DUVVURU RAMANAMMA
WOMEN’S COLLEGE (Autonomous) GUDUR
DEPARTMENT OF BOTANY
GROUP DISCUSSION 2018 – 2019
IIBBC&III B.B.C
Students participated in the group discussion on
28.01.2019
at 11 am to 12 pm
Topic: - Chemical Fertilizers and Their Effects
Students
divided into 2 Groups, Interested students participated in group discussion
A GROUP
|
B GROUP
|
B.Revathi
|
K.Vanitha
|
A.Pragathi
|
M.Priscilla
|
K.Greeshma
|
Ch.Supriya
|
B.Bhavani
|
G.Sivakumari
|
G.Harshitha
|
D.Renuka
|
B.Revathi
|
N.Pragna
|
A.Pragathi
|
M.Priscilla
|
K.Shanthipriya
|
T.Bhanumathi
|
K.Swarupa
|
E.Mamatha
|
P.Sindhuja
|
T.Uma
|
G.Shalini
|
D.Nagadeepthi
|
K.Pragathi
|
M.Silpa
|
A.Purandeswari
|
P.Koteswari
|
R.Indhu
|
U.Dakhayani
|
Y.Mamatha
|
M.Vengamamba
|
II GROUP
A
chemical fertilizer is defined as any inorganic
material of
wholly or partially synthetic origin and it has a definite
chemical composition.
Chemical
fertilizers are almost harmful to soil but in order to meet the demands of
plant nutrients they are often used.
There
are 3 types of chemical fertilizers namely nitrogenous, phosphoric and potassic
fertilizers which are abundantly used.
There
is no scientific evidence of declining in productivity on applying chemical
fertilizers but imbalanced and overdose use of fertilizers leads to nutrient
deficiencies.
The advantages of
chemical fertilizers are:
·
Since nutrients are available to the plants immediately,
improvement occurs in days.
·
They are highly analyzed to produce the exact ratio of nutrients
desired.
·
Standardized labeling makes ratios and chemical sources easy to
understand.
·
They’re inexpensive.
The disadvantages are:
1. They
are non-renewable.
2. Danger
of over fertilization. Thus may kill plants and upset the environment.
3. It
degrades the environment, poses threat to micro-organisms and contributes to
green house gases.
4. It
poses long-term damages to the soil.
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