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green manuring ppt.pptx

Green manuring is an agricultural practice that involves growing and incorporating green, actively growing plants into the soil to improve its fertility and structure. This sustainable and eco-friendly technique harnesses the natural processes of nitrogen fixation, nutrient cycling, and organic matter addition to enhance soil health. Here's a description highlighting the key aspects of green manuring: "Green manuring is a forward-thinking agricultural strategy that embraces the power of nature to cultivate healthier and more productive soils. In this practice, cover crops, often chosen for their ability to fix nitrogen and accumulate essential nutrients, are intentionally grown and then plowed back into the soil while still green and succulent. This process not only adds valuable organic matter but also enhances microbial activity, fostering a dynamic soil ecosystem. By incorporating green manure crops into the rotation, farmers can effectively suppress weeds, improve water retention, and break disease cycles. Furthermore, the nitrogen-fixing capability of certain cover crops contributes to enhanced soil fertility, reducing the dependence on synthetic fertilizers. This approach aligns with sustainable agriculture principles, promoting long-term soil resilience and minimizing environmental impact. Green manuring stands as a testament to the synergy between agricultural practices and ecological balance, offering a natural and holistic solution for maintaining and improving soil health. As a cost-effective and environmentally friendly method, it underscores the importance of a harmonious relationship between farming and nature in fostering sustainable and resilient agricultural systems."

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green manuring ppt.pptx
MVPS KDSP COLLEGE OF
AGRICULTURE , NASHIK
PRESENTED BY – Temgire Shubham Annasaheb
ROLL NO – AN 110/2017
MODULE INCHARGE – Prof. N.B. Shinde
PRESENTED TO – Dr. T.D. Patil
CENTRE – K.D.S.P. COA, Nashik
Introdution
Green manuring is a part of
organic farming which can be
defined as “the practice of
enriching the soil fertility by
ploughing under or soil
incorporation of any green
manure crops while they are
green or soon after they start
flowering.
Green manuring is considered
to be a good management
practice in all agricultural
production systems because of
its increasing sustainability of
cropping system through
reducing soil erosion.
The crops that are grown for
green manure are called green
manure crops.
WHAT IS GREEN MANURE?
Green manure refers to “a plant
material incorporated with the soil
while green or soon after maturity for
improving the soil to supply
nutrients, particularly N, to a
standing crop”.
WHAT IS GREEN MANURING?
Green manuring is a practice of
ploughing or burying the undeco-
mposed green plant tissues into the
soil for improving structure and
fertility of the soil.
 Green manuring contributes 40 to 80 kg nitrogen
per ha.
 Besides supplying nitrogen, it prevents loss of
nitrogen by leaching and erosion.
 Vigorous root system of green manure keeps the
soil particles bound together.
 Green manure reclaims saline and alkaline soils.
 Some green leaf manure crops serve as fodder.
 The growth of green manure crops is very fast.

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green manuring ppt.pptx

  • 2. MVPS KDSP COLLEGE OF AGRICULTURE , NASHIK PRESENTED BY – Temgire Shubham Annasaheb ROLL NO – AN 110/2017 MODULE INCHARGE – Prof. N.B. Shinde PRESENTED TO – Dr. T.D. Patil CENTRE – K.D.S.P. COA, Nashik
  • 3. Introdution Green manuring is a part of organic farming which can be defined as “the practice of enriching the soil fertility by ploughing under or soil incorporation of any green manure crops while they are green or soon after they start flowering.
  • 4. Green manuring is considered to be a good management practice in all agricultural production systems because of its increasing sustainability of cropping system through reducing soil erosion. The crops that are grown for green manure are called green manure crops.
  • 5. WHAT IS GREEN MANURE? Green manure refers to “a plant material incorporated with the soil while green or soon after maturity for improving the soil to supply nutrients, particularly N, to a standing crop”. WHAT IS GREEN MANURING? Green manuring is a practice of ploughing or burying the undeco- mposed green plant tissues into the soil for improving structure and fertility of the soil.
  • 6.  Green manuring contributes 40 to 80 kg nitrogen per ha.  Besides supplying nitrogen, it prevents loss of nitrogen by leaching and erosion.  Vigorous root system of green manure keeps the soil particles bound together.  Green manure reclaims saline and alkaline soils.  Some green leaf manure crops serve as fodder.  The growth of green manure crops is very fast.
  • 7.  Green leaf manuring – It refers to turning into the soil green leaves and tender green twigs collected from shrubs and trees grown on field bunds, waste lands and nearby forest area. Plant N P K Gliricidia 2.76 0.28 4.60 Pongamin 3.31 0.44 2.39 Neem 2.83 0.28 0.35 Gulmohar 2.76 0.46 0.50 Peltophorum 2.63 0.37 0.50
  • 8. Gliricidia – Gliricidia sepium Pongamin – Millettia Neem – Azadirachta indica
  • 9. Gulmohar - Delonix regia Peltophorum – Peltophorum pterocarpum
  • 10.  In-situ green manuring – When green manure crops are grown in the field itself either as a pure crop or as intercrop with the main crop and buried in the same field it is known as In- situ green manuring. Plant N P K Sunhemp 2.30 0.50 1.80 Dhaincha 3.50 0.60 1.20 Sesbania 2.71 0.53 2.21 Cowpea 1.70 0.28 1.25 Mungbean 2.21 0.26 1.26
  • 11. Sunhemp – Crotalaria juncea Dhaincha – Sesbania bispinosa Mungbean – Vigna radiata
  • 12. Sesbania – Sesbania rostrata Cowpea – Vigna unguiculata
  • 13.  Multipurpose.  Short duration as well as fast growing .  High nutrient accumulation ability.  Tolerance for adverse climatic condition.  High water use efficiency .  High seed production.  Long seed viability .  Ease in incorporation  Pest and disease resistant.  Deep root system.  High biomass production .  Wider ecological adoptability.
  • 14.  Green manures add organic matter to the soil and simulates activity of soil microorganisms.  Green manures improve the structure of the soil thereby improving WHC, decreasing run off and erosion.  Green manures take nutrients from lower layers of the soil and adds to the upper layer of soil.
  • 15.  Green manures increase the availability of certain plant nutrients like NPK.  Green manures improves soil structure and soil tilth.it also improves areation in rice soils by stimulating the activities of surface film of algae and bacteria.  Green manuring increases the yield of crops to an extent of 15-20% as compared to non green manuring fields.
  • 16.  Under rain fed conditions, the germination and growth of succeeding crop may be affected due to depletion of moisture for the growth and decomposition of green manuring.  Green manuring crops inclusive of decomposition period occupies the field least 75-80 days which means a loss of one crop.
  • 17.  Incidence of pests and diseases may increases if the green manuring is not kept free from them.  A green manure crop may compete for time, labour and water, the cost of which must be balanced against the cost of inorganic fertilizers.  Non availability of good quality seeds restrict raising of green manure crops.
  • 18.  Green manure crop should be incorporated into soil at proper age of crop to get maximum benefit. It should be turned into soil at flowering stage, which is about 7-8 weeks after sowing.  Dhaincha attain maximum growth about 8 weeks after sowing, while sun hemp crop flower aroung 8- 10 weeks after sowing. An 8 week old green manure crop is succulent enough to be turned into soil for best response under rice.
  • 19.  Various reports conclude that a green manure crop should be turned under at 7 to 8 week age, which coincides with flowering and maximum growth stage for most of the green manure crops.
  • 20.  Which green manure crop should be grown (best suited to the soil and climatic condition)  When should be grown (time of sowing)  At what stage it should be buried (time/stage to turned into soil)  What should be the time lag between the burying of the green manure crop and the sowing of the next crop (to allow decomposition)
  • 22. Cost of 1 soil sample- No. Nutrient/componen t Expenditure 1 pH 7.5 2 EC 1.25 3 Organic Carbon% 50 4 CaCO3 68 5 Nitrogen 40.2 6 Phosphorus 12 7 Potassium 3 8 Other charges 5 9 Labour charges 50 Total 236.95
  • 23. Cost charges from farmers- 300 Rs./sample. Total expenditure- 236.95 Rs./sample. Net profit- Gross income-Total expenditure = 300-236.95 = Rs.63.05 BC ratio = present value of gross income ÷ Total expenditure = 300 ÷ 236.95 = 1.26
  • 24. Collection of Soil sample Group Photo Field Test
  • 25. Sieving Soil Sample Weighing Soil Sample