A Method for Quantifying Whole-tree Pruning Severity in Mature Tall Spindle Apple Plantings

Effects of Pruning on the Apple Tree: from Tree Architecture to Modeling

Arboricultural practices such as pruning, artificial bending or fruit thinning are crucial interventions in orchard management and are used for controlling tree size, penetration of light into the canopy and the equilibrium between vegetative and reproductive growth. The aim of this project is to explore the possibility of integrating such practices in a model of apple tree development. To this...

A quality index for decision tree pruning

Decision tree is a divide and conquer classification method used in machine learning. Most pruning methods for decision trees minimize a classification error rate. In uncertain domains, some sub-trees which do not decrease the error rate can be relevant to point out some populations of specific interest or to give a representation of a large data file. We present here a new pruning method (call...

Optimization of a Fixed Spraying System for Commercial High-Density Apple Plantings

The application of pesticides to fruit throughout the Northeastern US, as in the rest of the world, gives rise to concern, primarily due to inaccurate application, which often results in high residues and environmental pollution. Inaccuracy, due to overor under-application, may result in high levels of disease or insect activity. Air and water pollution resulting from pesticide drift is a major...

Detection and Position Method of Apple Tree Image

Apples should be quickly and correctly detected from their surroundings for the apple harvesting robot. The basic color feature was extracted from FuJi apple tree images and analyzed by the statistical analysis method. Accordingly, a new apple detection method was proposed to position the centroid of picking apples. The color difference was used to segment apples from their surroundings. Then t...

Risk Management in Game-tree Pruning Risk Management in Game-tree Pruning