What the soil tests found
8
out of 10
Soil score
GoodFor most crops. How the soil score works
- soil samples, 2023-24 & 2024-25
- 662
- 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
OkayLow 39% Medium 61%
4 in 10 soil tests here came out low
If your field is low: add about a quarter more urea than the usual dose, in two or three splits. A pulse crop in rotation also adds nitrogen.
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 39% 61% 0% Upper Siang 39% 61% 0% Arunachal Pradesh 12% 74% 14% India 64% 30% 6% -
Phosphorus
OkayLow 24% Medium 76%
2 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 24% 76% 0% Upper Siang 20% 80% 0% Arunachal Pradesh 11% 67% 22% India 14% 41% 45% -
Potassium
OkayLow 27% Medium 69% High 4%
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 27% 69% 4% Upper Siang 26% 72% 2% Arunachal Pradesh 20% 65% 15% India 14% 53% 34% -
Organic carbon
GoodLow 17% Medium 27% High 57%
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 17% 27% 57% Upper Siang 19% 26% 55% Arunachal Pradesh 18% 47% 35% India 48% 28% 23% -
pH
OkayAcidic 21% Neutral 79%
2 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 21% 79% 0% Upper Siang 20% 80% 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% Upper Siang 99% 1% Arunachal Pradesh 97% 3% India 96% 4% -
Sulphur
OkayShort 35% Enough 65%
4 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 35% 65% Upper Siang 34% 66% Arunachal Pradesh 23% 77% India 24% 76% -
Zinc
OkayShort 23% Enough 77%
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 23% 77% Upper Siang 23% 77% 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% Upper Siang 0% 100% Arunachal Pradesh 12% 88% India 24% 76% -
Copper
GoodShort 1% Enough 99%
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 1% 99% Upper Siang 0% 100% Arunachal Pradesh 5% 95% India 5% 95% -
Manganese
OkayShort 22% Enough 78%
2 in 10 soil tests here came out short
If your field is short: spray manganese sulphate, 5 g per litre of water, on the young crop.
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 22% 78% Upper Siang 22% 78% Arunachal Pradesh 17% 83% India 13% 87% -
Boron
OkayShort 26% Enough 74%
3 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 26% 74% Upper Siang 22% 78% 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. 662 samples.
Climate in Upper Siang
Rain
About 2,910 mm of rain a year
In a normal year. A dry year brings about 2,370 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°).