Prothrapur

Nutrient by nutrient

• Nitrogen

  Poor
  Low 91% Medium 9%

  9 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	91%	9%	0%
  South Andamans	84%	16%	0%
  Andaman And Nicobar Islands	83%	17%	0%
  India	64%	30%	6%

• Phosphorus

  Poor
  Low 88% Medium 12%

  9 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/ha

  Healthy soil has 10 kg/ha or more.

  Compared with the wider area

  Place	Low	Medium	High
  Here	88%	12%	0%
  South Andamans	89%	11%	0%
  Andaman And Nicobar Islands	90%	10%	0%
  India	14%	41%	45%

• Potassium

  Poor
  Low 86% Medium 14%

  9 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	86%	14%	0%
  South Andamans	89%	11%	0%
  Andaman And Nicobar Islands	85%	15%	0%
  India	14%	53%	34%

• Organic carbon

  Poor
  Low 98% Medium 2%

  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	98%	2%	0%
  South Andamans	94%	6%	0%
  Andaman And Nicobar Islands	91%	8%	0%
  India	48%	28%	23%

• pH

  Good
  Acidic 3% Neutral 97%

  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 Alkaline

  Most crops do best at pH 6.5 to 7.5.

  Compared with the wider area

  Place	Acidic	Neutral	Alkaline
  Here	3%	97%	0%
  South Andamans	7%	93%	0%
  Andaman And Nicobar Islands	14%	86%	0%
  India	12%	86%	2%

• Salt

  Okay
  Not salty 79% Salty 21%

  2 in 10 soil tests here came out salty

  If your field is salty: grow crops that take salt, level the field, and wash the salt down with good water before sowing.

  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	79%	21%
  South Andamans	87%	13%
  Andaman And Nicobar Islands	89%	11%
  India	96%	4%

• Sulphur

  Poor
  Short 96% Enough 4%

  Almost every soil test 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	96%	4%
  South Andamans	92%	8%
  Andaman And Nicobar Islands	94%	6%
  India	24%	76%

• Zinc

  Good
  Short 6% Enough 94%

  1 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	6%	94%
  South Andamans	10%	90%
  Andaman And Nicobar Islands	8%	92%
  India	35%	65%

• Iron

  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%
  South Andamans	0%	100%
  Andaman And Nicobar Islands	0%	100%
  India	24%	76%

• Copper

  Good
  Short 8% Enough 92%

  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	8%	92%
  South Andamans	6%	94%
  Andaman And Nicobar Islands	3%	97%
  India	5%	95%

• Manganese

  Good
  Enough 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 more

  Healthy soil has 2 ppm or more.

  Compared with the wider area

  Place	Short	Enough
  Here	0%	100%
  South Andamans	2%	98%
  Andaman And Nicobar Islands	1%	99%
  India	13%	87%

• Boron

  Good
  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 more

  Healthy soil has 0.5 ppm or more.

  Compared with the wider area

  Place	Short	Enough
  Here	0%	100%
  South Andamans	0%	100%
  Andaman And Nicobar Islands	2%	98%
  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 South Andamans

Villages in this block