Gamgu

Nutrient by nutrient

• Nitrogen

  Good
  Medium 100%

  Almost every soil test here had enough

  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	0%	100%	0%
  Roing	17%	82%	1%
  Lower Dibang Valley	18%	81%	1%
  Arunachal Pradesh	12%	74%	14%
  India	64%	30%	6%

• Phosphorus

  Poor
  Low 68% Medium 3% High 30%

  7 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	68%	3%	30%
  Roing	59%	12%	30%
  Lower Dibang Valley	65%	9%	27%
  Arunachal Pradesh	11%	67%	22%
  India	14%	41%	45%

• Potassium

  Poor
  Low 75% Medium 22% High 3%

  8 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	75%	22%	3%
  Roing	50%	42%	8%
  Lower Dibang Valley	46%	39%	15%
  Arunachal Pradesh	20%	65%	15%
  India	14%	53%	34%

• Organic carbon

  Good
  Medium 28% High 72%

  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	0%	28%	72%
  Roing	20%	49%	30%
  Lower Dibang Valley	27%	49%	24%
  Arunachal Pradesh	18%	47%	35%
  India	48%	28%	23%

• pH

  Okay
  Acidic 26% Neutral 74%

  3 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	26%	74%	0%
  Roing	58%	42%	0%
  Lower Dibang Valley	64%	36%	0%
  Arunachal Pradesh	51%	49%	0%
  India	12%	86%	2%

• Salt

  Okay
  Not salty 72% Salty 28%

  3 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	72%	28%
  Roing	91%	9%
  Lower Dibang Valley	93%	7%
  Arunachal Pradesh	97%	3%
  India	96%	4%

• Sulphur

  Poor
  Short 59% Enough 41%

  6 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	59%	41%
  Roing	41%	59%
  Lower Dibang Valley	40%	60%
  Arunachal Pradesh	23%	77%
  India	24%	76%

• Zinc

  Okay
  Short 31% Enough 69%

  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	31%	69%
  Roing	19%	81%
  Lower Dibang Valley	16%	84%
  Arunachal Pradesh	9%	91%
  India	35%	65%

• Iron

  Good
  Short 3% Enough 97%

  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	3%	97%
  Roing	18%	82%
  Lower Dibang Valley	18%	82%
  Arunachal Pradesh	12%	88%
  India	24%	76%

• Copper

  Good
  Short 3% Enough 97%

  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	3%	97%
  Roing	18%	82%
  Lower Dibang Valley	24%	76%
  Arunachal Pradesh	5%	95%
  India	5%	95%

• Manganese

  Okay
  Short 49% Enough 51%

  5 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	49%	51%
  Roing	71%	29%
  Lower Dibang Valley	76%	24%
  Arunachal Pradesh	17%	83%
  India	13%	87%

• Boron

  Good
  Short 10% Enough 90%

  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 more

  Healthy soil has 0.5 ppm or more.

  Compared with the wider area

  Place	Short	Enough
  Here	10%	90%
  Roing	21%	79%
  Lower Dibang Valley	21%	79%
  Arunachal Pradesh	23%	77%
  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 Lower Dibang Valley