During systematic survey of parasitic fungi of Faizabad (U.P.), the authors observed leaf spot disease of Desmodium gyrans (Cercospora canescens), Phragmites communis (Alternaria tenuissima) and a foot rot disease of Coriandrum sativum (Torula herbarum f. quaternella) caused by fungi given in the parenthesis. The specimen has been deposited in the Herbarium, Commonwealth Mycological Institute, Kew, England and a part of the collection has been deposited in the Mycological Herbarium, Botany Department, K.S. Saket Post-Graduate College, Faizabad. Symptoms of each disease are briefly given below. 1. Leaf spot disease of Desmodium gyrans: The disease...
Wednesday, 21 November 2018
Wednesday, 7 November 2018
A new Aspergillus storage rot of Mandarin orange in India
Apparently, the fruits appeared quite normal. When ring was removed, a thick mycelial mat was found along with the heavy sprouting of conidia of the fungus particularly at the placental region. The infection gradually penetrated the deeper regions of the fruit and within 5-6 days entire fruit was involved and become rotten. The pathogenecity tests gave positive results. The fungus was cultured on PDA and identified to be Aspergillus aculeatus Iiz. Earlier A. aculeatus has not been found on Citrus reticulata fruits causing soft rot in India. The specimen has been deposited at...
Friday, 2 November 2018
A Modified Approach in Substrate Preparation Technique for Small Scale Oyster Mushroom Farming
Aims: Cultivation of oyster mushrooms has increased vastly in a global scale during last few decades. Contaminants and indigenous microflora present in the substrate may led to the low productivity of mushrooms. Keeping this in mind, the present study was under-taken with slight modification in substrate preparation technique to eliminate dust particles from the substrate and to assure contamination free mushroom production. Study Design: Comparative evaluation between modified approach and control beds. Place and Duration: The study was carried out in Shri Laxman Prasad Pyare Lal Agro Products, Ayodhya during 2017. Methodology: The...
Wednesday, 31 October 2018
A new leaf spot disease of Nyctanthes arbor-tristis caused by Myrothecium verrucaria from India
During systematic survey of parasitic fungi at Faizabad (U.P.), author came across a new leaf spot disease of harsingar (Nyctanthes arbor-tristis L.) caused by Mycothecium verrucaria (Alb. & Schw.)Ditam. ex Fr. The small spherical yellowish leaf spots become visible in the month of September. With time the spots increase in size and finally become greyish followed by light brown and the death of the leaf tissues. The pathogen was isolated on PDA medium by usual method. Healthy leaves when inoculated artificially by spore suspension, developed spots characteristics in nature after 15 days. Reisolations...
Saturday, 20 October 2018
Notes on new fungal disease of Solanum tuberosum
In February, 1979, The author noticed stems of Solanum tuberosum L. infected by a fungus causing severe necrosis in his kitchen garden. On examination, the causal organism of the disease was identified as Mucor heimalis Wehmer. Earlier S. tuberosum has not been found to get infected by Mucor heimalis in India and this is new report. The disease appeared as small moist area on the stem just above the soil. The lesion enlarged radially and showed fluffy growth of fungus within a week followed by stem necrosis and ultimate death of plants desiccation....
Thursday, 4 October 2018
Effect of extraneous matter on juice extraction and Pol% cane
The present study was carried out in the month of March, April and May consisting three elite sugarcane varieties, viz., CoS 8436, CoS 8432 and CoSe 92423 to evaluate the effect of extraneous matter (trash) on extraction % of juice and Pol% cane. The result revealed that the extraneous matter affected extraction % and Pol% cane adversely, at a significant level both at the varietal level as well as at staling hours. Both the aforesaid parameters decrease with the increasing months along with the data calculated over the varieties, therefore, it was concluded...
Tuesday, 11 September 2018
A new fungal disease of Phlox drummondii in India
During March, 1976, the infected leaves of Phlox drummondii were collected from Govt.Garden Faizabad. On examination Melanospora zamiae Corda was identified as causal organism. Earlier this fungus has not been found causing a disease on P. drummondii in India. The spots appeared to be earthy grey to light brown, irregular, not exceeding 0.5 cm square area of the leaf on the ventral surface. Artificially infected healthy plants of Phlox drummondii developed characteristic disease spots within 16-20 days. Reisolations from artificially produced spots gave Melanospora zamiae. The specimen has been deposited in the Herbarium...
Sunday, 19 August 2018
Fungi on decomposing spadix of Pandanus fascicularis
Investigation into fungi causing deterioration of different parts of the shoot have been made by Hogg and Hudson (1966), Hudson and Webster (1958), Kamal and Singh (1970), Webster (1957) and Yadava (1966). Such studies on the modified part of the shoot are scarce and scanty. Undoubtedly, some fragmentary reports in connection with the floral infection of one or the other part of the flower, though available; yet are the local interest (Plate and Schineider, 1966; Schonbeck, 1967 and Welfswinkee, 1966). The present study is an attempt to explore the organisms associated with the...
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