Cooch Behar

• Nitrogen

  From 28,652 soil tests

  Poor
  Low 57% Medium 43%

  6 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/ha

  Healthy soil has 280 kg/ha or more.

  Compared with the wider area

  Place	Low	Medium	High
  Here	57%	43%	0%
  West Bengal	39%	58%	3%
  India	65%	29%	6%

• Phosphorus

  From 28,654 soil tests

  Good
  Low 6% Medium 15% High 79%

  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/ha

  Healthy soil has 10 kg/ha or more.

  Compared with the wider area

  Place	Low	Medium	High
  Here	6%	15%	79%
  West Bengal	7%	21%	72%
  India	13%	41%	45%

• Potassium

  From 28,657 soil tests

  Okay
  Low 46% Medium 35% High 19%

  5 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/ha

  Healthy soil has 110 kg/ha or more.

  Compared with the wider area

  Place	Low	Medium	High
  Here	46%	35%	19%
  West Bengal	11%	56%	33%
  India	14%	53%	33%

• Organic carbon

  From 28,639 soil tests

  Okay
  Low 26% Medium 30% High 44%

  3 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	26%	30%	44%
  West Bengal	25%	41%	33%
  India	49%	28%	23%

• pH

  From 28,597 soil tests

  Poor
  Acidic 60% Neutral 40%

  6 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 Alkaline

  In 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	60%	40%	0%
  West Bengal	27%	73%	0%
  India	11%	86%	2%

• Salt

  From 26,067 soil tests

  Good
  Not salty 96% Salty 4%

  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 Salty

  Under 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	96%	4%
  West Bengal	95%	5%
  India	96%	4%

• Sulphur

  From 28,658 soil tests

  Okay
  Short 46% Enough 54%

  5 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 more

  Healthy soil has 10 ppm or more.

  Compared with the wider area

  Place	Short	Enough
  Here	46%	54%
  West Bengal	33%	67%
  India	24%	76%

• Zinc

  From 28,656 soil tests

  Good
  Short 15% Enough 85%

  2 in 10 soil tests here came out short

  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 more

  Healthy soil has 0.6 ppm or more.

  Compared with the wider area

  Place	Short	Enough
  Here	15%	85%
  West Bengal	24%	76%
  India	35%	65%

• Iron

  From 28,657 soil tests

  Good
  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 more

  Healthy soil has 4.5 ppm or more.

  Compared with the wider area

  Place	Short	Enough
  Here	0%	100%
  West Bengal	1%	99%
  India	24%	76%

• Copper

  From 28,656 soil tests

  Good
  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 more

  Healthy soil has 0.2 ppm or more.

  Compared with the wider area

  Place	Short	Enough
  Here	0%	100%
  West Bengal	1%	99%
  India	5%	95%

• Manganese

  From 28,658 soil tests

  Good
  Short 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 more

  Healthy soil has 2 ppm or more.

  Compared with the wider area

  Place	Short	Enough
  Here	1%	99%
  West Bengal	11%	89%
  India	12%	88%

• Boron

  From 28,651 soil tests

  Poor
  Short 66% Enough 34%

  7 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 more

  Healthy soil has 0.5 ppm or more.

  Compared with the wider area

  Place	Short	Enough
  Here	66%	34%
  West Bengal	62%	38%
  India	44%	56%

Fixes are the usual advice. Your Soil Health Card or nearest Krishi Vigyan Kendra gives the exact dose for your field.