Biomanagement of root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood - wilt fungus, Fusarium oxysporum disease complex in vegetable cowpea (Record no. 289329)
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000 -LEADER | |
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fixed length control field | 05024nam a22001937a 4500 |
082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
Classification number | 592.57 |
Item number | KAT/BI PG |
100 ## - MAIN ENTRY--PERSONAL NAME | |
Personal name | Katakam Rupini Krishna |
245 ## - TITLE STATEMENT | |
Title | Biomanagement of root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood - wilt fungus, Fusarium oxysporum disease complex in vegetable cowpea |
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
Place of publication, distribution, etc | Vellayani |
Name of publisher, distributor, etc | Department of Nematology, College of Agriculture |
Date of publication, distribution, etc | 2021 |
300 ## - PHYSICAL DESCRIPTION | |
Extent | 111p. |
502 ## - DISSERTATION NOTE | |
Dissertation note | M Sc |
520 ## - SUMMARY, ETC. | |
Abstract | The study entitled „Biomanagement of root knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood - wilt fungus, Fusarium oxysporum disease complex in vegetable cowpea‟ was conducted at Department of Nematology, College of Agriculture, Vellayani, Thiruvananthapuram during 2019-2021. The objectives were to study the interaction between M. incognita and F. oxysporum and to evaluate the efficacy of biofumigation, biocontrol agents and organic amendments in the management of nematode - fungus disease complex in vegetable cowpea. An pot culture experiment was laid out in completely randomized design to study the interaction between M. incognita and F. oxysporum and their effect on nematode multiplication, disease incidence and growth parameters in vegetable cowpea. In Interaction study, the treatments were M. incognita alone, F. oxysporum alone, simultaneous inoculation of M. incognita and F. oxysporum, M. incognita + F. oxysporum one week after nematode inoculation, F. oxysporum + M. incognita one week after fungus inoculation and uninoculated control. M. incognita was inoculated @ one J2 g soil-1 and F. oxysporum mass multiplied in sand maize medium (20×107 cfu g-1 ) was mixed in soil @ 500 g in different intervals. The results unveiled that highest cohabitation of both the pathogens was observed when M. incognita was inoculated seven days prior to F. oxysporum inoculation with lowest shoot length (11.15 cm) and root length (9.26 cm). Meanwhile, lowest number of nodules 5 g root-1 (14.00) was recorded in plants treated with M. incognita alone. Highest reproduction factor of 1.67 was observed in M. incognita alone followed by M. incognita + F. oxysporum one week after nematode inoculation (1.14). Similar trend was observed in number of galls, egg masses and eggs per egg mass. Highest (100.00%) and early (23 days) disease incidence was recorded in plants inoculated with M. incognita + F. oxysporum one week after nematode inoculation 120 Field study was conducted to evaluate the efficacy of biofumigation using crop residues of cauliflower, bioagents (Pseudomonas fluorescens, Trichoderma viride, Purpureocillium lilacinun) and organic amendment (neem cake) in comparison to chemical (Fluopyram 400 SC). The experiment was laid out in CRD with eight treatments and three replications. Variety used was Vellayani Jyothika. All treatments showed statistically significant reduction in nematode population in comparison with control. Among the non chemical methods, P. fluorescens @ 10 g kg seed-1 + neem cake @ 100 g m-2 showed maximum reduction in nematode population in soil (88.68 per cent over control) and root (83.68 per cent over control). Lowest reproduction factor was recorded in chemical (0.14) followed by P. fluorescens @ 10 g kg seed-1 + neem cake @ 100 g m-2 (0.30), T. viride enriched FYM @ 20 g m -2 (0.69) and P. lilacinum enriched FYM @ 20 g m -2 (0.70). Similar trend was observed in the case of number of galls also. Effect of P. fluorescens @ 10 g kg seed-1 + neem cake @ 100 g m-2 found to be equally effective to P. lilacinum enriched FYM @ 20 g m -2 in reducing number of egg masses and eggs per egg mass giving 52.51 to 76.74 per cent reduction over control. Lowest disease incidence (27.76 %) was recorded in fluopyram 400 SC @ 250 g a.i. ha-1 , P.fluorescens@ 10 g kg seed-1 + neem cake @ 100 g m-2 and T. viride enriched FYM @ 20 g m-2 . Regarding biometric characters (shoot length, fresh and dry shoot weight, root length, fresh and dry root weight) and yield, effect of P. fluorescens @ 10 g kg seed-1 + neem cake @ 100 g m-2 was statistically on par with chemical fluopyram giving 56.81 to 76.90 per cent increase over control. Highest number of nodules (87.00 5 g root-1 ) was observed in P. fluorescens @ 10 g kg seed-1 + neem cake @ 100 g m-2 and it was significantly superior to all other treatments. From this study, it was concluded that highest interactive effect between nematode and fungus was recorded when M. incognita inoculated seven days prior to F. oxysporum inoculation.Application of P. fluorescens @ 10 g kg seed-1 + neem cake @ 100 g m-2 can be recommended for 121 management of M. incognita and F. oxysporum disease complex in organic cultivation of cowpea. |
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
Topical term or geographic name as entry element | Nematology |
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
Topical term or geographic name as entry element | Meloidogyne incognita |
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
Topical term or geographic name as entry element | Wilt fungus |
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
Topical term or geographic name as entry element | Fusarium oxysporum |
700 ## - ADDED ENTRY--PERSONAL NAME | |
Personal name | Nisha, M S (Guide) |
942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
Source of classification or shelving scheme | |
Item type | Theses |
Not for loan | Collection code | Permanent location | Current location | Shelving location | Date acquired | Full call number | Barcode | Date last seen | Koha item type |
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Reference Book | KAU Central Library, Thrissur | KAU Central Library, Thrissur | Theses | 2022-04-21 | 592.57 KAT/BI PG | 175270 | 2022-04-21 | Theses |