The document discusses ways to conserve soil fertility. It defines soil fertility as the ability of soil to sustain plant growth and optimize crop yield. Key ways to conserve soil fertility discussed include using cover crops and legumes to fix nitrogen; applying fertilizers strategically to replenish losses while minimizing leaching; and employing an integrated soil fertility management approach involving organic inputs, crop rotation, and adapted practices. The overall goal is to maximize crop production while preventing depletion of soil nutrients and degradation of physical and chemical properties.

1. How to conserve soil
fertility?
Presented by:
Tanveer Abbas
AGLA-16-11
Presented to:
Dr Allah Wasaya
College of Agriculture
BZU, Bahadur sub campus Layyah

2. Slide titles
• Fertile soil
• What is soil fertility?
• Components of soil fertility
• Factors effecting soil fertility
• Measurements to conserve soil fertility
• References
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3. Soil fertility
• Soil fertility is the ability of soil to sustain plant
growth and optimize crop yield.
• This can be enhanced through organic and inorganic
fertilizers to the soil.
• Nuclear techniques provide data that enhances soil
fertility and crop production while minimizing the
environmental impact.
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4. Fertile soil
A fertile soil is one that contains an
adequate supply of all the nutrients
required for the successful completion of
plant life cycle.
A fertile soil is essential for optimum
productivity, profitability, protection of
ground water quality and soil from
erosion.
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5. Factors effecting soil fertility
Conserve Soil fertility is the prevention of soil loss
from
 Erosion
 Over usage
 Acidification
 Salinization
 Other chemical soil contamination
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6. Different approaches to conserve soil fertility
• An integrated soil fertility management aims at
maximizing the efficiency of the agronomic use of
nutrients and improving crop productivity
• This can be achieved through the use of grain
legumes, which enhance soil fertility through
biological nitrogen fixation, and the application of
chemical fertilizers.
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7. Conti..
• Whether grown as pulses for grain, as green
manure, as pastures or as the tree components of
agro-forestry systems.
• A key value of leguminous crops lies in their ability
to fix atmospheric nitrogen, which helps reduce the
use of commercial nitrogen fertilizer and enhances
soil fertility.
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9. Physical soil fertility
• The capacity of soil to
provide physical conditions
that support plant
productivity, reproduction
and quality without leading
to loss of soil structure or
erosion and supporting soil
biological and chemical
processes.
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10. Chemical soil fertility
• The capacity of soil to provide a suitable
chemical and nutritional environment for the
plants and foraging animals for productivity,
reproduction and quality in a way that supports
beneficial soil physical and biological
processes, including those involved in nutrient
cycling.
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11. Biological soil fertility
The capacity of organisms living in soil to
contribute to the nutritional requirements of plants
and foraging animals for productivity, reproduction
and quality while maintaining biological processes
that contribute positively to the physical and
chemical state of the soil.
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12. Measures to conserve soil fertility
• Forest Protection
• No-Till Farming
• Fewer Concrete Surfaces
• Plant Windbreak Areas
• Terrace Planting
• Plant Trees
• Crop Rotation
• Water the Soil
• Maintain pH
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13. Conti
• Add Earthworms
• Indigenous Crops
• Mulch
• Afforestation
• Monitor Grazing
• Fertilizers
• No Compacting
• Accent Vegetation
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15. Cover crops
• Soil fertility can be further improved by
incorporating cover crops that add organic matter to
the soil, which leads to improved soil structure and
promotes a healthy, fertile soil.
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17. Legumes crops
• By using green manure or growing legumes to fix
nitrogen from the air through the process of
biological nitrogen fixation.
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19. Fertilizers
• By micro-dose fertilizer applications, to replenish
losses through plant uptake and other processes;
• By minimizing losses through leaching below the
crop rooting zone by improved water and nutrient
application.
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21. Conclusion
• Advancing food security and environmental
sustainability in farming systems requires an integrated
soil fertility management approach that maximizes crop
production while minimizing the mining of soil nutrient
reserves and the degradation of the physical and
chemical properties of soil that can lead to land
degradation, including soil erosion.
• Such soil fertility management practices include the use
of fertilizers, organic inputs, crop rotation with legumes
and the use of improved germplasm, combined with the
knowledge on how to adapt these practices to local
conditions.
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22. References
• https://www.conserve-energy-
future.com/remarkable-ways-to-conserve-and-
protect-soil fertility.php
• https://en.wikipedia.org/wiki/Soil_conservation
• https://www.sare.org/Learning-Center/Books/Crop-
Rotation-on-Organic-Farms/Text-Version/Physical-
and-Biological-Processes-In-Crop-Production/Crop-
Rotation-Effects-on-Soil-Fertility-and-Plant-Nutrition
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