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Computer Vision System for Measuring Air-Pruned Root Growth in Tray Cells

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Pp. 119-126 in Proceedings of the World Congress of Computers in Agriculture and Natural Resources (13-15, March 2002, Iguacu Falls, Brazil)  701P0301.(doi:10.13031/2013.8321)
Authors:   M. Uchigasaki, S. Tojo, S. Miyamoto, K. Serata, K. Watanabe, T. Aoyama and B. K. Huang
Keywords:   Vision system, Image database, Root growth analysis, Root density and distribution, Air-pruning tray/pot/container, Computer simulation

A computer vision system was developed for quantitatively evaluating the peripheral root growth and development in a plant/seedling/cutting/plug growing tray-cell/pot/container to study the beneficial effects of air-pruning on plant-root growth. A computer program was developed for in-situ measurement technique to analyze the peripheral root density and distribution (PRDD). The methodology was applied to measure root development of tomato seedlings. The specific PRDD values were calculated for air-pruning tray cells and non- air-pruning tray cells under five stages of the seedling growth. Results showed that air-pruned root development was far superior to non-air-pruned root growth. Root bindings were observed in non-air-pruning cells even though the tray cells were properly shaped (small at the top and gradually get larger at the bottom) due to non-air-pruning closed bottom. Analysis of the results showed that the technique can be useful for evaluating peripheral root architecture for various designs of tray cells and pots/containers as well as for analyzing the effects of air-pruning and determining their efficient size and design.

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