What the soil tests found
9
out of 10
Soil score
GoodToo acidic in most fields here.
Not in the score: sulphur and zinc.
For most crops. How the soil score works
- soil samples, 2024-25
- 114
- nutrients checked
- 11
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
-
Good
Nitrogen
From 114 soil tests
Low 1% Medium 86% High 13%
Almost every soil test here had enough
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 1% 86% 13% Pongchau 1% 85% 14% Longding 1% 84% 16% Arunachal Pradesh 16% 70% 15% India 65% 29% 6% -
Good
Phosphorus
From 114 soil tests
Medium 100%
Almost every soil test here had enough
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 0% 100% 0% Pongchau 0% 99% 0% Longding 0% 99% 1% Arunachal Pradesh 14% 58% 28% India 13% 41% 45% -
Good
Potassium
From 114 soil tests
Low 2% Medium 37% High 61%
Most soil tests here came out high
If your field is high: you can use about a quarter less potash than usual.
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 2% 37% 61% Pongchau 1% 39% 59% Longding 1% 39% 60% Arunachal Pradesh 25% 56% 19% India 14% 53% 33% -
Okay
Organic carbon
From 114 soil tests
Low 35% Medium 40% High 25%
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 35% 40% 25% Pongchau 31% 42% 27% Longding 20% 48% 32% Arunachal Pradesh 18% 46% 36% India 49% 28% 23% -
Poor
pH
From 114 soil tests
Acidic 96% Neutral 4%
Almost every soil test 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 AlkalineIn these tests, neutral means about pH 6 to 8, which suits most crops; acidic is below about 6 and alkaline above about 8.
Compared with the wider area Place Acidic Neutral Alkaline Here 96% 4% 0% Pongchau 97% 3% 0% Longding 94% 6% 0% Arunachal Pradesh 51% 49% 0% India 11% 86% 2% -
Good
Salt
From 114 soil tests
Not salty 98% Salty 2%
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. Between 1 and 4, only crops that can't take salt lose yield. Above 4 harms most crops.
Compared with the wider area Place Not salty Salty Here 98% 2% Pongchau 98% 2% Longding 98% 2% Arunachal Pradesh 97% 3% India 96% 4% -
Good
Iron
From 114 soil tests
Enough 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% Pongchau 0% 100% Longding 0% 100% Arunachal Pradesh 7% 93% India 24% 76% -
Good
Copper
From 114 soil tests
Enough 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% Pongchau 0% 100% Longding 0% 100% Arunachal Pradesh 5% 95% India 5% 95% -
Good
Manganese
From 114 soil tests
Short 8% Enough 92%
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 8% 92% Pongchau 9% 91% Longding 7% 93% Arunachal Pradesh 17% 83% India 12% 88% -
Good
Boron
From 111 soil tests
Enough 100%
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 0% 100% Pongchau 0% 100% Longding 0% 100% Arunachal Pradesh 24% 76% India 44% 56%
The tests here for sulphur look like a testing error: almost every test reads the same, unlike the districts around. They aren't used.
Too few tests here to judge zinc (3 tests), out of 114 soil samples.
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. 114 samples.
Climate in Longding
Rain
About 2,130 mm of rain a year
In a normal year. A dry year brings about 1,910 mm.
Temperature
Hottest in August: days about 29 °C, nights 22 °C
Coolest in January: days about 21 °C, nights 8 °C.
Typical of the district's villages; a farm much higher or lower can be a few degrees cooler or warmer.
Source: IMD gridded daily rainfall (0.25°); IMD gridded daily max/min temperature (1°); TerraClimate 1991–2020 temperature normals (about 4 km), where each district's villages are.