Kshav Singh roll no.36 Improvement in food resources

CHAPTER-15

Improvements in Foods Resources

Questions:-

08-JULY-2016


 SOURCE
NUTRIENTS 
 Air
 carbon, oxygen
 Water
 hydrogen, oxygen
 Soil
 (i) Macronutrients:
nitrogen, phosphorus,
potassium, calcium,
magnesium, sulphur
(ii) Micronutrients:
iron, manganese, boron,
zinc, copper,
molybdenum, chlorine

  • 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 macronutrients. The other seven nutrients are used by plants in small quantities and are therefore called micronutrients.

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