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Identification of phytonematodes from vegetable growing areas in malakand division of khyber pakhtunkhwa and their organic biocontrol with pleurotus species
1.
2. IDENTIFICATION OF PHYTONEMATODES FROM
VEGETABLE GROWING AREAS IN MALAKAND DIVISION OF
KHYBER PAKHTUNKHWA AND THEIR ORGANIC
BIOCONTROL WITH PLEUROTUS SPECIES
By
Muhammad Rizwan Liaqat
3. Objectives
To identify plant parasitic nematodes from different
vegetable growing areas of Malakand Agency.
To test in vitro bio-control efficacy of Pleurotus spp.
4. What are nematodes
The Greek word nematode means "threadlike"
Nemat=thread
ode=like
Nematodes are unsegmented roundworms.
Kingdom Animalia - Phylum Nematoda
5. WHY NEMATODES ARE IMPORTANT??
Nematodes are Economically Important to
Agriculture!
"Annual crop loss estimates caused by plant parasitic
nematodes are roughly $80 billion worldwide.
Most abundant animal life form...
"If nothing but nematodes were present there would
be an outline of the Earth and many of its features
9. INTRODUCTION
During 1984 to 1988 the nematodes infestation increased
to such a level that tomato and other solaneceious crops
fail to grow in the whole Malakand and Swat Region (Ali
khan and Haji Muhammad Agricultural Officers Dargai).
Chemical control of nematodes is not possible and not
justifiable. As it were not useful against nematodes
which are living inside the soil and also dangerous to
living beings and environment.
10. Bio control is environment friendly and durable
method to control nematodes.
Different fungi were applied in past as bio control agent
against nematodes (but harmful).
Pleurotus spp which are edible mushroom, have also
used as good source of bio control agent against
nematodes.
11. MATERIALS AND METHODS
Soil samples collection from fields.
Processing of samples.
Quantitative analysis
Qualitative analysis
Temporary Mounts
Killing nematodes
Permanent slide mounts
12. Photomicrograph of eelworm and cyst nematodes.
Collection of Pleurotus Species.
Inoculation of Pleurotus spp. in Malt Extract broth media.
Observation on growth of the Pleurotus spp.
Extraction of natural products.
Application of the organic solvent to the nematodes in Petri
plates.
Data analysis.
MATERIALS AND METHODS
13. RESULTS
Table. 01. Qualitative and Quantitative analysis of plant parasitic
nematodes
S. No. Locality
No. of nematodes per
gram
Genera isolated
1. Jabben Turbela Pull 0.86
Pratylenchus
Xiphenema
longidorous,
Tylenchorhynchus
Helicotylenchus
2. Jabben 0.33
Helicotylenchus
Pratylenchus
Xiphinema
Tylenchorhynchus
Tylenchus
longidorous,
Hoplolaimus
18. Table 03. Frequency of occurrence of plant parasitic nematodes in each
locality in Dargi, Malakand.
S. NO. Genera isolated
Frequency of
Occurrence (%)
1 Helicotylenchus 100%
2 Xiphinema 71%
3 Pratylenchus 57%
4 Ditylenchus 57%
5 Tylenchorhynchus 28%
6 Aphelenchus 28%
7 Hoplolaimus 27%
8 Tylenchus 25%
35. Effect of extracts from Pleurotus citronopileatus on nematodes mortality.
36. Conclusion
1) Our finding confirmed that Dargi region is heavily infested
by plant
parasitic, cyst and root-knot nematodes.
2) They directly and indirectly infect crops (by acting
as a virus
vectors).
37. 3) Extracts from three species of Pleurotus (P. florida, P. ostreatus,
P.citronopileatus.) have been found effective against nematodes
in in vitro.
4) Extracts of P. citronopileatus was found even more effective in
nematode killing at lower level.
38. RECOMMENDATIONS AND FUTURE WORK:
Pleurotus species can be used for the organic control of nematodes.
Extracts from these fungi should be further tested under field conditions.
Molecular identification of the parasitic nematodes in the surveyed area
should be carried out. This will further confirm these results.
Chemical analysis would find the presence of the nematicidal compounds
in these fungi.
39. Theses extracts should be tested against different parasitic nematodes
under pot and field conditions.
Pleurotus species can be used for the organic control of nematodes.
Extracts from these fungi should be further tested under field
conditions.
Control Nematodes Save the Crops
40. ACKNOWLEDGMENTS
First of all I am thank full to Allah Almighty.
I am highly indebted to my Advisor Prof. Dr. Saifullah.
All Faculty members, staff and my student fellows, of
Plant Pathology Department, The Agricultural University
Peshawar, Khyber Pakhtunkhwa.