What the soil tests found
7
out of 10
- soil samples, 2023-24 & 2024-25
- 1,337
- 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 17% Medium 83%
2 in 10 soil tests here came out low
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 17% 83% 0% Changlang 7% 92% 1% Arunachal Pradesh 12% 74% 14% India 64% 30% 6% -
Phosphorus
OkayLow 29% Medium 28% High 43%
3 in 10 soil tests here came out low
If your field is low: add about a quarter more DAP or single super phosphate than the usual dose, at sowing.
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 29% 28% 43% Changlang 8% 63% 29% Arunachal Pradesh 11% 67% 22% India 14% 41% 45% -
Potassium
OkayLow 40% Medium 60% High 1%
4 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 40% 60% 1% Changlang 17% 82% 1% Arunachal Pradesh 20% 65% 15% India 14% 53% 34% -
Organic carbon
OkayLow 36% Medium 30% High 34%
4 in 10 soil tests here came out low
If your field is low: add 4 tonnes of compost or farmyard manure per acre before sowing, and plough crop leftovers back in instead of burning them.
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 36% 30% 34% Changlang 16% 32% 52% Arunachal Pradesh 18% 47% 35% India 48% 28% 23% -
pH
PoorAcidic 82% Neutral 18%
8 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 82% 18% 0% Changlang 64% 36% 0% Arunachal Pradesh 51% 49% 0% India 12% 86% 2% -
Salt
GoodNot salty 99% Salty 1%
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 99% 1% Changlang 100% 0% Arunachal Pradesh 97% 3% India 96% 4% -
Sulphur
PoorShort 67% Enough 33%
7 in 10 soil tests here came out short
If your field is short: use single super phosphate instead of DAP, or add about 100 kg of gypsum per acre before sowing.
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 67% 33% Changlang 51% 49% Arunachal Pradesh 23% 77% India 24% 76% -
Zinc
GoodShort 1% Enough 99%
Almost every soil test here had enough
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 1% 99% Changlang 1% 99% Arunachal Pradesh 9% 91% India 35% 65% -
Iron
GoodEnough 100%
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 0% 100% Changlang 2% 98% Arunachal Pradesh 12% 88% India 24% 76% -
Copper
GoodEnough 100%
Almost every soil test here had enough
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 0% 100% Changlang 0% 100% Arunachal Pradesh 5% 95% India 5% 95% -
Manganese
GoodShort 1% Enough 99%
Almost every soil test here had enough
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 1% 99% Changlang 1% 99% Arunachal Pradesh 17% 83% India 13% 87% -
Boron
GoodShort 1% Enough 99%
Almost every soil test here had enough
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 1% 99% Changlang 3% 97% Arunachal Pradesh 23% 77% 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). 2023-24 & 2024-25. 1,337 samples.
Climate in Changlang
Rain
About 2,150 mm of rain a year
In a normal year. A dry year brings about 1,440 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°).