1. FERTILIZER RECOMMENDATION FOR PADDY

2. Content Introduction Recommendation variation
Fertilizer Recommendation-2001
Subsidy scheme
Conclusion

3. Why need Fertilizer ???
The most crucial factor for the yield of rice is soil nutrients
The objective of fertilizing is to replenish the soil from loss of soil nutrients via;
continuous cultivation on same land
removal of harvest and straw
leach to soil with water and decomposition
So to get high yield need fertilizer

4. Recommendation varies……..
Agro-Climatic Region -
According to Agro-Climatic zone’s potential of yield the areas are categorized in to 3 groups;
Dry and Intermediate zone
Upcountry and Mid Country wet and Intermediate zone
Wet zone
Age category- 3M,3 ½ M ,4M,4 ½ M

5. Cont……… Potential yield
recommendations for expected yield 80 , 100 ,120 , >140 bushels per acre
Cropping system – Rice-Rice , Rice-vegetable Rice-OFC
Soil type

6. Special consideration on 2001 recommendation

7. Improvement of soil fertility
According to latest results SL soils deficit for:
Organic matter 60%
Phosphorus 70%
Exchangeable potassium65%

8. Organic manure recommendation
Following quantities of organic manures are recommended
Along with first ploughing -total amount of previous season rice straw as small heaps
After second ploughing
-5t/ha of FYM or compost or poultry litter (layers)
-2.5 t/ha of green manure
At final stage of land preparation
250 kg of half burn paddy husk charcoal

9. Inorganic fertilizer….
DOA always recommend straight fertilizers
(cheap and free of adulterant , can be used in necessary amounts)
Apply BD before sowing or planting and prior to leveling
At 2nd ,5th ,7-8th weeks after sowing apply MOP and TSP
Use more Urea for 2 ½ M and 3M variety
Apply the urea amount in two times with in the particular week for more results
If it is for seed paddy production apply 10 kg of Urea (of 3rd TD) before flowering

10. 2. Inorganic fertilizers –recommended on the basis of yield potential of given area
Agro -ecological zone yield potential
LCWZ and LCIMZ a. 7 t/ha
b. 6t/ha
c. 5t/ha
UCWZ , MCWZ and part of a. 5t/ha
Gampaha district b. 4t/ha
LCWZ a. 5t/ha

11. 3.Zink Sulphate 4. Nitrogen fertilizer New recommendation 2001 onwards
-until 2001 only N ,P ,K recommended
-now 5 kg/ha of ZnSo4 only for Maha season
4. Nitrogen fertilizer
Basal 12.5 kg/ha of Urea as basal and 3 to 4 applications as TDM
Age class No of applications
M 3
M 4

12. 5.Phosporus fertilizer Agro Ecological Zone Yield Potential (t/ha)
Amount of TSP (kg/ha)
LCDZ and LCIMZ 5 6 7
62.5
87.5
112.5
UCWZ and MCWZ 4
LCWZ
To all paddy fields

13. 6. Potassium fertilizer Agro Ecological zone Yield Potential (t/ha)
Amount of MOP (kg/ha)
LCDZ and LCIMZ 5 6 7
Basal At tillering at PI
UCWZ and MCWZ 4
LCWZ
To all paddy fields

14. Recommendation 1 Recommendation 2 AEZ : LCDZ and IZ Districts :
Anuradhapura ,Polonnaruwa , Ampara ,Trinco, Batticalo, Kurunegala,Vavunia and some areas of Ratnapura, Matale,Badulla, Matara,Kandy
Yield levels :100,120,>140 bushel per acre
Recommendation 2
AEZ :UP and MC wet zone, IZ and part of Gampaha District
Districts : Nuwara-Eliya and some areas of Kandy,Badulla,Matale,Gampaha
Yield levels : 80 ,100 bushels per acre

15. Recommendation 3 AEZ : LCWZ (soil category 1)
Districts : Colombo ,Kalutara , Galle ,and some areas of Gampaha , Ratnapura and Matara
Yield levels : 80 bushels per acre only
AEZ : LCWZ (soil category 11)
Districts : Gampaha ( Mirigama ,Attanagalla, Divulapitita and Minuwangoda
Yield levels : 80 ,100 bushels per acre

16. Fertilizer Recommendation 1 for Paddy
3 month variety
To obtain 100 bu/ac
To obtain 120 bu/ac
To obtain 140 bu/ac
Fertilizer (Kg/ac)
Urea
TSP
MOP
Basal dressing 5 25 15 35 45
1st top dressing - 40 50
2nd top dressing 10 60 70 20
Total requirement 90
105 30
125
Source: Rice Research Institution, Batalagoda, 2004

17. Important
When use inorganic fertilizers always apply with organic fertilizers
For higher yielding areas in Gampaha district recommended Urea amount (BD) is higher than other areas
Areas in Wayamba province which receive higher rainfall a special fertilizer recommendation is used.

18. Triple Super Phosphate (TSP)
Common fertilizers
Source
Nutrient(%)
Price (Rs/Kg)
Urea
Nitrogen(45)
65.00
Triple Super Phosphate (TSP)
Phosphorous
(21)
70.00
Murate of Potash (MOP)
Potassium (60)
100.00
ZnSo4
Zink
140.00

19. Factors determining fertilizer use efficiency
Soil
Crop and variety
Season
Time of planting
Water management
Weed control
Insect and disease control
Cropping sequence
Time of fertilizer application

20. Fertilizer subsidy scheme
Main objective: To make available the fertilizers cheaply and encourage its wider use to enhance the productivity
(High yielding varieties are highly fertilizer responsive)
First introduced in 1962
Urea, Sulphate of Amonia, Muriete of Potash (MOP) and Triple Super Phosphate (TSP) were subsidized first.
Reintroduced in 1994

21. Cont…….
During the period 1994 to 1997, the fertilizer subsidy scheme underwent several changes
In 1997 the government decided to restrict the fertilizer subsidy only to Urea
December 2005, the government decided to
reintroduce subsidy scheme for all types of fertilizer by fixing their selling price. However, this scheme is restricted only for paddy farmers.
Expenditure on fertilizer subsidy in Sri Lanka Rs. 6,846 mn in 2005

22. Thank you