Leaf Color chart (LCC)

INSTITUTE OF AGRICULTURAL SCIENCES
RAWE PRESENTATION
EXT-411
NITROGEN MANAGEMENT IN RICE BY USING LEAF COLOUR CHART (LCC)
Submitted to:-
Prof. O. P. Mishra
Dr. B. Jirli
Submitted by:-
Arvind Kumar(14026)
B.Sc.(Ag) 4th Yr.

Problem:-
Difficult in determination of nitrogen doses.
In traditional method nitrogen use efficiency is
less(20-30%).
Less availability of urea in the market due to
malpractices.
Black marketing of urea.
Higher prices of urea.
If use of less nitrogen-
• Leaf become yellow and the plant growth are
affected cause reduction of yield.

Due to excess use of nitrogen-
• Vegetative growth is more than
reproductive growth, cause crop lodging.
• Infestation of insect pest increases.
• Causes harmful effect on other nutrients.
• Causes environment and water pollution.
• More cost of cultivation.
Loss of nitrogen due to-
• Denitrification.
• Volatalization.
• Leaching.
• Runoff loss.

Solution:-
LCC help in determination of exact
dose of nitrogen requirement, hence
reducing the nitrogen losses.
Leaf color chart is the cheapest
and easiest tool for nitrogen
assessment and management.

What is leaf color chart (LCC).
The LCC had been jointly
developed by IRRI and Philippines
rice research institute (Philirice).
It is based on the leaf colour.
Easy Tools for the Need and
Assessment of Nitrogen in Paddy ,
maize, sugarcane, potato and
vegetable crops.

Principle:-
The intensity of the leaf colour
shows the relation of nitrogen to
photosynthesis.
The intensity of the leaf colour
is indicative of the amount of
nitrogen.

How to use leaf color chart?
 First of all, select the 10 healthy
plants from 14 days after
transplanting or 21 days after
sowing where plants extended in
equally.
Now compare with LCC of these
10 plants parts i.e. fully extended
leaf only.

Measuring time 8:00-10:00 AM or
2:00-4;00 PM and one important
thing is that – in the time of
measuring do not penetrate the light
in that plants so make a shade.
Only one person takes a reading
from first to last.
Take a reading every 7-10 days
interval.

Variety of
paddy
Critical
value
Nitrogen requirement
Non-
Basmati
4 28 kg N / ha or 62.5 kg
Urea
Basmati 3 23 Kg N/ha or 50Kg/ha
urea
Direct
Seeded
3 23 Kg N/ha or 50Kg/ ha
urea
Boro rice 4 35 Kg N/ha or 76Kg/ha
urea

Advantages :-
Increase crop production per hectare.
It saves 20-30 kg of nitrogen per hectare.
Improve nitrogen use efficiency of plants.
Easy to use .
Do not require any type of power.
Cheap than S.P.A.D.
Comparatively less effect of disease and
pest.

Limitation of LCC
Less famous.
Less availability.
Solar radiation.
Critical value is different for different
variety and crop.
Visibility of individuals.
Biological factors.
Other nutrient deficiency.

Precautions at the time of reading
Nitrogen fertilizer is applied when the reading is
less than critical value.
Only one person takes a reading from first to last.
Measuring time 8:00-10:00 or 2:00-4:00 is
effective.
At the time of measuring make shade on LCC on
leaf.
Left border 15 meter at 1-hectare area .
Do not pick the leaf.
Do not select disease and pest affected leaf.

S.L.
No.
Different cost Traditional method (cost,
yield, net income)
LCC Method (cost. Yield, net
income)
1. General cost Rs- 36872/ha Rs- 36872/ha
2. Nitrogen 140Kg/ha Rs-1625/ha 120Kg/ha Rs- 1337/ha
3. Labour 6 la/ha Rs-1800/ha 9 la/ha RS-2700/ha
4. LCC Rs-110/lcc
5. Total cost Rs-40297/ha Rs-41059/ha
6. Yield .
Paddy
45 Ql/ha Rs- 63000/ha 54Ql/ha Rs-75600/ha
7. Straw 68ql/ha Rs-13600/ha 81ql/ha Rs-16200/ha
8. Total income Rs-76600/ha Rs-91800/ha
9. Net income Rs-36303/ha Rs-50741/ha
10. Extra beneffit Rs- 14438/ha

Leaf Color chart (LCC)

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