the impact of climate change on the agriculture sector.

2. Agrometerology
Anshul Phaugat

3. CLIMATE CHANGE
• Climate Change is the defining
issue of our time and we are at a
defining moment. From shifting
weather patterns that threaten
food production, to rising sea
levels that increase the risk of
catastrophic flooding, the impacts
of climate change are global in
scope and unprecedented in
scale. Without drastic action
today, adapting to these impacts
in the future will be more difficult
and costly.

4.  Agriculture and fisheries are highly dependent on the climate. nutrient levels, soil
moisture, water availability, and other conditions must also be met.
 Changes in the frequency and severity of droughts and floods could pose
challenges for farmers and ranchers and threaten food safety.
 Meanwhile, warmer water temperatures are likely to cause the habitat ranges of
many fish and shellfish species to shift, which could disrupt ecosystems.
 Overall, climate change could make it more difficult to grow crops, raise animals,
and catch fish in the same ways and same places as we have done in the past.
The effects of climate change also need to be considered along with other evolving
factors that affect agricultural production, such as changes in farming practices and
technology.

5. Impacts on crops
Rising levels of atmospheric carbon dioxide reduce the concentrations of
protein and essential minerals in most plant species, including wheat, soybeans,
and rice.
This direct effect of rising CO2 on the nutritional value of crops represents a
potential threat to human health.
Human health is also threatened by increased pesticide use due to increased
pest pressures and reductions in the efficacy of pesticides.
The ranges and distribution of weeds and pests are likely to increase with
climate change. This could cause new problems for farmers' crops previously
unexposed to these species.
More extreme temperature and precipitation can prevent crops from growing.
Extreme events, especially floods and droughts, can harm crops and reduce
yields.

6. GLOBAL WARMING
• Here's a simple definition of
global warming. (And yes, it's
really happening.) Over the past
50 years, the average global
temperature has increased at the
fastest rate in recorded history.
And experts see the trend is
accelerating: All but one of the 16
hottest years in NASA’s 134-year
record have occurred since 2000.

7. Causes of global warming
1. Burning fossil fuels
2. Deforestation & Tree-Clearing
3. Agriculture & Farming
• Animals, particularly livestock like sheep and cattle, produce methane, a greenhouse gas.
When livestock are grazed at a large scale, as in Australia, the amount of methane produced
is a big contributor to global warming.
Some fertilisers that farmers use also release nitrous oxide, which is another greenhouse gas.

8. Effects of global warming
Global warming could lead to an increase in pest insect populations, harming yields of staple
crops like wheat, soybeans, and corn. While warmer temperatures create longer growing
seasons, and faster growth rates for plants, it also increases the metabolic rate and number
of breeding cycles of insect populations.
Greater loss expected in Rabi. Every 1oC increase in temperature reduces wheat production
by 4-5 million tons. Loss only 1-2 million tons if farmers could plant in time
Reduced frequency of frost damage: less damage to potato, peas, mustard
Increased droughts and floods are likely to increase production variability
Cereal productivity to decrease by 10-40% by 2100.