Green Manure as a component of Nutrient Management (INM)

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Green Manure as a component of Nutrient
Management (INM) 
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Green manure as a component of INM
Introduction

• Green manuring crop such as Dhaincha (Sesbania
  spp.) sunhemp (Crotalaria juncea), etc. can be
  grown before the rice season.
• These crops provide sufficient quantity of
  nitrogen. Green manure helps in increasing
  apparent use efficiency of K when combined with
  50 of the recommended doze of NPK.
• It also has residual effect on the next crop and
  minimize the adverse effects of AI3 and /or Fe
  2 in acidic lateritic soils through the
  chelation of these ions by organic molecules
  liberated from FYM in the course of
  mineralization.
• They provide sufficient quantity of organic
  matter which in turn helps in development of good
  soil structure.

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Green manure as a component of INM

• Green manure improves nutrient use efficiency in
  various ways
• Green manuring through Sesbania aculeata is
  equivalent to 60 kg inorganic N/ha.
• Incorporation of mungbean after picking pods
  results in savings
• of 60 kg inorganic N/ha for the rice crop
• Alley cropping to Leucaena leucocephala,
  Gliricidia sepium and Acacia mangium can provide
  100-300 kg N/ha per year
• Pruning of Sesbania rostrata planted as hedgerows
  provides 3-4 t/ha dry matter after decomposition,
  it releases an average of 70 kg N/ha

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Green manure as a component of INM

• Besides above, green manure helps in
• Increasing apparent use efficiency of K when
  combined with 50 of the recommended NPK.
• Having residual effect on the next crop.
• Minimizing the adverse effects of AI3 and /or Fe
  2 in acidic lateritic soils through the
  chelation of these ions by organic molecules
  liberated from FYM in the course of
  mineralization.

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Green manure as a component of INM

• Use of green manure in crop rotation before
  transplanting rice.
• Supplements about 50 of the total N requirement
  of rice
• Provides about 75-100 of the crops requirement
  in the case of rain fed lowlands when the
  requirement for N is relatively low (60-80 kg
  N/ha).
• Has a mobilizing effect on PK and micronutrients
  in the soil.
• Reduces the leaching and gaseous losses of N,
  thus increasing the efficiency of applied plant
  nutrients.
• Can skip the P allocation to rice when 30 kg
  P2O5/ha is applied to the green manure crop.

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Green manure as a component of INM
Provides 20-25 kg N/ha Improves the soil
organic matter. Improves physico-chemical and
biological condition of the soil
It is quite interesting that incorporation of
crop residues before rice
Inclusion of grain/fodder/legume crops in crop
rotation helps in
Contributing as much as 50-60 kg N/ha to the
succeeding crop of rice Contributing about 60
kg N/ha when whole plant of mungbean is
incorporated into the soil after picking the pods
in the summer season
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Green manure as a component of INM
Grow green manuring crops such as Dhaincha
(Sesbania spp.) sunhemp (Crotalaria juncea),
etc.,before the rice season.


Green Manure crop Acacia mangium and Sesbania
rostrata as hedgerows in alley. Before
transplanting the rice crop, incorporate whole
plants of leguminous crop grown in summer (such
as greengram, blackgram and cowpea) after picking
the pods.
Green Manure crop
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Green manure as a component of INM
How INM brings happiness? INM brings happiness
to the farmers by producing high yield and
keeping soil in good health condition.
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