National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The experiment was carried out in the net house of Department of Nematology during rabi season 2019-20 to study the pathogenicity of M. incognita on pumpkin. The pumpkin cultivar Karbi-I was used to test the pathogenicity of M. incognita on pumpkin. The pots were arranged in completely randomized design with 5 replications for each treatment. The seedling were inoculated with second stage juvenile of M. incognita at three leaf stage in a logarithmic series of check, associated check, 10, 100, 1000, 10,000 juveniles (J2) per kg of soil. After 60 days of inoculation, it was recorded that the maximum plant height (142.20 cm), fresh and dry weight of shoot (41.26 and 7.08 gm), fresh and dry weight of root (21.04 and 6.85 gm) were recorded in the check, with no inoculation of M. incognita whereas, the minimum plant height (43.20 cm), fresh and dry shoot weight (17.00 and 1.27 gm ) and fresh and dry weight of root (9.98 and 1.01 gm) was recorded in the treatment with 10000-inoculum level of the nematodes. In respect of nematode multiplication, number of galls and eggmasses per root system increased with the increased inoculum level up to 1000 and then it decreased. The maximum number of galls with egg masses was recorded in the 1000 inoculum level and minimum was recorded in the 10 inoculum level. Further, It was observed that there was a progressive increase in nematode population with the increasing level of inoculum from 10 to 10,000 nematodes per pot. The maximum and minimum nematode population in soil was recorded in the treatment with 10000 and 10 larval inoculation per pot, respectively. From this experiment, it concluded that inoculum level at 1000 J2 of M. incognita per kg of soil showed pathogenic to pumpkin because a significant reduction of plant growth parameters of pumpkin was recorded at 1000 J2 inoculum level of M. incognita per kg of soil.
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