Evaluating the effects of plant extracts (lantana camara, tagetes minuta and amaranthus hybridus) on root knot nematodes (m.javanica) in tomato seedlings (lycopersicon esculentum l)

Root Knot Nematodes are one of the major economically important pests of tomato (Lycopersicon esculentum L) in many regions of the world including Zimbabwe, with Meloidogyne javanica being considered the most destructive. Recent prohibition of main soil chemical fumigants for the control of Meloidog...

Full description

Saved in:
Bibliographic Details
Main Author: Chakuringa, Darryn T.
Language:English
Published: Midlands State University 2017
Subjects:
Online Access:http://hdl.handle.net/11408/2534
Tags: Add Tag
No Tags, Be the first to tag this record!
_version_ 1779905283014787072
author Chakuringa, Darryn T.
author_facet Chakuringa, Darryn T.
author_sort Chakuringa, Darryn T.
collection DSpace
description Root Knot Nematodes are one of the major economically important pests of tomato (Lycopersicon esculentum L) in many regions of the world including Zimbabwe, with Meloidogyne javanica being considered the most destructive. Recent prohibition of main soil chemical fumigants for the control of Meloidogyne javanica has prompted for the search of other alternatives to manage root knot nematodes. A greenhouse experiment was carried out to evaluate the effects of aqueous plant extracts on (Lantana camara, Tagetes minuta and Amaranthus hybridus) with a negative and positive control where negative control had only water and positive control had a chemical nematicide (Nemacur®400 Ec (fenamophos as the active ingredient) on Root Knot Nematode (Meloidogyne Javanica) suppression in tomato seedlings. The experiment was arranged in a Completely Randomised Design (CRD) with five treatments and three replications. A Meloidogyne Javanica inoculum was obtained from Tobacco Research Board (TRB) and botanical plant leaves were obtained locally and aqueous plant extracts were prepared. Data collected were days to 50% emergence, seedling height, final nematode population density, gall density and index and root: shoot ratio. There was a significant difference (P<0.001) between the control, Nemacur and all the botanical treatments though A.hybridus showed no significant difference from control on final nematode population density, final RKN population density, number of galls and improved growth parameters of tomato seedlings. The chemical properties and compounds found in the botanicals, for example phenolic and caffeic acids might be responsible for the effects of RKN on tomato seedlings. Results suggest that application of L.camara and T.minuta leaf extracts are good alternatives to manage RKN population though they have an inhibitory suppressive effects on growth parameters
id ir-11408-2534
institution My University
language English
publishDate 2017
publisher Midlands State University
record_format dspace
spelling ir-11408-25342022-06-27T13:49:05Z Evaluating the effects of plant extracts (lantana camara, tagetes minuta and amaranthus hybridus) on root knot nematodes (m.javanica) in tomato seedlings (lycopersicon esculentum l) Chakuringa, Darryn T. Root Knot Nematodes Root Knot Nematodes are one of the major economically important pests of tomato (Lycopersicon esculentum L) in many regions of the world including Zimbabwe, with Meloidogyne javanica being considered the most destructive. Recent prohibition of main soil chemical fumigants for the control of Meloidogyne javanica has prompted for the search of other alternatives to manage root knot nematodes. A greenhouse experiment was carried out to evaluate the effects of aqueous plant extracts on (Lantana camara, Tagetes minuta and Amaranthus hybridus) with a negative and positive control where negative control had only water and positive control had a chemical nematicide (Nemacur®400 Ec (fenamophos as the active ingredient) on Root Knot Nematode (Meloidogyne Javanica) suppression in tomato seedlings. The experiment was arranged in a Completely Randomised Design (CRD) with five treatments and three replications. A Meloidogyne Javanica inoculum was obtained from Tobacco Research Board (TRB) and botanical plant leaves were obtained locally and aqueous plant extracts were prepared. Data collected were days to 50% emergence, seedling height, final nematode population density, gall density and index and root: shoot ratio. There was a significant difference (P<0.001) between the control, Nemacur and all the botanical treatments though A.hybridus showed no significant difference from control on final nematode population density, final RKN population density, number of galls and improved growth parameters of tomato seedlings. The chemical properties and compounds found in the botanicals, for example phenolic and caffeic acids might be responsible for the effects of RKN on tomato seedlings. Results suggest that application of L.camara and T.minuta leaf extracts are good alternatives to manage RKN population though they have an inhibitory suppressive effects on growth parameters 2017-07-05T14:33:35Z 2017-07-05T14:33:35Z 2016-05 http://hdl.handle.net/11408/2534 en open Midlands State University
spellingShingle Root Knot Nematodes
Chakuringa, Darryn T.
Evaluating the effects of plant extracts (lantana camara, tagetes minuta and amaranthus hybridus) on root knot nematodes (m.javanica) in tomato seedlings (lycopersicon esculentum l)
title Evaluating the effects of plant extracts (lantana camara, tagetes minuta and amaranthus hybridus) on root knot nematodes (m.javanica) in tomato seedlings (lycopersicon esculentum l)
title_full Evaluating the effects of plant extracts (lantana camara, tagetes minuta and amaranthus hybridus) on root knot nematodes (m.javanica) in tomato seedlings (lycopersicon esculentum l)
title_fullStr Evaluating the effects of plant extracts (lantana camara, tagetes minuta and amaranthus hybridus) on root knot nematodes (m.javanica) in tomato seedlings (lycopersicon esculentum l)
title_full_unstemmed Evaluating the effects of plant extracts (lantana camara, tagetes minuta and amaranthus hybridus) on root knot nematodes (m.javanica) in tomato seedlings (lycopersicon esculentum l)
title_short Evaluating the effects of plant extracts (lantana camara, tagetes minuta and amaranthus hybridus) on root knot nematodes (m.javanica) in tomato seedlings (lycopersicon esculentum l)
title_sort evaluating the effects of plant extracts (lantana camara, tagetes minuta and amaranthus hybridus) on root knot nematodes (m.javanica) in tomato seedlings (lycopersicon esculentum l)
topic Root Knot Nematodes
url http://hdl.handle.net/11408/2534
work_keys_str_mv AT chakuringadarrynt evaluatingtheeffectsofplantextractslantanacamaratagetesminutaandamaranthushybridusonrootknotnematodesmjavanicaintomatoseedlingslycopersiconesculentuml