Maddur

Nutrient by nutrient

• Nitrogen

  Poor
  Low 81% Medium 19%

  8 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	81%	19%	0%
  Mandya	85%	15%	0%
  Karnataka	62%	32%	6%
  India	64%	30%	6%

• Phosphorus

  Good
  Low 6% Medium 14% High 80%

  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%	14%	80%
  Mandya	8%	21%	71%
  Karnataka	7%	36%	57%
  India	14%	41%	45%

• Potassium

  Good
  Low 18% Medium 30% High 51%

  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/ha

  Healthy soil has 110 kg/ha or more.

  Compared with the wider area

  Place	Low	Medium	High
  Here	18%	30%	51%
  Mandya	17%	46%	38%
  Karnataka	13%	47%	40%
  India	14%	53%	34%

• Organic carbon

  Okay
  Low 24% Medium 16% High 61%

  2 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	24%	16%	61%
  Mandya	34%	30%	36%
  Karnataka	46%	32%	22%
  India	48%	28%	23%

• pH

  Good
  Acidic 5% Neutral 92% Alkaline 3%

  Almost no soil tests here fell short

  What this means

  How sour (acidic) or alkaline the soil is. It decides which nutrients roots can take up.

  Acidic Neutral Alkaline

  Most crops do best at pH 6.5 to 7.5.

  Compared with the wider area

  Place	Acidic	Neutral	Alkaline
  Here	5%	92%	3%
  Mandya	9%	89%	1%
  Karnataka	7%	90%	3%
  India	12%	86%	2%

• Salt

  Good
  Not salty 88% Salty 12%

  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 Salty

  Under 1 dS/m is fine. Above 4 harms most crops.

  Compared with the wider area

  Place	Not salty	Salty
  Here	88%	12%
  Mandya	98%	2%
  Karnataka	91%	9%
  India	96%	4%

• Sulphur

  Good
  Short 8% Enough 92%

  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 more

  Healthy soil has 10 ppm or more.

  Compared with the wider area

  Place	Short	Enough
  Here	8%	92%
  Mandya	11%	89%
  Karnataka	31%	69%
  India	24%	76%

• Zinc

  Okay
  Short 33% Enough 67%

  3 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 more

  Healthy soil has 0.6 ppm or more.

  Compared with the wider area

  Place	Short	Enough
  Here	33%	67%
  Mandya	50%	50%
  Karnataka	57%	43%
  India	35%	65%

• Iron

  Okay
  Short 39% Enough 61%

  4 in 10 soil tests here came out short

  If your field is short: spray ferrous sulphate, 5 g per litre of water, when young leaves turn yellow.

  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	39%	61%
  Mandya	33%	67%
  Karnataka	52%	48%
  India	24%	76%

• Copper

  Good
  Short 5% Enough 95%

  1 in 10 soil tests here came out short

  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	5%	95%
  Mandya	8%	92%
  Karnataka	5%	95%
  India	5%	95%

• Manganese

  Good
  Short 7% Enough 93%

  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 more

  Healthy soil has 2 ppm or more.

  Compared with the wider area

  Place	Short	Enough
  Here	7%	93%
  Mandya	7%	93%
  Karnataka	14%	86%
  India	13%	87%

• Boron

  Okay
  Short 32% Enough 68%

  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 more

  Healthy soil has 0.5 ppm or more.

  Compared with the wider area

  Place	Short	Enough
  Here	32%	68%
  Mandya	52%	48%
  Karnataka	55%	45%
  India	45%	55%

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

Climate in Mandya

Villages in this block