UNIT 5. ACTIVITIES


1.-Define “manure”. 
2.-Define “fertilizer”. 
3.-Why are manure and fertilizers used? 
4.-What are the three elements soil must contain so that plants can have healthy growth? 
5.-What element is missing in a plant if its leaves turn yellowish? 
6.-What is the most important element for having strong roots? 
7.-If the leaves of a plant wilt, what element is missing? 
8.-If fruit doesn’t develop properly, what element is missing? 
9.-What element is related to the functioning of enzymes from sugars? 
10.-What element is missing if we see that the leaves of a plant are curling and becoming distorted? 


COMPLETE THE CHART WITH THE MISSING WORDS
Readily      Inorganic matter       specific        More        Artificial         Organic      slowly         Plant or animal               inorganic        less        organic matter         Natural         the primary           Chemical synthesized or manufactured

Difference between Manures and Fertilizers:
  
Sr No
Characteristics
Manures
Fertilizer
1
Origin
...................... origin
......................................................
2
Nature
........................ in nature
................................. in nature
3
Type
......................... product
................................. product
4
Conc. Of nutrients
.................. concentrated
....................... concentrated
5
Material
Supply ............................ matter
Supply .............................. matter
6
Nutrient availability
........................... available
May or may not be ...................... available      
7
Nutrients
Supply all ............................. nutrients including Micronutrient
Supply ............................ type of nutrients one, two or three. micro nutrients may or may not be present










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