East Siang

• Phosphorus

  From 4,123 soil tests

  Good
  Low 5% Medium 67% High 28%

  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/ha

  Healthy soil has 10 kg/ha or more.

  Compared with the wider area

  Place	Low	Medium	High
  Here	5%	67%	28%
  Arunachal Pradesh	14%	58%	28%
  India	13%	41%	45%

• Potassium

  From 4,123 soil tests

  Good
  Low 10% Medium 84% High 6%

  1 in 10 soil tests here came out low

  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	10%	84%	6%
  Arunachal Pradesh	25%	56%	19%
  India	14%	53%	33%

• Organic carbon

  From 4,123 soil tests

  Good
  Low 4% Medium 7% High 89%

  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	4%	7%	89%
  Arunachal Pradesh	18%	46%	36%
  India	49%	28%	23%

• pH

  From 4,079 soil tests

  Poor
  Acidic 78% Neutral 22%

  8 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	78%	22%	0%
  Arunachal Pradesh	51%	49%	0%
  India	11%	86%	2%

• Salt

  From 4,113 soil tests

  Good
  Not salty 100%

  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	100%	0%
  Arunachal Pradesh	97%	3%
  India	96%	4%

• Sulphur

  From 4,124 soil tests

  Good
  Short 2% Enough 98%

  Almost every soil test here had enough

  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	2%	98%
  Arunachal Pradesh	18%	82%
  India	24%	76%

• Zinc

  From 4,060 soil tests

  Okay
  Short 22% Enough 78%

  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 more

  Healthy soil has 0.6 ppm or more.

  Compared with the wider area

  Place	Short	Enough
  Here	22%	78%
  Arunachal Pradesh	9%	91%
  India	35%	65%

• Iron

  From 4,124 soil tests

  Good
  Short 18% Enough 82%

  2 in 10 soil tests here came out short

  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	18%	82%
  Arunachal Pradesh	7%	93%
  India	24%	76%

• Copper

  From 4,108 soil tests

  Good
  Short 9% Enough 91%

  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	9%	91%
  Arunachal Pradesh	5%	95%
  India	5%	95%

• Manganese

  From 4,119 soil tests

  Okay
  Short 32% Enough 68%

  3 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 more

  Healthy soil has 2 ppm or more.

  Compared with the wider area

  Place	Short	Enough
  Here	32%	68%
  Arunachal Pradesh	17%	83%
  India	12%	88%

• Boron

  From 3,429 soil tests

  Poor
  Short 62% Enough 38%

  6 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	62%	38%
  Arunachal Pradesh	24%	76%
  India	44%	56%

The tests here for nitrogen look like a testing error: almost every test reads the same, unlike the districts around. They aren't used.

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