Dr.LADA: Diagnosing Black Pepper Pests and Diseases with Decision Tree

Afzan Adam, Pei Ee Kho, Noraidah Sahari, Angela Tida, Yi Shang Chen, Kevin Muyang Tawie, Shafinah Kamarudin, Hazura Mohamad


Malaysia has the distinction of being the world’s fifth largest pepper producer country whereby 98% of the country's annual production comes from the State of Sarawak. However, crop loss due to pest and disease incidence has been identified as one of the major pepper production constraints. Inefficient advisory mechanism and assistance from extension staff due to technical and logistic limitations have hindered the pest and disease diagnosis effort for pepper. Currently, extension staff from MPB will have to travel to the rural farms when contacted, or during their visits to advice or treat the plants. Therefore, “DR.LADAâ€, was jointly developed by Malaysian Pepper Board and Universiti Kebangsaan Malaysia to diagnose six pests and ten diseases of pepper which commonly found in Malaysia and recommends appropriate management measures to solve the problems. This an interactive android-based mobile app used an inference engine utilises the forward-backward chaining methods to trigger the correct output from decision tree that inter-relates the expert rules which extracted and validated by Malaysian Pepper Board experts. Dr.LADA is a native mobile app develop on a java-based platform which provides fast performance, high degree of reliability and can be used without any internet connection. The app has been tested with 10 case studies carried out by Malaysian Pepper Board and scored 97% of accuracy. Having Dr.LADA, user can identify problems by answering a series of questions from symptoms shown by several plant parts. Therefore, the dependency of farmers on extension staff are reduced, and indirectly minimizing the extension activity costs.


agriculture app, diagnosing plant disease, decision tree

Full Text:



International Pepper Community, "County Profile: Malaysia," 2016.

Malaysian Pepper Board, "Georaphical Indication of Sarawak Pepper," Malaysian Pepper Board, Kuching, 2013.

K. S. Krishnamurthy, V. A. Parthasarathy, K. V. Saji and B. Krishnamoorthy, "Ideotype concept in black pepper," Journal of Spieces and Aromatic Crops, 2010.

J. Othman and Y. Jafari, "Selected Research Issues in the Malaysian Agriculture Sector," Jurnal Ekonomi Malaysia, vol. 48, no. 2, pp. 127-136, 2014.

A. H. Awang, K. hashim, Z. Ramli, N. Lyndon and M. N. S. Ali, "The effect of Tehnology Transfer, good agriculture practices on the productivity of independent palm oil smallholders," International Journal of Economic Perspectives, vol. 10, no. 4, pp. 300-3004, 2016.

A. Wahyudi and E. R. Pribadi, "Inovasi untuk meningkatkan daya saing lada Indonesia," Perspektif: Review penelitian tanaman industri, vol. 15, no. 2, pp. 134-145, 2016.

A. Bartlett, A. Andales, M. Arabi and T. Bauder, "A smartphone app to extend use of a cloud-based irrigation scheduling tool," Computers in electronics and agriculture, vol. 111, pp. 127-130, 2015.

W. Phonphan, "Water Demands Estimation on Agriculture Area using Geographic Information System," Int. Journal of Advances in Science, Engineering and Technology, vol. 6, no. 2, pp. 28-31, 2018.

L. Eng, "Pepper production technology in Malaysia," Malaysia Pepper Board, 2011.

R. J. Devraj , "Pulsexpert: an expert sstem for diagnosis and control of diseases in pulse crops," Expert systems with applications, 2011.

L. Gonzalez-Diaz, P. Martinez-Jimenez, F. Bastida and J. Gonzalez-Andujar, "Expert system for integrated plant protection in pepper (capsicum annuum l)," Expers sstems with application, 2009.

H. Ali, M. Lali, M. Nawaz, M. Sharif and B. Saleem, "Symptom based automated detection of citrus diseases using colour historam and textural descriptors," Computers and Electronics in agriculture, 2011.

S. S. Abdullah, R. M. Yusoff, N. A. Zainal, A. Abdullah, A. A. Bakar and K. Omar, "Paddy Abnormality Vision Recognition Tool Based on Multi-Layered Mamdani Fuzzy Modeling," Applied Engineering in Agriculture , vol. 30, no. 2, pp. 325-334, 2014.

K. Zhang, Y. Chai and S. Yang, "Self Organising feature map for cluster analsys in multi-disease diagnosis," Expert systems with Applications, 2010.

Z. Ibrahim, S. Mohd Noah and M. Noor, "Rules for Ontology Population from Text of Malaysia Medicinal Herbs Domain.," in Rough Set and Knowledge Technology..

N. I. Y. Saat and S. A. Mohd Noah, "Rule-based Approach for Automatic Ontology Population of Agriculture Domain," Information Technology Journal, vol. 15, no. 2, pp. 46-51, 2016.

S. Choudhary and N. Bhatnagar, "Determination Of Selected Pesticide Residues In Fruits Using Quechers Approach And Reversed-Phase High Performance Liquid Chromatography (RP-HPLC)," Int. Journal of Advances in Science, Engineeting and Technology, vol. 4, no. 1, pp. 19-22, 2016.

P. Sneha and V. Rakesh, "Automatic monitoring and control of shrimp aquaculture and paddy field based on embedded system and IoT," in Proceedings of the International Conference on Inventive Computing and Informatics, ICICI 2017, Coimbatore, India, 2018.

P. Hetal and P. Dharmendra, "SURVEY OF ANDROID APPS FOR AGRICULTURE," International Journal of Information Sciences and Techniques , vol. 6, no. 1/2, pp. 61-67, 2016.

S. Rajeswari, K. Suthendran and K. Rajakumar, "A smart agricultural model by integrating IoT, mobile and cloud-based big data analytics," in Proceedings of 2017 International Conference on Intelligent Computing and Control, Coimbatore, India, 2018.

D. P. Dahnil and R. Hassan, "Wireless sensor networks: a framework for community and educational gardens," Advanced Science Letters, vol. 24, pp. 1153-1157, 2018.

M. Hopkin, "17 Agriculture Apps That Will Help You Farm Smarter In 2017," CropLife, Danvers, Massachusetts, 2016.

S. Kamarudin, N. Sahari, R. Sulaiman, R. Alan and F. A. A. Zakry, "Kebolehcapaian nasihat bagi pengurusan penyakit tanaman oleh pekebun kecil lada hitam, Sarawak: Tinjauan awal," Geografia: Malaysia Journal of Society and Space, vol. 9, no. 2, pp. 17-26, 2013.

S. Kamarudin, R. Alan, N. Sahari, A. N. Abdul Wahab and R. Sulaiman, "Pembangunan dan Penilaian Model Hasrat Mengguna Aplikasi Mudah Alih Penasihatan Penyakit Tanaman Lada Hitam," Jurnal pengurusan, vol. 52, 2018.

A. Paulus, D. Megir and L. Eng, "Pepper technology package," Department of Agriculture Sarawak, 2006.

A. Paulus, S. Sim, L. Eng, G. Megir and J. and Rosmah, "Pepper production technology in Malaysia,," Malaysian Pepper Board., Kuching, 2011.

V. Lopez-Moralez, O. Lopez-Ortega, J. Ramos-Fernandez and L. Munoz, "Japiest: n integral intelligent system for diagnosis and control of tomato diseases and pests in hydroponic greenhouses," Expert systems with applications, 2008.

DOI: http://dx.doi.org/10.18517/ijaseit.8.4-2.6818


  • There are currently no refbacks.

Published by INSIGHT - Indonesian Society for Knowledge and Human Development