• C. Senthilkumar
• M. Kamarasan

In the study on leaf disease detection can be a helpful aspect in keeping an eye on huge area of fields of crops, but it’s important to detect the disease as early as possible. Our survey paper mainly focuses on the research oriented techniques which detects the leaf diseases to the earliest and image processing methods have been proposed by the authors which enhances the crop yield thus in stopping various bacterial, virus, fungal and nematodes. Summary of various papers have been drawn, which gives us clear idea on how to improve other parameters which in turn helps us to stop the diseases. Plant disease detection is emerging field in India as agriculture is important sector in Economy and Social life. Earlier unscientific methods were in existence. Gradually with technical and scientific advancement, more reliable methods through lowest turnaround time are developed and proposed for early detection of plant disease. Such techniques are widely used and proved beneficial to farmers as detection of plant disease is possible with minimal time span and corrective actions are carried out at appropriate time. In this paper, we studied and evaluated existing techniques for detection of plant diseases to get clear outlook about the techniques and methodologies followed.

leaf disease Detection, nematodes, Image processing Techniques

"A SURVEY ON LEAF DISEASE DETECTION USING IMAGE PROCESSING TECHNIQUES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.889-900, July-2018, Available :http://www.jetir.org/papers/JETIR180Z021.pdf

"A SURVEY ON LEAF DISEASE DETECTION USING IMAGE PROCESSING TECHNIQUES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp889-900, July-2018, Available at : http://www.jetir.org/papers/JETIR180Z021.pdf