Nutrient management class 9 chapter for preparing and presenting for art integration

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Nutrient
Nutrient
Management
Management
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IMPROVEMENT IN FOOD RESOURCES Chapter -12

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TOPICS
01 MANURE 02
03 04
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FERTILIZERS
ORGANIC FARMING CONCLUSION

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Just as we need food for development, growth and well-being,
plants also require nutrients for growth. Nutrients are supplied
to plants by air, water and soil. There are sixteen nutrients
which are essential for plants. Air supplies carbon and oxygen,
hydrogen comes from water, and soil supplies the other
thirteen nutrients to plants. Amongst these thirteen nutrients,
six are required in large quantities and are therefore called
macro- nutrients. The other seven nutrients are used by plants
in small quantities and are therefore called micro Nutrients
Intro
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NUTRIENT MANAGEMENT

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Nutrients supplied by air, water and soil
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Deficiency of these nutrients affects physiological processes in plants including
reproduction, growth and susceptibility to diseases. To increase the yield, the soil
can be enriched by supplying these nutrients in the form of manure and fertilizers

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Chapter 4
01
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MANURE

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MANURE
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Manure contains large quantities of organic matter and
also supplies small quantities of nutrients to the soil.
Manure is prepared by the decomposition of animal
excreta and plant waste. Manure helps in enriching soil
with nutrients and organic matter and increasing soil
fertility. The bulk of organic matter in manure helps in
improving the soil structure. This involves increasing the
water holding capacity in sandy soils. In clayey soils, the
large quantities of organic matter help in drainage and in
avoiding water logging.
In using manure we use biological waste material, which is
advantageous in protecting our environment from
excessive use of fertilizers. Using biological waste material
is also a way of recycling farm waste.

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MANURE
01 02
Compost And Vermi-
Compost And Vermi-
compost
compost
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Green Manure
Green Manure
Green manure: Prior to the
sowing of the crop seeds, some
plants like sun hemp or guar are
grown and then mulched by
ploughing them into the soil.
These green plants thus turn
into green manure which helps
in enriching the soil in nitrogen
and phosphorus.
The process in which farm waste material
like livestock excreta (cow dung etc.),
vegetable waste, animal refuse, domestic
waste, sewage waste, straw, eradicated
weeds etc. is decomposed in pits is known as
composting. The compost is rich in organic
matter and nutrients. Compost is also
prepared by using earthworms to hasten the
process of decomposition of plant and animal
refuse. This is called vermi-compost

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COMPOST AND VERMICOMPOST

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Green Manure

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Chapter 3
02
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FERTILIZERS

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FERTILIZERS
WHAT DO YOU MEAN BY FERTILIZERS?

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ADVANTAGES
1)excess fertilizer leads to
water pollution.
DISADVANTAGES
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2)high-cost farming.
3)can destroy soil fertility because
the organic matter in the soil is not
replenished and micro-organisms in
the soil are harmed by the fertilizers
used.
1)ensures good vegetative growth
(leaves,branches and flowers), giving
rise to healthy plants.
FERTILIZERS
2)Fertilizers are a factor in the higher
yields
3)Have plenty of nutrients

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FERTILIZERS
Fertilizers should be applied carefully in terms of proper dose,
time, and observing pre and post-application precautions for
their complete utilisation.
Sometimes fertilizers get washed away due to excessive
irrigation and are not fully absorbed by the plants. This excess
fertilizer then leads to water pollution.
Continuous use of fertilizers in an area can destroy soil fertility as
the organic matter in the soil is not replenished and micro-
organisms in the soil are harmed by the fertilizers used.

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Chapter 4
03
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ORGANIC FARMING

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ORGANIC FARMING
It is an agricultural process that uses biological fertilisers and pest
control acquired from animal or plant waste.

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Organic farming
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Organic Farming is the natural way of
farming in which no chemicals are used
either as fertilizers, or pesticides.
Organic Farming is done using only
natural manures like organic wastes,
farm wastes, animal wastes, compost,
etc. It basically aims at keeping the soil
alive with maintaining the health of
soil. Crop rotation, mixed cropping and
biological pest control are some of the
methods being followed in Organic
Farming.

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ORGANIC FARMING
Organic farming is a farming system with minimal or no use of
chemicals as fertilizers, herbicides, pesticides, etc., and with a
maximum input of organic manures, recycled farm-wastes
use of bio-agents such as culture of blue green algae in preparation
of biofertilizers, neem leaves or turmeric specifically in grain storage
as bio-pesticides, with healthy cropping systems is common.
These cropping systems are beneficial in insect, pest and wheat
control besides providing nutrients.

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ORGANIC FARMING
cheaper: With the usage of cheaper and local inputs, a
farmer can make a good return on investment.
Nutritional: As compared to chemical and fertiliser-
utilised products, organic products are more
nutritional, tasty, and good for health.
Environment-friendly: The farming of organic
products is free of chemicals and fertilisers, so it does
not harm the environment.

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Nutrient management refers to the efficient use of crops to
improve productivity. It is necessary to balance the soil nutrient
input with the crop requirement. If the nutrients are applied at the
right time and in adequate quantities, optimum crop yield is
obtained. If applied in huge amounts, it will harm the crop, and if
applied in small quantities it limits the yield. The nutrients that are
not utilized by the crops leach into groundwater or nearby surface
water.
CONCLUSION
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Thank You
Thank You
Thank You