The document discusses identifying the best rice seed variety and new potential areas for rice production in Lombok Island, Indonesia. It used the analytic hierarchy process to determine that Pandanwangi was the best variety based on ecological, economic, and social factors. GIS and remote sensing data were used to identify potential new rice growing areas, finding 3.19% of the land was most suitable with maximum productivity, 2.73% was also suitable, and 1.24% needed specific treatments. The results were published on a web-based tool to aid stakeholders in decision making about rice production.

1. Identification of the best rice seed variety
and new potential area for paddy field in
Lombok island, Indonesia
Serge Claudio Rafanoharana

2. Outline
• Background
• Objectives
• Methodology
• Results and Discussion
• Conclusion

3. Background
• Rice is the main food in many
areas especially in Asia
• Study about rice production is
becoming one of the main
researches conducted in those
areas

4. Problem Statement
• Complexity of the
decision IR68
• Inconsistency of
the decision
maker
• Conflicting
between the
individuals
• Variation of
perception from
one individual to
another

5. Goals
• To identify the best rice seed variety to be
planted in a paddy field based on ecologic,
economic, and social factors
• To identify the potential area for paddy
field to increase rice production
• To develop Internet application to publish
the result

6. Brief solution

7. METHODOLOGY

8. General Flow of the Study

9. Study Area
Java Island Lombok Island

10. Analytic Hierarchy Process
The analytic hierarchy process (AHP), which provides a
proven, effective means to deal with complex decision
making, was first introduced by Thomas Saaty in 1970’s
Evaluation phase is divided
into four steps given below;
1. Generate pairwise matrices
2. Generate the weights of the
measures
3. Normalize weights to get
the consistency among
measures
4. Calculate the overall
ratings

11. Analytic Hierarchy Process
• STATE THE OBJECTIVE:
SELECT THE BEST RICE SEED VARIETY
• DEFINE THE CRITERIA:
LAND SUITABILITY, PRODUCTIVITY,
FARMERS PREFERENCE
• PICK THE ALTERNATIVES:
PANDANWANGI, RAJALELE, IR68

12. Analytic Hierarchy Process
AHP Tree

13. Identification of the potential area for
paddy field

14. Landsat TM
Supervised Classification
Geo referenced Image
Dark Pixel Correction
Atmospheric Correction
Select Training Area
Calculate Region
Statistics
Image Classification using
Maximum Likelihood
Display
And Evaluate
Selecting Training Area Classification
Result
Image Classification

15. Web-based GIS Architecture

16. RESULTS

17. Pair-wise Comparisons
USING PAIRWISE COMPARISONS, THE RELATIVE IMPORTANCE
OF ONE CRITERION OVER ANOTHER CAN BE EXPRESSED
1 equal 3 moderate 5 strong 7 very strong 9 extreme
Land Productivity Farmers Priority Vector
Suitability Preference
Land Suitability 1 3 5 0.62
Productivity 1/3 1 4 0.28
Farmers Preference 1/5 1/4 1 0.10
Criteria Weights
Land Suitability: 0.62
Productivity: 0.28
Farmers Preference: 0.10

18. Ranking of alternatives PW: Pandanwangi
RL: Rajalele
IR68: IR68
Land Suitability
LS PW RL IR68 Priority Vector
PW 1 3 5 0.61
RL 1/3 1 1/4 0.13
IR68 1/5 4 1 0.26
Productivity
PR PW RL IR68 Priority Vector
PW 1 4 3 0.62
RL 1/4 1 2 0.22
IR68 1/3 1/2 1 0.16
Farmers Preference
FP PW RL IR68 Priority Vector
PW 1 5 7 0.73
RL 1/5 1 3 0.19
IR68 1/7 1/3 1 0.08

19. The highest rank is Pandanwangi, meaning that the best variety of rice
seed recommended to be planted in the paddy field is Pandanwangi with
a percentage of 62%, followed by IR68 at 22% and by Rajalele at 16%.

20. Graphical representation of the benefits and costs
0.7
0.6 Pandanw angi
0.5
Pandanw angi
Benefit
0.4
Rajalele
0.3
IR68
0.2 IR68
Rajalele
0.1
0
0 0.1 0.2 0.3 0.4 0.5 0.6
Cost
If considering the costs and benefits, the highest score is the Rajalele
variety, followed by IR68 and Pandanwangi with score 1.92, 0.96, and
0.77 respectively. In general, we chose the alternative with lowest cost
and highest benefit if considering costs and benefits.

21. Supervised Classification
Image classification process Image classification result

22. Terrain Processing
Digital Elevation Shuttle Radar Topography Slope
Mission (SRTM) Data

23. Model to identify the potential area for paddy field

25. Web-based Tool for Group Decision Making
Gov’t
Farmers
Local Scientists and
Communities Experts

27. Conclusion
• This study used AHP in Pandanwangithe best rice seed variety to be planted in a
order to identify variety got the highest score with
paddy field based on ecologic, economic, and social factors. The Pandanwangi
variety got the highest score with 0.62 which is 62%,IR68 with 0.22 ( best rice seed
0.62 (62%), followed by meaning that the 22%) and
variety recommended to be last one is Rajalele withPandanwangi. It is followed
the planted in the paddy field is a score of 0.16 (16%).
by IR68 with approximately 0.22 which is 22% and the last one is Rajalele with a
score of 0.16 which is 16%. The consideration of costs and benefits showed that the
highest score is the Rajalele variety, followed by IR68 and Pandanwangi with score
1.92, 0.96, and 0.77 respectively. In general, we chose the alternative with lowest
cost and highest benefit.
• We used Model3.19% (146 km2)functionality offered within ArcGIS software. The
Builder which is a of the total area (4564 km2) are best areas
use of Model Builder is very interesting and helpful. There is no need to execute one
by one all of the processes. maximum productivity, run the model km2) as
with Once the model is built, we 2.73% (125 and all
processes are executed. The potentialbe shown by adding the proper layer to the
result can areas, and 1.24% (57 km2)
table of content tools. The result showed that 3.19% (146 km2) of the total area (4564
km2) are best areas with maximum productivity, areas with km2) as treatment.
considered as potential 2.73% (125 specific
• potential areas, and 1.24% (57 km2) considered as potential areas with specific
treatment. These areas are mainly located in the west and south part of the Island.
• Finally, the new potential area for paddy field is published
on the Internet. Since the system is Web-based oriented, it is very helpful for
the end users because the World Wide Web supports e-business including internal and
external global communications, decision making, and collaboration among stakeholders.

28. Thank You