acre into the soil before sowing. One dose lasts two or three seasons.
What this means
Needed for growth and healthy leaves. Rice and wheat often run short.
Short under 0.6 ppm Enough 0.6 ppm or moreHealthy soil has 0.6 ppm or more.
Compared with the wider area Place Short Enough Here 24% 76% Biswanath 30% 70% Assam 20% 80% India 35% 65% -
Iron
GoodShort 1% Enough 99%
Almost every soil test here had enough
What this means
Keeps young leaves green.
Short under 4.5 ppm Enough 4.5 ppm or moreHealthy soil has 4.5 ppm or more.
Compared with the wider area Place Short Enough Here 1% 99% Biswanath 0% 100% Assam 1% 99% India 24% 76% -
Copper
GoodShort 10% Enough 90%
1 in 10 soil tests here came out short
What this means
Helps the crop set seed and resist disease.
Short under 0.2 ppm Enough 0.2 ppm or moreHealthy soil has 0.2 ppm or more.
Compared with the wider area Place Short Enough Here 10% 90% Biswanath 9% 91% Assam 6% 94% India 5% 95% -
Manganese
GoodShort 9% Enough 91%
1 in 10 soil tests here came out short
What this means
Helps leaves make food from sunlight.
Short under 2 ppm Enough 2 ppm or moreHealthy soil has 2 ppm or more.
Compared with the wider area Place Short Enough Here 9% 91% Biswanath 19% 81% Assam 14% 86% India 13% 87% -
Boron
PoorShort 95% Enough 5%
9 in 10 soil tests here came out short
If your field is short: mix 4 kg of borax per acre into the soil before sowing.
What this means
Needed for flowers to set seed and fruit.
Short under 0.5 ppm Enough 0.5 ppm or moreHealthy soil has 0.5 ppm or more.
Compared with the wider area Place Short Enough Here 95% 5% Biswanath 82% 18% Assam 86% 14% India 45% 55%
Fixes are the usual advice. Your Soil Health Card or nearest Krishi Vigyan Kendra gives the exact dose for your field.
Source: Soil Health Card – soil nutrient analysis (Ministry of Agriculture & Farmers Welfare). 2024-25. 1,437 samples.
Climate in Biswanath
Rain
About 2,010 mm of rain a year
In a normal year. A dry year brings about 1,600 mm.
Temperature
Hottest in August: days about 33°, nights 25°
Coolest in January: days about 24°, nights 10°.
Averages for an area about 100 km across; hills and valleys can differ by several degrees.
Source: IMD gridded daily rainfall (0.25°); IMD gridded daily max/min temperature (1°).