What the soil tests found
6
out of 10
Soil score
OkayShort in most fields here: nitrogen, organic carbon and zinc.
For most crops. How the soil score works
- soil samples, 2024-25
- 9
- 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
PoorLow 100%
Almost every soil test 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 100% 0% 0% Sivaganga 98% 2% 0% Sivaganga 100% 0% 0% Tamil Nadu 99% 1% 0% India 64% 30% 6% -
Phosphorus
GoodMedium 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% Sivaganga 19% 51% 30% Sivaganga 33% 41% 26% Tamil Nadu 21% 43% 36% India 14% 41% 45% -
Potassium
GoodHigh 100%
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 0% 0% 100% Sivaganga 0% 39% 61% Sivaganga 3% 47% 50% Tamil Nadu 11% 43% 46% India 14% 53% 34% -
Organic carbon
PoorLow 100%
Almost every soil test 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 100% 0% 0% Sivaganga 99% 0% 0% Sivaganga 97% 3% 0% Tamil Nadu 88% 9% 3% India 48% 28% 23% -
pH
GoodNeutral 100%
Almost every soil test here came out neutral
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 0% 100% 0% Sivaganga 7% 90% 3% Sivaganga 6% 87% 7% Tamil Nadu 2% 93% 5% India 12% 86% 2% -
Salt
GoodNot salty 89% Salty 11%
1 in 10 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 89% 11% Sivaganga 99% 1% Sivaganga 98% 2% Tamil Nadu 98% 2% India 96% 4% -
Sulphur
GoodShort 11% Enough 89%
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 11% 89% Sivaganga 30% 70% Sivaganga 36% 64% Tamil Nadu 35% 65% India 24% 76% -
Zinc
PoorShort 100%
Almost every soil test 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 100% 0% Sivaganga 88% 12% Sivaganga 81% 19% Tamil Nadu 42% 58% 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% Sivaganga 1% 99% Sivaganga 10% 90% Tamil Nadu 39% 61% 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% Sivaganga 2% 98% Sivaganga 3% 97% Tamil Nadu 3% 97% India 5% 95% -
Manganese
GoodEnough 100%
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 0% 100% Sivaganga 0% 100% Sivaganga 1% 99% Tamil Nadu 28% 72% India 13% 87% -
Boron
GoodShort 11% Enough 89%
1 in 10 soil tests here came out short
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 11% 89% Sivaganga 23% 77% Sivaganga 32% 68% Tamil Nadu 45% 55% 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. 9 samples.
Climate in Sivaganga
Rain
About 980 mm of rain a year
In a normal year. A dry year brings about 720 mm.
Temperature
Hottest in May: days about 36°, nights 26°
Coolest in January: days about 30°, nights 21°.
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°).