Alternaria cyamopsidis

The sixteen varieties of cluster bean were screened against Alternaria blight of cluster bean caused by Alternaria cucumeriana var. cyamopsidis under field conditions at College Research Farm, College of Agriculture, Swami Keshwanand Rajasthan Agricultural University, Bikaner.

5p trinhthamhodang9 16-12-2020 7 1   Download

Clusterbean [Cyamopsis tetragonaloba (L.) Taub], an important legume crop in India. Alternaria spp. is an economically important pathogen widely distributed throughout the world and cause devastating disease on field crops. A total of eight commonly available botanicals were evaluated in the form of crude extracts against the growth of Alternaria cyamopsidis under in-vitro condition. Results of the in vitro evaluation of various botanicals against A. cyamopsidis revealed that all the test botanicals significantly inhibited mycelial growth of A. cyamopsidis, over untreated control.

4p kethamoi5 03-06-2020 13 0   Download

Clusterbean [Cyamopsis tetragonoloba (L.) Taub], is a drought resilient leguminous crop grown on sandy soils of arid and semi-arid regions. Clusterbean is infected by several fungal, bacterial and viral diseases but Alternaria blight disease caused by Alternaria cucumerina var. cyamopsidis (Rang. and Rao) considered as one of the most devastating diseases in the guar growing areas of Rajasthan.

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Alternaria blight is the most common and devastating disease caused by Alternaria cucumerina var. cyamopsidis in Clusterbean. This fungus grows well in Potato dextrose agar and Tomato dextrose agar medium under in vitro conditions. The growth of the fungus was tested using fifteen different media. PDA appeared to be better than other media for the growth of Alternaria cucumerina var. cyamopsidis. The growth characteristics of the fungus such as colour of the colony and sporulation were also different in different culture media. The colony of the fungus was dark brown in colour.

6p kethamoi5 03-06-2020 8 0   Download