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All Journal IAES International Journal of Artificial Intelligence (IJ-AI) Pelita Perkebunan
Sobir Sobir
IPB University
Agriculture, Biological Sciences & Forestry Computer Science & IT Engineering

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Spatial decision tree model for garlic land suitability evaluation Andi Nurkholis; Imas Sukaesih Sitanggang; Annisa Annisa; Sobir Sobir
IAES International Journal of Artificial Intelligence (IJ-AI) Vol 10, No 3: September 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijai.v10.i3.pp666-675

Abstract

Predicting land and weather characteristics as indicators of land suitability is very important in increasing effectiveness in food production. This study aims to evaluate the suitability of garlic land using spatial decision tree algorithm. The algorithm is the improvement of the conventional decision tree algorithm in which spatial join relation is included to grow up spatial decision tree. The spatial dataset consists of a target layer that represents garlic land suitability and ten explanatory layers that represent land and weather characteristics in the study areas of Magetan and Solok district, Indonesia. This study generated the best spatial decision trees for each study area. On Magetan dataset, the best model has 33 rules with 94.34% accuracy and relief variable as the root node, whereas on Solok dataset, the best model has 66 rules with 60.29% accuracy and soil texture variable as the root node.
Seedling Performance of Cocoa Genotypes (Theobroma cacao L.) in Drought Stress Condition. Agung Wahyu Susilo; Sobir Sobir; Adinda Wuriandani; Desta Wirnas
Pelita Perkebunan (a Coffee and Cocoa Research Journal) Vol 35 No 3 (2019)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iccri.jur.pelitaperkebunan.v35i3.375

Abstract

Drought stress can affect changes in physiological, morphological, biochemical,and molecular of plant. Plant in drought stress showed slower growthand development than in normal condition. This research aimed to determine the response of cocoa genotypes in seedling phase to drought stress in morphological and stomata character. This research conducted with split-plot design with main plot were water regimes (25% and 100% available water content). Eleven genotypes were used in this research consisted of six genotypes crosses and five genotypes parents. Variables observed were stem diameter, root volume, root length, leaf area, shoot fresh weight, root fresh weight, shoot dry weight, root dry weight, root/shoot ratio, and stomatal conductance. Drought stress decreased values associated with all observed morphological characters and stomata characters. Root/shoot ratio and stomatal conductance can be used to determine genotype with tolerance to drought. Sulawesi 3 x ICCRI 09 showed heighest in root/shoot ratio and stomatal conductance. Sulawesi 3 x ICCRI 09 can be used as candidate of plant material tolerant to drought.
Co-Authors Adinda Wuriandani Agung Wahyu Susilo Andi Nurkholis Annisa Annisa Desta Wirnas Sitanggang, Imas S.