At Jyothy Institute of Technology (Bangalore) farm, infected leaves were found as shown below

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 On both sides of leaf surface numerous small, superficial and blackish distinct tar like spots which  surrounded by yellow zone were observed. Along with the tar spots, there was light yellowish stroma and mats of hyphae of fungus were found on the upper surface of leaves. They were observed under foldscope and spores were found.

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 <img alt="DSC_0144" class="wp-image-129911 gcloudimg" data-attachment-id="129911" data-comments-opened="1" data-id="129911" data-image-meta='{"aperture":"2","credit":"","camera":"G3416","caption":"","created_timestamp":"1549109010","copyright":"","focal_length":"4.22","iso":"50","shutter_speed":"0.005092","title":"","orientation":"3"}' data-image-title="DSC_0144" data-link="https://microcosmos.foldscope.com/?attachment_id=129911" src="https://storage.googleapis.com/microcosmosdelta.appspot.com/images/transfer_129897/DSC_0144.jpg"/>
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 Spores of Rhystima
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 <img alt="DSC_0163" class="wp-image-129912 gcloudimg" data-attachment-id="129912" data-comments-opened="1" data-id="129912" data-image-meta='{"aperture":"2","credit":"","camera":"G3416","caption":"","created_timestamp":"1549109919","copyright":"","focal_length":"4.22","iso":"50","shutter_speed":"0.009501","title":"","orientation":"3"}' data-image-title="DSC_0163" data-link="https://microcosmos.foldscope.com/?attachment_id=129912" src="https://storage.googleapis.com/microcosmosdelta.appspot.com/images/transfer_129897/DSC_0163.jpg"/>
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 Spores of Rhystima with lactophenol cotton blue
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 It was tar leaf spots. This caused by
 
 Rhytisma acerinum
 
 fungus.

Tar leaf spot- #Indiafoldscopephase 1

Soumitra Banerjee | Thu Sep 02 51115 21:33:20 GMT+0000 (Coordinated Universal Time)

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Foldscope Lens Magnification

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