Sources of food

satnam singh
Mind Map by satnam singh, updated more than 1 year ago
satnam singh
Created by satnam singh almost 4 years ago
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Sources of food
1 CROPS
1.1 Needs Sunlight,Water,Air
1.1.1 HELP IN GROWTH,REGULATED BY PLANT HORMONES ALSO USED IN WEED KILLERS AND RIPENING OF FRUITS
1.2 CHEMICAL CONTROL
1.2.1 HERBICIDES AND PESTICIDES
1.2.1.1 DISADVANTAGES:CAUSE POLLUTION SUCH AS AIR POLLUTION AND WATER POLLUTION
1.2.1.2 ADVANTAGES:GIVE NUTRIENTS TO THE SOILS
1.2.1.3 HERBICIDES KILLS WEEDS AND PESTICIDES KILL UNWANTED PESTS
1.3 BIOLOGICAL CONTROL
1.3.1 INTRUDUCE NATURAL ENEMIES
1.4 SOIL
1.4.1 REQUIRES FERTILISERS AND APPROPIATE PH
2 SPACE LIMITATION
2.1 INCREASE IN WORLD POPULATION
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