Black spot of Rose caused by Diplocarpon rosae

Aug 17, 2019 • 3:11 AM UTC

Unknown Location

140x Magnification

Microorganisms

Mooventhan Palanisamy

I am Dr. Mooventhan Palanisamy, currently serving as a Senior Scientist (Agricultural Extension) in the Agricultural Research Service (ARS) under the Indian Council of Agricultural Research (ICAR), India.

Black spot is caused by the fungus, Diplocarpon rosae . It is one of the most common diseases found everywhere roses are planted. The disease does not kill the plant outright, but over time, the loss of leaves can weaken the plant making it more susceptible to other stresses and winter damage.

??

Sign in to commentNobody has commented yet... Share your thoughts with the author and start the discussion!

More Posts from Mooventhan Palanisamy

Alternaria melongenae (Alternaria leaf spot of brinjal) observed under Foldscope

In situ observed Alternaria brassicicola causing leaf spot of Cabbage under Foldscope

Alternaria blight is a major disease of Linseed (Linum usitatissimum L) caused by Alternaria lini

Rice blast disease caused by Magnaporthe oryzae observed under Foldscope

False smut as a fungal disease caused by Ustilaginoidea virens

Training cum demonstration on role of Foldscope microscope in horticulture and assemble process to Rural Horticulture Extension Officers

Training cum demonstration on in situ diagnosis of plant pathogenic disease of kharif crops through the help of Foldscope at Krishi Vigyan Kendra, Janjgir Champa (C.G.)

Training cum demonstration on Foldscope: An efficient diagnosis tool for in situ identification of plant diseases at Krishi Vigyan Kendra, Janjgir Champa (C.G.)

Training cum demonstration on Foldscope as a novel tool for scientific diagnosis of plant pathogens to RAWE students at Krishi Vigyan Kendra, Raipur.

Training cum demonstration on digital diagnosis of plant pathogenic disease through Foldscope: Origami based paper microscope to RAWE students at Krishi Vigyan Kendra, Raipur (C.G.)

Training cum demonstration on in situ diagnosis of plant pathogenic fungi through mobile phone based-Foldscope microscope at Mangatola,Ambagarh Chowki, Chhattisgarh (India).

Training cum demonstration on utility of Foldscope microscope as a diagnosis tool for farmers at Sonsaytola (Ambagarh Chowki), Chhattisgarh.

Training on Foldscope microscope for in situ diagnosis of plant pathogenic disease of horticultural crops through the help of Foldscope at KVK Rajnandgaon (C.G.)

Botrytis blight of brinjal caused by the Botrytis spp, affects most vegetable and fruit crops, as well as a large number of flowers and weeds

Cephaleuros virescens -The algal red rust disease of mango has been observed under Foldscope in India.

Alternaria spp causing postharvest fruit rot of Mangifera indica in India

The powdery mildew of ber caused by Oidium erysiphoides is a major disease in India, causing great loss in productivity and quality of fruits

Rhizopus spp- The seedling blight of tomato disease is specific to the seedling raising in nursery boxes.

The ectophytic fungus- Erysiphe polygoni causing powdery mildew diseases in Black gram observed under Foldscope in sick field condition

Damping-off of tomato seedlings caused by Fusarium spp is a common fungal disease causing severe seedlings death in the nursery