Which disease is caused by sclerospora graminicola?
One of the most important diseases of pearl millet is downy mildew, also known as green ear, caused by the fungus Sclerospora graminicola (Sacc.) J. Schröt that destroys much of the crop every year. The resting spores of the fungus in the soil constitute the primary source of inoculum.
What are the symptoms of downy mildew of Bajra in brief?
Downy mildew
- The characteristic symptoms of the disease are pale, chlorotic, broad streaks extending from base to tip of leaves.
- At the advancement of disease, the leaf streaks turn brown and the leaves become shredded longitudinally.
- The rapid growth of fungal pathogen is favoured by rainy and humid environment.
What is the causal organism of downy mildew of bajra?
Downy mildew or ‘green ear’ is a very destructive disease of pearl millet in Asia and Africa wherever pearl millet is grown as a food and fodder crop. The disease is soil borne in nature and caused by a fungus Sclerospora graminicola.
What is white rust of crucifers?
White rust, caused by Albugo candidans, is a disease of crucifers that causes yield loss through defoliation, root injury, and reduction of market quality. Spinach, horseradish, and mustard are affected more seriously than other crucifers.
Why is the blast of rice called by blast?
Infection of the necks can be very destructive, causing failure of the seeds to fill (a condition called blanking) or causing the entire panicle to fall over as if rotted. The rice blast fungus can also infect the panicles as the seeds form (Figure 7)….Rice seeds.
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How do you control downy mildew of Bajra?
The number of plants showing downy mildew infection was recorded 30, 45 and 65 days after sowing. The results showed that seed treatment with Apron (2 g/kg) + foliar spray of Ridomil (0.6%) significantly reduced the incidence of downy mildew incidence to the minimum of 4.50% from 53.33% in the control.
Which are the resistant varieties of Bajra to downy mildew disease?
resistant varieties like HB-15, PHB-10 and PHB-14 has been recommended. seed treatment with fungicide has also been found effective for downy mildew.
Which rust of crucifers is caused by?
Albugo candida
White rust of crucifers is caused by a fungus called Albugo candida. This disease causes swelling in the roots and white blister-like eruptions on leaves and stems.
What is the symptoms of black rot of crucifers?
Symptoms on cauliflower often appear as black flecks or scorched leaf margins. The curds of infected cauliflower heads often become blackened. Figure 3. Black rot symptoms appear as dead tissue at the tips of (a) kale, (b) cauliflower, and (c) cabbage leaves.
Which fungicide is used for rice blast?
The triazole and strobilurin fungicides showed significant effects in controlling dirty panicle and rice blast diseases under field conditions.
Which fungicide is used for control of downy mildew?
Chlorothalonil and mancozeb are the main protectant fungicides for downy mildew.
What is Sclerophthora macrospora?
Sclerophthora macrospora is a protist plant pathogen of the class Oomycota. It causes downy mildew on a vast number of cereal crops including oats, rice, maize, and wheat as well as varieties of turf grass. The common names of the diseases associated with Sclerophthora macrospora include “crazy top disease” on maize…
What is Sclerospora graminicola?
Sclerospora graminicola is a plant pathogen infecting maize and foxtail and pearl millet. Sclerospora graminicola was originally described by Saccardo in 1879 as Protomyces graminicola from infected Setaria verticillata.
What is Peronosclerospora?
Commonly known as Philippine downy mildew, this disease is caused by the species Peronosclerospora philippinensis of the fungal-like protist class Oomycetes, which also has members such as water molds and Phytophthora infestans, which caused the potato blight that led to the Great Irish famine.
What is the history of Sclerospora philippinensis?
His studies showed that the species had been present in the Philippines for more than 10 years already. It was not until 1920 when William Weston named it as Sclerospora philippinensis in a report, marking its similarities to its close relative Sclerospora sacchari.