Journal of Crop Protection
Journal of Crop Protection
JCP
Agriculture
http://jcp.modares.ac.ir
1
admin
2251-9041
2251-905X
en
jalali
1394
12
1
gregorian
2016
3
1
5
1
online
1
fulltext
en
Quantitative detection of soybean rust using image processing techniques
Rust caused by <em>Phakopsora pachyrhizi </em>Syd<em>. </em>is a major constraint to soybean product in Asia. Early detection and possibilities of controlling plant diseases by the integration of several image processing methods has been the subject of extensive research. The main contribution of this paper is to present different methodologies for quantitatively detecting soybean rust at each stage of disease development, identify disease even before specific symptoms become visible and grade based on percentage of disease severity. Severity of rust infection levels at each stage of disease development was observed for 25 days on soybean leaf. Then color distribution and pixel relationship in rust infected leaf image was calculated based on global and local features for quantifying rust severity. Further, rust disease was categorized into grades based on infection severity levels and percentage disease index (PDI) was calculated. The maximum PDI of 95.5 was observed at 25<sup>th</sup> day and minimum PDI of 0.2 was observed at 6<sup>th</sup> day.
disease severity,color features,global region, local region, soybean rust
75
87
http://jcp.modares.ac.ir/browse.php?a_code=A-3-1000-6540&slc_lang=en&sid=3
Jagadeesh Devidas
Pujari
Jagadeesh Devidas
Pujari
100319475328460060104
100319475328460060104
No
S. D. M. College of Engineering and Technology, Dharwad, India.
S. D. M. College of Engineering and Technology, Dharwad, India.
Rajesh
Siddarammayya Yakkundimath
Rajesh
Siddarammayya Yakkundimath
100319475328460060105
100319475328460060105
Yes
K. L. E. Institute of Technology, Hubli, India.
K. L. E. Institute of Technology, Hubli, India.
Shamrao
Jahagirdar
Shamrao
Jahagirdar
100319475328460060108
100319475328460060108
No
University of Agricultural Sciences, Dharwad, India.
University of Agricultural Sciences, Dharwad, India.
Abdul
Byadgi
Abdul
Byadgi
100319475328460060107
100319475328460060107
No
University of Agricultural Sciences, Dharwad, India.
University of Agricultural Sciences, Dharwad, India.